Air air regulating cold storage
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河北龙筑贸易有限公司 Hebei Dragon Construction Trading Co.,ltd Tel: 0086-15230827668 Skype: hank.zhao3 E-Mail:[email protected] Http:// www.asteelbuilding.com Air Air-regulating Cold Storage Air-conditioned cold storage can increase the adjustment of gas composition based on refrigerated storage, make the fruit and vegetable be in nearly dormant state, reduce water loss and plant disease and delay their metabolism process by controlling the temperature,humidity,carbon dioxide, oxygen concentration, ethylene concentration and other conditions in the storage environment, and restraining the respiration and self-consumption of fruit and vegetable; thus to maintain the texture, color and luster,,taste and nutrition of long-term preserved products unchanged basically, and achieve the purposes of better maintaining the freshness of fruit and vegetable and extending their storage period. Currently, it is one of the most popular and advanced preservation and fresh keeping technologies with the best effect. It is also the most advanced existed fruit and vegetable preservation and fresh-keeping method. Usually, air-conditioned storage can extend 2 to 3 times of storage period more than that of ordinary cold storage technology. Principle For Air-conditioned Cold Storage The traditional fruit and vegetable preservation and fresh-keeping methods include simple preservation and ventilated storage need simple equipment and small investment; however, the storage effect is bad, and the storage period is short, and the rot damage is serious. Radiation and chemical preservation are suitable for some fruits, but there exists radiation and chemical residue pollution and they are not suitable for all fruits and vegetables. Air-conditioned storage can create an optimal fruit and vegetable storage environment under suitable low temperature through changing the gas composition and relative humidity in the storage environment; its effect can be presented in following aspects: the low oxygen concentration(generally, the O2 concentration is 1% to 5%), and appropriate CO2 concentration created in air-conditioned cold storage can effectively restrain the respiration, reduce fruit and vegetable nutriment loss, restrain pathogenic bacteria breeding, and control the occurrence of certain physiological diseases; eliminate ethylene in environmental gas in the storage to restrain its acceleration of maturation effect on fruit and vegetable, and delay after-repening and aging process;increase the relative humidity of environmental gas to reduce the transpiration of fruit and vegetable to achieve the purpose of long-term preservation and fresh-keeping of fruit and vegetable.
Transcript of Air air regulating cold storage
河北龙筑贸易有限公司Hebei Dragon Construction Trading Co.,ltd
Tel: 0086-15230827668 Skype: hank.zhao3E-Mail:[email protected] Http:// www.asteelbuilding.com
Air Air-regulating Cold StorageAir-conditioned cold storage can increase the adjustment of gas composition based onrefrigerated storage, make the fruit and vegetable be in nearly dormant state, reduce water lossand plant disease and delay their metabolism process by controlling thetemperature,humidity,carbon dioxide, oxygen concentration, ethylene concentration and otherconditions in the storage environment, and restraining the respiration and self-consumption offruit and vegetable; thus to maintain the texture, color and luster,,taste and nutrition oflong-term preserved products unchanged basically, and achieve the purposes of bettermaintaining the freshness of fruit and vegetable and extending their storage period. Currently, itis one of the most popular and advanced preservation and fresh keeping technologies with thebest effect. It is also the most advanced existed fruit and vegetable preservation andfresh-keeping method. Usually, air-conditioned storage can extend 2 to 3 times of storage periodmore than that of ordinary cold storage technology.
Principle For Air-conditioned Cold StorageThe traditional fruit and vegetable preservation and fresh-keeping methods include simplepreservation and ventilated storage need simple equipment and small investment; however, thestorage effect is bad, and the storage period is short, and the rot damage is serious. Radiationand chemical preservation are suitable for some fruits, but there exists radiation and chemicalresidue pollution and they are not suitable for all fruits and vegetables. Air-conditioned storagecan create an optimal fruit and vegetable storage environment under suitable low temperaturethrough changing the gas composition and relative humidity in the storage environment; itseffect can be presented in following aspects: the low oxygen concentration(generally, the O2concentration is 1% to 5%), and appropriate CO2 concentration created in air-conditioned coldstorage can effectively restrain the respiration, reduce fruit and vegetable nutriment loss, restrainpathogenic bacteria breeding, and control the occurrence of certain physiological diseases;eliminate ethylene in environmental gas in the storage to restrain its acceleration of maturationeffect on fruit and vegetable, and delay after-repening and aging process;increase the relativehumidity of environmental gas to reduce the transpiration of fruit and vegetable to achieve thepurpose of long-term preservation and fresh-keeping of fruit and vegetable.
河北龙筑贸易有限公司Hebei Dragon Construction Trading Co.,ltd
Tel: 0086-15230827668 Skype: hank.zhao3E-Mail:[email protected] Http:// www.asteelbuilding.com
Composition Of Air-conditioned Cold StorageComposition: air-conditioned cold storage is generally comprised of airtight storage,air-conditioned system, refrigerating system, humidiffcation system, pressure balance system,and temperature,humidity O2,CO2, as well as automatic gas detection and control system.
Effect Of Air-condition Cold StorageRestrain the respiration, reduce the consumption of organic matters, and maintain the excellentflavor and scent of fruit and vegetableRestrain evaporation of water, and maintain the freshness of fruit and vegetable.Restrain the pathogenic bacteria breeding, control the occurrence of certain physiologicaldiseases, and reduce the rotting rate of fruit and vegetable.Restrain certain after-ripening enzyme activity, restrain the occurrence of ethylene, delayafter-ripening and aging processing, maintain the hardness of fruits within a long term, and storethe fruit and vegetable with a relatively longer storage period.
Air-conditioned systemTo make the air-conditioned storage reach the required gas composition and maintain therelative stability, it is required to be equipped with air-conditioned system that is comprised ofequipment, pipes and valves apart from the airtight storage that meets with requirements. Thewhole air-conditioned system, including nitrogen generation system, carbon dioxide deprivationsystem, ethylene deprivation system, and automatic temperature, humidity and gas compositiondetection and control system.
Features Of Adopting Barrel Pump UnitsAfter adopting barrel pump units, the return air can become dry gas when working as workingmedium in compressor after the gas-liquid separation in the barrel, and this shall avoid thepossibility of set stroke operation of compressor.Adopt compelled fluorine pump feed liquid method(multiple hydraulic filling liquid), which canaccelerate the flow rate of liquid measure and working medium in the evaporator, improve the
河北龙筑贸易有限公司Hebei Dragon Construction Trading Co.,ltd
Tel: 0086-15230827668 Skype: hank.zhao3E-Mail:[email protected] Http:// www.asteelbuilding.com
cooling rate of evaporator, and thus improving the heat transfer effect of general equipment.The mutual heat transfer between gases(overheating gas and super-cooling liquid) within thebarrel has achieved win-win result and thus resolving the oil-return problem in the fluorinesystem effectively.Barrel pump unit possesses automatic and manual oil return devices; return of oil used by heatexchange in the system to the compressor can effectively resolve the oil return problem influorine system, and improve the reliability of system operation.
