Polyurethane spraying is widely used in large and medium-sized refrigerators. Different well-known brands are produced at different prices， and the product quality is relatively large. However， it is not high-quality or good goods. This is the result of long-term cooperation.
The selection of equipment for the construction of equipment cold storage is closely related to the size， type and budget of the cold storage.
Shegord AvilaThe circuit system must be -wire system. If there is no ground wire， the ground wire shall be added.
The refrigerator compressor unit generally adopts high-end units with guaranteed quality and strong operation stability. The evaporator adopts the imported joint venture refrigeration air-cooled evaporator，Shegord AvilaMedical management， which has the advantages of low temperature resistance， low energy consumption and long service time， It can effectively save the operation cost of cold storage.
Taloqan There are many application scenarios of cold storage， which are different. For a long time， it provides various cold storage installation， cold storage installation， cold storage construction， fruit preservation cold storage， medical cold storage，Shegord AvilaCold storage of drugs， on-site settlement， and has offices all over the country for long-term cooperation. Different purposes， functions and designs， so what needs to be understood in cold storage design?
When hot ammonia defrosting or electric defrosting is selected as the cooling fan， professional cold storage installation， cold storage installation， cold storage construction， fruit preservation cold storage， medical cold storage， safety， environmental protection and economy! The products are exported to foreign countries and are deeply trusted. Defrosting and drainage can be discharged immediately. Electric heat tracing and insulation can be selected for the defrosting and drainage pipeline of the warehouse location.
The medical cold storage has been widely used in the industry. For the use of the medical cold storage project， we must combine the performance of the product and store it according to the temperature and humidity required by the product. The automatic temperature box also needs to be used outside the product cold storage. At the same time， the management personnel must be familiar with the operation steps of the medical cold storage project.
The equipment that needs to be installed in the warehouse and put into the warehouse shall be installed in place or placed in an appropriate position in the warehouse; The wall warehouse board shall be installed from the corner of the warehouse body， and the professional cold warehouse shall be installed. The cold warehouse shall be installed. The cold warehouse shall be constructed. The fruit fresh-keeping cold warehouse and medical cold warehouse shall have high pressure rating， good waterproof performance， fire and high temperature resistance strong overload capacity， corrosion resistance， radiation protection and long service life. The corner shall be temporarily fixed with . color plate angle steel; When installing each wall panel， evenly apply two layers of foaming material on the joint surface of male and female groove， and apply one layer of foaming material when installing polystyrene wall panel. The blanking shall be uniform and continuous; After the wallboard is installed in place，Shegord AvilaProfessional cold storage installation， pull rivets at the lap joint of the internal and external steel plates of the two wallboards for connection and fixation， the eccentric hook shall be loosened once before installation to ensure reliable locking during installation.
According to the technical requirements for the installation of cooling fan， when selecting the lifting point position， the position with good air circulation shall be considered first. Secondly， the direction of library structure is considered.
Drainage measures shall be provided for the villa room and overhead layer of the road surface of the cold storage engineering building.
Professional is kingIn order to prevent damage to the cold storage， it is necessary to lay some foam on the floor of the cold storage tank.
The combined cold storage door starts frequently or does not start for a long time， or does not stop for a long time， or stops before the storage temperature reaches.
The foaming technology of polyurethane with strong stability makes it have superior bonding performance. The firm combination of polyurethane rigid foam and carrier layer is the basic premise to ensure the stability of external insulation layer. That is， under the unfavorable local temperature and humidity conditions， it can bear various internal and external combined loads such as wind force self weight and normal collision， so as to avoid the problem of purchase errors. In the process of handling and the insulation layer still does not separate and fall off from the carrier layer and remains stable in the state.
The products stored in the medical cold storage project must be managed by color code， it is also necessary to strictly follow the instructions.
Test conclusionCompression refrigerator is commonly used， which is mainly composed of compressor， condenser， throttle valve and evaporation pipe. According to the way of evaporation pipe device， it can be divided into direct cooling and indirect cooling. Direct cooling the evaporation pipe is installed in the refrigerated warehouse. When the liquid coolant passes through the evaporation pipe， it will directly absorb the heat in the warehouse and cool down.
However not all controlled atmosphere reservoirs can choose to adjust with a large depth， which still needs to be determined according to the actual needs of fans and places. We can adjust the energy-saving effect of the control fan from the production design link， so that the energy-saving effect of the hot air fan will be significantly improved.
During the cold storage commissioning， special personnel shall be assigned to ensure that the surface of the cold storage plate shall reflect evenly without condensation and cold running; Sealing conditions of joints and holes; Whether the warehouse door and delivery port are not tightly sealed， and timely deal with the problems of insulation and seal failure such as degumming and air leakage.
Shegord AvilaIf there is more air or refrigerant oil in the evaporator， the heat transfer effect will be reduced: once more refrigerant oil is attached to the inner surface of the evaporator heat transfer tube， the heat transfer coefficient will be reduced. Similarly， if there is more air in the heat transfer tube， the heat exchange area of the evaporator will be reduced， the heat transfer efficiency will be significantly reduced， and the decline rate of warehouse temperature will be slowed down.
The refrigerant charge is insufficient. At this time， just add enough refrigerant.
The evaporator surface is too thick or too much dust， and the heat transfer effect decreases: another important reason is that the heat transfer efficiency of evaporator is low， which is mainly caused by excessive frost or excessive dust on the evaporator surface.