Capturing Solar Energy (CIBSE Knowledge Series) by Chartered Institution of Building Services Engineers

By Chartered Institution of Building Services Engineers

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Extra resources for Capturing Solar Energy (CIBSE Knowledge Series)

Example text

Part P applies to any electrical work, including photovoltaic power. BRE Environmental Assessment Method (BREEAM)(42) A BREEAM rating can be improved by the use of solar systems. Code for Sustainable Homes(43) Level 3 and above is unlikely to be achieved without the use of renewable energy technologies. Energy Performance of Buildings (Certificates and Inspections) (England and Wales) Regulations 2007(44) Solar technologies can contribute to a higher rating for Energy Performance Certificates (EPCs).

The system is used to preheat ventilation air so the additional costs for the air handling system are minimal. The area of collector required will depend on the air volume and temperature rise required. The collector is installed as an additional surface layer, so any cost savings from displacing other cladding materials are likely to be small. Where the supplied air provides de-stratification there may be additional cost benefits. 4 Solar cooling Solar cooling is also a relatively new technology.

Systems are available commercially but volume sales are small and therefore capital costs are high. The costs for the solar collector system will be similar to those for a solar heating system for domestic hot water using high efficiency collectors. A recent study of solar cooling installations across Europe(29) found that total system costs for absorption cooling were about £5000 / kW cooling for a 70 kW cooling system and a 210 m2 flat plate solar collector, reducing to about £2700 / kW cooling for a 460 kW cooling system and a 1400 m2 flat plate solar collector.

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