Home Electrical Survey Limited Electrical safety testing, inspection & installation
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Home Electrical Survey Limited Electrical safety testing, inspection & installation
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Page under development - We have gained BPEC accreditation for designing and installing Solar Thermal Systems Solar Panels We are pleased to offer design and installation services for Solar Thermal Systems. This established technology has developed several types of solar collector including flat plate and evacuated tube, one further addition to the scene is a flat plate collector with a specially manufactured absorber contained within an evacuated housing. We are gathering data to compare how this performs against the other types. Flat plate collectors are often thought of as visually the most appealing type, some collectors may be integrated into the roofing system either during construction or as a retro fit option - all types have an on roof fixing option. The performance of flat plate compares well to evacuated tubes - however the latter does have the edge in low temperatures and the weaker winter sun when compared with most flat plates. Evacuated tubes are arranged in banks of collectors connected to a manifold where the heat exchange takes place, individual tubes may be replaced should one fail - but as with flat plate collectors they are manufactured from tough glass designed to withstand impact. Some collectors may be rotated to capture the most useful irradiation as they contain integral reflectors which may be positioned to maximise the available collection. Both types of collector are suitable for pitched roof, flat roof, wall or frame mounted according to the installation requirements. The size and number of collectors is a key factor when designing a system - as is the storage cylinder and control system, the components need to be matched to achieve the solar fraction (that part of the overall heating requirement delivered from Solar Energy). Solar Thermal systems are capable of delivering between 50% - 70% of the hot water requirements of the home on an annual basis, clearly with more solar energy available in the Summer the greater proportion of solar contribution will be between April to October - however any irradiation is available to be converted to hot water throughout the year and overall solar thermal will make a considerable contribution to reducing the household energy costs and carbon footprint. Many criteria are considered when designing a system, number of residents in the house, usage profile of the hot water, number of baths and showers & other hot water demands - plus orientation & shading of the installation site. A full survey is essential in order to accommodate the specific requirements of the installation and usage profile in order to design a suitable system capable of safely delivering the required solar contribution. The efficient storage of hot water is a key element of the whole system, a cylinder which is too small could create potential overheating issues which need to be mitigated against, conversely a cylinder which is too large for the collectors will never achieve the required temperatures - balance of components is key. It will often be advisable to upgrade the hot water storage cylinder to maximise the advantage of solar gain, however to minimise disruption we have also identified a source for an adaptor to modify some existing cylinders which will also reduce the initial cost. (although there are efficiency sacrifices) Some installations may be best served by installation of an additional storage cylinder known as a thermal store. If you would like more information on Solar Thermal or indeed would like to conduct a feasibility survey or quotation for flat plate or evacuated tube solar thermal panels please contact us for details, click on the envelope below to e-mail us or call 01543 317609.
We are also able to offer Air Source Heat Pump (ASHP) design and installation services. Heat pumps again are an established technology - however recent technical developments have improved their efficiency and appearance and now ASHP's are a viable source of renewable energy. ASHP's extract heat from the outside air - they even work astonishingly in temperatures below zero - by using a similar heat transfer method which is deployed in a domestic fridge the heat transfer medium undergoes a rapid increase in temperature in the pressurised ASHP system. Energy derived from this technology is suited to wet under-floor heating systems and direct hot water systems saving fossil fuel consumption and cost. We are Dimplex accredited Air Source Heat Pump Installers. If you would like more information on Air Source Heat Pumps or indeed would like to conduct a feasibility survey or quotation for an Air Source Heat Pump Solution please contact us for details, click on the envelope below to e-mail us or call 01543 317609.
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