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21 November, 07:13

Consider the coolant circuit in a standard automotive engine that produces a power output of 100 kw. the liquid coolant (which is usually a 50%-50% mixture of ethylene glycol and water) has a specific heat of 3.3 kj/kg-k. if the coolant inlet temperature is 70°c and heat transferred to the coolant at the maximum power operating condition is 28% of the power output, find the minimum mass flow rate of coolant required to keep the coolant exit temperature at or below 90°c.

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  1. 21 November, 10:53
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    The minimum mass flow rate of coolant required to keep the coolant exit temp at or below 90 degrees C is at a rate of 35%. To find this you need to take the temperature times the power output to find this answer.
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