Heat recovery in sustainable cities
There is enough waste energy worldwide to heat all buildings, yet waste heat recovery examples are scarce. The best energy is the one not used, and the next best is the one reused. We can repurpose energy from industries and urban sources like data centers, metro stations, supermarkets, and underground mines. This recovered heat can be used locally, such as in space and tap water heating. Additionally, it can be sold for district heating purposes.
Cooled acid turns to district heating
Since 1974 Kemira has, efficient and reliable, been selling energy to the city of Helsingborg.
The best energy is the one not used, and the next best energy is the one reused."
Following a total reconstruction of the cooling system at the Kemira sulphuric acid plant, the temperature of the cooling water has been raised to a level at which it can be used for district heating.
Trend in Industry
To keep the global warming target of 1.5 °C alive, we need to triple the installed capacity of renewable energy and double the rate of global energy efficiency improvements by 2030. Use of the excess heat available worldwide will be essential and a great opportunity to achieve this. Only in EU, the available excess energy is expected to surplus 2000 TWh in 2050 which could cover almost the full heat demand for space and tap water heating (Mathiesen 2023).
The excess heat is generated both from industrial processes and urban sources such as wastewater treatment plants, data centres, hospitals, and the metro. New solutions for heat reuse are being deployed every day. However, location, infrastructure, and demand patterns often cause heat to be lost.
- 22 countries in EU could cover more than 50 % of their current energy demand with excess heat.
- Low temperature excess heat from wastewater treatment plants, 442 TWh/year, and data centres, 221 TWh/year, can be lifted with industrial heat pumps to temperature levels suitable to supply the district heating grid.
- By improving the energy efficiency and preparing buildings for low temperature heat distribution we can reduce heat losses in the district heating system and allow utilization of lower grade excess heat sources. In doing so the Coefficient of Performance (COP) of industrial heat pumps are improved even further.
- 30 % of the electricity in hydrogen production is converted to heat. When planning hydrogen plants, the location should be carefully selected to allow heat recovery while providing cooling to the electrolyser.
- Expansion of water-carried systems such as district energy and heat networks will be a crucial enabler to distribute excess heat.
- Fit for 55 package: cities in EU larger than 45 000 citizens will be required to produce a heating and cooling plan with mapping of the available energy to facilitate sector coupling and deployment of essential energy infrastructure.
- When cooling residential and service buildings with individual chillers, heat is produced as a by-product. This heat should be used for tap water heating or used to provide efficient cooling with an absorption chiller.
Why you should recover excess heat with Alfa Laval
- 99.9% of data centres’ electricity becomes excess heat. Our technology enables harnessing and reusing it for net-zero energy consumption.
- Alfa Laval has a broad range of contact points to connect energy companies to heat networks and district energy networks.
- With millions of heat exchangers in operation worldwide and an extensive R&D program for heat exchangers, we offer the most reliable solution.
- We have reference units in both industrial and urban excess heat applications to provide heat for district heating.
- All our plate heat exchangers have AHRI certification, ensuring superior thermal performance. Don’t take just our word for it.
Gasketed plate-and-frame heat exchangers
- Flexible solutions that can be adapted to the duty ensuring highest thermal efficiency
- Compact designs save space and are easy to service and maintain
- Solutions to reduce fouling, stress and corrosion for maximum uptime
Semi-welded plate heat exchangers
- Highly efficient, reliable technology for applications that can cause pressure or temperature fatigue
- Guaranteed long sealing lifetime thanks to unique Alfa Laval RefTight™ sealing system
- A dependable solution for preventing cross-contamination between media
Brazed plate heat exchangers
- Lightweight copper-brazed construction with compact footprint
- Greater thermal efficiency than comparable shell-and-tubes
- Flexible options to fit a variety of applications with all different types of media/fluids
- Ideal for natural and low-GWP refrigerants
Fusion bonded AlfaNova heat exchangers
- True 100% stainless steel construction
- Strong corrosion resistance with aggressive media
- Prevents metal contamination in drinking water and other hygienic applications
- High thermal efficiency and compact footprint
컨설턴트 ? 시스템 인티그레이터 ?
당신은 컨설턴트입니까? 주목해주세요! 열 교환 분야에서 축적된 수십 년간의 경험을 바탕으로 알파라발은 오늘날의 냉난방 문제에 대한 지식이 풍부한 리소스를 제공합니다. 귀하의 응용 분야에 적합한 기술을 보다 쉽게 찾을 수 있게 해주는 유용한 도구와 함께 에너지 효율성부터 천연 냉매까지 이 모든 것에 대한 복합적인 질문에 대한 답을 찾아보세요.
AHRI 성능 인증을 받은 열교환기
AHRI(공조, 난방 및 냉동 연구소)의 인증은 열 성능에 대한 유일한 글로벌 제3자 검증으로서, 귀하의 판형 열교환기가 제조업체가 게시한 등급에 따라 작동할 것이라는 독자적인 보증을 제공합니다. 알파라발은 AHRI 의 인증을 받은 가스켓 판형 열교환기, 브레이징 판형 열교환기, 융합접합 판형 열교환기를 제공합니다.
Hunting for excess heat
Alfa Laval heat exchangers have been used to recover heat for almost a century. Our energy-efficient solutions support heat reuse in diverse applications, from water and oil-cooled data centres to industrial processes like sulphuric acid plants. Join us in our search for heat-saving opportunities and discover how much you can reduce your energy bill with our solutions.
The Energy Efficiency Movement
The Energy Efficiency Movement, initiated by ABB, aims to create awareness and foster actionable change as a community. At Alfa Laval, we recognize the importance of working together to scale up energy-efficient solutions. That's why we were the first company to join the movement at COP26. With our extensive network, we can connect key industry players and help pave the way to a net-zero future.
효율성 유지
열교환기가 제대로 작동하지 않으면 안전, 제품 품질 및 에너지 비용에 영향을 미칠 수 있습니다. 고장이 나면 생산량에 큰 손실이 생기고 가동 중지 중에도 계속 비용이 나가게 됩니다. 정기적이고 사전 예방적인 유지 관리를 통해 개스킷 판형 열교환기의 성능은 유지되고 문제 없이 예측 가능하게 작동합니다.
우리는 지금 문제가 발생한 상태거나 향후 문제를 예방하고 싶거나 온라인 해결사를 통해 문제를 직접 해결하고 싶은 경우 도움을 줄 수 있는 전문 지식을 보유하고 있습니다.
에너지효율성을 위한 디지털
스마트 시티와 디지털 지능는 도시가 지속 가능한 개발 목표의 70%를 달성하는 데 도움을 줄 수 있습니다. 디지털 서비스는 이미 도시의 냉난방 시스템에 상당한 영향을 미쳐 지속가능성을 더 향상시켰습니다.
원격 모니터링을 활성화하고 전용 분석을 수행하면 더 정확하고 효율적인 운영, 더 많은 정보에 입각한 의사 결정 및 목표 개입이 가능합니다. 더욱 정교하고 효율적인 냉난방 시스템의 개발은 이러한 디지털 전환을 통해서만 가능하며, 이는 온실 가스 배출을 줄이면서 도시 지역에 안정적이고 저렴한 냉난방 서비스를 제공할 수 있습니다.
HVAC and the Sustainable cities
Consuming more than two-thirds of the world’s energy, our cities play a crucial role in tackling the climate crisis. A considerable part of cities’ energy consumption is for heating and cooling, which means improving energy efficiency is paramount. Alfa Laval has almost a century of experience in heat transfer and recovery and aims to become carbon neutral by 2030. Let us be your partner in the transformation to a sustainable tomorrow.
