Cold storage project solution

Food processing plants, slaughterhouses, food raw materials production is the main application of large cold storage products group, is an important link in the process of food processing, in relation to food nutrition, composition, appearance, color, taste and other factors, how to ensure that all aspects of food processing index, is the most difficult process the design of cold storage. Sheng Li refrigeration using refrigeration system science, cold air energy isolation, meet the handling requirements of the production process, and cooperate with production line. Make food production more simple, fast, scientific, safe.
First, location:
Mainly from two aspects to consider:
1 production conditions: (1) supply of raw materials (2) geographical and environmental conditions
2 investment and economic effects: (1) to have a certain power supply, water supply, steam and natural gas conditions
(2) transport conditions
Two, the entire food processing center production process planning:
1 food processing technology design
2 overall process control and planning
Three, according to the food production process planning and design of cold storage plan
1 general layout: should be divided into living area, office area and production area, storage area, logistics channel.
2 building layout should be reasonable to meet the process requirements, in line with regional planning process, to prevent cross contamination from the building should generally be equal to two higher than the height of the building in the building.
3 workshop layout: should be from birth to maturity, from raw materials to finished products will be separated or divided into sequential process single package (tank) workshop requirements of health protection measures strictly, air flow from the plot zone to the polluted area and the business flow (from raw materials to finished products) instead, workshop set at least two do export goods diversion.
4 "three wastes" Governance: the enterprise "three wastes" should meet the emission standards set by the environmental protection department.
5 road: pavement application of hard material paving.
6 GREEN: green area of the plant should account for 1/4 of the total area of 1/3, small businesses can take advantage of the ground green.
Four, according to the cold storage floor plan to choose the appropriate refrigeration system, insulation structure, ground treatment, etc.
1 Determination of insulation structure
2 floor, ground treatment
3 Determination of refrigeration system
(1) determination of refrigerant: the current domestic hot refrigerant mainly ammonia, freon, carbon dioxide, three. Ammonia and carbon dioxide are two kinds of natural refrigerants, the impact on the environment is small, but also the most popular of the two refrigerants. Ammonia due to its toxic and flammable and explosive, so in the main city of our country such as Beijing, Shanghai and other places, has great limitations on the application of ammonia refrigeration system of ammonia, usually large cold storage in a city far away from the crowd to the construction area, and is a major hazard source. Carbon dioxide as a refrigerant, because in the domestic development of late, it has not been widely used, and because of the physical characteristics, the existence of high pressure in the refrigeration cycle, the construction of the project is a great test. Is a kind of freon refrigerant refrigerant, because most freon refrigerant has refrigeration stable performance, high safety, is widely used in refrigeration industry, but because of some damage to the ozone layer freon refrigerant, and will produce the greenhouse effect, the United Nations Environmental Protection Agency banned or restricted use, but some transitional freon refrigerant freon refrigerant and environmental protection still has certain service life. Customers should take into account the types of refrigerants used in the construction area and scale.
(2) determine the refrigeration unit installed capacity and unit form: according to the factors of cold storage volume and temperature, through internal calculations to determine the cold division refrigeration cooling capacity of the cold chain logistics center in each temperature zone, the general large-scale cold chain logistics center large parallel unit, a small refrigerator using a small parallel unit or single computer system, using separate refrigeration system processing workshop.
(3) determination of the cooling form: the more commonly used cooling forms are: air-cooled, water-cooled, evaporative cooling of the three. From the view of energy saving, the application of evaporative cooling in the refrigeration system, due to the addition of latent heat. In terms of the refrigeration system, the single or small parallel units usually adopt air cooling or water cooling. At the same time, the environmental factors is a key to decide the form of cooling, in northern China, the winter outdoor temperature is low, considering the safety of system operation and convenient management factors, generally used in cooling mode.
(4) for liquid form: liquid supply refrigeration system with direct expansion type liquid supply, pump barrels of forced liquid, such as liquid and a variety of differential pressure type gravity liquid supply for the form, is commonly used at present is the direct expansion for the liquid and barrel pump forced liquid two, usually small Freon system cooling system will adopt the direct expansion refrigeration system, large ammonia Freon or the system will use the bucket pump forced fluid supply system. 4 control system and electrical control system and electrical systems need to meet user requirements and alarm, a simple alarm type and remote monitoring system and other forms of cold storage temperature, humidity, gas composition, on-site or remote monitoring and control of refrigeration system and operation process of the pressure, temperature, operation state etc.. At the same time should pay attention to the needs of different food storage and monitoring requirements of different goods (such as drug storage should be based on GWP, GSP data records of the drug, and the corresponding unit standby).
(5) in the design process of the cold storage, we should also pay attention to the cooperation of the cold storage and the fire, ventilation, water and electricity system, so as to ensure the safety, scientific and environmental protection.
Five, construction management
1 construction preparation work
You familiar with the construction drawings, and review of self-examination drawings, and one-time disclosure; Construction -- budget, project cost control; it according to the drawings of the construction site clean-up, temporary warehouse; after the temporary housing construction personnel, according to the site conditions to coordinate and solve; construction technology and construction organization -- the person in charge, be familiar with the drawings, with master design intent; only by Party A civil, hydropower, cold storage and other construction units will work to implement the cross connection process; it according to the construction drawings and construction schedule to determine the establishment of the party, material planning, semi-finished products processing and application list etc..
2 equipment installation
After the equipment installation personnel must be familiar with the drawings and specifications. There before the installation of equipment, professional construction personnel to prepare lifting plan site, equipment entering the scheme -- inspection equipment, equipment installation need to check out of the box, and the formation of acceptance records, completed by the construction units and construction units together;
After the foundation of acceptance, acceptance of equipment foundation and cold storage base, determined to meet the following construction requirements. This site equipment management, equipment approach to do on-site management, until the delivery of equipment. After the equipment installation, equipment installation for good fastening, shockproof, correction work, ensure the safe operation of the system.
Six, completes the completion of acceptance and other handover work
After the construction of cold storage refrigeration, cold Division will first internal inspection, and ensure customer acceptance through a one-time. After the acceptance of qualified personnel on site training.
Seven, regular maintenance