Compressor Waste Heat Recovery for Window and Door Manufacturers
We developed a centralised heat recovery solution for the AS Viljandi Aken ja Uks factory, which directs the waste heat from four compressors to heat the ventilation units. The system includes control automation and heat meters for monitoring energy quantities. The installation produces 2 MW of thermal energy per day for the customer, reducing energy waste and improving the working environment.


Project challenge
The waste heat generated during compressor operation is usually wasted when it is only used for oil cooling — as a result, the room becomes too hot. The challenge was to direct this valuable thermal energy purposefully towards heating ventilation equipment while maintaining a high level of safety.
How we built the solution
We developed a compact and clear central unit where safety was the top priority. The solution included control automation for four compressors, as well as dedicated connection points that monitor and direct the waste heat generated by the compressors towards heating ventilation equipment.
- control automation for four compressors
- dedicated connection points for the compressors
- heat meters for continuous monitoring of the energy produced
Automation and remote management
Thanks to innovative heat meters, the client can continuously monitor how much energy the compressors produce. The control automation ensures the safe and reliable operation of the system.
Result
The solution purposefully directs the waste heat generated by the compressors towards heating ventilation equipment, contributing to energy efficiency and creating a more comfortable working environment. According to the client, the installation produces 2 MW of thermal energy per day.
> "This installation produces 2MW of thermal energy per day for us. Good work by the Elister team!" — Raiko Sarap, Technical Manager, Viljandi Aken ja Uks
Galerii
FAQ
Frequently asked questions
How much thermal energy does this solution produce?
For how many compressors is the control automation designed?
How can the produced energy be monitored?
What is the compressors' waste heat used for in this solution?
How is the safe operation of the system ensured?
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