Introduction of fruit and vegetable cold storage

　　Cold storage, generally refers to in a variety of refrigeration equipment, facilities can be artificially controlled and stable at low temperature. It is the basic component of: cooling system; Electric control device; Have certain heat insulation performance of warehouse; Subjunctive buildings, etc. Refrigeration system mainly include all kinds of refrigeration equipment, refrigeration equipment is the heart of the cold storage, it produce cold quantity, ensure the supply of cold source in the warehouse. Electronic control unit is the brain of a refrigerator, it command refrigeration system to guarantee supply of cold energy.

　　Has certain heat insulation performance of the warehouse, is a place of storage of fresh agricultural products, its purpose is to maintain the stability of low temperature environment, the insulation performance as usually. Warehouse good heat insulation structure, can maximum limit to keep the cold refrigeration equipment manufacturing in the rolls (less, on the other hand, is leaking as far as possible to reduce the heat to the house of the rolls in a library, it is also cold storage with ordinary housing the main differences.

　　Fresh-keeping cold storage is used for cold storage used for fruits and vegetables.

　　The basic principle of cold storage for fruits and vegetables

　　Fresh-keeping cold storage water is used in solid phase change latent heat release or absorb a large number of the characteristics of cold storage for fruits and vegetables in water as the substrate in the winter ice form, using the large amount of latent heat released when its freezing at the same time, maintain the rolls fruits and vegetables are not affected by cold; Again in the summer the ice as the cold source, low temperature, high humidity conditions necessary to maintain the fruit and vegetable storage.

　　The main technical points of fresh-keeping cold storage

　　Characteristics (1) (1) no refrigeration equipment, with only a few fan, small investment, less maintenance and management costs, with the ordinary use of chlorine or ammonia refrigeration mechanical refrigeration Leon library than the saving electricity was above 90%, and no pollution. (2) of the rolls of cold source from the ice water, stable at low temperature, high humidity, fresh keeping good quality, long freshness. (3) a high degree of automation, easy to manage. (4) is appropriate in 13 ~ C, annual average temperature is lower than the lowest temperature in winter in 8 ° C below the database construction, the temperature, the lower the better the results.

　　(2) performance index (1) without any mechanical refrigeration equipment, use of natural cold source, outside the library summer temperatures as high as more than 40 ° C, winter temperatures dipped - outside the library, about 18 ° C temperature inside have always been able to maintain in 2-3 ° C in low temperature condition. (2) the annual average temperature of 13 ° C - 2 - region can be built into this without the use of mechanical refrigeration storehouse of preservation of natural cold source. (3) can keep the temperature inside anniversary in the low temperature of the need for fruits and vegetables, can be in 1-10 ° C temperature automatic adjustment. (4) of the rolls always can keep the relative humidity above 90%, it is almost impossible for ordinary mechanical refrigerator.

　　(3) the scale in the form of (1) storehouse capacity: 100-5000 tons. (2) storage varieties: apple, pear, peach, grape, cauliflower, green peppers and other fruits and vegetables. (3) building area: 150-10000 square metre, according to the storage capacity calculation of 1 square meters, construction area of stores 0.7 10 tons of fruit and vegetables. Architectural form (4) : because of fresh to use natural cold source, so according to the site conditions, our library in cave where the climate is cold or have available can greatly save database construction spending. (5) management: because there is no complex refrigeration equipment, can automatically adjust the temperature and storage library just 2-100-5000 tons of fruit and vegetable of eight managers.

　　(4) the applicable scope is suitable for our country north of cold area of storage for fruits and vegetables, cold regions, such as in Inner Mongolia and heilongjiang, such as fish, meat and the library can also be used to store the animal food.