A power plant produces 590 MW of electricity with 39% efficiency by burning natural gas with...

 

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A power plant produces 590 MW of electricity with 39% efficiency by burning natural gas with an energy content of 51,000 kJ/kg. Transmission lines convey this energy with 93% efficiency to a home, where a microwave oven consuming 1.2 kW of electricity is 47% efficient at converting electrical energy to heat in the food. a. How many joules of heat are produced in the power plant for each joule of heat given to the food? b. When the microwave is on, at what rate (in g/s) is natural gas being burned to supply it? (Think carefully about which energy losses are relevant here and which are not.) A power plant produces 590 MW of electricity with 39% efficiency by burning natural gas with an energy content of 51,000 kJ/kg. Transmission lines convey this energy with 93% efficiency to a home, where a microwave oven consuming 1.2 kW of electricity is 47% efficient at converting electrical energy to heat in the food. a. How many joules of heat are produced in the power plant for each joule of heat given to the food? b. When the microwave is on, at what rate (in g/s) is natural gas being burned to supply it? (Think carefully about which energy losses are relevant here and which are not.)

Answer rating: 100% (QA)

Lets break down the calculations step by step for both parts a Heat produced in the power plant for each joule of heat given to the food Step 1 Calcul... View the full answer