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Consider a 24-kW hooded electric open burner in an area
Chapter 2, Problem 56P(choose chapter or problem)
Problem 56P
Consider a 24-kW hooded electric open burner in an area where the unit costs of electricity and natural gas are $0.10/kWh and $1.20/therm (1 therm = 105,500 kJ), respectively. The efficiency of open burners can be taken to be 73 percent for electric burners and 38 percent for gas burners. Determine the rate of energy consumption and the unit cost of utilized energy for both electric and gas burners.
Questions & Answers
QUESTION:
Problem 56P
Consider a 24-kW hooded electric open burner in an area where the unit costs of electricity and natural gas are $0.10/kWh and $1.20/therm (1 therm = 105,500 kJ), respectively. The efficiency of open burners can be taken to be 73 percent for electric burners and 38 percent for gas burners. Determine the rate of energy consumption and the unit cost of utilized energy for both electric and gas burners.
ANSWER:
Step by step solution Step 1 of 2In this problem we need to determine the rate of energy consumption, and the unit cost ofutilized energy, for electric and gas heaters.To calculate the rate of energy consumption We need to multiply the energy supplied to theheater (Q=24 kW) with the efficiency of the heater.The given electric heater efficiency is ,Natural gas burning heater efficiency is,Rate of energy consumption of electric heater,Rate of energy consumption of natural gas heater,