Sheltered housing gas-absorption heat pump, Enoch House (CP742)
|LEAD AGENCY:||Colchester Borough Homes|
|PROJECT SUMMARY:||This project will install a gas-absorption heat pump (GAHP) to Enoch House sheltered housing scheme to replace the existing gas boilers. The project will examine the effectiveness of this new and innovative technology in delivering heating cost reductions to residents.
Fabric efficiency improvements will be provided within the overall retrofit project (insulation, lighting, and energy generation measures, the former two not funded by NEA), so it will be necessary to monitor the real life efficiency of the heating system rather than just the fuel savings as this will allow savings directly attributable to the GAHP to be calculated.
One of the first GAHPs in the UK was installed by Colchester Borough Housing in Worsnop House, another of their sheltered housing schemes, and has proven to be a success in terms of efficiency and reliability, based upon some limited monitoring undertaken. They would now like to repeat the GAHP at Enoch House but undertake more intensive monitoring to determine savings attributable to this technology on a scheme wide and per unit basis.
|EVALUATION METHODOLOGY:||Conduct household interviews with a sample of properties to capture household behaviours (and previous energy expenditure). Residents will be required to provide previous heating bills and meter readings. Heating bills from the gas-fired boilers in the communal areas will also be required.
Supplement household interviews with energy and thermal (temperature and heat meters) data logging conducted with recognised calibrated stand-alone devices, plus manual meter readings from householders in individual properties. The applicant will ensure that a gas meter and heat meter are installed on the input and output respectively of the GAHP to monitor its use and heat output. Monitoring will be for 12 months, and must include a full winter heating period.
|PROJECT OUTCOMES:||The application of a Gas Absorption Heat Pump in the UK is highly innovative as very few of these have been installed to date and the technology is not well understood. The inclusion of a detailed monitoring strategy will allow the savings attributable to this measure to be calculated accurately on a scheme wide and per unit basis.|
|REGION IN WHICH PROJECT WILL BE DELIVERED:||Eastern|
|LOCAL AUTHORITY AREA/KEY LOCATIONS IN WHICH PROJECT WILL BE DELIVERED:||Colchester|
|DETAILS OF TECHNOLOGIES TRIALLED:||Gas-absorption heat pump – make: Worcester Bosch, model: GHP AWO 38 L2|
|ELIGIBLE HOUSEHOLDS ASSISTED|
|NEA GRANT WITH MATCH FUNDING||MATCH||TOTAL|