PROBLEM 1. A closed system of constant volume experiences a temperature rise of25°C when a certain paddle work is introduced. The heat transferred in the process is30 KJ. The specific heat at constant volume for the pure substance comprising thesystem is 1.2kg KKJand the system contains 2.5 kg of this substance. Determine:a. the change in internal energyb. work doneC. paddle workPROBLEM 2. Air enters a compressor at 10 Pa and 25°C having a volume of 1.8kgand is compressed to 5 x 10 Pa isothermally. Determine: a) work done b) change ininternal energy c) heat transferred.

Given:m=2.5 kgCv=1.2 kJ/kg.K∆T=25o CQ=30 kJ

PROBLEM 1. A closed system of constant volume experiences a temperature ri 25°C when a certain paddle work is introduced. The heat transferred in the proce 30 KJ. The specific heat at constant volume for the pure substance comprising ti system is 1.2 KJ and the system contains 2.5 kg of this substance. Determine: kg K

PROBLEM 1. A closed system of constant volume experiences a temperature ri 25°C when a certain paddle work is introduced. The heat transferred in the proce 30 KJ. The specific heat at constant volume for the pure substance comprising ti system is 1.2 KJ and the system contains 2.5 kg of this substance. Determine: kg K

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter8: Natural Convection

Section: Chapter Questions

Problem 8.46P

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