Want to know how to calculate the power consumption of electrical appliances? 1. For example, a refrigerator: the power consumption (kWh / 24h) is 0.49. What is the daily power consumption? How to calculate it? 2. A 2.5-hp cabinet air conditioner: the energy efficiency ratio is 3.39, the input power (W) is 2130, and the cooling capacity is 7350 (W). What is the hourly power consumption of this air conditioner? What are the following figures of the energy efficiency ratio, the input power and the cooling capacity?

Want to know how to calculate the power consumption of electrical appliances? 1. For example, a refrigerator: the power consumption (kWh / 24h) is 0.49. What is the daily power consumption? How to calculate it? 2. A 2.5-hp cabinet air conditioner: the energy efficiency ratio is 3.39, the input power (W) is 2130, and the cooling capacity is 7350 (W). What is the hourly power consumption of this air conditioner? What are the following figures of the energy efficiency ratio, the input power and the cooling capacity?

A1
The marked power consumption of refrigerator is the data measured by the factory in the laboratory, which is of little significance to the common people. In practical application, it is generally calculated according to the power of the compressor. The power consumption of refrigerator is also related to the amount of physical storage, the ambient temperature and the number of door opening. Generally, it is about 0.1 degree every day
A2
The energy efficiency ratio reflects the energy saving effect of the air conditioner. The calculation of the energy efficiency ratio is based on the output power and the input power. For example, your air conditioner 7350 / 2130 = 3.45, the energy efficiency ratio should be 3.45, not 3.39. The higher the ratio, the more energy saving. The number "watt" indicates the size of the air conditioner, and the watt is used as the unit. The energy efficiency ratio is a coefficient, and there is no unit

How to calculate the power consumption of 100W electrical appliances per hour?

Because: 1 kW * 1 hour = 1 kwh
So: 100 watts (0.1 kW) * 1 hour = 0.1 kwh