Abstract: This paper describes a second generation Cooling, Heating, and Power (CHP) for Buildings system. CHP systems have the potential to
achieve thermal efficiencies twice that of conventional remote power plants by utilizing waste heat and eliminating losses due to transmission and
distribution. However, system integration issues need to be dealt with before these objectives can be realized. The CHP System being evaluated consists
of a microturbine generator that provides on-site electrical power, using natural gas as fuel, for a medium-sized commercial office building. The
waste heat of the microturbine is used in a single-effect absorption chiller, which provides cooling, and a solid wheel desiccant system, which provides
dehumidification. Technical issues related to modifications of the original CHP system are described and improvements to the original system design
and performance are evaluated including a reduction in the number of components, a reduction of parasitic power consumption, and improvements in
controls for the heat recovery process. Overall system performance as well as individual component performance is compared between the first generation
CHP system and the current system. Recommendations are presented for further improvements on integrated CHP systems for commercial applications.
Keywords: microturbine, absorption chiller, single effect absorption chiller, desiccant dehumidification
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Reference:
2003 International Congress of Refrigeration
Washington, DC
ICR0331
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