jibjabsalar4160 jibjabsalar4160
  • 20-08-2019
  • Engineering
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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?

Respuesta :

aristeus aristeus
  • 22-08-2019

Answer

31.66%

Explanation:

Output of the stem engine=9.5 KW

Steam engine receives heat at the rate of 1800 KJ/min so [tex]Q_in=1800KJ/min[/tex] we know that 1 minute = 60 sec so [tex]Q_in=1800KJ/min=\frac{1800}{60}=30KJ/sec[/tex]

Now efficiency [tex]\eta =\frac{output}{Q_{in}}=\frac{9.5}{30}=0.3166[/tex]

So efficiency = 0.3166×100=31.66%

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