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Cool storage technology is currently a popular energy-saving technology in building air conditioning systems. According to different media, it can be divided into water storage and ice storage. Cold storage tank is the key equipment in water cold storage technology, which will directly affect the effect of cold storage. The calculation method of the capacity of the cold storage tank can be calculated according to five methods, the actual cooling load calculation, the cooling load of the terminal refrigeration equipment, the water flow of the cold storage tank, the design points of the water cold storage system, the cooling load of the chiller, etc. The specific calculation method of the capacity of the cold storage tank:
One: Calculated according to the actual cooling load
According to the load calculation table of the Design Institute, the total load (4566kw) is obtained by adding up the building heat transfer, equipment, personnel and lighting. Each room is the actual cooling load. If the normal operation factor is not considered, the total cooling load is calculated according to the actual cooling load of 4566kw. According to the three formulas mentioned above, the effective volume of a single cold storage tank is 27.3 m3.
Two: Calculate according to the cooling load of the terminal refrigeration equipment of the cold storage tank
47 sets of precision air-conditioning equipment totaling 4750kw, 32 sets of fan coil units totaling 134.95kw, and the total cooling capacity of 15 sets of fresh air units totaling 530kw, totaling 5414.95kw. Substituting into the above formula, the effective volume of a single cold storage tank is 32.3m³
Three: According to the water flow of the cold storage tank, the cold storage tank continues to operate for 15 minutes, and the total cold storage capacity and the cold storage capacity of a single cold storage tank can be obtained.
Four: According to the design characteristics of the water storage tank, it is usually marked very clearly in the manual.
Five: Calculate according to the cooling load of the chiller
One: Calculated according to the actual cooling load
According to the load calculation table of the Design Institute, the total load (4566kw) is obtained by adding up the building heat transfer, equipment, personnel and lighting. Each room is the actual cooling load. If the normal operation factor is not considered, the total cooling load is calculated according to the actual cooling load of 4566kw. According to the three formulas mentioned above, the effective volume of a single cold storage tank is 27.3 m3.
Two: Calculate according to the cooling load of the terminal refrigeration equipment of the cold storage tank
47 sets of precision air-conditioning equipment totaling 4750kw, 32 sets of fan coil units totaling 134.95kw, and the total cooling capacity of 15 sets of fresh air units totaling 530kw, totaling 5414.95kw. Substituting into the above formula, the effective volume of a single cold storage tank is 32.3m³
Three: According to the water flow of the cold storage tank, the cold storage tank continues to operate for 15 minutes, and the total cold storage capacity and the cold storage capacity of a single cold storage tank can be obtained.
Four: According to the design characteristics of the water storage tank, it is usually marked very clearly in the manual.
Five: Calculate according to the cooling load of the chiller