Double source parallel step type heat pump hot water air-conditioning system

Abstract

The invention discloses a double source parallel step type heat pump hot water air-conditioning system. The system preferentially utilizes solar energy to collect heat and utilizes a geothermal heat pump or an air source heat pump for combined heating and air conditioning, and can supply hot water. The system comprises a high temperature heat source heat exchange circle which preferentially utilizes solar energy, two heating air-conditioning heat exchange circles which are connected in parallel, a four-valve parallel step heat pump circle and a low temperature heat exchange system. A heat accumulating tank is a heat connecting and heat exchanging hub. The system can absorb heat energy in soil or air source by using a low-temperature heat pump heat accumulating circle, or further accumulate heat by using a solar heat collecting system and other high temperature heat sources. The heat accumulating water tank can directly supply heat to the heating system when the water temperature is high, or indirectly supply heat after enhancing the heat grade through the heat pump heat supply circle when the water temperature is low. In summer, the system has two air conditioning modes; and the system can cool and lower the temperature for indoor, and transfer excess heat to domestic hot water or discharge the excess heat to the low temperature heat source. When the heat accumulating water temperature exceeds the limit, the system can also discharge heat in an emergency.

Description

technical field [0001] The invention patent belongs to the design and development of building energy collection, storage and supply system equipment. It mainly involves heat collection from high-temperature heat sources such as solar or electric heating and coal-fired gas boilers, hot water heat storage and domestic hot water supply, vapor compression refrigeration cycle, ground source heat pump and heating and air conditioning equipment. Background technique [0002] In the 21st century with the rapid development of science and technology, all walks of life in society are undergoing rapid changes. This has led to a huge increase in the energy consumption of the entire society in the fields of production and life. Energy has become the most critical social and economic issue in this century, and the energy crisis is entering our life at an unexpected speed. The demand for traditional primary energy is increasing day by day, but the output is limited, so the consumption cos...

AI Technical Summary

Problems solved by technology

However, all kinds of new energy sources have their own weaknesses when used alone for heating. For this reason, we must seek a reasonable way to comprehensively utilize multiple energy sources, and save energy as much as possible on the basi

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