Thermal efficiency and compression ratio, Mechanical Engineering

Assignment Help:

Thermal efficiency and compression ratio:

Calculate thermal efficiency and compression ratio for automobile working on otto cycle. If energy generated per cycle is thrice which of rejected during the exhaust. Consider fluid as an ideal gas with = 1.4       

Sol.: Since we have

Where

Wotto = (Q1  - Q2)/Q1

Q1 = Heat supplied

Q2 = Heat rejected

Given that     Q1 = 3Q2

otto = (3Q2  - Q2)/3Q2  = 2/3 = 66.6%                                                   ...(i)

We also have;

Qotto = 1 - 1/(r)  - 1

0.667 = 1/(r)1.4 - 1

r = (3)1/0.4  = 15.59

 


Related Discussions:- Thermal efficiency and compression ratio

Evaluate the crippling load, A cast iron hollow column, having 100mm extern...

A cast iron hollow column, having 100mm external diameter and 80mm internal diameter is used as a column of 2.4 m length. Using Rankine formula, calculate the crippling load, when

Monte Calro for aerodynamic load simulation.., I have experimental results ...

I have experimental results for a 2D model and a matlab script that computes the aerodynamic loads on that 2D model.When we compare experiment with the theory I have noted that the

., what is fluid?

what is fluid?

State - thermodynamics, STATE - Thermodynamics: The State of system is...

STATE - Thermodynamics: The State of system is its condition or configuration described in detail. State is the condition of the system which is identified by thermodynamic

Application of cold service insulation, Q. Application of cold service insu...

Q. Application of cold service insulation? Cold insulation shall be installed specifically in accordance with the Manufacturer's recommendations, and generally as outlined belo

Motorcycle servicing , In motorcycle servicing we studied about various ser...

In motorcycle servicing we studied about various service tips for motorcycle servicing. These steps will ensure proper servicing of motorcycle and as a result customers will trust

Impeller design, The function of the impellers is to: (i) reduce bubble siz...

The function of the impellers is to: (i) reduce bubble size thereby increasing the surface area for oxygen transfer, and (ii) maintain a uniform environment, nutrient supply and he

Centre of gravity and moment of inertia, Centre of Gravity and Moment of In...

Centre of Gravity and Moment of Inertia: -  For a uniform plate of mass M, the overall mass may be divided into individual masses M i for which centre of gravity is known as

Define non - consumable electrode, Q. Define Non - consumable electrode? ...

Q. Define Non - consumable electrode? These types of electrodes are prepared from high melting point materials. Mainly carbon, pure tungsten and its alloy are used for electrod

Shock absorbers, how bike''s hydraulic shock absorbers work?

how bike''s hydraulic shock absorbers work?

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd