How to improve the efficiency of small cold storage, reduce energy consumption and reduce costs

1) Reasonably adjust the operating parameters of the refrigeration system to improve the efficiency of the equipment.

Prevent evaporation from being too low.

Prevent excessive condensation pressure.

Prevent the exhaust temperature from being too high.

Second, prevent impurities from entering the refrigeration system.

Third, remove the dirt and frost on the heat exchange equipment in time to improve the heat transfer efficiency of the heat exchange equipment.

Fourth, the correct selection and use of lubricating oil.

5) Keep the compressor in good condition.

6) Adopt night or low temperature period to start operation.

1. The cold storage door should be closed tightly and not run cold.

2, the warehouse lighting people go off the lights 3Minimize the number of inbound personnel and the time spent in the warehouse 4Minimize the number of personnel in the warehouse and the time in the warehouse 5, reasonable stacking, improve the utilization rate of the warehouse.

6.Correct use of adjacent warehouses 7, reasonable collocation and comprehensive management of storage varieties 8, ventilation operation 9, maintenance of heat insulation and moisture-proof layer.

10. The coordination of fresh-keeping and refrigeration technology is an important guarantee to reduce operating costs and improve enterprise efficiency.

Hello, the cost of cold storage is not in line with the physical reasons are as follows: cold storage location, cold storage location determines the land cost of cold storage, but also affects the cost of electricity in the later stage, and at the same time the north or south, the cost of building cold storage also has a certain impact. 2. The insulation material of the cold storage project is generally made of polyurethane cold storage insulation board, and the thickness is generally 100mm, 120mm and 150mm.

3. The cost per square meter of cold storage of different sizes is different, the larger the capacity of the cold storage, the higher the overall cost, and the lower the cost per unit of cubic meter. 4. The choice of cold storage refrigeration equipment, the choice of refrigeration equipment will have a great impact on the design cost of cold storage, and there is a certain difference between imported brands and domestic brands. 5. Different cold storage partitions will lead to different cold storage costs of the same volume, which is because the number of times the partition affects the cold storage refrigeration equipment and cold storage insulation board.

6. The use of cold storage is not the same, and the design scheme is not the same, and it needs to be designed according to the use, for example, if special industrial materials are stored, explosion-proof storage should be required, and if it is a pharmaceutical cold storage, the quiet code should meet the GSP certification standards. Congratulations.

Summary. 1.Improper design of cold storage, insufficient insulation thickness or unreasonable equipment configuration;

1.Improper design of cold storage, insufficient insulation thickness or unreasonable equipment configuration;

2.The evaporator defrosting is not timely, and the frost layer is too thick;

3.The cold storage door is not closed properly or the door is opened for too long during storage operations;

4.When the cold storage is installed, the insulation of the warehouse is not done, or it is damaged during use, and the warehouse leaks;

1.Selection of refrigeration units.

Different refrigeration unit schemes will lead to different energy consumption, and the choice of scheme is to choose a unit with higher energy efficiency, so as to reduce the power consumption of cold storage from the source.

2.Lighting system in the cold room.

On the basis of safety, science and reasonableness, from the perspective of energy saving, the cold storage lighting minimizes the energy consumption of the lighting in the warehouse, which not only reduces the power consumption of the lighting, but also needs to reduce the heat radiation of the lighting.

3.Warehouse insulation.

The thermal insulation of the warehouse will directly affect the starting frequency of the cold storage unit, the frequent start of the refrigeration unit will cause an increase in power consumption, and also reduce the service life of the cold storage refrigeration equipment, generally our freezer uses 200mm cold storage plate, and the cold storage uses 100-150mm cold storage board.

4.The air cooler is defrosted in time.

The thickness of the frost of the air cooler will affect the cooling efficiency of the fan Shenling, and timely defrosting or defrosting can reduce power consumption.

5.Regular oil draining, descaling and air venting ensure a good exchange effect.

According to the data, when there is a thick oil film in the evaporator coil, in order to maintain the set temperature requirements, the evaporation temperature will be reduced to accompany the flushing, and the power consumption will increase by more than 10%; When the fouling of the water pipe wall in the condenser reaches the level, the condensation temperature will rise compared with the original temperature, and the power consumption will increase; When the refrigeration system is mixed with non-condensable gases and its partial pressure value is reached, the power consumption will increase by about 18%.It can be seen that the refrigeration system of the cold storage is important for regular oil discharge, reed filial piety and descaling and air release.

6.Rational use of the temperature difference between day and night operation.

China has a vast territory, and the temperature difference between day and night in many areas is large. Generally, the temperature difference between day and night in oceanic climate areas is 6-10, and the temperature difference between day and night in continental climate areas can reach 10-15. The ambient temperature at night is low, and the night start-up time can be adjusted and extended according to the storage characteristics of the product, which is conducive to the energy saving of the cold storage due to the relatively low condensing temperature.

1. The cold storage enclosure structure: The cooling capacity of the cold storage through the enclosure structure is proportional to the unit heat flow rate of the cold storage enclosure structure. Therefore, more efforts should be made to reduce the unit heat flow index of the cold storage envelope structure of cold storage.

2. The moisture-proof and steam-proof insulation of the cold storage enclosure structure It is also necessary to take moisture-proof and steam-proof measures for the cold storage enclosure structure, otherwise the thermal insulation performance of the insulation material will be worse. This is also the reason why the thermal insulation performance of the cold storage body is good when it is first used, but the thermal insulation effect becomes worse after a period of use.

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3. The evaporation pressure and temperature of the cold storage The evaporation temperature corresponds to the evaporation pressure. Under the condition that the temperature of the cold storage warehouse is constant, the temperature difference (the difference between the evaporation temperature and the warehouse temperature) is reduced, the evaporation temperature can be increased accordingly, and the refrigeration capacity of the cold storage refrigerator will be improved, that is, the circulation efficiency is improved, and the electricity is saved accordingly.

4. Generally speaking, when the resistance of the frost layer on the surface of the evaporator to the air is not significant, and the flow of air through the evaporator has not been reduced, the impact of the frost layer is not serious, and there is no need to thaw; When the flow of air is significantly reduced, defrosting should be carried out. The greater the humidity of the air, the greater the temperature difference between the evaporator temperature and the cold storage, the easier it is to frost on the evaporator.

5. The storage temperature of cold storage and the utilization rate of cold storage warehouse are different for fruits and vegetables, and each fruit and vegetable also has a temperature range suitable for its storage. Under the condition of not affecting the quality of fruits and vegetables, a higher storage temperature should be used for energy-saving cold storage.

What are the ways to reduce the power consumption of cold storage? Reasons for high power consumption of cold storage: improper design of cold storage, insufficient insulation thickness or unreasonable equipment configuration; When the cold storage is installed, the insulation of the warehouse is not done, or it is damaged during use, and the warehouse leaks; The refrigeration system is faulty, or there is significant wear and tear, refrigerant leakage.

When building cold storage, choose insulation materials with good thermal insulation performance to reduce the unit heat flow of cold storage maintenance structure: traditional perlite, cinder, chaff shell and other materials have poor thermal insulation, and the current new thermal insulation materials commonly use polyurethane foam materials, polystyrene foam materials and extruded plastic boards, etc., and at the same time increase the density and thickness of insulation materials, and do a good job in sealing and waterproofing of the insulation library body. Choose refrigeration equipment with high energy efficiency ratio and reliable quality, and the design and configuration of cold storage should be reasonable to meet the actual use requirements of cold storage

The quality of refrigeration equipment has a great impact on energy consumption, and the traditional open unit consumes a lot of energy, so now more imported or joint venture semi-hermetic, fully enclosed and scroll refrigeration compressors with high energy efficiency ratio are selected. At the same time, it is necessary to consider the condensation mode, the heat dissipation capacity of the condenser, the area of the evaporator, the cooling capacity of the expansion valve, etc., so as to achieve the best circulation of refrigeration and avoid insufficient or mismatched cooling capacity. Choose a professional refrigeration company to install and debug to make the refrigeration equipment reach the best working condition:

The installation of refrigeration equipment, the layout of pipelines, pressure holding leak detection, vacuuming, the addition of refrigeration oil, the filling of refrigerant, the adjustment of expansion valves, and the setting of thermostats are reasonable, all of which directly affect the normal operation of refrigeration equipment, and refrigeration equipment can only achieve the best energy-saving effect when it runs in the best state. Reduce the temperature difference between the evaporation temperature of the refrigerant and the warehouse temperature of the refrigeration system: under the condition of a certain warehouse temperature, if the temperature difference is reduced, the evaporation temperature can be increased accordingly, and when the condensation temperature remains unchanged, the cooling capacity of the refrigerator will be increased, and the corresponding electricity will be saved (for every 1 degree increase in evaporation temperature, the electricity can be saved by 4%).

Not only that, the small temperature difference will also increase the relative humidity in the warehouse, reducing the dry consumption of refrigerated food.