Publication

Performances of 3.9 MWTH Ammonia Heat Pumps within a District Heating Cogeneration Power Plant: Status After Eleven Years of Operation.

Daniel Favrat, Xavier Pelet
1997
Conference Papers

Abstract

A complex heating and cogeneration plant including two 3.9 MWth ammonia heat pumps and two 3 MWel gas turbines with heat recovery boilers and three strage tanks has been in operation since 1986. This paper is a result of an expreimental evaluation during the eleventh season of heating. Energy balances throughout the season are discussed as well as the performances of one fully equipped heat pump. Results confirm the interest of this type of technology combination even if the performance of the heat pump exhibit a decrease of COP from an average of 5 to about 4.4. This drop is mainly attributed to a drop in compressor performance, fouling in the evaporator, and presence of inert gases.

Official source

https://infoscience.epfl.ch/entities/publication/dbdf1183-7569-4267-96d7-1599d88b824e

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Daniel Favrat, Xavier Pelet
1997
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/dbdf1183-7569-4267-96d7-1599d88b824e

About this result

Related concepts (30)

District heating

District heating (also known as heat networks or teleheating) is a system for distributing heat generated in a centralized location through a system of insulated pipes for residential and commercial heating requirements such as space heating and water heating. The heat is often obtained from a cogeneration plant burning fossil fuels or biomass, but heat-only boiler stations, geothermal heating, heat pumps and central solar heating are also used, as well as heat waste from factories and nuclear power electricity generation.

Compressor

A compressor is a mechanical device that increases the pressure of a gas by reducing its volume. An air compressor is a specific type of gas compressor. Compressors are similar to pumps: both increase the pressure on a fluid and both can transport the fluid through a pipe. The main distinction is that the focus of a compressor is to change the density or volume of the fluid, which is mostly only achievable on gases. Gases are compressible, while liquids are relatively incompressible, so compressors are rarely used for liquids.

Heating, ventilation, and air conditioning

Heating, ventilation, and air conditioning (HVAC) is the use of various technologies to control the temperature, humidity, and purity of the air in an enclosed space. Its goal is to provide thermal comfort and acceptable indoor air quality. HVAC system design is a subdiscipline of mechanical engineering, based on the principles of thermodynamics, fluid mechanics, and heat transfer. "Refrigeration" is sometimes added to the field's abbreviation as HVAC&R or HVACR, or "ventilation" is dropped, as in HACR (as in the designation of HACR-rated circuit breakers).

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Performances of 3.9 MWTH Ammonia Heat Pumps within a District Heating Cogeneration Power Plant: Status After Eleven Years of Operation.

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