Question

A Carnot engine performs work at the rate of 440 kW while using 680 kcal of heat per second. If the temperature of the heat source is 570°C, at what temperature is the waste heat exhausted?

Name: a carnot engine performs work at the rate of 440 kw while using 680 kcal of heat per second if the temperature of the heat source is 570c at what temperature is the waste heat exhausted 99953
Uploaded: 2022-12-09T18:13:09-08:00
Duration: 1 min 53 s
Channel: Narayan Hari
Description: a carnot engine performs work at the rate of 440 kw while using 680 kcal of heat per second if the temperature of the heat source is 570c at what temperature is the waste heat exhausted 99953

          A Carnot engine performs work at the rate of 440 kW while using 680 kcal of heat per second. If the temperature of the heat source is 570°C, at what temperature is the waste heat exhausted?

Added by Rick J.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Narayan Hari

12/09/2022

Step 1

We'll use SI units (Joules and Kelvin). * Work done (W) = 440 kW = 440,000 J/s * Heat input ($Q_H$) = 680 kcal/s. Since 1 kcal = 4184 J, $Q_H$ = 680 kcal/s * 4184 J/kcal = 2844320 J/s * Temperature of heat source ($T_H$) = 570°C = 570 + 273.15 K = 843.15 K Show more…

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A Carnot engine performs work at the rate of 440 kW while using 680 kcal of heat per second. If the temperature of the heat source is 570°C, at what temperature is the waste heat exhausted?