Question

A steam engine receives heat at a rate of 1800 kJ/min and produces an output of 9.5 kW. Determine the thermal efficiency of the engine?

Answer 1

31.66%

Step-by-step explanation:

Output of the stem engine=9.5 KW

Steam engine receives heat at the rate of 1800 KJ/min so
`Q_in=1800KJ/min` we know that 1 minute = 60 sec so
`Q_in=1800KJ/min=(1800)/(60)=30KJ/sec`

Now efficiency

So efficiency = 0.3166×100=31.66%