How to design a Cold Storage
1. In designing a Cold room some requirements have been taken care according to the storing material . example for fruits and vegetables
co2 in some cases
ethylene in some cases.
2. Once the basic conditions are selected than comes size of the cold room ,that has been calculated on the quantity of material stored in the cold room .
a)single commodity cold store
b)Multi commodity cold store
c) weight of the material stored ie
Multi commodity cold store give option to store the various commodity as per profit and quantity .
3)Structure and Insulation
After selecting the size type of insulation is being selected with the best insulation properties .generally designer and users compromises on the quality of insulation due to prices and this could lead to more power consumption and more running cost and reduces profit. Now a days PUF is being used in insulation which have good insulation property
4)Heat Load estimation
This is the most important aspect in designing a cold storage ,this tell us what capacity of refrigeration machines is required in the cold storage.This also give overview of our power consumption our power load as well as the running cost for the plant.their are many factors on which heat load of cold room calculated.
size of the cold storage
Insulation material type and thickness of insulation
door opening of the cold storage
Fresh air infilteration
product in temperature
product storage temperature
Pull down time
On the basis of above calculations the heat load can be calculated .
5)Selection o Cold Room Equipments
On the basis of heat load Equipments has been selected that can be ammonia based or freon based .that can be aircooled or water cooled. compressor can be semihermatic ,scroll,screw or hermatic .
system can be based on chiller water system or direct expansion .
Who will not required best valued product in reasonable prices.After designing technical parameters Negotiate for the best valued product .
When We install the cold storage we help our nation by saving food commodity of nation and this gives you profits also .Many counties like India are giving huge subsidy in cold storarge also
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