Annex 34 – Thermally Driven Heat Pumps for Heating and Cooling
Introduction
The goal of Annex 34 is to reduce the environmental impact of heating and cooling by the use of thermally driven heat pumps. It will be based on the results from Annex 24, ”Absorption Machines for Heating and Cooling in Future Energy Systems”, and cooperate with the IEA-SHC task 38, “Solar Air-Conditioning and Refrigeration”.
Objectives
One of the main objectives is to quantify 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. From this, those areas and applications with the greatest environmental benefit, the best economics and the greatest market potential will be identified.
Project manager and participating countries
Germany is the Operating Agent. The other participating countries are: Austria, Canada, France, Italy, the Netherlands, Norway, Switzerland and the United States . National contacts can be found here. ›››
Activities
The following task-sharing activities are planned to be carried out by the participants:
Task A Market overview and state of the art
The market overview and state of the art will comprise analyses on thermally driven heat pumps in small and large systems for domestic applications in each participating country.
Task B Performance evaluation
In Task B a methodology on how to determine the Coefficient of Performance (COP) will be developed. The method will be extended so that a comparison of the primary energy consumption will be possible. The model will also include life cycle analyses and cost.
Task C Apparatus technology
In Task C, components will be developed taking into consideration experience of the components' long time running performances. The resulting data together with data on material properties will be gathered and listed in a database.
Task D System technology
In Task D includes designing the way the apparatuses are integrated in the system. For example, the integration of heat rejection, air/ground- heat sources, efficient burners, control strategies and so on. Available software for different deign stages will be surveyed and how to increase their availability will be investigated.
Task E Implementation
Case studies will be carried out in order to monitor and describe the thermally driven systems in their applications, in their specific market segments. From this, good practice guidelines and calculation models based upon experience will be presented. In addition, advice on training, dissemination and policies will be reported.
Information
More information can be found on the Annex 34 website: www.annex34.org. To further disseminate information about the project two workshops will be arranged within the Annex.
Publications and results
The deliverables of the Annex will include:
· An Internet website.
· A description of a standard to determine COPs of thermally driven heat pumps and sorption material properties.
· An online database about sorption materials for heat pumps and their properties.
· A reference guide describing presently available thermally driven systems with their applications. Existing software tools, their application and users' experience, will also be included.
· A final report describing the work carried out under the Annex.
· At least two workshops with complete proceedings.
| Last updated: 20 February 2008 |
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