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Cold storage is mainly used for constant temperature storage of food, dairy products, meat, aquatic products, poultry, fruits and vegetables, cold drinks, flowers, green plants, tea, medicines, chemical raw materials, electronic instruments and instruments, etc. Cold storage is actually a kind of cold storage equipment that combines low temperatures, cold storage (cold storage.
It is also a kind of refrigeration equipment, compared with the refrigerator, its refrigeration area is much larger, but they have the same refrigeration principle.
Generally, the cold storage is mostly cooled by the refrigeration machine, which uses the liquid (ammonia or freon) with a very low gasification temperature as the coolant, so that it can evaporate under the conditions of low pressure and mechanical control, absorb the heat in the storage, so as to achieve the purpose of cooling and cooling. The most commonly used is the compression refrigerator, which is mainly composed of compressors and condensers.
Throttle valve and evaporation pipe. According to the way of evaporation pipe device, it can be divided into two types: direct cooling and indirect cooling. Direct coolingThe evaporation tube is installed in the refrigerated warehouse, and when the liquid coolant passes through the evaporation tube, it directly absorbs the heat in the warehouse and cools down.
Indirect cooling is carried out by a blower.
The air in the warehouse is sucked into the air cooling device, and the air is absorbed by the evaporation pipe hovering in the cooling device, and then sent to the warehouse to cool down. The advantages of the air cooling method are that the cooling is rapid, the temperature in the warehouse is more uniform, and the carbon dioxide generated during the storage process can be removed.
and other harmful gases are taken out of the warehouse.
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Cold storage (coldstorage) is the abbreviation of cold storage, mainly for food, dairy products, meat, aquatic products, poultry, fruits and vegetables, cold drinks, flowers, green plants, tea, medicines, chemical raw materials, electronic instruments and instruments to play a constant temperature storage effect.
1. Long storage time: due to the use of artificial refrigeration technology, the storage time is extended by keeping a certain moisture content of the items stored inside.
2. Good preservation performance: it can inhibit the growth and reproduction of microorganisms and the activity of enzymes for a long time.
3. Easy to manage: high degree of automation and easy to operate and maintain.
4. Remarkable energy-saving effect: power consumption is reduced by 50% compared with the same volume of hot air circulation.
5. Easy and flexible to use: the relative humidity of the air can be adjusted and controlled according to the needs, and the evaporator or condenser can be placed in any space to control different temperature and humidity requirements.
6. Strong safety and reliability: the system runs reliably, stably and has a long life.
7. Less investment and quick results: less one-time investment but obvious benefits.
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The main function of cold storage is to maintain the quality of the substance, which is conducive to storage, and some industries do cold storage for better next production.
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Cold storage belongs to the food distribution industry. Cold storage is used for food, medicine, machinery frozen processing and refrigeration, it is artificial refrigeration, so that the room to maintain a certain low temperature.
The good insulation structure of the cold storage room can maximize the cold energy created by the cold storage unit in the cold storage and less leakage to the outside, on the other hand, it is to minimize the leakage of heat outside the cold storage to the cold storage, which is also the main difference between the cold storage and the general house.
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Cold storage belongs to the food distribution industry.
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Cold storage belongs to the equipment industry, which is mainly used for the storage and processing of medicine and food. Here are some types of cold storage:
Cold storage for agricultural products.
Catering and hotel cold storage.
Logistics, e-commerce distribution cold storage.
Food cold storage.
Pharmaceutical cold storage.
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Cold storage operators are low-temperature indoor operations, so long-term cold storage personnel, especially porters and other operators, are more susceptible to cold and illness.
Cold storage is generally below 10 degrees, the installation of different products can usually be divided into 10 to 0 degrees of fresh storage, 0 to -20 degrees of cold storage and -20 to -40 degrees of freezer, whether you are a cold storage porter or cold storage management personnel, long-term in the cold storage are all low-temperature indoor operations, long-term operation in the cold storage personnel are more susceptible to cold disease, generally not visible when young, but after the age of 40 will gradually appear in the cold storage after long-term work of various sequelae symptoms. Common phenomena such as decreased immunity, fever and cold, decreased physical function, rheumatoid arthritis, rheumatic heart disease, and nerve paralysis are common. Cold storage operators are low-temperature indoor operations, so long-term cold storage personnel, especially porters and other operators, are more susceptible to cold and illness.
Cold storage is generally below 10 degrees, the installation of different products can usually be divided into 10 to 0 degrees of fresh storage, 0 to -20 degrees of cold storage and -20 to -40 degrees of freezer, whether you are a cold storage porter or cold storage management personnel, long-term in the cold storage are all low-temperature indoor operations, long-term operation in the cold storage personnel are more susceptible to cold disease, generally not visible when young, but after the age of 40 will gradually appear in the cold storage after long-term work of various sequelae symptoms. Common phenomena such as decreased immunity, fever and cold, decreased physical function, rheumatoid arthritis, rheumatic heart disease, and nerve paralysis are common.
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Cold storage is a part of the cold chain logistics link, and the main purpose is the long-term storage and turnover of goods.
Cold storage is a storage building complex that uses artificial refrigeration to cool down and has the function of cold insulation, including refrigeration machine room, transformer and distribution room, etc. Cold storage refers to the use of artificial means to create an environment different from the outdoor temperature or humidity, and is also a constant temperature and humidity storage equipment for food, liquids, chemicals, medicines, vaccines, scientific experiments and other items. For example, the food is monitored for frozen processing and refrigeration, and artificial refrigeration is used to maintain a suitable temperature and humidity environment in the warehouse.
The walls and floors of the cold storage are made of thermal insulation materials with good thermal insulation performance, such as polyurethane, polystyrene foam (EPS), and extruded polystyrene foam (XPS), which are mainly used to reduce the loss of cooling capacity and slow the transfer of heat outside the warehouse.
Architectural structure features of cold storage:
1. The walls, floors and flat roofs of the cold storage are laid with a certain thickness of thermal insulation materials to reduce the heat transmitted from the outside world.
2. In order to reduce the absorption of solar radiant energy, the surface of the outer wall of the cold storage is generally painted white or light color.
3. The cold storage building should prevent the diffusion of water vapor and the penetration of air, so it is necessary to set up a moisture-proof and heat-proof insulation layer to make the cold storage building have good sealing and moisture-proof and vapor insulation performance.
4. The foundation of the cold storage is affected by low temperature, and the moisture in the soil is easy to be frozen, so in addition to the effective insulation layer, the floor of the low temperature cold storage must also be treated under the insulation layer to prevent the soil from freezing.
5. The structure of the cold storage should be strong and have a large bearing capacity, because the floor of the cold storage should be stacked with a large number of goods, and various loading and unloading transportation machinery and equipment should be passed, and there should be refrigeration equipment or pipelines on the flat roof.
6. The building materials of the cold storage and the structure of each part of the cold storage should have sufficient frost resistance.
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The cold storage is equipped with a standby refrigeration unit to ensure that when the commonly used unit stops working in case of failure, the operation of the standby unit will not affect the normal storage of drugs, vaccines and related products and equipment in the warehouse. The refrigeration equipment is made of high-quality materials, strictly inspected and manufactured, with less failure, low noise, energy saving and power saving, and reliable operation. The refrigeration control system adopts automatic microcomputer electrical control technology to automatically monitor, record and regulate the temperature and humidity of the storage area, and is equipped with a temperature and humidity recorder with high-precision sensors and a fault alarm device to ensure the normal storage of drugs, vaccines and related equipment in the warehouse.
Cold storage suitable for its business scale and variety should be built, and more than two independent cold storage should be equipped for vaccine operation. It is used for automatic monitoring, display, recording, regulation and alarm of cold storage temperature. Standby generator set or dual-circuit power supply system for cold storage refrigeration equipment.
For drugs with special low temperature requirements, facilities and equipment that meet their storage requirements should be equipped. In the construction of pharmaceutical cold storage, there are many problems that should be paid attention to, the requirements of pharmaceutical cold storage are more stringent than that of food cold storage, and the acceptance standards are also higher, special attention should be paid to in the construction, so as to better ensure the effectiveness of storing drugs.
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Pharmaceutical cold storage project is mainly stored in room temperature conditions, there is no way to store pharmaceutical products, only the pharmaceutical products are stored in a low temperature state, will not lead to the deterioration or failure of pharmaceutical products, but also can effectively extend the shelf life of pharmaceutical products, Kuhua refrigeration suggests, the temperature of pharmaceutical cold storage engineering should be set between minus five degrees and eight degrees.
The body of the pharmaceutical cold storage project will generally choose rigid polyurethane heat-insulating sandwich panels, such a sandwich panel is mainly infusion molding through high-pressure foaming process, so it can be designed into different specifications and different lengths to fully meet the needs of consumers. Double-sided color steel plate is mainly to choose the most advanced eccentric hook, such a connection method can make the library plate and the library plate of the pharmaceutical cold storage project become more tight, if the sealing line can be guaranteed, then in the later use process can also effectively reduce the appearance of air conditioning leakage, greatly increase the thermal insulation effect, the scientific design looks very simple and practical, and also has the effect of energy saving and environmental protection.
Pharmaceutical cold storage project, first of all, should meet the national health standards, medicine cold storage project inside and outside should choose stainless steel, color steel plate composed of splint library plate, because such a splint library plate has the characteristics of non-toxic and tasteless, will not rust, then in the process of use can reduce the heat transfer effect caused by the temperature difference between inside and outside, which can also lead to the best use efficiency of the pharmaceutical cold storage project.
Pharmaceutical cold storage engineering can be composite materials as insulation materials, such a composite wall has the characteristics of light weight, high strength, are in the process of use also has the effect of corrosion resistance, anti-aging, in the ultra-low temperature temperature, more able to show the superiority of such a material, Kuhua refrigeration suggests that you can choose such a material.
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Pharmaceutical cold storage projects, generally choose a fully enclosed refrigeration compressor, because such a refrigeration compressor, in the process of use, not only the noise is very small, but also the energy consumption is relatively low. The internal fan used in the pharmaceutical cold storage project can also completely remove the moisture contained in the library body in the refrigeration process, so that the dryness of the pharmaceutical cold storage project can be fully guaranteed, and there is no need for special personnel to monitor the whole process, which can effectively extend the storage time of pharmaceutical products and reduce the failure of pharmaceutical products. Most of the pharmaceutical cold storage projects will be equipped with automatic monitoring, and there will also be automatic alarm equipment, we can know the temperature changes in the pharmaceutical cold storage project anytime and anywhere, which will have a certain effect on the storage and shelf life of pharmaceutical products.
Let pharmaceutical products reduce the occurrence of spoilage. <>
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Compared with ordinary cold storage, the construction requirements of pharmaceutical cold storage are higher, after all, it is related to life safety. The main features of pharmaceutical cold storage:
1.The refrigeration and cooling equipment is used and prepared, that is, two groups of refrigeration and cooling equipment are configured, and one group of refrigeration and cooling equipment cannot be cooled normally, so as to ensure that the temperature of the cold storage will not rise and ensure the safety of the drugs in the warehouse.
2.Temperature and humidity need to be strictly controlled, usually the temperature of the medicine library is required to be 2 8, and the humidity is required to be 35%RH 75%RH, so in addition to the refrigeration and cooling equipment, additional dehumidification equipment needs to be configured to maintain the humidity requirements in the warehouse;
3.The power supply needs to be configured with standby power supply, that is, the mains power + standby power supply two-way power supply, to prevent the mains power outage, there is standby power to ensure the continuous operation of the cold storage equipment, generally some pharmaceutical industrial parks will have their own dual-way power supply, such as there is no dual-way power supply, need to be equipped with a generator to act as a backup power supply.
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There is no good or bad cold storage, and the type of cold storage needed is selected according to the demand.
According to the refrigeration temperature, it can be divided into: fresh-keeping cold storage, cold storage, low-temperature cold storage, ultra-low temperature cold storage and quick-freezing cold storage. These different refrigeration temperatures can better preserve items with different characteristics, such as fresh cold storage is generally used for fresh food, such as fruits and vegetables, meat and eggs, dairy products, etc., and the temperature is controlled at 0-5.
The refrigeration temperature of the cryogenic cold storage is between minus 25 and minus 18, and some foods that need to be frozen can be used in the cryogenic cold storage. The temperature of the quick-frozen cold storage is lower, about -30 below, and many quick-frozen foods, quick-frozen vegetables and fruits and other foods that need to be frozen quickly can be used in the quick-freezing freezer.
Methods of cold storage maintenance:
1. Wipe off the stains on the inner and outer surfaces of the warehouse with a soft cloth dipped in neutral detergent.
2. Use a clean and moistened cloth to remove the residual detergent on the library board.
3. Wipe the library board with a soft dry cloth. Be careful not to use abrasive and corrosive cleaners, and do not use alcohol to wipe embossed aluminum plates, etc.
4. Frequently check the sealing edge of the cold storage door, do a good job of cleaning and maintenance, and prevent the deformation of the rubber edge from causing cold leakage.
5. If it is found that there is a tension lock sealing plug inside the cold storage, it should be replenished in time to prevent the water seal from entering the insulation layer.
Some places have agricultural machinery subsidies, and the subsidy fee depends on each place, but it is not easy to apply.
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