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Frost-free type air source heat pump system

An air source heat pump and air preheater technology, which is applied in the field of refrigeration technology and air source heat pump, can solve the problems of cooling medium regeneration, achieve the effect of avoiding freezing and improving the effective utilization rate

Inactive Publication Date: 2010-01-27
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the accompanying problem is to solve the problem of cooling medium regeneration

Method used

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  • Frost-free type air source heat pump system
  • Frost-free type air source heat pump system
  • Frost-free type air source heat pump system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0040] Embodiment 1-1, that is, the regeneration heat source is the subcooler 12 of the heat pump subsystem, and the fluid after regeneration is driven by the third liquid pump 11 .

[0041] The specific implementation process is as follows: the heat absorption cycle of the solution in the solution heat absorption subsystem is that the solution with a higher concentration enters the outdoor heat exchanger 13 of the heat pump unit, and after exchanging heat with the outdoor heat exchanger 13, the temperature of the solution decreases while the concentration remains unchanged. After entering the cooling tower to absorb the sensible heat and part of the latent heat of the ambient air, the temperature of the solution increases and the concentration decreases. Part of the dilute solution flowing out from the first liquid pump 9 enters the regeneration subsystem through the inlet of the first regulating valve 7, and the regenerated concentrated solution It flows out from the outlet o...

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Abstract

The invention discloses a frost-free type air source heat pump system. The system carries out heat pump circulation, can absorb heat from ambient air and can avoid a frosting phenomenon. The system utilizes the characteristic of the absorption / desorption of a similar salt solution, and the heat is absorbed from an ambient environment by a cooling tower. The system comprises a heat pump subcycle part, a solution heat-absorbing subcycle part and a solution regeneration subcycle part. The solution regeneration subcycle part comprises a solution heat regenerator, a solution / air preheater, a first regenerator, a second regenerator and a regenerated heat absorber. After being preheated by the first regenerator, the ambient air enters the second regenerator, and then flows out of the solution / air preheater after water in a regenerated solution is absorbed, and the effluent air is used for preheating part of a low-temperature dilute solution entering the solution / air preheater. The invention avoids the occurrence of the frosting condition of the traditional air source heat pump system; the utilization rate of equipment and energy resources is enhanced.

Description

technical field [0001] The invention relates to the technical field of refrigeration technology and air source heat pump, in particular to a frost-free air source heat pump system. Background technique [0002] The air source heat pump system is currently being widely used in the south of the Yangtze River Basin in my country. However, in the areas south of the Yangtze River, the relative humidity of the air in winter is generally above 75%. If the ambient temperature is around 0°C, the heat pump is prone to frost. The problem of frosting on the evaporator in winter is one of the important factors affecting the heating performance and widespread promotion of air source heat pumps. Water-cooled chillers are also widely used in many industrial or civil buildings in summer, but they are often idle in winter and replaced by separate boilers for heating, resulting in double-layer disadvantages of low equipment utilization and high energy waste. If the cooling tower of the water...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F25B15/00F25B30/04F25B30/06F24J2/00
CPCY02E10/40Y02B30/62Y02A30/27
Inventor 陈光明刘利华唐黎明袁一军
Owner ZHEJIANG UNIV
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