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Solar energy and air source heat pump linkage hot water system and control method thereof

An air source heat pump and hot water system technology, applied in solar thermal power generation, solar thermal devices, heating devices, etc.

Active Publication Date: 2012-11-28
湖南亿利达实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006]2) Energy waste caused by automatic correction of some control parameters due to lack of monitoring of ambient temperature
[0008] B. Correction of the start-stop temperature of the air source heat pump: the general hot water system lacks an effective correction of the start-stop control temperature of the heat pump due to the change of the ambient temperature , causing unnecessary work of the air source heat pump or often working in the high temperature area of ​​50-55 °C throughout the year, the air source heat pump has low operating efficiency and high energy consumption. According to the data, at the same evaporation temperature, the hot water temperature drops 10°C, the efficiency of the air source heat pump increases by 16%
In addition, because the heat pump works at high evaporation temperature and high condensation temperature in summer, it is prone to high pressure protection and compressor overload, which shortens the service life of the heat pump
[0009]3) Energy waste caused by lack of constant monitoring of solar light intensity

Method used

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  • Solar energy and air source heat pump linkage hot water system and control method thereof
  • Solar energy and air source heat pump linkage hot water system and control method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0097] 1) Implementation of solar circulating water pump control

Embodiment 2

[0099] 2) Implementation of system hydrating solenoid valve control

[0100] There is a continuous liquid level sensor in the insulation water tank. The control system itself has time parameters. By controlling the liquid level at different times to achieve a long time, the gap is hydrated.Moisture is divided into two control methods: normal hydration and forced hydration.

[0101] From 17:00 to 8: 00 in the evening, the system stops hydrating; in the daytime 8: 00-17: 00, by judging the difference between the initial water level and 100%full water level in the morning, the amount of hydration in each time period (The control system will be divided into several water supply time periods from 8: 00 to 17:00, such as setting in an hour, and a water supply time period per hour).Set the full water level that needs to be achieved at the end of each time period according to the ratio of the difference to the daytime period.For example, at the initial water level at the initial water lev...

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PUM

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Abstract

The invention discloses a solar energy and air source heat pump linkage hot water system and a control method thereof. The system comprises a solar heat collector, an air source heat pump unit, a temperature preservation water tank connected with a system water-replenishing solenoid valve and a control system. The control method comprises the following procedures of: controlling a solar circulating water pump, controlling the system water-replenishing solenoid valve, controlling a circulating water pump of the air source heat pump unit and the air source heat pump system and controlling a user circulating water pump. With the solar energy and air source heat pump linkage hot water system and the control method thereof, the sufficient utilization of solar energy can be achieved, the operation of the air source heat pump unit is reduced as much as possible, the purpose of saving energy sources to maximum extent is achieved, and the demand of 24 h uninterrupted hot water for users is satisfied.

Description

Technical field [0001] The present invention involves a solar and air -source heat pump linkage thermal water system and its control method. Background technique [0002] The hot water system that is used in the current engineering solar energy and air source, the start and stop of the air source heat pump only rely on judging the water temperature of the thermal insulation water tank to control it. Differentiated control of the water level during the day and night (including hydrationControl), also lacks monitoring and control of changes in the light intensity of the environmental temperature and solar energy, resulting in a lot of unnecessary operation of the air source heat pump, resulting in greater energy waste, which is specifically reflected in: [0003] 1) Lack of energy waste caused by differentiated control (including hydration control) during the day and night of water levels [0004] The peak of the general hot water system is in the evening and evening. When the pea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24J2/00F24J2/04F24J2/40
CPCY02E10/44
Inventor 王德元
Owner 湖南亿利达实业有限公司
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