A bioDiesel fueled engine generator with heat recovery from the exhaust as steam and from the coolant as hot water has been installed in the Intelligent Workplace, the IW, of Carnegie Mellon’s School of Architecture. The steam and hot water are to be used for cooling, heating, and ventilation air dehumidification in the IW. This cogeneration equipment is a primary component of an energy supply system that will halve the consumption of primary energy required to operate the IW. This component was installed in September 2007, and commissioning is now underway. In parallel, a systems performance model of the engine generator, its heat recovery exchangers, a steam driven absorption chiller, a ventilation unit, fan coil cooling/heating units has been programmed making use of TRNSYS transient simulation software. This model has now been used to estimate the energy recoverable by the system operating in the IW for different characteristic periods, throughout a typical year in Pittsburgh, PA. In the initial stages of this modeling, the engine parameters have been set at its design load, 27 kW, delivering up to 17 kW of steam and 22 kW of hot water according to calculation. The steam is used in the absorption chiller during the summer and in hot water production during the winter. Hot water is used in desiccant regeneration for air dehumidification during the summer, in IW heating during the winter, and in domestic hot water product year around. Systems controls in the TRNSYS simulation direct the steam and hot water produced in the operation of the engine generator system to meet the IW’s hourly loads throughout seasons.
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ASME 2008 2nd International Conference on Energy Sustainability collocated with the Heat Transfer, Fluids Engineering, and 3rd Energy Nanotechnology Conferences
August 10–14, 2008
Jacksonville, Florida, USA
Conference Sponsors:
- Advanced Energy Systems Division and Solar Energy Division
ISBN:
978-0-7918-4319-2
PROCEEDINGS PAPER
Cogeneration System Performance Modeling
Flore A. Marion,
Flore A. Marion
Carnegie Mellon University, Pittsburgh, PA
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Sophie V. Masson,
Sophie V. Masson
Carnegie Mellon University, Pittsburgh, PA
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Frederik J. Betz,
Frederik J. Betz
Carnegie Mellon University, Pittsburgh, PA
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David H. Archer
David H. Archer
Carnegie Mellon University, Pittsburgh, PA
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Flore A. Marion
Carnegie Mellon University, Pittsburgh, PA
Sophie V. Masson
Carnegie Mellon University, Pittsburgh, PA
Frederik J. Betz
Carnegie Mellon University, Pittsburgh, PA
David H. Archer
Carnegie Mellon University, Pittsburgh, PA
Paper No:
ES2008-54256, pp. 801-808; 8 pages
Published Online:
June 22, 2009
Citation
Marion, FA, Masson, SV, Betz, FJ, & Archer, DH. "Cogeneration System Performance Modeling." Proceedings of the ASME 2008 2nd International Conference on Energy Sustainability collocated with the Heat Transfer, Fluids Engineering, and 3rd Energy Nanotechnology Conferences. ASME 2008 2nd International Conference on Energy Sustainability, Volume 1. Jacksonville, Florida, USA. August 10–14, 2008. pp. 801-808. ASME. https://doi.org/10.1115/ES2008-54256
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