Modular cascade heating scale heating air energy station system

Abstract

The invention discloses a modular cascade heating scale heating air energy station system. The system comprises a first-stage heating system, a second-stage heating system, an intermediate medium circulating pipeline and a user side circulating pipeline. The first-stage heating system comprises at least one first-stage heating module. The first-stage heating module comprises at least one first-stage heating unit. The first-stage heating unit comprises an air heater, a first-stage compressor, a first-stage condenser and a first-stage expansion valve. The second-stage heating system comprises atleast one second-stage heating module. The second-stage heating module comprises at least one second-stage heating unit. The second-stage heating unit comprises a second-stage evaporator, a second-stage compressor, a second-stage condenser and a second-stage expansion valve. The invention aims at providing the modular cascade heating scale heating air energy station system which is large in heating capacity, high in water supply temperature, high in heating efficacy, good in heating continuity, small in occupied space area, small in noise, flexible in combination, easy and convenient to mountand wide in application range.

Description

technical field [0001] The invention relates to the field of heat supply, in particular to a heat supply system for recycling air energy. Background technique [0002] Under the background that the country pays more and more attention to environmental protection, the use of clean heating methods for heating has become the development trend of heating. Because air energy is ubiquitous, inexhaustible and inexhaustible, the air source heat pump heating technology using air energy for heating has become one of the main ways of clean heating, but the traditional air source heat pump technology has the following problems: [0003] 1) The ambient temperature of the application is limited. The vortex type is generally applicable to an ambient temperature above -25°C, and the single-machine two-stage screw type is applicable to an ambient temperature above -35°C; [0004] 2) The current water supply temperature of the air source heat pump is usually 40-55°C, which cannot be used in ...

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Problems solved by technology

[0003] 1) The ambient temperature of the application is limited. The vortex type is generally applicable to an ambient temperature above -25°C, and the single-machine two-stage screw type is applicable to an ambient temperature above -35°C;

[0004] 2) The current water supply temperature of the air source heat pump is usually 40-55°C, which cannot be used in places with high heating temperature requirements (such as 80-90°C);

[0005] 3) The northern region adopts traditional air source heating, the lower the ambient temperature, the greater the heating demand load; but on the contrary, the lower the ambient temperature, the more severely the heating capacity of the air source heat pump attenuates, the contradiction between supply and demand is prominent, and the heating cannot be guaranteed

[0006] 4) The heating capacity of a single unit is small, the maximum heating capacity of a single unit of the vortex type is generally below 100kW, and the maximum heating capacity of a single unit of a single-unit two-stage screw type is below 350kW;

[0007] 5) The defrosting of the air source heat pump needs to stop running, so that the heat supply is interrupted and the heat supply is not continuous, which affects the heat consumption of users

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