Calculated according to the electricity meter;
When the electricity meter is not installed separately, it can be estimated according to the following formula:
Power consumption=1.73 * average voltage * average power factor * startup hours/1000 (kW· h)
To simplify the calculation, the power consumption of the compressor can be calculated using the following formula: compressor power consumption=compressor allocation total * power allocation coefficient (kW· h). Refrigeration equipment compressor allocation total=compressor average power consumption * startup small (A· h). Power allocation coefficient=total compressor power consumption/total allocation total of each compressor (kW/A).
Cold storage refrigeration equipment must consume electricity to produce cooling capacity, and electricity is the main part of the cost of cold storage. brownout. Reducing production costs and improving economic efficiency are of great significance for improving economic management and enhancing the management level of refrigeration enterprises.
Unit product power consumption refers to the distribution of refrigeration electricity and cold storage fan electricity among various frozen and refrigerated products The electricity consumption of refrigeration equipment includes compressors and other electricity consumption (such as ammonia pumps, water pumps, etc.). The power consumption of the freezing room fan is borne by the frozen products, and the power consumption of the cooling room fan is borne by the cooling products. The power consumption of elegant and vulgar households is calculated based on the unit cooling capacity, and other electricity consumption can also be allocated according to the ratio of cooling room power consumption.
The calculation of the operating time of refrigeration equipment is to maintain or downgrade the room temperature to a certain temperature, and the time that the refrigeration equipment must operate is called the operating time. The time used for calculation is 24 hours, and the equipment capacity is calibrated in Btu per hour (Btu is the unit name of energy: 1 British thermal unit=1 Btu=0.252 kcal=1054.85 joules). Therefore, multiplying 24 hours by Btu/h gives the general capacity of the refrigeration equipment. (However, most devices basically do not need to run for 24 hours, and defrosting also requires some time and energy, but relatively less, so the total load within 24 hours needs to be divided by the required running time.) The following formula can be used to quickly determine the capacity of refrigeration equipment: Required equipment capacity: Btu/h=total cooling load in 24 hours/required running time
2. When installing a separate electricity meter for the compressor, calculate the power consumption according to the electricity meter; When a separate electricity meter is not installed, the following formula can be used to estimate: power consumption=1.73 * average voltage * average power factor * operating hours/1000 (kW· h). To simplify the calculation, the compressor power consumption can be calculated using the following formula: compressor power consumption=compressor distribution total * power distribution coefficient (kW· h). Refrigeration equipment compressor distribution total=compressor average power consumption * operating hours (A· h). Power distribution coefficient=total compressor power consumption/total distribution total of each compressor (kW/A).
How to calculate the power consumption of refrigeration equipment in cold storage
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