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Download Combined Heating, Cooling & Power Handbook Technologies & by Neil Petchers PDF

By Neil Petchers

A how-to consultant for utilizing strength and environmental potency as a way to be cost-efficient and ecocnomic, this booklet contains pictures of apparatus from a variety of brands, cutaway drawings, structure schematics, functionality curves, info tables, functionality checks in keeping with brands' info, and contributions from a number of self sufficient engineering assets. it's divided into 4 major elements: thought and know-how; working atmosphere; purposes; and research and implementation. the writer develops an built-in method of strength and cost-efficiency undertaking improvement, matching strength creation and heating/cooling necessities to supply sturdy monetary returns.

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In summary, the preceding generalizations should be applied with caution. They are by no means hard and fast rules and are subject to debate within the energy industry. While many of these generalizations may often prove true, there are many variables involved in the prime mover selection process. A site-specific investigation of all available options is required to determine the best strategy for meeting facility energy requirements. This involves consideration of prevailing fuel and electricity purchase options, environmental regulations, and the characteristics of alternative systems with respect to power and thermal load profiles.

In small capacities, both capital cost and thermal efficiency tend to favor reciprocating engines. As equipment capacities increase, these differences tend to decrease. Gas turbines are available in capacities of up to several 100,000 hp (kW), while the largest reciprocating engines are about 75,000 hp (56 MW). Stationary applications featuring reciprocating engines of capacities greater than 30,000 hp (22 MW) are not common, though multiple smaller capacity engines may also be applied in large capacity applications.

In the steam power cycle on the left side of the figure, roughly 57% of fuel energy input is lost in condenser heat rejection. The right side of the figure illustrates heat generation for a process steam load, such as paper drying, steam distillation, or absorption chilling. In this application, a fired boiler generates steam at a pressure of about 150 psig (11 bar), which is delivered to the process and returned to the boiler as liquid condensate at about 200°F (93°C). Condensate, containing about 167 Btu/lbm (388 kJ/kg), is heated, evaporated, and superheated by the boiler, adding roughly 1,080 Btu of energy to each pound (2,511 kJ to each kg) of condensate.

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