A dual-source heat pump water heater system for supplementing air and increasing enthalpy

A technology of supplementing air to increase enthalpy and dual-source heat pump, which is applied to fluid heaters, lighting and heating equipment, etc., can solve the problems of high power consumption and low utilization efficiency of the system, and achieve improved heat transfer performance, improved coefficient of performance, and reduced The effect of power consumption

Active Publication Date: 2021-07-02
SOUTHEAST UNIV
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  • Abstract
  • Description
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Problems solved by technology

[0005] Existing air-conditioning system objects are mostly concentrated in closed spaces, and the air-conditioning system using solar energy only uses its light and heat part, the utilization efficiency is low, and the system consumes a lot of power

Method used

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  • A dual-source heat pump water heater system for supplementing air and increasing enthalpy

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Embodiment Construction

[0027] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0028] The principle of the present invention is that the system uses a double evaporator structure, the second fluorine water plate heat exchanger 8 connected to the photovoltaic photothermal plate and the air-cooled fin coil heat exchanger 11, and a considerable amount of heat is added between the two evaporators. In the economizer 10 of the gas-liquid separator, a regenerator 7 is added to the high-pressure section at the same time, so that the high and low pressure gases exchange heat with each other for heat recovery, and at the same time, the refrigerant at the outlet of the regenerator 7 is divided into two paths, and one path passes through The throttling valve...

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Abstract

The invention discloses a dual-source heat pump water heater system for supplementing air and increasing enthalpy, which solves the problem that ordinary series-connected dual-source heat pumps cannot reasonably distribute refrigerant flow, and realizes automatic distribution of refrigerant flow at the low-pressure end under heating conditions. At the same time, an economizer is added to the system to realize the subcooling of the hot end, and at the same time, the gas phase in the refrigerant flow in the primary evaporator in the low pressure section is extracted, thereby enhancing the heat exchange effect in the secondary evaporator, and at the same time exerting The superiority of the air supply and enthalpy increasing system enhances the low temperature adaptability of the system, expands its application range, and saves energy and is highly efficient. A recuperator was added to the system, another step to increase heat transfer, with a higher coefficient of performance.

Description

technical field [0001] The invention relates to a novel dual-source heat pump water heater system for supplementing air and increasing enthalpy, which belongs to the fields of solar energy, air source, and air supplementing and increasing enthalpy heat pumps. Background technique [0002] At present, there are two connection modes of solar energy and air source heat pump water heater systems in parallel and in series. Parallel systems have been widely seen in relevant literature, and the systems are relatively mature. However, there are many problems in the construction of series systems, such as uneven flow distribution. It is a major reason that affects its heat transfer performance, and the existence of the gas phase in the two-phase heat transfer of the traditional evaporator seriously inhibits the heat transfer coefficient of the system, and the heating performance of the conventional air source heat pump decreases at low temperature conditions, and the pressure Ratio i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24H4/02F24H9/20
CPCF24H4/02F24H9/2007
Inventor 张小松邱君君
Owner SOUTHEAST UNIV
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