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Semimultiplex type heat pump cold supply and heat supply method and air conditionging system

A cascading heat pump technology, applied in heat pumps, refrigerators, refrigeration components, etc., can solve problems such as low energy efficiency ratio and geographical restrictions, so as to improve the coefficient of performance, reduce energy consumption, and improve indoor air quality and comfort Effect

Inactive Publication Date: 2005-03-02
浙江盾安机电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the current energy efficiency of air source heat pumps is generally low, and their use is restricted by region.

Method used

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  • Semimultiplex type heat pump cold supply and heat supply method and air conditionging system
  • Semimultiplex type heat pump cold supply and heat supply method and air conditionging system

Examples

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Embodiment 1

[0013] Such as figure 1 As shown, a semi-cascade heat pump cooling and heating air-conditioning system described in this embodiment is a cascade of two heat pumps. The first-stage heat pump consists of a compressor 4, a four-way reversing valve 3, an expansion valve 5, Heaters 6, 8, etc., and the second-stage heat pump is composed of compressor 1, four-way reversing valve 2, expansion valve 14, heat exchangers 15, 17, etc. The two-stage heat pump is cascaded through a water loop composed of water pipes 9, 12, 13, radiant heat exchange surface or dry surface air heat exchanger 10, electric three-way regulating valve 11, and water pump 7. Its working process is: the cold and hot water of the air conditioner from the first-stage heat pump heat exchanger 6 enters the heat exchanger 10 for heat exchange and is divided into two branches 12 and 13 through the three-way regulating valve 11, and the branch 13 flows through the heat exchange of the second-stage heat pump. After the dev...

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PUM

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Abstract

The invention discloses a half-covering heat pump refrigeration and heat supply method and its air conditioning system, comprising two-staged heat pump loop, the first stage to undertake sensible heat load and produces hot water with fairly low temperature or cold water with fairly high temperature for radiant heating and refrigeration or being used for surface convection recuperator. The second stage to undertake latent heat load and fresh air load, the two stages of heat pump are mainly covered by water loop which consists of radiation interchange surface or dry surface air heat exchanger, electric three way regulating valve and water pump, cold and hot water in air conditioning from first stage of heat pump heat exchanger flows into heat exchanger to exchange heat, being separated by three way regulating valve into two branch lines with one branch line joining with another one through heat exchanger of the second stage then back to heat exchanger through pump. The half-covering heat pump refrigeration and heat supply method has broken limitation of air source hot pump, extended the application area of air cooling heat pump, reduced energy cost, increasing air quality in room, totally speaking, it's a comfortable, energy saving air conditioning system.

Description

technical field [0001] The invention discloses an air-conditioning system for cooling and heating by using thermal power, in particular to a semi-cascade heat pump cooling and heating method and the air-conditioning system. Background technique [0002] A heat pump is a heat engine that works in a reverse cycle. It can extract heat energy several times its own power consumption from low-grade heat sources such as air, water, and soil, and convert it into higher-temperature heat energy as a cold and heat source for air conditioning. The advantages of energy saving and environmental protection are widely used in various buildings at present. However, the thermodynamic theory determines that under the current technical conditions, the energy efficiency ratio, cooling and heating capacity of air-cooled heat pumps using air as a low-temperature heat source are greatly affected by the ambient temperature, and are related to the building heating and air conditioning load requiremen...

Claims

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Application Information

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IPC IPC(8): F25B1/10F25B30/02
Inventor 张光玉
Owner 浙江盾安机电科技有限公司
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