AEE Energy Management CEM Question # 20 Topic 3 Discussion

To calculate the cost of heating water using natural gas:

Step 1: Compute Energy Required to Heat the Water

Given:

Mass of water= 500 L = 500 kg

Temperature rise (ΔT)= 50°C - 18°C = 32°C

Specific heat of water (Cp)= 4.2 kJ/kg-°C

Energy Required (Q)=m×Cp×ΔT

=500×4.2×32

=67,200 kJ=67.2 MJ

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