Q1/ In a test on a two stroke, heavy oil, marine engine, the following observations were made:- oil consumption 4.05 kg/hr, calorific value of oil 43M¡/kg, net brake load 579 N, mean brake diameter 1 m, mean effective pressure 275 kN/m2, cylinder diameter 0.20 m, stroke 0.250 m, speed 360 r.p.m: calculate (a) the mechanical efficiency (b) the indicated thermal efficiency (c) the brake thermal efficiency and (d) the quantity of jacket water required if 30% of the energy supplied by the fuel is absorbed by this water. Permissible rise in temperature is 20 k and specific heat capacity of water is 4.1868 kJ/kg.K.
Q1/ In a test on a two stroke, heavy oil, marine engine, the following observations were made:- oil consumption 4.05 kg/hr, calorific value of oil 43M¡/kg, net brake load 579 N, mean brake diameter 1 m, mean effective pressure 275 kN/m2, cylinder diameter 0.20 m, stroke 0.250 m, speed 360 r.p.m: calculate (a) the mechanical efficiency (b) the indicated thermal efficiency (c) the brake thermal efficiency and (d) the quantity of jacket water required if 30% of the energy supplied by the fuel is absorbed by this water. Permissible rise in temperature is 20 k and specific heat capacity of water is 4.1868 kJ/kg.K.
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
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![01/ In a test on a two stroke, heavy oil, marine engine, the following observations were made:- oil consumption
4.05 kg/hr, calorific value of oil 43M¡/kg, net brake load 579 N, mean brake diameter 1 m, mean effective pressure
275 kN/m2, cylinder diameter 0.20 m, stroke 0.250 m, speed 360 r.p.m: calculate (a) the mechanical efficiency
(b) the indicated thermal efficiency (c) the brake thermal efficiency and (d) the quantity of jacket water required
if 30% of the energy supplied by the fuel is absorbed by this water. Permissible rise in temperature is 20 k and
specific heat capacity of water is 4.1868 kJ/kg.K.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fb86f5143-35d7-403e-850c-ca6e02e657bb%2F415eea2b-904b-4260-85b6-e445114a27cc%2Fowvneaj_processed.jpeg&w=3840&q=75)
Transcribed Image Text:01/ In a test on a two stroke, heavy oil, marine engine, the following observations were made:- oil consumption
4.05 kg/hr, calorific value of oil 43M¡/kg, net brake load 579 N, mean brake diameter 1 m, mean effective pressure
275 kN/m2, cylinder diameter 0.20 m, stroke 0.250 m, speed 360 r.p.m: calculate (a) the mechanical efficiency
(b) the indicated thermal efficiency (c) the brake thermal efficiency and (d) the quantity of jacket water required
if 30% of the energy supplied by the fuel is absorbed by this water. Permissible rise in temperature is 20 k and
specific heat capacity of water is 4.1868 kJ/kg.K.
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