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The new heat pump solar water heating equipment cancels the solar collector board, and the hot water is often used in the rainy days. The auxiliary heating energy consumption is lower than that of the traditional solar water heater, the solar water heating project investment is reduced by 50%, and the solar water heating project is reduced by 95%.
1. [Traditional solar water heating project]: It has the characteristics of energy saving of hot water. The traditional solar water heating project is a kind of equipment that directly uses solar heat to make hot water. It can not be heated by the rainy days and no sunlight at night. Auxiliary heating equipment is required to ensure the supply of hot water throughout the day and throughout the year. So has the following disadvantages:
1. It is not possible to make hot water in rainy days. 50% of the year is to use auxiliary heating equipment to make hot water.
2. In actual use, only one-third of the time (daytime) can produce hot water. In other days, there is no sun to make hot water. In order to meet the needs of hot water for all-day use, it is necessary to increase the solar collector. The area increases the volume of the hot water tank, which only increases the cost and increases the floor space. It is difficult for users with small space to implement.
3. According to the accumulated time calculation, the solar hot water equipment can only produce hot water for an average of 1500 hours per year, and the amount of hot water is unstable. The rest of the time and insufficient hot water need auxiliary heating equipment to make hot water (most of the south of the Yangtze River in China) The annual sunshine time in the area is between 1000-2000 hours).
Second, [heat pump solar water heating equipment]:
The heat pump type solar water heating equipment uses hot water pump technology to make hot water. It is a kind of equipment that uses solar heat to make hot water indirectly. It is hot water in the rainy days and nights. It does not require auxiliary heating equipment to ensure hot water supply throughout the day and throughout the year. need.
The heat pump type solar water heating device absorbs the heat in the sunlight-irradiated air to make hot water, does not require a huge solar collector plate, and replaces the solar collector plate with air. Since it stores a large amount of heat, it can guarantee 365 days of the year. Intermittent hot water, solar collector panels are eliminated, and users with smaller space can also use it. So has the following advantages:
1. The energy saving effect is the same as that of the traditional solar water heating equipment: the auxiliary heating energy consumption cost is less than or equal to the traditional collector plate type solar water heater. That is, an average of 1kwh (degrees) of electricity can generate 3kw of heat energy, the same power consumption is greater than the amount of hot water produced by the collector plate type solar energy, and the same power consumption is 3 times higher than that of the electric hot water boiler.
2, the use alone is not affected by the rainy days, can achieve 365 days a year, 24 hours a day to make hot water.
3, do not need solar collector panels, reduce the floor space by 95%.
4. Since the solar collector panels with higher cost are eliminated, the investment is reduced by 50% compared with the traditional solar hot water project.
5. Since the hot water is produced 24 hours a day, the volume of the hot water storage tank can be reduced by 50-70%.
6. The use of solar water heating equipment can reduce the area of ​​solar collectors by 50%, save a large amount of solar collectors, and reduce the volume of hot water tanks.
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