A coal-fired plant generates $600 \mathrm { MW }$ of electric power. The plant uses $4.8 \times 10 ^ { 6 } \mathrm {~kg}$ of coal each day, and the heat of combustion of coal is $3.3 \times 10 ^ { 7 } \mathrm {~J} / \mathrm { kg }$. The steam that drives the turbines is at a temperature of $300 ^ { \circ } \mathrm { C }$, and the exhaust water is at $37 ^ { \circ } \mathrm { C }$.
(a) What is the overall efficiency of the plant for generating electric power?
(b) How much thermal energy is exhausted each day?
(c) Using the same heat reservoirs, what is the maximum possible efficiency for a heat engine?

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The Answer of A coal-fired plant generates $600 \mathrm { MW }$ of electric power. The plant uses $4.8 \times 10 ^ { 6 } \mathrm {~kg}$ of coal each day, and the heat of combustion of coal is $3.3 \times 10 ^ { 7 } \mathrm {~J} / \mathrm { kg }$. The steam that drives the turbines is at a temperature of $300 ^ { \circ } \mathrm { C }$, and the exhaust water is at $37 ^ { \circ } \mathrm { C }$.
(a) What is the overall efficiency of the plant for generating electric power?
(b) How much thermal energy is exhausted each day?
(c) Using the same heat reservoirs, what is the maximum possible efficiency for a heat engine?

A Coal-Fired Plant Generates 600MW600 \mathrm { MW }600MW Of Electric Power

A Coal-Fired Plant Generates $600 \mathrm { MW }$ Of Electric Power