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At present, in the household hot water market, solar water heaters are popular for their avant-garde concepts and the gimmick of free energy. However, in the actual use of solar water heaters, it is impossible to make them completely free. Since they cannot work on rainy days and at night, solar water heaters need to install electric auxiliary devices. With more and more haze weather in cities, solar water heaters use electricity most of the time to work, causing great energy waste. The advantages of heat pumps are very obvious, mainly reflected in four aspects:
1. In terms of operating costs, conventional solar energy operates at almost zero cost under direct sunlight, but unfortunately it can only rely on auxiliary systems to work on rainy, snowy days or at night. Statistics show that under normal use, the annual power consumption of conventional solar auxiliary systems is higher than the total annual power consumption of heat pump units.
2. In terms of investment: if the same water supply effect is achieved, the capital investment in heat pump hot water units is less than that of conventional solar products, and economic electricity can be used to make hot water reserves when electricity consumption is low.
3. From the aspect of use: conventional solar energy products are obviously affected by the weather, and they cannot work on rainy days, snowy days, and nights, while heat pump hot water units can work as usual regardless of cloudy days, rainy days, snowy days, nights or sunny days, and provide hot water all day long.
4. Other functions: The use of heat pump units is not restricted by location, and can be placed anywhere, and the space occupied is very small, while conventional solar energy needs to occupy a large space to achieve the same heating effect, and must be placed outdoors; heat pump units can generate cold air while making hot water, which can be used for auxiliary functions such as dehumidification, cooling and air filtration.
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