Compound solar air source heat pump

Abstract

The invention discloses a compound solar air source heat pump, and belongs to the heat supply field. The compound solar air source heat pump comprises an air source heat pump circulation system, an air source heat pipe circulation system, a solar heat pump circulation system, a solar heat pipe circulation system, a solar air source heat pump parallel-connection circulation system, a solar air source heat pipe parallel-connecting circulation system, a solar air source heat pump serial-connecting circulation system and a solar air source heat pipe serial-connecting circulation system. The compound solar air source heat pump can achieve switchover operation of multiple modes according to the solar radiation conditions and the change of outdoor air temperature, achieve the purpose of making full of various grades of solar energy and air thermal energy, effectively lower the primary investment of a heating system, improve the utilization efficiency and utilization degree of solar energy of different radiation intensities and air thermal energy of different temperature grades, and overcome the defects that when the solar energy is not sufficient, a traditional solar water heater can not reliably supply hot water, and an air source heat pump usually only can use air thermal energy but can not effectively use solar radiation energy.

Description

technical field [0001] The invention relates to a composite solar air source heat pump, which can make full use of renewable energy sources such as solar energy and air heat energy. According to solar radiation conditions and outdoor air temperature, heat pipe circulation and heat pump circulation of solar energy, heat pipe circulation of air source, heat pump circulation and its Reasonable switching of the combined cycle system to achieve high-efficiency heating and domestic hot water supply. This technology is especially suitable for heating in winter and domestic hot water throughout the year, and can also be used for supplementary heat of a ground source heat pump system, which belongs to the field of heating. Background technique [0002] Global building heating and domestic hot water consume a lot of energy. The high living standards and living habits of developed countries have caused huge demand for hot water and energy consumption, while developing countries are inc...

AI Technical Summary

Problems solved by technology

This type of scheme only improves the efficiency of the solar heat collector, and does not solve the heating problem when there is no solar energy; (2) adopt the direct expansion solar heat collector, that is, the refrigerant directly passes into the solar heat collector, which can The realization of solar direct heating and solar heat pump heating mode can reduce the power consumption of certain compressors (such as patent CN201110388936.2), but still does not solve the heating problem when there is no solar energy; (3) adopt a direct expansion solar heat collector An air-cooled evaporator and an air-cooled evaporator. When the solar radiation is sufficient, the solar energy can be directly heated, and the air source heat pump mode can be operated under the condition of no sun or weak radiation (such as patent CN201120054202.6), but this type of scheme cannot use low-radiation Solar energy cannot realize direct heating of air thermal energy and combined heating of solar energy and air thermal energy, and the effective utilization of solar energy and air thermal energy is not high enough.

[0005] It is worth noting that when the temperature of hot water required in some cases is low or the external temperature is high (for example, when the external temperature is 30°C in summer, low-temperature hot water of 10-20°C is prepared for inter-seasonal storage of air heat energy storage), the external air heat energy can also be directly heated, but at present, it is realized through the air source heat pump, resulting in high energy consumption for heating

[0006] All in all, there is still a lot of room for improvement in the current solar heat pump and air source heat pump technical solutions in terms of making full use of solar energy with different radiant intensities and air heat energy with different temperature grades with higher efficiency.

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