Analysis of Engineering Cycles. Power, Refrigerating and Gas by R. W. Haywood

By R. W. Haywood

Greatly revised, up to date and elevated, the fourth version of this renowned textual content presents a rigorous analytical therapy of recent power conversion plant. extraordinary for either its theoretical and functional therapy of traditional and nuclear energy plant, and its reviews of refrigerating and gas-liquefaction plant. This fourth version now contains fabric on issues of accelerating trouble within the fields of power 'saving' and relief of environmental pollutants. This elevated assurance offers particularly with the next parts: CHP (cogeneration) plant, experiences of either fuel and coal burning plant designed to minimize poisonous emissions, and the learn of PWR plant within the nuclear undefined, which has been prolonged to hide conceptual designs geared toward higher inherent safeguard. With over 20 new sections plus new appendices and extra difficulties this article not just keeps its price but additionally complements its usefulness to the reader, overlaying components of present curiosity and value.

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Additional resources for Analysis of Engineering Cycles. Power, Refrigerating and Gas Liquefaction Plant

Sample text

It receives its principal justification from the simplicity of the resulting expression for the cycle efficiency, which is found to b e a function only of the compression ratio. v A s for the Joule cycle, the thermal efficiency of the O t t o cycle can best be evaluated by first calculating the t e m p e r a t u r e s at the various points round the cycle. 9) where r = the volumetric compression ratio and p = r ~ , the isentropic t e m p e r a t u r e ratio for the cycle. T h e thermal efficiency of the O t t o cycle is then given by Y v v ™ V-Q- ) ηο = i B - c u i T -T y 3 l v 2 < > 410 H e n c e , from eqns.

In a plant of low overall efficiency the excess enthalpy of the exhaust products is high, and so therefore is the exhaust t e m p e r a t u r e . In a reciprocating I C engine, the large a m o u n t of energy transferred as heat to the jacket cooling water represents a considerable proportion of the energy released in t h e chemical reaction. Typical values of the various quantities for the different types of plant at their design load are given below. (a) IC gas-turbine plant T h e simple gas-turbine plant operates very nearly adiabatically.

6 the effect of irreversibilities on plant performance was seen to b e very great. 9. Air-standard cycle for gas-turbine p l a n t — t h e J o u l e cycle F o r an I C gas-turbine plant, in which combustion takes place at approximately constant pressure and in which air intake and gas exhaust are normally at the same (usually atmospheric) pressure, the corresponding ideal air-standard cycle is clearly the constant-pressure Joule cycle operating with the same pressure ratio of compression r as the actual plant.

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