1. A Carnot cycle has a maximum temperature of 550 °F and minimum temperature of 100 °F. If the horsepower output of the engine is 44.13, find the heat added for the cycle in BTU/s.

Elements Of Electromagnetics
7th Edition
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Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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1. A Carnot cycle has a maximum temperature of 550 °F and minimum temperature of 100 °F. If the horsepower output of the engine is 44.13, find the heat added for the cycle in BTU/s.
Use these values when necessary:
Specific Heat Ratio (k)
O2 - 1.395
Co2 = 1.288
Cpwater = 4.187 kJ/kg
H2 - 1.4
He = 1.667
NH3 = 1.304
N2 = 1.399
Hg = 1.666
CH: = 1.321
K; Cpair = 1 kJ/kg
- K; Cpatean = 2 kJ/kg - K
1 kg - 2.205 lb
"C to K = (use + 273.15)
1 bar = 100 kPa
1 BTU = 1.055 kJ = 778 ft - lb
1 HP = 0. 746 kW = 2545 BTU/hr
= 6.5748 kJ/kg - K
@ 1.03425 MPa:
@ 2.5 MPa :
@ 7MPA and 550 deg C:
= 2779. 4 kJ/kg; Sg
hg = 2803.1 kJ/kg; Sg = 6.2575 kJ/ kg
h: = 3530.9 kJ/kg; s: = 6.9486 kJ/kg
- K
- K
Transcribed Image Text:Use these values when necessary: Specific Heat Ratio (k) O2 - 1.395 Co2 = 1.288 Cpwater = 4.187 kJ/kg H2 - 1.4 He = 1.667 NH3 = 1.304 N2 = 1.399 Hg = 1.666 CH: = 1.321 K; Cpair = 1 kJ/kg - K; Cpatean = 2 kJ/kg - K 1 kg - 2.205 lb "C to K = (use + 273.15) 1 bar = 100 kPa 1 BTU = 1.055 kJ = 778 ft - lb 1 HP = 0. 746 kW = 2545 BTU/hr = 6.5748 kJ/kg - K @ 1.03425 MPa: @ 2.5 MPa : @ 7MPA and 550 deg C: = 2779. 4 kJ/kg; Sg hg = 2803.1 kJ/kg; Sg = 6.2575 kJ/ kg h: = 3530.9 kJ/kg; s: = 6.9486 kJ/kg - K - K
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