Download Combined heating, cooling & power handbook : technologies & by Neil Petchers PDF

By Neil Petchers

A how-to advisor for utilizing strength and environmental potency as a method to be comparatively cheap and ecocnomic, this publication contains photos of apparatus from quite a lot of brands, cutaway drawings, structure schematics, functionality curves, info tables, functionality exams in accordance with brands' facts, and contributions from numerous autonomous engineering assets. it really is divided into 4 major elements: thought and know-how; working setting; purposes; and research and implementation. the writer develops an built-in method of strength and cost-efficiency undertaking improvement, matching energy construction and heating/cooling specifications to supply stable monetary returns.

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Equation 2-9 thus becomes: ( ) Net work + Recovered heat x 100% th = (2-15) Heat added Since mechanical or electrical power is usually more valuable than heat energy, combined product values are not highly informative and can result in misleading conclusions about the relative thermodynamic and economic value of a cogeneration cycle. epsand net heat rate are often the terms net thermal efficiency more revealing. eps placed energy is commonly referred as an energy credit or fuel credit. The amount of energy displaced by recovered heat is a function of the efficiency of the displaced boiler (or other energy conversion equipment).

82 In this case, the CCP will not be computed as a function of ECP or FCP because the cost of fuel input to the gas turbine and the cost of fuel that is being displaced by use of recovered heat are different. Therefore, the fuel credit must be calculated separately and then applied to the CCP expression. 038/kWh Beyond ECP, FCP, and CCP Absent from the above discussion of performance indicators are several essential factors that affect actual project economic performance for any prime mover application.

2-17) Heat added – Heat recovered Net work output Energy-chargeable-to-power (Eq. 2-19) Total heat added – Displaced fuel energy Net power output ( ) BtuEnergy added /h – BtuHeat recovered /h hp BtuHeat added – BtuHeat recovered x 20 ) kJEnergy added /h – kJHeat recovered /h kWm Boiler hp-hOutput – hp-hAuxilliary input Table 2-1 English and SI Units Commonly Used in Performance Terms. 82 In this case, the CCP will not be computed as a function of ECP or FCP because the cost of fuel input to the gas turbine and the cost of fuel that is being displaced by use of recovered heat are different.

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