To calculate the number of units consumed by a 1.5-ton window air conditioner, you need to know the power rating of the AC and the duration for which it runs.
The power rating of an electrical appliance is usually given in Watts (W). To convert the power rating from Watts to kilowatts (kW), you divide the Watts by 1000.
For example, if the power rating of the 1.5-ton window AC is 1500 Watts, then:
Power rating in kW = 1500 Watts / 1000 = 1.5 kW
Now, to calculate the number of units consumed, you need to multiply the power rating in kW by the number of hours the AC runs. The formula for calculating energy consumption (in units) is:
Energy (in kWh) = Power (in kW) × Time (in hours)
For example, if the 1.5-ton window AC runs for 8 hours a day:
Energy consumption = 1.5 kW × 8 hours = 12 kWh
The energy consumption of the 1.5-ton window AC in this scenario is 12 units (kWh) per day. Keep in mind that the actual energy consumption may vary depending on the AC's efficiency, the temperature setting, and other factors.