GATE 2024 AR — Architecture – Question 65
A 2 TR window AC with EER 3.1 cools a 40 m³ room for 600 hours, compressor continuously running. Find electricity use in kWh, to nearest integer.
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Correct answer: 1350 to 1394
Explanation
Using 1 TR≈3.517 kW, cooling capacity is 7.034 kW. The stated metric EER is cooling watts/electrical watts, so input power is 7.034/3.1=2.26903 kW. Over 600 hours, energy is 1361.42 kWh, rounding to 1361. Room volume does not alter this supplied rated-capacity calculation.