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Heat pump hot water supply method and system for obtaining high-temperature water

A technology of heat pump hot water and high temperature hot water, applied in residential hot water supply systems, heating systems, heating methods, etc., can solve the problems of unguaranteed safety and reliability of the unit, low efficiency of the heat pump unit, etc., and achieve a breakthrough in water temperature Effects of restrictions, operational safety

Inactive Publication Date: 2009-03-25
SHANGHAI JIAO TONG UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

At present, the heat pump hot water system using conventional working fluid can only heat the water temperature to 55°C. If the water temperature exceeds 55°C and continues to heat it, not only the efficiency of the heat pump unit is extremely low, but also the safety and reliability of the unit cannot be guar

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  • Heat pump hot water supply method and system for obtaining high-temperature water

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Embodiment Construction

[0024] The following describes the embodiments of the present invention in detail with reference to the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention, and gives detailed implementation methods and processes. The invention can be made several simple deductions or substitutions, but the present invention The scope of protection is not limited to the following embodiments.

[0025] Such as figure 1 As shown, the heat pump hot water supply system that can obtain high temperature hot water involved in this embodiment includes: 1 water tank, 2 water tank, 3 water tank, 4 water pump, 5 water pump, 6 and 3 Water pump, 7 is the temperature measurement point No. 1, 8 is the temperature measurement point No. 2, 9 is the temperature measurement point No. 10, No. 1 solenoid valve, 11 No. 2 solenoid valve, 12 No. 3 solenoid valve, 13 No. 4 solenoid valve, 14 No. 5 solenoid valve, 15 No. 6 solenoid valve, 16 No. 1 heat exc...

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Abstract

The invention relates to a heat pump hot water supply method for obtaining high-temperature hot water in the technical field of heat supply of the energy class and a system thereof. A front-stage heat exchanger and a last-stage heat exchange which are in front-and-rear serial connection are used as radiators for heat dissipation; heat is released to a front-stage water tank and a last-stage water tank respectively; in a mode of changing water in the water tank, the starting water heating temperature of the front-stage water tank is higher than that of the last-stage water tank; the front-stage water tank absorbs a heat sensible part which has higher temperature in the side of a refrigerant; therefore, high-temperature hot water can be obtained in the front-stage water tank; simultaneously, the temperature of a switching point for water change in the last-stage water tank is limited so as to ensure that the heat pump system is still positioned at low condensing temperature, thereby breaking through the water temperature restriction of the prior heat pump hot water supply system and making the heat pump system operate safely, reliably and efficiently.

Description

Technical field [0001] The invention relates to a heating method and system in the technical field of heat pumps, in particular to a heat pump hot water supply method and system capable of obtaining high-temperature hot water. Background technique [0002] Compared with the traditional electric heating and gas heating and other hot water supply systems, the heat pump hot water supply system has occupied more and more market shares with its advantages of low energy consumption and environmental protection. However, the existing heat pump hot water supply devices directly heat the water in the hot water tank. The heat pump in this kind of hot water supply device works in medium and high temperature conditions for a long time, which causes problems such as high compressor power and high exhaust temperature, and the heat transfer efficiency is relatively low, and the working environment is very harsh. The efficiency and safety and reliability of the system have brought a negative imp...

Claims

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Application Information

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IPC IPC(8): F24D17/02F24D19/10
Inventor 吴静怡江明旒许煜雄王如竹孙鹏
Owner SHANGHAI JIAO TONG UNIV
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