Abstract
SYNOPSIS Over a number of years the local authorities of Horsens granted money to effect energy saving measures, the most cost-effective projects to be carried out first. Recently a combined solar system and heat pump system has been constructed together with a centralized control and supervision system. The solar system consists of 300 m2 flat plate solar collectors without cover glass and insulation. The heat pump system consists of two water-to-water heat pumps with a total effect of 70 kW. The total investment in the combined solar and heat pump system has been £93 000 (Dkr1.3m) including grants from the EEC and from the Danish Energy Administration. The plant has now been in operation for more than 1 year and based on the measuring equipment installed it may be stated that the energy plant has given a saving of 2.8 TJ (670 Gcal) from district heating in the first year which allowing for a use of electricity of 187 MWh, amounts to a total of £14 000 (Dkr 195 000). Based on a total investment of Dkr l....
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