Direct-flow type solar water-heating system and its water-flow control method
A solar hot water and water flow control technology, applied in the field of solar energy applications, can solve the problems of frequent start and stop of circulating water pumps, affecting service life, reducing heat collection efficiency of heat collectors, etc., to improve heat collection efficiency, increase service life, and increase utility sexual effect
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[0019] Example 1:
[0020] Such as figure 1 Shown is the direct current solar water heating system of the present invention.
[0021] For domestic hot water, the upper temperature limit T(on) of the temperature at the outlet of the predetermined heat collector 1 is 45°C, and the lower temperature limit T(off) is 42°C. When the temperature value T1 at the outlet of the collector 1 reflected by the temperature sensor PT1 is less than or equal to the preset temperature lower limit of 42°C, the inverter 7 controls the circulating water pump 6 to prohibit the operation; when the temperature reflected by the temperature sensor T1 When the temperature value T1 at the outlet of the collector 1 is greater than or equal to the preset upper temperature limit of 45°C, the inverter 7 controls the operation of the circulating water pump 6, and adjusts the operating frequency of the circulating water pump 6 in time according to the change in the temperature at the outlet of the collector 1. Thus...
Example Embodiment
[0022] Example 2:
[0023] Such as figure 1 Shown is the direct current solar water heating system of the present invention.
[0024] For a warm water swimming pool, the upper temperature limit T(on) of the outlet temperature of the predetermined heat collector 1 is 33°C, and the lower temperature limit T(off) is 30°C. When the temperature value T1 at the outlet of the collector 1 reflected by the temperature sensor PT1 is less than or equal to the preset temperature lower limit of 30°C, the circulating water pump 6 is prohibited from working under the control of the inverter 7; when the temperature reflected by the temperature sensor PT1 When the temperature value T1 at the outlet of the collector 1 is greater than or equal to the preset temperature limit of 33°C, the inverter 7 controls the circulating water pump 6 to work, and adjusts the operation of the circulating water pump 6 in time according to the temperature change at the outlet of the collector 1 Therefore, the rotatio...
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