Completed Annexes

HPT TCP has been active since 1978, with a lot of collaborative research, development, demonstration and deployment projects. We call these projects "Annexes" and they are conducted on a combination of cost sharing and task-sharing basis by the participating countries. Here you can read about the finalized projects, from 1989 to this present date.


Annex

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Compact Heat Exchangers in Heat Pumping Equipment

This Annex was directed at widening the use of compact heat exchangers (CHEs) in heat pumping systems. The Annex wanted to show that these can improve efficiencies, min…

Annex

32

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Economical Heating and Cooling Systems for Low Energy Houses

This Annex investigated different configurations of integrated multifunctional heat pump systems for space heating, DHW production, space cooling, ventilation and de-/hu…

Annex

31

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Advanced Modeling and Tools for Analysis of Energy Use in Supermarkets

Supermarkets are the most energy intensive buildings in the commercial sector. It has been estimated that 3-5 % of the total use of electricity stems from supermarkets in…

Annex

30

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Retrofit Heat Pumps for Buildings

The market potential of heat pumps for retrofitting existing buildings is much larger than in new buildings. However, the heat pump market in existing buildings today is …

Annex

29

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Ground-Source Heat Pumps Overcoming Market and Technical Barriers

The Annex investigated ideas and, depending on climate and application, identified systems that could improve performance and market attractiveness of ground-source heat …

Annex

28

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Test procedure and seasonal performance calculation for residential heat pumps with combined space and domestic hot water heating

The Annex investigated the testing of the most common combined heat pump systems with heating of domestic hot water by desuperheating subcooling of the condensate cascade…

Annex

27

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Selected Issues on CO2 as a Working Fluid in Compression Systems

This project focused solely on CO2 as a working fluid in compression systems. The main objective was to bring CO2 heat pumping technology closer to commercialisation, by…

Annex

26

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Advanced Supermarket Refrigeration / Heat Recovery Systems

This project investigated candidate advanced system design approaches to determine their potential for reducing refrigerant usage and energy consumption for both refriger…

Annex

25

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Year-Round Residential Space Conditioning Systems using Heat Pumps

This project aimed to define and demonstrate the technical feasibility of new packaged systems for year-round residential space conditioning using heat pumps. The work in…

Annex

24

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Absorption Machines for Heating and Cooling in Future Energy Systems

This project, which was concluded in June 1999, aimed to analyse the reasons behind the still limited implementation of absorption technology in heating and cooling. Part…