What about solar heat pump water heater?
(5) has the advantages of convenient installation, long service life: the whole system adopts the split structure, convenient installation, and the installation position of solar collector / evaporator almost unlimited, piping system pressure type hot water storage tank is also very simple; refrigeration pipeline corrosion and winter "freezing" problem, the system life can reach more than 10 years.(6) the use of comfort: the vertical bearing heat preservation water tank and transverse scattering entering hole, reducing the cold and hot water mixing, is conducive to the temperature stratification in the water tank, improve the effective utilization rate of hot water and cold, hot phenomenon does not appear.(7) to realize the integration and construction: rely on the rational design of solar collector / evaporator can be combined with the implementation of the integration of the building, can not only enrich the architectural appearance; and can enhance the maintenance of the structure of the thermal insulation performance.
General solar water heater in sunny weather will have sufficient hot water, but continuous rainy days, hot water is obviously insufficient. The solar heat pump water heater has the following advantages:(1) all-weather work: solar heat pump water heater can work all the year round, all-weather, not affected by rainy days or nights, and lasts 40 ~ 60 degrees hot water.
(3) low operation cost: in spring, summer and autumn sunshine is good, operation cost of solar water heater is higher than the conventional solar water heater, but in the rainy day and night but the solar heat pump water heater can be realized during the day does not start the pump system, only when the water heater as the water temperature restart in the air source heat pump in the evening, you can let the system fully absorb solar energy, to achieve annual efficiency of 90%.(4) the safe operation: using small closed compressor, the household power supply safety, electrical access without a large current, complete separation of water and electricity, no risk of leakage; no burning, no exhaust gas, in addition to the "rabbit gas explosion", "gas poisoning" hidden dangers.
