Question

A diesel engine presents a compression ratio of 20. We need it to produce 490.5 kJ/kg of net work while rejecting 309.5 kJ/kg of heat. Find the cutoff ratio and the amount of heat we need to supply during combustion. (Sol: 1.727, 800 kJ/kg)

Name: a diesel engine presents a compression ratio of 20 we need it to produce 4905 kjkg of net work while rejecting 3095 kjkg of heat find the cutoff ratio and the amount of heat we need to suppl 17181
Uploaded: 2022-01-24T10:37:46-08:00
Duration: 1 min 14 s
Channel: Hast Aggarwal
Description: a diesel engine presents a compression ratio of 20 we need it to produce 4905 kjkg of net work while rejecting 3095 kjkg of heat find the cutoff ratio and the amount of heat we need to suppl 17181

          A diesel engine presents a compression ratio of 20. We need it to produce 490.5 kJ/kg of net work while rejecting 309.5 kJ/kg of heat. Find the cutoff ratio and the amount of heat we need to supply during combustion.
(Sol: 1.727, 800 kJ/kg)

a diesel engine presents a compression ratio of 20 we need it to produce 4905 kjkg of net work while rejecting 3095 kjkg of heat find the cutoff ratio and the amount of heat we need to suppl 17181

Added by Eugenia C.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Hast Aggarwal

01/24/2022

Step 1

5 kJ/kg - Heat rejected ($$Q_{out}$$) = 309.5 kJ/kg We need to find: 1. Cutoff ratio ($$\beta$$) 2. Heat supplied ($$Q_{in}$$) during combustion For a Diesel cycle, the net work is given by the difference between the heat supplied and the heat rejected: $$W_{net} Show more…

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A diesel engine presents a compression ratio of 20. We need it to produce 490.5 kJ/kg of net work while rejecting 309.5 kJ/kg of heat. Find the cutoff ratio and the amount of heat we need to supply during combustion. (Sol: 1.727, 800 kJ/kg)