In terms of working principle, it does not belong to traditional solar products. Heat pump products are very different from conventional solar products. Conventional solar products use water as the medium and need to rely on direct sunlight or radiation to achieve the heating effect. However, heat pump products use a refrigerant to absorb thermal energy and solar radiation energy in the environment. air and pass it through. After the compressor is compressed and heated, it exchanges heat with water to achieve the heating effect. Therefore, the product has the same principle as the air conditioner.
Generally, solar water heaters will have enough hot water on sunny days, but obviously there will not be enough hot water on continuous rainy days. The solar heat pump water heater has the following advantages:
(1) All-weather operation: The heat pump solar water heater can work all year round, all year round, and is not affected by rainy days or nights and continues to provide energy. domestic hot water between 40°C and 60°C.
(2) Energy saving and environmental protection: It can save a large amount of electric energy and fossil fuels used in low temperature hot water production, and it There are no combustion wastes or smoke exhaust. uses non-polluted circulating working fluid, which can be called green and environmentally friendly products.
(3) Low operating costs: In spring, summer and autumn, when the sunshine is better, the operating cost of heat pump solar water heaters is higher than that of conventional solar water heaters, but on rainy days and nights, solar heat pump water heaters can achiever Do not start the heat pump system during the day, and only start the air source heat pump at night when the water heater is needed, depending on the water temperature, so that the system can fully absorb the heat pump. solar energy and achieve 90% energy savings throughout the year.
(4) Safe operation: use a fully enclosed small compressor, use a safe household power supply, no need for high current electrical access, complete separation of water and electricity, no risk of leakage, no burn; , no amount of exhaust gas generation can eliminate the hidden dangers of "gas explosion" and "gas poisoning".
(5) Easy installation and long service life: The whole system adopts a split structure, easy to install, and the installation position of the solar collector/evaporator is almost unlimited. -C'e rolling hot water storage tankst also very simple: the refrigeration pipeline has no corrosion and "antifreeze" problems in winter, and the service life of the system can reach more than 10 years.
(6) Comfortable use: The use of pressure-insulated vertical water tanks and cross-diffusion water holes reduces the mixing of cold and hot water, which promotes stratification of temperature in the water tank and improves efficiency. use of hot water. It is effective and does not feel hot or cold.
(7) Easy to integrate with the building: Relying on reasonable design, the solar collector/evaporator can be integrated with the building, which can not only enrich the appearance of the building, but also improve insulation. of the performance of the maintenance structure.