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Heat Engine Worksheet - Solved Lab | PHYS 0002A, Assignments of Physics

Sierra CollegePhysics

Material Type: Assignment; Class: General Physics; Subject: Physics; University: Sierra College; Term: Unknown 1989;

Typology: Assignments

Pre 2010

Uploaded on 07/30/2009

koofers-user-bja
koofers-user-bja 🇺🇸

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Physics 2A
Name_________________
Heat Engine Worksheet
A heat engine goes through the cycle shown below. From the given values, verify the
calculated value of T3, T4, Win, Qin, Wout, Qout, Wcycle, and e for 1 mole of an ideal gas. Turn
this problem in at the beginning of the next lecture.
Heat Engines
PV diagram of Internal Combustion Engine Cycle
ViVf
Pi
Pf
adiabatic
adiabatic
Qin
Qout
Wout
Win
Otto Cycle (1876)
T1=60oC
T2=449oC
T3=2170oC
T4=854oC
Heat Engines
Internal Combustion Engine Cycle Continued
Calculated Values
T3=2170oC; T4=854oC
Win=-3.58x106J
Qin= 15.87x106J
Wout=12.13x106J
Qout= 7.32x106J
Wcycle=8.55x106J
Given Information
P1=1atm; T1=60oC
P2=15atm; T2=449oC
=Cp/Cv=1.4 (ideal gas)
V2=V3; V1=V4
Pi (Vi

= Pf (Vf
TP(
constant
TV(constant
e=Wcycle/Qin= 8.55x106J/15.87x106J=0.54

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Physics 2A Name_________________ Heat Engine Worksheet A heat engine goes through the cycle shown below. From the given values, verify the calculated value of T 3 , T 4 , Win, Qin, Wout, Qout, Wcycle, and e for 1 mole of an ideal gas. Turn this problem in at the beginning of the next lecture.

Heat Engines

PV diagram of Internal Combustion Engine Cycle Vi Vf Pi Pf adiabatic adiabatic Qin Qout Wout Win Otto Cycle (1876) T 1 =60oC T 2 =449oC T 3 =2170oC T 4 =854oC

Heat Engines

Internal Combustion Engine Cycle Continued Calculated Values T 3 =2170oC; T 4 =854oC Win=-3.58x10^6 J Qin= 15.87x10^6 J Wout=12.13x10^6 J Qout= 7.32x10^6 J Wcycle=8.55x10^6 J Given Information P 1 =1atm; T 1 =60oC P 2 =15atm; T 2 =449oC =Cp/Cv=1.4 (ideal gas) V 2 =V 3 ; V 1 =V 4

Pi (Vi= Pf (Vf

TP(constant

TV(constant

e=Wcycle/Qin= 8.55x10^6 J/15.87x10^6 J=0.