An Investigation to Reduce Electricity Bills using Inverter AC in Pakistan

Ameen Khan; Aftab Ahmed Khuhro; Ateeque Ahmed Memon; Ans Ahmed Memon

doi:10.33317/ssurj.466

Authors

Ameen Khan ISRA University, Department of Mechanical Engineering, Hyderabad, Pakistan
Aftab Ahmed Khuhro
Ateeque Ahmed Memon
Ans Ahmed Memon

DOI:

https://doi.org/10.33317/ssurj.466

Keywords:

Thermal comfort, Conventional air conditioner (CAC), Inverter air conditioner (Inverter AC), Cooling load, National Electric Power Regulatory Authority (NEPRA), Payback period (PBP)

Abstract

The cost affiliated with energy consumption of a conventional air conditioner is so high, an average salaried person cannot afford it. 5.8 m x 4.5 m x 3.6 m room is used for the energy assessment, in which the Inverter/VRF and Conventional air conditioning systems are used separately to attain a set temperature of 25^OC for the weather in Hyderabad, Pakistan. Through the simulated results, May has the highest energy use, with 467 kWh for conventional air conditioning and 310 kWh for inverter air conditioning. When compared to conventional air conditioners, inverter or VRF air conditioners can save up to 50% on energy. In Pakistan, according to NEPRA pricing, inverter air conditioners can have a payback time of 5 to 11 months for various brands of air conditioners, and they can reduce an ordinary consumer's annual electricity cost by up to 48 percent.

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