Answer:
a) The heat input per cycle is 2857.143 joules.
b) The temperature of the low-temperature reservoir is 49.655 °C.
Explanation:
a) The efficiency of the Carnot engine is defined by the following formula:
(1)
Where:
- Low temperature reservoir, in Kelvin.
- High temperature reservoir, in Kelvin.
- Heat output, in joules.
- Heat input, in joules.
- Engine efficiency, no unit.
If we know that and , the heat input of the Carnot engine is:
The heat input per cycle is 2857.143 joules.
b) If we know that and , then the temperature of the low-temperature reservoir:
The temperature of the low-temperature reservoir is 49.655 °C.