The following details were noted in a test on a single-cylinder four-stroke oil engine: bore = 150 mm; stroke = 160 mm; speed of engine = 500 rpm; fuel consumption = 0.0475 kg/min; calorific value of fuel = 42,000 kJ/kg; the %3D %3D difference in tension on either side of the brake pulley = 400 N; brake circumference = 2.2 m; length of the indicator diagram = 50 mm; area of positive loop of indicator diagram 475 mm2; area of negative loop = 25 mm2; spring constant = 0.8333 bar per mm. Assume a combustion efficiency 100 %. Determine the Brake Specific Fuel kg %3D Consumption, bkW-hr
The following details were noted in a test on a single-cylinder four-stroke oil engine: bore = 150 mm; stroke = 160 mm; speed of engine = 500 rpm; fuel consumption = 0.0475 kg/min; calorific value of fuel = 42,000 kJ/kg; the %3D %3D difference in tension on either side of the brake pulley = 400 N; brake circumference = 2.2 m; length of the indicator diagram = 50 mm; area of positive loop of indicator diagram 475 mm2; area of negative loop = 25 mm2; spring constant = 0.8333 bar per mm. Assume a combustion efficiency 100 %. Determine the Brake Specific Fuel kg %3D Consumption, bkW-hr
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
Related questions
Question
100%
Transcribed Image Text:For a Helium gas turbine efficiency of 87
%, compressor efficiency of 82 %, initial
temperature of 500 K, and Turbine inlet
temperature of 2500 K, and k = 1.659
for Helium gas, find the value of the
optimum pressure ratio for maximum
cycle efficiency.
The following details were noted in a
test on a single-cylinder four-stroke oil
engine: bore = 150 mm; stroke = 160
mm; speed of engine = 500 rpm; fuel
consumption = 0.0475 kg/min; calorific
value of fuel = 42,000 kJ/kg; the
difference in tension on either side of
the brake pulley = 400 N; brake
circumference = 2.2 m; length of the
indicator diagram = 50 mm; area of
positive loop of indicator diagram = 475
mm2; area of negative loop 25 mm23;
spring constant = 0.8333 bar per mm.
Assume a combustion efficiency = 100
%. Determine the Brake Specific Fuel
Consumption,
= 15
opt
= 16
opt
(r,) = 17
%3D
opt
= 18
kg
opt
bkW-hr
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