Finding the Exhaust Temperature of a Carnot Engine

Thread starter minszue
Start date Aug 28, 2010
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Carnot Carnot engine Engine

AI Thread Summary

To find the exhaust temperature of a Carnot engine, the given parameters include a work output of 360 kW and a heat input of 720 kcal per second, with the heat source temperature at 650°C. The relevant formula for the Carnot efficiency is W = Qh * [1 - Tc/Th]. There is a concern regarding the conversion of 720 kcal/s to kW, as improper conversion could lead to incorrect results. The discussion emphasizes the importance of accurate unit conversion in thermodynamic calculations. Ensuring correct calculations is crucial for determining the waste heat temperature accurately.

Aug 28, 2010

minszue

Homework Statement

A Carnot engine performs work at the rate of 360 kW while using 720 kcal of heat per second.If the temperature of the heat source is 650 C, at what temperature is the waste heat exhausted?

Homework Equations

because Th,Qh,and W are given so i going to use this formula
W=Qh*[1-Tc/Th)

The Attempt at a Solution

the answer is too large and that is incorrect.

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Aug 28, 2010

rock.freak667

Homework Helper

Did you convert 720 kcal/s to kW properly?

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