A Comparative Study On The Application Of Temperature Control Technology In The Top Of Large Warehouses

Temperature is an important factor affecting grain stability.Existing research shows that reducing or maintaining the temperature of grain can control the food respiration intensity and reduce dry matter loss during storage.To delay the quality of the quality and keep the food freshness;It is an economical,green and ecological science storage technology to inhibit the growth and development of insects and reduce or avoid the use of chemical agents.Current,temperature control of grain storage technology research and application development is rapid,this topic was carried out on the antibacterial activity stored grain and conventional storage temperature control technology adopted warehouse top temperature storage of comparative study,through the comparative analysis and conventional storage temperature control stored grain insecticidal effect,temperature and moisture,color,smell,fatty acid value,taste evaluation value,eating quality,commodity value,etc.,and under the condition of different storage temperature control technology of food after the operation cost and outbound economic benefits,in order to in good storage technology using effect and good economic benefit,to seek a balance of food storage purpose is to provide more safety,economy and adapt to the region storage technology.The main conclusions of this experiment are as follows:1.The temperature control effect of three temperature control measures is significantWhen using air-conditioning temperature control technology,the average temperature of the external temperature in the summer is about 27°C,the temperature of the warehouse and surface temperature of the air-conditioning warehouse are not affected by the outside world.Compared with the No.15 warehouse,the No.28 experimental warehouse has a low warehouse temperature of about 6°C.The surface grain temperature is about 6.1°C lower;the average grain temperature is about 2°C lower.The experimental data shows that the effect of temperature-controlled storage on the temperature of the warehouse and the temperature of the surface layer is obvious.and the No.8 warehouse using the ceiling technology in the warehouse The average grain temperature of No.10 barn houses insulated by the top of the warehouse magnesia plate is lower by 2°C and 3°C than that of No.7 control bins respectively.The average bin temperature warehouse No.8 is 4°C lower than No.7 bin,and No.10 warehouse is No.7 warehouse.Low 5°C;surface grain temperature No.8 warehouse is 3.4°C lower than No.7 warehouse,No.10 warehouse is 5°C lower than No.7 warehouse,warehouse ceiling and roof top Magnesium plate insulation measures are auxiliary to conventional storage measures to basically guarantee wheat The degree of safety in summer.2,under the influence of temperature control measures,lower grain temperature can effectively inhibit the growth and reproduction of pestsIn the course of 2016 experiments,the 28-storage summer temperature application of air-conditioning temperature control technology was basically no insect-free food,and it reached the requirement of no fumigation;the No.15 warehouse was a general insect grain and was fumigated.The No.8 and No.7 warehouses of the ceiling technology in the warehouse belong to the common insect grain,and all of them were fumigated.The No.10 warehouse with the overhead magnesium in the top of the warehouse has basically reached the requirement of the quasi-low temperature storage and it belongs to the basic no-growth food.,fumigation free.3,under the effect of temperature control measures,the granary can reach or close to the quasi-low temperature storage can effectively maintain the quality of foodBoth the No.15 and No.28 warehouses had little change in the magazine of the weight of corn during the storage period.The unimproved grain increase volume of the No.15 warehouse was quite obvious relative to the No.28 warehouse.The imperfect grain of the No.15 warehouse increased by97.5%.Mold grain increased by 81.8%,and the unimproved grain and mold grain of No.28 warehouse remained basically unchanged.The moisture in the two positions did not change much.The increase in the storage quality index fatty acid value of the 15 th position from 31.2mg/KOH/100 g to 64mg/KOH/100 g showed a significant increase,which was a 105% increase compared to the just put in storage,and the increase of 28 th position from 34mg/KOH/100 g.To 51mg/KOH/100 g,a slight increase,the value increased by 50%;15th warehouse tasting score decreased from the original 80 points to 65 points,a decrease of 18.7%,28 th warehouse tasting score basically unchanged.The quality of the two wheat experimental warehouses did not differ significantly from that of the control warehouses,mainly due to the stability of the wheat storage.The temperature contrast storage effect of corn is the most obvious.4.After applying temperature control measures,good economic benefits can be achievedIn terms of project cost,the cost of the overhead heat insulation in the warehouse,the ceiling in the warehouse,and the air-conditioning temperature control project is 175,450 yuan,7,140 yuan,and 30,400 yuan respectively.The depreciation expense for the three projects during grain storage is 2,1789.9 yuan respectively.The project cost of 12723.48 yuan and 10232.64 yuan,and tons of grain temperature control were 4.06 yuan/ton,2.36 yuan/ton,and 1.86 yuan/ton respectively.From the perspective of the final income,although the cost of implementing temperature control projects has increased,the physical and manpower has been saved in the custody process.In the end,the temperature-controlled foods are better than those without temperature control in terms of color or smell,especially surface odor.Barn room.On the tonnage grain profit,the No.8 warehouse in the warehouse ceiling and No.10 warehouse with the overhead magnesium-plate board overhead insulation were 8.05 yuan and 11.61 yuan more than the warehouse in the control warehouse No.7.Air conditioning temperature control of the 28 th warehouse is 98.24 yuan more than the 15 th control warehouse.To sum up,in China's fourth ecological grain storage area,air-conditioning and temperature-controlled storage of grain,the best results,can achieve the purpose of temperature control,water conservation,delay quality changes,while bringing more sales profits,green security,efficiency Good,can solve the problem of corn storage security in summer.The storage of ceilings and silo-top magnesium-magnesium plates assists in conventional storage measures and basically guarantees the safety of food.