Energy storage type heating and cooling combined supply system combining solar heat collection and heat pump

Abstract

The invention relates to an energy storage type heating and cooling combined supply system combining solar heat collection and a heat pump. The energy storage type heating and cooling combined supply system combining solar heat collection and the heat pump comprises a heat pump module, a solar heat collection module and an energy storage module, wherein the heat pump module comprises a compressor, a first liquid cooling type heat exchanger, an expansion valve and a second liquid cooling type heat exchanger which are sequentially connected to be in circulation; the solar heat collection module comprises a solar heat collector, a heat exchanger and a water pump which are connected and form circulation; and the energy storage module comprises a heat storage unit and a cold storage unit. Compared with the prior art, the heat pump, solar heat collection and energy storage technologies with an energy-saving effect are compounded, and energy conservation can be achieved to an extremely large extent; electricity cost can be greatly reduced through utilization of valley electricity; and besides, the energy storage module and the heat pump module are organically combined, a main engine of a heat pump can normally operate at the relatively low environmental temperature, and adaptability of the heat pump is strengthened.

Description

technical field [0001] The invention relates to the field of combined heat pump technology and refrigeration and air conditioning, in particular to an energy storage type composite solar heat collection and heat pump combined cooling and heating system. Background technique [0002] With the development of the national economy, the total energy consumption of buildings in my country is increasing year by year, and the proportion of the total energy consumption is gradually approaching 30%. Research shows that with the acceleration of urbanization and the improvement of people's quality of life, the proportion of building energy consumption in my country will eventually rise to about 35%. In addition, my country has a large proportion of high-energy-consuming buildings, which aggravates the energy crisis. Therefore, building energy conservation has become the focus of my country's energy conservation and emission reduction policies. Building energy consumption mainly includ...

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Problems solved by technology

This system can save electricity costs for operation, but due to the use of electric heating, it cannot achieve sufficient energy saving

[0005] The above-mentioned improvements to the air source heat pump and the addition of thermal storage units have resulted in more complex systems, large initial investment, and problems such as high energy consumption and expensive operation and maintenance due to unreasonable design

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