Download Combined heat and power design guide by Ashrae PDF

By Ashrae

"Current, authoritative advisor on imposing mixed warmth and tool (CHP) structures that offer electrical energy and beneficial thermal strength in one, built-in process. Covers on hand applied sciences, web site evaluation, process layout, set up, operation, and upkeep, with special case experiences and a word list. In twin devices, Inch-Pound (I-P) and foreign process (SI)"--

summary: "Current, authoritative consultant on imposing mixed warmth and tool (CHP) structures that offer electrical energy and beneficial thermal strength in one, built-in approach. Covers to be had applied sciences, web site overview, procedure layout, install, operation, and upkeep, with designated case experiences and a word list. In twin devices, Inch-Pound (I-P) and foreign method (SI)"

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Reciprocating engines require shutdowns for maintenance and service, which in this example amounts to 10% of the year. indb 35 4/20/2015 4:32:13 PM COMBINED HEAT AND POWER DESIGN GUIDE It is most useful to understand both the electric and thermal load factors independently when applying CHP configurations to a particular application. In addition, because the CHP system may address several different thermal loads in the facility, an understanding of the individual thermal load factors will allow for easy sizing of the system to get optimum performance.

Though other mitigating circumstances may influence CHP system size and configuration, it is necessary to recognize the importance of properly understanding the peak, average and base loads of a facility when reviewing an application and/or sizing a CHP system. Whereas peak loads generally exceed the CHP system capacity with little consequence to the design of a CHP system, the base load more often than not determines the CHP system design. In addition, whatever the size and configuration of the selected CHP system, the economic and environmental performance of the system will be directly subject to the addressable load profiles.

10 MW Gas Turbine CHP: 28% electric efficiency, 68% total overall efficiency, 15 ppm NOx emissions 2. Capacity factors and capital costs for PV and wind based on utility systems in DOE’s Advanced Energy Outlook 2011 3. Capital cost and efficiency for natural gas combined-cycle (NGCC) system based on Advanced Energy Outlook 2011 540 MW combinedcycle power plant 4. Combined cycle system proportioned to 10 MW of output, NGCC 48% electric efficiency, NOx emissions 9 ppm 5. 1 lb per million Btu NOx emissions • Reduces Grid Congestion: Industrial sites and urban centers are often capacity constrained.

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