Ongoing projects		Participants Bold text indicates Operating Agent
Annex 34	Thermally Driven Heat Pumps for Heating and Cooling  The goal of Annex 34 is to reduce the environmental impact of heating and cooling by the use of thermally driven heat pumps.  The economic, environmental and energy performance of integrated thermally driven heat pumps in cooling and heating systems in a range of climates, countries and applications will be quantified. From this, those areas and applications with the greatest environmental benefit, the best economics and the greatest market potential will be identified.	Austria, Germany, Netherlands and the USA
Annex 33	Compact Heat Exchangers in Heat Pumping Equipment  The principal goal of the annex is to identify compact heat exchangers, either existing or under development, that may be applied in heat pumping equipment – including those using vapour compression, mechanical vapour recompression and absorption cycles.  This has the aims of decreasing the working fluid inventory, minimising the environmental impact of system manufacture and disposal, and/or increasing the system performance during the equipment life  A second goal is to identify, where necessary propose, and document reasonably accurate methods of predicting heat transfer, pressure drop and void fractions in these types of heat exchangers.  A third goal is to present listings of operating limits etc. for the different types of compact heat exchangers, e.g. maximum pressures, maximum temperatures, material compatibility, minimum diameters, etc. and of estimated manufacturing costs or possible market prices in large scale production.	Japan, Sweden, UK and USA
Annex 32	Economical Heating and Cooling Systems for Low Energy Houses Heating energy demand of highly insulated, air tight dwellings with high glazing fraction has reached very low values down to about 15 kWh/(m2·a). However, due to the building features, there may be a need for comfort cooling in summertime. Heat pumps are favourable heating systems for these building types due to small power layouts and the possibility to heat and cool with the same unit. Main objective of the Annex is to evaluate different system solutions for the building needs heating, domestic hot water and cooling in low energy houses in order to minimise overall energy use and costs and to develop guidelines for the design and control of these systems.	Austria, Canada, Germany, Japan, the Netherlands, Norway, Sweden, Switzerland and USA
Annex 31	Advanced Modeling and Tools for Analysis of Energy Use in Supermarkets Supermarkets are the most energy intensive buildings in the commercial sector. The objective of the Annex is to develop reasonable accurate simulation and optimization algorithms and tools to assist in the analysis of the energy performance and in the development of energy efficient strategies for supermarkets. These simulation and optimizing algorithms could also evolve into tools for continuous optimization of the whole building, continuous commissioning and automated diagnostic of the different systems of the building, i.e. fault detection analysis. The Annex aims also at developing of energy (and maybe operating) efficiency indices for different countries and systems.	Canada, Germany, Sweden, UK and USA
Annex 30	Retrofit Heat Pumps for Buildings The Annex will investigate the availability, technology, economy, ecology and possible R&D trends of heat pump systems to retrofit low energy efficient space and tap water heating systems in existing residential buildings, taking into account that heat pumps are able to drastically reduce fossil energy consumption and the related greenhouse gas emissions. Space heating systems include first of all hydronic systems including heat sources, heat pumps and distribution systems but also air-to-air heat pump air-conditioners without heat distribution system. Heat pumps for retrofit should include electric heat pumps with zero or low GWP working fluids and gas-fired systems including ab- and adsorption.	France, Germany and the Netherlands
Annex 29	Ground-Source Heat Pumps Overcoming Market and Technical Barriers The Annex will investigate ideas and, depending on climate and application, identify systems that could improve performance and market attractiveness of ground-source heat pump systems.	Austria, Canada, Japan, Norway, Sweden, and USA

 

Last updated: 2008-06-30

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