Nyheter https://sveadiesel.se/en/about-us/knowledge-bank/ Nyheter Agera e-handel version 14 http://feed2.w3.org/docs/rss2.html https://sveadiesel.se/en/about-us/knowledge-bank/how-long-should-you-vibrate-concrete-with-an-internal-vibrator/ https://sveadiesel.se/en/about-us/knowledge-bank/how-long-should-you-vibrate-concrete-with-an-internal-vibrator/

How long should you vibrate concrete with an internal vibrator?

When pouring concrete, proper vibration is essential to ensure that the concrete fills the formwork correctly and achieves the required strength. Internal vibrators help remove trapped air from fresh concrete while distributing the material more evenly around reinforcement and into corners of the formwork.

A common question when pouring concrete is how long it should actually be vibrated. If the vibration time is too short, air may remain trapped within the concrete. If the concrete is vibrated for too long, the material may begin to segregate, affecting both strength and surface finish.

How to use an internal vibrator when pouring concrete

When an internal vibrator is inserted into fresh concrete, the material begins to move and consolidate. To achieve even compaction, the vibrator should be inserted at several points throughout the pour, with some overlap between each vibration zone.

The required vibration time varies depending on the consistency of the concrete, the size of the structure and the amount of reinforcement. When pouring slabs or smaller foundations, for example, shorter vibration periods are often sufficient because the concrete can flow more easily throughout the formwork. Walls, columns and structures with dense reinforcement may require more insertion points to ensure that the vibration reaches all areas of the concrete.

Signs that the concrete has been sufficiently vibrated

In many cases, only a few seconds at each insertion point are needed before moving the internal vibrator to the next position. The important thing is to allow the concrete to consolidate without vibrating it more than necessary.
A clear indication that sufficient vibration has been achieved is when air bubbles stop rising to the surface. The concrete will also develop a more uniform appearance and flow more effectively around reinforcement and into corners and edges.
It is also important not to drag the internal vibrator sideways through the concrete. Doing so may move the material unevenly through the formwork rather than consolidating it where it is. For best results, the vibrator should instead be withdrawn vertically and moved systematically to the next insertion point.

What happens if concrete is vibrated for too long?

Excessive vibration can cause the concrete to segregate. Coarser aggregate may sink towards the bottom of the structure while water and finer materials accumulate closer to the surface. This can affect both the strength and surface finish of the finished concrete.
Over-vibration is more likely with concrete of a more fluid consistency or when the internal vibrator is held in the same position for too long. The vibration time should therefore be adapted to the concrete mix and the type of structure rather than using exactly the same approach throughout the entire pour.

Internal vibrators for different types of concrete pours

Different types of concrete pours require different vibration solutions. For smaller projects, compact and easy-to-handle internal vibrators may be more practical, while larger pours often require equipment designed for longer operating periods and larger volumes of concrete.
In some projects, external vibrators are also used as a complement, particularly for precast concrete elements or formwork where vibration applied from the outside can provide better results.
If you would like to learn more about concrete vibration, read our article on how to choose the right internal vibrator for your construction project, where we explain what to consider for different types of concrete work.

Need help choosing the right internal vibrator?

The right equipment makes it easier to achieve consistent results and an efficient workflow when pouring concrete. At Sveadiesel, we can help you find the right solution based on the structure, working environment and requirements of your concrete pour.
If you need help selecting the right equipment for your project, please contact us and we’ll be happy to assist you.
]]> Tue, 02 Jun 2026 15:47:51 +0200 Sveadiesel AB https://sveadiesel.se/en/about-us/knowledge-bank/vad-paverkar-kapaciteten-i-en-orc-modul/ https://sveadiesel.se/en/about-us/knowledge-bank/vad-paverkar-kapaciteten-i-en-orc-modul/

Vad påverkar kapaciteten i en ORC modul?

Kapaciteten i en ORC modul påverkas av flera faktorer, bland annat temperatur, flöde och hur mycket spillvärme som finns tillgänglig i processen. För att få ut så mycket energi som möjligt behöver systemet anpassas efter hur anläggningen arbetar och vilken typ av värme som uppstår i produktionen.

En ORC modul används för att omvandla spillvärme till elektricitet och kan integreras i flera verksamheter.

Temperaturen påverkar hur mycket energi som kan återvinnas

Temperaturen på värmekällan har stor betydelse för hur mycket effekt en ORC modul kan generera. Ju högre temperatur, desto större möjlighet att omvandla värmen till elektricitet.

I många industrier uppstår stora mängder överskottsvärme från exempelvis avgaser, ånga eller varmt processvatten. Inom metallindustrin kan heta avgaser från ugnar användas som energikälla, medan pappersbruk ofta arbetar med processvatten och ånga med jämna temperaturflöden.

Orcan Efficiency PACK kan hantera vätskor över 80 °C och gaser över 150 °C, vilket gör systemen användbara i flera olika typer av processer där värme annars hade gått förlorad.

Kontinuerligt värmeflöde ger mer stabil kapacitet

Förutom temperaturen påverkas kapaciteten även av hur stabilt värmeflödet är över tid. En anläggning som producerar jämn spillvärme dygnet runt ger bättre förutsättningar för stabil energiproduktion än processer där belastningen varierar kraftigt mellan olika driftlägen.

I cement och glasindustri finns ofta kontinuerliga processer där stora mängder värme genereras under lång tid. Det gör att en ORC modul kan arbeta med jämn belastning och producera elektricitet mer effektivt.

I marina applikationer kan belastningen däremot variera beroende på motorernas drift och fartygens användning. Där behöver systemet kunna anpassa sig efter varierande temperaturer och energiflöden.

Hur en OCR modul integreras påverkar också resultatet

Kapaciteten handlar inte enbart om själva ORC modulen utan även om hur systemet kopplas in i anläggningen. Om värmeväxlare, rördragning eller energiflöden inte är rätt dimensionerade kan delar av energin gå förlorad innan den når systemet.

I befintliga industrier behöver installationen dessutom anpassas efter tillgängligt utrymme och hur produktionen ser ut. Målet är ofta att integrera systemet utan att påverka den löpande driften mer än nödvändigt.

I vissa anläggningar kan systemet även kombineras med andra energilösningar. Läs mer om samspelet mellan ORC moduler och små ångturbiner.

Skalbara lösningar för olika behov

Modulbaserade ORC system gör det möjligt att anpassa kapaciteten efter verksamhetens energiflöden och effektbehov. Det gör att lösningen kan användas både i mindre processer och större industriella anläggningar. 

Planering och uppföljning är viktigt för långsiktig drift

För att få ut rätt kapacitet över tid behöver systemet följas upp och anpassas efter hur processen förändras. Driftmönster, temperaturvariationer och förändringar i produktionen kan påverka hur effektivt systemet arbetar. 

Genom regelbunden övervakning går det att upptäcka avvikelser tidigt och säkerställa att anläggningen fortsätter leverera stabil energiproduktion över tid. 

Vill du veta vilken ORC modul som passar din verksamhet?

Hos Sveadiesel hjälper vi företag att analysera spillvärme, energiflöden och driftförhållanden för att hitta rätt lösning utifrån verksamhetens behov.

Vill du veta mer om hur en ORC modul kan integreras i sin anläggning eller har frågor kring dimensionering och kapacitet är du välkommen att kontakta oss.
]]> Tue, 02 Jun 2026 16:03:17 +0200 Sveadiesel AB https://sveadiesel.se/en/about-us/knowledge-bank/vad-ar-en-angturbin-grunderna-bakom-effektiv-energiproduktion/ https://sveadiesel.se/en/about-us/knowledge-bank/vad-ar-en-angturbin-grunderna-bakom-effektiv-energiproduktion/

Vad är en ångturbin? Grunderna bakom effektiv energiproduktion

Ångturbiner är hjärtat i många kraftverk och industriprocesser. De omvandlar värmeenergi från ånga till mekanisk energi som kan driva generatorer, pumpar eller annan utrustning. Trots att tekniken har över hundra år på nacken har moderna turbiner utvecklats med hög precision, slitstarka material och effektiv design.

Så fungerar en ångturbin

Principen är enkel, ånga leds in i turbinen och träffar turbinblad som får rotorn att snurra. Denna rotation kan användas direkt för mekanisk drift eller för att generera elektricitet via en turbogenerator. Bladens form, vinkel och material påverkar hur mycket energi som omvandlas. 

Moderna turbiner använder ofta legeringar som tål högt tryck och temperatur, vilket ger både hög prestanda och lång livslängd. Tänk på det som en vindsnurra där det är ånga istället för vind som driver bladen.

Vanliga typer av ångturbiner

  • Enstegsturbiner - Har en enda turbinsektion och används ofta för mindre industriell utrustning. Lätt att underhålla och stabil i drift.
  • Flerhöljesångturbiner - Flera steg gör att mer av ångans energi tas tillvara. Hög verkningsgrad och används i kraftverk och större industriella anläggningar.
  • Små ångturbiner - Kompakta turbiner med snabb start och stopp, perfekt för mindre processer eller reservkraft.

Hur påverkar prestandan?

Flera faktorer påverkar hur effektivt en ångturbin fungerar.

  • Ångkvalitet - Fukt och partiklar kan skapa avlagringar på bladen och minska verkningsgraden.
  • Smörjsystem - Korrekt oljning skyddar lager och rörliga delar mot slitage och överhettning.
  • Driftförhållanden - Frekvent start och stopp, varierande belastning eller temperatur kan påverka livslängden.
Regelbundna inspektioner, förebyggande underhåll och rätt serviceavtal hjälper till att hålla turbinen effektiv och driftsäker.

Fördelar med ångturbiner

  • Effektiv omvandling av energi.
  • Lång livslängd vid korrekt skötsel.
  • Flexibel användning av olika energikällor, från olja och gas till biomassa.

Maximera effektiviteten med ångturbiner från Sveadiesel

Vi på Sveadiesel erbjuder turbiner med effektspann från 75 kW till 12 MW samt installation, service och reservdelar. Med över 70 års erfarenhet av avancerade tekniska system för industri och marin verksamhet hjälper vi er att välja rätt lösning och hålla turbinerna i toppskick. 

Kontakta oss redan idag för rådgivning och skräddarsydda underhållsplaner. Vi ser fram emot att hjälpa er vidare.
]]> Mon, 18 May 2026 11:02:07 +0200 Sveadiesel AB https://sveadiesel.se/en/about-us/knowledge-bank/sa-fungerar-aeratorer-i-silotrailers-och-tanktrailers-/ https://sveadiesel.se/en/about-us/knowledge-bank/sa-fungerar-aeratorer-i-silotrailers-och-tanktrailers-/

Så fungerar aeratorer i silotrailers och tanktrailers

Vid transport av bulkmaterial i silotrailers och tanktrailers utsätts materialet för vibrationer, tryck och ibland fukt. Det gör att materialet ofta packas under körning, vilket påverkar hur det beter sig vid lossning. I vissa fall rinner det ut jämnt, men i andra fall kan flödet stanna helt eller komma i ojämna intervaller.

En aerator används för att få igång flödet vid tömning. Genom att tillföra luft i tankens botten minskar friktionen i materialet, vilket gör att det släpper och börjar röra sig. Det gör lossningen mer kontrollerad och minskar risken för att material blir kvar i tanken.

Hur fungerar en aerator i praktiken?

En aerator tillför tryckluft via membran eller plattor som sitter monterade i tankens botten. När luften släpps in förändras hur partiklarna ligger mot varandra, vilket gör att materialet lossnar från ytorna och börjar röra sig.

Effekten blir tydligast vid finkorniga material som annars lätt packas eller stannar upp. Genom att påverka materialet direkt i botten av tanken kan man få igång flödet där det annars ofta stannar först.

När aeratorer gör störst nytta i transporten

Aeratorer används främst i transporter där materialets egenskaper gör lossningen svår att kontrollera. Det gäller till exempel torra pulver, spannmål eller andra bulkprodukter som förändrar beteende under transport och lätt packas under körning.

De är särskilt relevanta när lossningen är en återkommande del av arbetet. I verksamheter där flera leveranser sker varje dag blir det viktigt att processen fungerar konsekvent, oavsett hur materialet har påverkats under körningen.

I dessa situationer kan rätt dimensionerade aeratorer bidra till att göra så att materialet rör sig mer jämnt vid tömning.

Vanliga problem vid lossning av bulkmaterial

Ett vanligt problem vid lossning är att materialet inte når utloppet trots att tanken inte är tom. Det beror ofta på att materialet bildar valv eller så kallad bryggbildning, där materialet hänger kvar istället för att falla ner mot utloppet.

Ett annat tecken är att flödet startar och stannar i omgångar. Det gör lossningen svår att styra och kan påverka både tid och precision i leveransen.

Genom att tillföra luft med en aerator påverkas dessa strukturer så att materialet bryts upp och kan röra sig nedåt igen.

Vad påverkar effekten av en aerator?

Effekten av en aerator beror i hög grad på hur systemet är anpassat till applikationen. Placeringen i tanken avgör var lufttillförseln får genomslag, och fel placering kan göra att delar av materialet inte påverkas alls.

Materialets egenskaper spelar också en avgörande roll. Samma lösning fungerar inte alltid lika bra för olika typer av bulkprodukter, vilket gör att dimensionering och antal enheter kan behöva anpassas.

I praktiken handlar det därför om att se till helheten, där både tankens utformning och materialets beteende tas med i bedömningen.

Välj rätt aerator för din transport

Valet av aerator påverkas av flera faktorer, som materialtyp, hur ofta lossning sker och hur tanken är uppbyggd. Vissa applikationer kräver kontinuerlig lufttillförsel medan andra fungerar bättre med kortare pulser.

Behöver du rådgivning? Kontakta oss på Sveadiesel, så hjälper vi dig att analysera din applikation och hitta en lösning som fungerar i praktiken. 
]]> Mon, 18 May 2026 11:14:04 +0200 Sveadiesel AB https://sveadiesel.se/en/about-us/knowledge-bank/how-to-choose-the-right-internal-vibrator-for-your-construction-project/ https://sveadiesel.se/en/about-us/knowledge-bank/how-to-choose-the-right-internal-vibrator-for-your-construction-project/

How to choose the right internal vibrator for your construction project

When pouring concrete, it is important to ensure that the concrete is properly consolidated within the formwork. If air remains trapped in the concrete, it can affect both strength and surface finish. This is why vibration is an important part of the concrete pouring process. With the right internal vibrator, the concrete achieves a more uniform structure and fills the formwork in a controlled manner.
An internal vibrator is inserted into the fresh concrete, causing the material to move and consolidate. This allows the concrete to flow more effectively around reinforcement and into corners of the formwork, helping to create a more uniform structure.

When is an internal vibrator used for concrete?

An internal vibrator is used for many types of concrete work, including slabs, walls, columns and foundations where the concrete needs to be consolidated from within. The method is particularly common in reinforced structures or deeper formwork. By working systematically through the concrete, the entire pour can be properly vibrated.
During pouring, the internal vibrator is inserted into the concrete at several points and then moved systematically through the formwork. This ensures that the vibration reaches the entire pour. On construction sites, internal vibrators are used for both smaller projects and larger concrete pours, where several operators may work simultaneously to maintain a consistent workflow.

What to consider when choosing an internal vibrator

The most suitable internal vibrator depends on factors such as the size of the structure and how easily the operator can access the concrete within the formwork. The consistency of the concrete also plays an important role, as different concrete mixes respond differently to vibration. More fluid concrete generally requires less vibration, while stiffer concrete may require more vibration to achieve proper consolidation.
The length and diameter of the vibrator head also affect how the vibration is distributed through the concrete. A longer vibrator allows the operator to reach deeper into the formwork, for example when working with taller structures, while a narrower vibrator can be easier to use around dense reinforcement or in confined spaces.
For certain types of concrete work, such as precast elements or series production, vibration is often applied externally to the formwork. In these applications, an external vibrator may be a suitable alternative, depending on the structure and how the pouring process is organised.

Common mistakes when using an internal vibrator

When pouring concrete, it is important to use the vibrator correctly. One common mistake is moving the internal vibrator through the concrete too quickly. This may not allow enough time for the concrete to consolidate properly, leaving air trapped within the structure.
Another common mistake is vibrating the concrete inconsistently. This can result in some areas being less effectively consolidated than others. Signs of insufficient vibration can include trapped air bubbles, voids in the surface or concrete failing to properly fill the spaces around reinforcement.
Using the correct technique helps achieve a more consistent result while reducing the risk of defects in the finished structure.

Need help choosing the right internal vibrator?

The right equipment can make concrete work both easier and more efficient. Choosing the appropriate internal vibrator helps simplify the pouring process and achieve consistent results from one pour to the next.
At Sveadiesel, we can help you find a solution that works for your specific project. Contact us and we’ll help you determine which concrete vibrator is best suited to your application.
]]> Wed, 13 May 2026 13:02:30 +0200 Sveadiesel AB https://sveadiesel.se/en/about-us/knowledge-bank/when-should-you-use-a-truck-bed-vibrator/ https://sveadiesel.se/en/about-us/knowledge-bank/when-should-you-use-a-truck-bed-vibrator/

When should you use a truck bed vibrator? A complete guide for construction and transport

When transporting materials in a tipper body, the load can become tightly compacted against the surfaces of the body. This is particularly common during longer journeys or when the material contains moisture. When the body is tipped, some of the load may remain stuck, resulting in longer unloading times and sometimes requiring manual intervention.
A truck bed vibrator helps release material from the surfaces of the body during tipping. This speeds up unloading and reduces the need for manual intervention. For many contractors and transport companies, it is a simple way to achieve a more predictable and efficient workflow in day-to-day operations.

When is a truck bed vibrator the right solution?

A truck bed vibrator is particularly useful when materials tend to stick to the body. This can include gravel, sand, soil and grain, as well as other types of bulk material.
Truck bed vibrators are often used when fast and reliable unloading is important, for example during frequent deliveries or time-sensitive operations. In applications involving several loads per day, avoiding unnecessary downtime becomes particularly important. A truck bed vibrator can therefore help keep operations running smoothly between loads.

Different types of truck bed vibrators and their applications

There are several types of truck bed vibrators, and the right choice depends on the vehicle configuration and the type of material being transported.

Electric truck bed vibrators

Electric truck bed vibrators are a common choice for many tipper bodies. They are powered by an electric motor and are relatively easy to install. For materials such as gravel, sand and soil, they are often sufficient to help release the load during tipping. They are primarily used for normal operating conditions where a reliable solution is needed for frequent use.

Hydraulic truck bed vibrators

Hydraulic truck bed vibrators are used when greater force is required or when the equipment needs to withstand more demanding operating conditions. They are powered hydraulically and contain no electrical components, making them suitable for heavy-duty applications.
They are particularly well suited to heavier materials or loads that become tightly compacted during transport. Where a hydraulic system is already available, this type of vibrator can make use of the vehicle's existing system while providing greater force than an electric truck bed vibrator.

Pneumatic truck bed vibrators

Pneumatic truck bed vibrators are powered by compressed air and are suitable for lighter or finer materials, such as grain, pellets and dry bulk products. They operate at high frequency and are often used in applications where compressed air is already available.

What affects the performance of a truck bed vibrator?

The performance of a truck bed vibrator depends largely on where it is installed. If it is mounted too far from the area where the material tends to stick, its effectiveness may be limited even if the vibrator itself provides sufficient force.
The characteristics of the material also play an important role. Moist material or loads that become tightly compacted during transport often require greater force or more carefully considered vibrator placement to ensure effective unloading.
Larger or longer tipper bodies may sometimes require more than one vibrator, as vibrations may not always spread effectively across the entire surface. Some models are designed for bodies up to a certain length, meaning that larger configurations may require multiple units to achieve consistent vibration. Solutions such as Sveavibra III, for example, are designed for tipper bodies up to approximately 9 metres in length.

Which truck bed vibrator is right for your application?

The most suitable truck bed vibrator depends on the material you transport, how frequently the body is emptied and the configuration of the vehicle. Heavier materials may require a more powerful solution, while lighter materials can often be handled effectively with simpler models.
Want to make unloading easier and find a solution that works reliably in practice? Contact us and we’ll help you find the right truck bed vibrator for your vehicle and the material you transport.
]]> Fri, 24 Apr 2026 13:50:07 +0200 Sveadiesel AB https://sveadiesel.se/en/about-us/knowledge-bank/how-does-a-steam-turbine-work-the-technology-behind-the-power-/ https://sveadiesel.se/en/about-us/knowledge-bank/how-does-a-steam-turbine-work-the-technology-behind-the-power-/

How Does a Steam Turbine Work? The Technology Behind the Power

Steam turbines have been a cornerstone of industry and energy production for over a century. They convert the heat and pressure of steam into mechanical energy, which can then drive generators, pumps, or other equipment.

Although the technology is more than a hundred years old, modern turbines have been refined with high precision, new materials, and efficient designs. So how do they actually work?

The Basic Principle – From Steam Energy to Rotation

A steam turbine works by using the pressure and kinetic energy of steam to drive a rotor. Steam enters the turbine through a nozzle that increases the velocity of the steam flow. When the steam hits the turbine blades, its energy is transferred to the rotor, causing it to spin. This rotation can then be used directly for mechanical work, such as in pumps and compressors, or to generate electricity via a turbo-generator.

The shape and material of the blades are crucial for efficiency. Angle, curvature, and surface finish affect how much energy is converted into rotation. Modern turbines often use durable alloys that can withstand high pressure and temperature, allowing both high performance and long service life. The design is also important to ensure the turbine can start and stop quickly without risking damage to the rotor or blades.

Different Types of Steam Turbines and Their Uses

Steam turbines come in various sizes and designs to meet different power requirements and industrial applications. Three common types are widely used worldwide.

Small Steam Turbines

Compact turbines with quick start and stop capabilities are often used for smaller industrial processes, laboratories, or as backup power. Their smaller size makes installation and operation simple, while still providing reliable energy conversion for lower power needs.

Single-Stage Turbines

Single-stage turbines consist of a single turbine section that converts steam energy into rotation. They have a simple design and are therefore easy to maintain. This type of turbine is often used to directly drive pumps, compressors, or small turbo-generators that produce electricity. Single-stage turbines are best suited when power needs are moderate and stable operation is desired without complex installation.

Multi-Casing Steam Turbines

Multi-casing steam turbines have several turbine sections (stages) in the same machine, allowing them to harness more of the steam’s energy. This results in higher efficiency and greater output. This type is mainly used in power plants or large industrial facilities where significant electricity or mechanical power is required. Multi-casing turbines can drive large generators or heavy process equipment and are designed for long-term, efficient operation.

Factors Affecting Performance and Operation

The performance of a steam turbine is influenced by several factors. Steam quality is critical; moisture or particles can cause deposits and erosion on the blades, reducing efficiency. The lubrication system must function correctly to prevent overheating and wear on bearings and the shaft. Start/stop frequency, load variations, and temperature fluctuations can also affect lifespan and operational reliability.

Regular monitoring, blade inspections, and lubrication checks can prevent downtime and damage. Modern turbines can also be equipped with sensors that continuously measure vibration, temperature, and oil quality, providing early warnings of potential issues.

Discover the Right Steam Turbines for Your Needs – Contact Us

Would you like to learn more about how our steam turbines can be integrated into your production or electricity generation? With extensive experience and close collaboration with reputable suppliers like Howden , we offer technical advice, expert support, and complete solutions. Contact us, and we will gladly help you choose the right turbine solution for your business.
]]> Thu, 04 Dec 2025 14:51:22 +0100 Sveadiesel AB https://sveadiesel.se/en/about-us/knowledge-bank/what-is-orc-technology-/ https://sveadiesel.se/en/about-us/knowledge-bank/what-is-orc-technology-/

What is ORC technology? A guide to energy efficiency with ORC systems

ORC stands for Organic Rankine Cycle, a technology used to generate electricity from low-temperature heat. Unlike conventional steam turbines, ORC systems can operate at lower temperatures, making them suitable for applications where conventional technologies are less effective. This allows energy that would otherwise be lost as waste heat to be recovered and put to productive use.

How an ORC system works

An ORC system is based on the same principle as the conventional Rankine cycle but uses an organic working fluid instead of water. This enables the system to utilise heat from a wide range of sources and convert it efficiently into electricity. The process consists of several stages, each with a specific function.

The heat source that drives the process

Waste heat from industrial processes, exhaust gases or renewable sources such as geothermal energy provides the thermal input needed to drive the system.

Evaporation of the working fluid

The organic working fluid evaporates at relatively low temperatures, allowing even moderate-temperature waste heat to be used to power the system.

The turbine converts heat into mechanical energy

Once the organic fluid has vaporised, it is directed through a turbine. As the pressurised vapour expands, it drives the turbine and converts thermal energy into mechanical energy.

The generator produces electricity

The turbine is connected to a generator, which converts the mechanical rotation into electricity. The electricity can be used directly within the facility or supplied to the power grid.

Cooling and recirculation of the working fluid

After passing through the turbine, the vapour is cooled and condensed back into liquid form before being recirculated through the system. ORC therefore operates as a closed-loop cycle.

From industry to energy – ORC in practice

Thanks to its ability to recover low-temperature heat, ORC technology is used across a wide range of industries. It can be adapted to both smaller and larger installations, making it a flexible solution for different applications.

Industrial processes and manufacturing

Process industries such as chemical manufacturing, metal production and pulp and paper can recover significant amounts of waste heat that would otherwise be released into the environment.

Marine and defence applications

Space is often limited on ships, submarines and other marine installations. ORC modules can generate electricity and mechanical power without the need for large conventional boiler systems.

Energy sector and renewable energy

Geothermal power plants and smaller-scale energy facilities can use ORC technology to convert naturally occurring heat sources into electricity efficiently.

Why companies choose ORC technology

Investing in ORC technology can provide benefits beyond technical innovation. The combination of potential energy savings and environmental benefits makes it an attractive option for companies looking to improve the long-term efficiency of their energy use.

Lower energy costs through waste heat recovery

By recovering heat that is already generated within an operation, businesses can reduce their need for externally purchased energy.

Reduced environmental impact and more sustainable operation

Recovering waste heat instead of allowing it to dissipate unused can reduce overall energy consumption and associated CO₂ emissions.

Easy integration into existing systems

ORC modules can be supplied as containerised solutions and integrated into existing installations without extensive modifications, simplifying implementation.

Long service life and low maintenance requirements

With automated operation and a design focused on reliability, ORC systems can provide long service life with relatively low maintenance requirements.

The future of ORC technology

ORC technology continues to evolve. New working fluids with improved environmental properties are being developed, while ORC systems are becoming more compact and efficient. These developments can make ORC easier to integrate, more economical to operate and increasingly attractive to both industrial companies and energy producers. As demand for renewable and resource-efficient energy solutions grows, ORC technology is likely to play an increasingly important role in the future energy mix.

Ready to take the next step with ORC? Contact Sveadiesel

ORC technology makes it possible to generate electricity from low-temperature heat that would otherwise go to waste. It offers an efficient way to make better use of available energy and can be adapted to a wide range of industries and applications.

Would you like to learn more about how ORC can be integrated into your operations? Contact us and we’ll help you find the right solution for improved energy efficiency and more sustainable operation.
]]> Mon, 01 Dec 2025 14:03:35 +0100 Sveadiesel AB https://sveadiesel.se/en/about-us/knowledge-bank/4e998025-09fb-48a0-a12b-d22efcbd1f40/ https://sveadiesel.se/en/about-us/knowledge-bank/4e998025-09fb-48a0-a12b-d22efcbd1f40/

ORC Modules and Small Steam Turbines – a Powerful Combination

Combining ORC modules with small steam turbines is an effective way to maximize energy recovery. This combination is well-suited for both industrial and marine environments. By allowing the systems to complement each other, high-temperature steam and low-temperature waste heat can be utilized. This increases efficiency and reduces energy losses.

How the Combination of ORC and Small Steam Turbines Works

When small steam turbines and ORC modules are connected, a system is created that can harness the energy of steam in multiple stages. First, the steam turbine captures the portion of steam with the highest pressure and temperature, delivering mechanical energy or electricity efficiently.

After the steam passes through the turbine, residual heat remains that would otherwise be lost. This is where the ORC module comes into play. It is designed to operate at lower temperatures and converts the remaining energy into electricity.

The result is a system where the steam turbine provides the first, high-performance energy extraction, and the ORC module complements it by “cleaning up” and recovering residual energy that would otherwise go unused. This achieves more complete energy recovery, higher overall efficiency, and a system that utilizes the full heat spectrum – from high-pressure steam down to low-temperature waste heat.

Advantages of the Integration

By allowing ORC modules and small steam turbines to work together, energy can be used more efficiently. The combination provides both economic and environmental benefits while ensuring long-term operational sustainability.

• Economic Benefits
By recovering waste heat and using steam more efficiently, companies can significantly reduce energy costs. The system can also provide a quick return on investment through lower operating costs and reduced reliance on external energy sources.

• Environmental Benefits
The combination contributes to green energy and reduces carbon dioxide emissions by optimizing energy use. Waste heat that would otherwise be released into the atmosphere becomes valuable energy instead.

• Operational Flexibility
Small steam turbines can be quickly started and stopped with varying steam flows, while the ORC module continuously converts low-temperature heat into electricity. This allows the system to operate efficiently even under fluctuating conditions.

• Sustainability and Longevity
The combination is robust and can be designed to minimize maintenance needs. With monitoring and sensors, operational downtime can be avoided.

Planning and Operation

To get the most out of the combination, careful planning of the integration is essential. The balance between small steam turbines and ORC modules should be dimensioned according to power requirements and steam flow. Regular monitoring, sensors, and maintenance are central components to ensure long-term operational reliability and energy efficiency. By analyzing operational data, the system can be optimized over time for higher efficiency and lower operating costs.

Harness Your Energy – Contact Us

Do you want to optimize your energy production with ORC modules and small steam turbines? Through close collaboration with well-known manufacturers like Howden and Orcan, we are confident in delivering a solution tailored to your business. Contact us, and we’ll be happy to provide more information.

Contact us

]]> Thu, 04 Dec 2025 13:43:05 +0100 Sveadiesel AB https://sveadiesel.se/en/about-us/knowledge-bank/common-faults-in-steam-turbines-and-how-to-prevent-them/ https://sveadiesel.se/en/about-us/knowledge-bank/common-faults-in-steam-turbines-and-how-to-prevent-them/

Common faults in steam turbines and how to prevent them

Steam turbines are robust machines designed to operate reliably for decades, provided they are used and maintained correctly. However, no machine is immune to wear, technical faults, or operational disturbances. In this article, we review three common types of faults that can affect turbines, why they occur, and how they can be prevented with the right measures.

Imbalance and vibrations – an early warning sign

One of the most common problems with rotating equipment, including turbines, is rotor imbalance. This can occur when turbine blades accumulate deposits from impure steam, for example if the feedwater is not sufficiently clean or if moisture and particles enter the steam flow. Such deposits change the mass and geometry of the blades, which disrupts balance. Another cause is uneven wear that can develop over time, often as a result of particle-induced erosion. Varying operating conditions that cause certain components to be subjected to higher loads than others are an additional factor.

Imbalance leads to increased vibrations, which can primarily damage bearings, surfaces, and seals, but can also be transmitted to driven equipment such as pumps or generators. To avoid this, regular vibration measurements and inspections are recommended. By monitoring changes in vibration frequency and intensity, problems can be detected before they cause unplanned shutdowns. It is also important to monitor the lubrication system, as improper lubrication can further aggravate vibrations.

Reduced efficiency due to deposits and erosion

Over time, steam containing particles or moisture can cause deposits and erosion on turbine blade surfaces. This affects efficiency and leads to energy losses. Erosion is particularly common in steam turbines operating under varying conditions or where steam quality is inconsistent.

To prevent this, steam quality should be checked regularly and water treatment systems should be used. It is also important to visually inspect the blades during planned shutdowns. If necessary, blades can be cleaned or replaced as part of preventive maintenance. Feel free to read more about our turbine maintenance services.

Insufficient monitoring of the oil system

The oil system in a steam turbine is critical for both cooling and lubrication. Problems such as contaminated oil, low oil pressure, or overheated oil can be caused by issues such as poor filter maintenance, leaks, clogged coolers, or incorrectly set pressure controls.

If the oil is dirty—for example contaminated with metal particles, water, or a degraded lubricating film—the protection against friction is reduced. This in turn increases wear on bearings and other moving parts.

Low oil pressure means that oil does not reach all surfaces requiring lubrication and, in the worst case, can lead to dry running. Overheated oil becomes thinner and can chemically degrade, impairing both lubrication and cooling. If these issues are not addressed in time, they can cause overheating, excessive wear, and in some cases damage that requires major repairs or forces a complete turbine shutdown.

By taking regular oil samples and following up on the results, it is possible to detect water, particles, or changes in the oil’s chemical composition. This allows corrective action to be taken before operational disturbances occur. In a structured turbine maintenance program, oil analysis is often a key component.

Ensure reliable operation and reduce the risk of shutdowns – contact us

Do you want to avoid unplanned downtime and extend the service life of your turbines? With the right turbine maintenance strategy, many of the most common faults can be prevented, resulting in safer and more energy-efficient operation.

Contact us at Sveadiesel and we will help you develop a maintenance plan tailored specifically to your needs.
]]> Mon, 01 Dec 2025 14:11:25 +0100 Sveadiesel AB