water at 10°c enters into a geyser. The water drawn out from the geyser has a temperature of 60°c and the rate of outflow of water is 18 kg/hr.The rating of geyser is:
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Answer:
1.05 KW
Explanation:
The rating can be found out by calculating the total power usage
We know that, Q = mc (t2-t1)
where Q = power, m= mass , t1= initial temperature & t2 = final temperature,
c= specific heat of water = 4.2 kJ/Kg
Given, m = 18 kg/hr= 18/(60 x 60) = 0.005 kg/s
t1 = 10 °c, t2 = 60° c
Therefore, Q = 0.005 x 4.2 x (60 - 10 )
=0.005 x 4.2 x 50 = 1.05 KW
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