Air-source heat pump and solar heat collecting device combined heating system

Abstract

The invention relates to an air-source heat pump and solar heat collecting device combined heating system. A water storage tank is provided with a hot water outlet and a hot water inlet; a first heatexchange coil tube is arranged inside the water storage tank; an air-source heat pump comprises an outdoor unit and an indoor unit; a second heat exchange coil tube and a third heat exchange coil tubeare arranged inside the indoor unit; a liquid storage tank, a filter, an expansion valve, an evaporator, a four-way valve, a gas and liquid separator, a compressor and the four-way valve which are arranged inside the outdoor unit sequentially communicate with the third heat exchange coil tube arranged inside the indoor unit to form a closed pipeline; a water inlet and a water outlet which are formed at the indoor unit separately communicate with the two ends of the first heat exchange coil tube; a water charging pipe and a water discharging pipe of a solar heat collector separately communicate with the two ends of the second heat exchange coil tube which is arranged inside the indoor unit. The air-source heat pump and solar heat collecting device combined heating system provided by the invention solves the problem that the air energy efficiency is low under the temperature of -30 DEG C, is simple in design, also improves the energy utilization rate to 80%, realizes continuous supply of hot water and guarantees normal running of the heating system.

Description

technical field [0001] The invention belongs to the technical field of heating, and in particular relates to a combined heating system of an air energy heat pump and a solar heat collecting device. Background technique [0002] The solar radiant floor heating system converts sunlight energy into heat energy, and heats water from low temperature to high temperature to meet the hot water use in people's life and production. There are certain problems in the traditional solar radiant floor heating system. No matter where you are, there are cloudy, rainy and snowy weather and insufficient sunshine in winter every year. In this climate, hot water is mainly heated by electricity, and some products are heated by gas. On average, more than 25% to 50% of the hot water needs to be heated by electricity every year, which varies from region to region. In areas with many cloudy days The actual power consumption is even greater. The air energy heat pump water heater can absorb the low-t...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a combined heating system of an air energy heat pump and a solar heat collector, which solves the problem of low air energy efficiency below -30°C. The design is simple and the energy efficiency utilization rate reaches 80%. The continuous supply of water ensures the normal operation of the heating system

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