Solar collector is a device for collection of the heat energy from the Sun and for its transfer to the heat-agent. Usually they are used for the needs of the hot water supply and space heating of the premises.
The main criteria determining the efficiency of the solar collector is the reduced optical performance coefficient. The higher it is, the more efficient the solar collector is – the more solar energy is transformed into the heat energy.
The system of the solar water-heater, additionally to the collector itself, consists of the following elements: storage tank (accumulator), circulating pump, regulating device, etc. Solar collectors are installed on the roof top (oriented to south or south-west) while other components are inside the building. Collectors heat a fluid to around 100 °C not only on sunny days but also when it is cloudy. Hot water is stored in a special accumulating tank for further use. For a single family house, a system with about 6m² of solar collectors can provide more than 60% of annual hot water demand.
The Technology Selector contains solar collectors (flat-plate or vacuum tubes) with the reduced optical performance coefficient around 70%, as well as additional elements with the corresponding efficiency: distribution pipes with the insulation thickness not less than 30 mm, hot water storage tanks with the heat insulation of walls not less than 100 mm thick.
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- Inclusion of the technologies, equipment and materials in the Technology Selector is based solely on qualification under IQ energy’s ‘Minimum Energy Performance Standards’** and does not constitute an endorsement of the producers or suppliers of these products by the EBRD. Although every effort has been made to present correct and up to date data, EBRD does not accept responsibility for the accuracy of the data presented.
**Included technologies have been assessed to result in at least a 20% higher energy performance than the market average
- The savings are calculated for the refurbishment of an average dwelling or the replacement of an average equipment in Ukraine. The actual savings of individual refurbishment projects/equipment can differ from the indicated savings due to specific climatic conditions, size of the dwelling/equipment, consumer behaviour, etc. The displayed energy efficiency measures only have an impact on individual household's bills (savings) if there is consumption based billing available.
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