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”.

• Start date: 1 October 2007

• End date: 1 October 2010

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
yet to be confirmed. 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

This website will be established.  Two workshops will be arranged within the annex.

Publications and results

The deliverables of the Annex will include:

• This Internet website.
• A description of a standard to determine COPs of thermally drivenheat 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.