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Solar hot water
Solar thermal and, especially, active Solar Domestic Hot Water (SDHW) heating is a well-established renewable energy system. It can be one of the most cost-effective renewable energy systems available.|
It is appropriate for both residential and non-residential applications. For a single typical house, for instance, a suitable water heating system would occupy 2.5-4m2 of roof space. The cost would be £1,500-10,000 for a flat plate system that will provide around 50% of the typical hot water demand, and up to £5,000 for an evacuated tube system that will provide around 60%.
Solar hot water can be applied cost-effectively in a number of non-domestic building types, such as hospitals, nursing homes and leisure facilities, which have high demands for domestic hot water. Solar hot water systems are not so cost-effective in commercial buildings, where the demand for hot water is lower.
The main conclusions being that most systems are technically proven and will provide a significant contribution to hot water demand if correctly installed. Installer training and accreditation schemes supported by the DTI have helped allay fears of poor quality installations, and this is on-going.
Solar thermal systems normally operate with a back-up source of heat.The solar system pre-heats the incoming cold water, which is topped up by the back-up heat source when there is insufficient solar energy to reach the target temperature.
Solar collectors are best mounted at an incline with a southerly orientation, although orientations between south-east and south-west are acceptable. With increased collector area, orientations between east and west are also acceptable. Collectors can also be mounted on south-facing vertical walls or horizontally, so that a large proportion of the building stock is suitable for solar thermal systems.
There are four main types of solar collector that can be used in Solar heating system. These are:
1. Evacuated tubes.
2. Glazed selective surfaced flat plate.
3. Glazed non-selective surfaced flat plate.
4. Unglazed plastic collectors (mostly used for swimming pool heating).
Future BY Energy
Future BY Energy Ltd is a professional energy assessor company with a rich understanding of the UK energy market. We offer independent professional expertise in mechanical engineering for all domestic and commercial buildings and strategic energy advice. As expert designers and specifiers of heating-cooling systems, we pride ourselves in finding affordable energy efficient solutions for new and existing buildings. We have top level experience in a wide range of building types in both commercial and domestic sectors.
As registered energy assessors we provide:
• Domestic Energy Performance Certificates (EPC)
• SAP calculation and predicted energy assessment for new built dwellings (EPC-SAP/PartL)
• SBEM calculation for Commercial buildings (SBEM/Part L)
• Commercial Energy Performance Certificates (EPC)
• Display Energy Certificates for Public buildings (DEC)
• Air Conditioning Inspections (TM44)
• Asbestos surveys and consultancy
• Air permeability-Leakage test
• Sound test and acoustic consultancy
Please do not hesitate to contact, Behdad Yazdani, on 02081440820, who will be pleased to advise you.