Heat recovery energy-saving process for refrigeration storage

Abstract

The invention relates to the technical field of refrigeration storages, in particular to a heat recovery energy-saving process for a refrigeration storage. The heat recovery energy-saving process is capable of saving water and energy and reducing the use limitation, and comprises the following steps: 1, warm water preparation, specifically, water is heated to warm water with the temperature of 20-30 DEG C by the heat discharged during refrigeration of the refrigeration storage through a heat recovery exchanger, and the warm water is stored into a water storage tank; 2, defrosting, specifically, a refrigeration storage evaporator is defrosted by the warm water prepared in the step 1, and the water temperature is reduced to 5-10 DEG C after defrosting to obtain recovered water; and 3, recycling, specifically, the recovered water enters the water storage tank for storage, and is introduced into the heat recovery exchanger by a circulating pump.

Description

technical field [0001] The invention relates to the technical field of cold storage, in particular to a cold storage heat recovery and energy-saving process. Background technique [0002] As we all know, during the refrigeration process of the cold storage, the water vapor in the cold storage will form frost on the surface of the evaporator when it flows through the evaporator. When the frost accumulates to a certain thickness, it will affect the heat transfer of the evaporator, so it must be defrosted. The defrosting method is divided into Three types: 1. Electric defrosting has the disadvantages of high energy consumption, high failure rate, and potential fire hazards. The advantage is that it is easy to install and is generally used in small cold storage; 2. Water defrosting has the disadvantage of requiring large amounts of water. Utilize it once, drain it directly after defrosting, the cost is high, the advantage is fast defrosting, clean and safe; 3, hot fluorine defro...

AI Technical Summary

Problems solved by technology

[0002] As we all know, during the refrigeration process of the cold storage, the water vapor in the cold storage will form frost on the surface of the evaporator when it flows through the evaporator. When the frost accumulates to a certain thickness, it will affect the heat transfer of the evaporator, so it must be defrosted. The defrosting method is divided into Three types: 1. Electric defrosting has the disadvantages of high energy consumption, high failure rate, and potential fire hazards. The advantage is that it is easy to install and is generally used in small cold storage; 2. Water defrosting has the disadvantage of requiring large amounts of water. Utilize it once, drain it directly after defrosting, the cost is high, the advantage is fast defrosting, clean and safe; 3, hot fluorine defrosting, the disadvantage is that the process is complicated and the failure rate is high, and it cannot be completely defrosted at one time. It is mostly used in small and medium-sized aluminum pipe-type cold storage