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In situ measurement of the performance of heat pumps in domestic dwellings - EE0201

Experimental study of heat pumps. This study is managed by EST.

The use of heat pump technology to generate space and water heating for domestic homes has been well established in America and Europe for some time now, and heat pumps are now rapidly gaining market share in the UK as energy suppliers (npower, Powergen), LCBP, SCHRI and other community schemes (Community Energy Services, NEA) begin to roll out this technology across different sectors. Anticipated sales volumes of domestic heat pump technologies in 2007 are between 2000 and 3000 units. As the technology becomes established, and with the introduction of heat pumps as an eligible measure under the new CERT, sales are expected to grow at 50-100% p.a. in the UK.

There is little measured evidence of the in-situ performance of heat pump technologies and carbon saving calculations from installations are generally based on the manufacturer`s claims. In the same way we have set up a monitoring programme for micro-wind turbines, EST proposes that a similar exercise is undertaken for heat pumps. We would coordinate a national monitoring programme which would install monitoring equipment in a sample of homes to allow detailed performance measurements to be undertaken.

In addition there are several other initiatives currently installing heat pumps in the UK with varying levels of commitment to the evaluation and monitoring of performance. EST is in contact with most of these and would act as a central data repository and data analyst for any performance data collected.
The objective of this project will be to measure the in-situ performance, under normal operating conditions, of a sample of heat pumps (both air and ground source heat pumps) in UK homes.

The Coefficient of Performance (CoP) and Seasonal Performance Factors (SPF) for the heat pumps will be established and carbon savings from the installations calculated. These can be compared to both manufacturers published data and also the assumptions used in the CERT Illustrative Mix.

Analysis will be undertaken to investigate the parameters that can impact on heat pump performance, such as system design, household heating / hot water demand and geographical location (which will have an impact on the ground /air source heat available). The suitability of heat pumps in providing adequate internal comfort conditions will be established.
Time-Scale and Cost
From: 2007

To: 2010

Cost: £585,000
Contractor / Funded Organisations
Energy Saving Trust
Energy Efficiency              
Environmental Protection              
Field Measurements              
Hard to Treat homes              
Heat Exchange              
Fields of Study
Energy Efficiency