Air and electric energy two-stage heating and cooling system and method

Abstract

The invention discloses an air and electric energy two-stage heating and cooling system. The air and electric energy two-stage heating and cooling system comprises an energy tower, an energy tower heat pump unit, a heat storage water tank, a water source heat pump unit, a cooling tower, a load side and the like. In the heat supplying mode, the energy tower, the energy tower heat pump unit and the load side are connected through pipelines to form a closed circulation loop, and a first-grade heat supplying system is formed. The energy tower, the energy tower heat pump unit, the heat storage tank, the water source heat pump unit and the load side are connected in series through pipelines to form a closed circulation loop, and a second-stage heat supplying system is formed. In a cooling mode, the energy tower and the energy tower heat pump unit are connected with the cooling tower and the water source heat pump unit and the like in parallel through pipelines and enter the load side together, closed circulating loops are independently formed by the energy tower, the energy tower heat pump unit, the cooling tower and the water source heat pump unit, difficulties of application of air source heat pump and water source heat pump first-grade heat supplying system in the north are solved, running cost is saved, and commercialized large-scale promotion and application are realized. The invention further discloses an air and electric energy two-stage heating and cooling method.

Description

technical field [0001] The invention belongs to the technical field of heating and energy saving, and relates to an air-electric energy dual-stage heating and cooling system. The invention also relates to a method for using the heating and cooling system to supply heat and cool the load side. Background technique [0002] Energy tower heat pump technology is an energy-saving technology that realizes heating and cooling through energy towers and heat pump units. The relevant patents are all first-level systems that combine energy towers and heat pumps. It is used in southern regions where the winter temperature is above 0°C, and the effect is good. However, for northern regions, especially North China and Northwest regions, the lowest temperature over the years is between 0°C and -20°C, which exceeds the heating temperature range of the existing primary system, and cannot be popularized and applied in northern regions. [0003] In recent years, coal-to-electricity conversion ...

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Problems solved by technology

[0005] The purpose of the present invention is to provide an air-electric energy dual-stage heating and cooling system, which solves the problem that the existing energy tower technology cannot be applied in the northern region below 0°C

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