Phase change thermal storage type auxiliary solar hot-water device of air source heat pump

Abstract

The invention discloses a phase change thermal storage type auxiliary solar hot-water device of an air source heat pump, comprising an indoor air cooled heat exchanger, an outdoor air cooled heat exchanger and a rotator compressor, wherein the outdoor air cooled heat exchanger is connected with the indoor air cooled heat exchanger respectively through a four-way reversing valve and an expansion valve; the rotator compressor is connected with the four-way reversing valve in parallel; the indoor air cooled heat exchanger is connected with a water cool tube heat exchanger; and the outdoor air cooled heat exchanger is connected with a phase change thermal accumulator in parallel. The device of the invention can carry out phase change energy storage when solar radiation is overmuch in summer, thereby avoiding over high water temperature to exceed use requirement, sever water tank heat dissipation and other drawbacks, and when the solar radiation is in short, heat supplement is carried out through phase change to release energy, and an air source heat pump is used to assist heating in necessity.

Description

technical field [0001] The invention relates to a solar water heating device, in particular to a phase change heat storage type air source heat pump assisted solar water heating device. Background technique [0002] With the development of solar thermal utilization to this day, great progress has been made both in terms of heat collection efficiency of collectors and in terms of cost performance. Solar water heaters have a very broad market in China, and with the continuous aggravation of the energy crisis, the use of solar energy has been paid more and more attention by the country. However, there are disadvantages of instability in solar radiation, and simply using solar water heaters cannot guarantee hot water needs anytime and anywhere. Most of the solar water heaters on the market now use auxiliary electric heating to make up for it. This unreasonable use of high-level energy has caused huge energy waste. In addition, the solar radiation in summer is often too suffici...

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Problems solved by technology

[0003] Purpose of the invention: Aiming at the problems and deficiencies in the above-mentioned prior art, the purpose of the invention is to provide a method that can avoid serious heat dissipation due to excessive solar radiation in the water tank in summer, and can phase change and release energy for heat supplement when the solar radiation is insufficient. , A phase change heat storage type air source heat pump assisted solar water heating device that can be assisted by an air source heat pump when necessary

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