Sizing CCHP Systems for Variable and Non-coincident Loads

Authors

  • Anthony Sclafani mechanical engineering from San Diego State University
  • Asfaw Beyene Department of Mechanical Engineering San Diego State University

DOI:

https://doi.org/10.13052/dgaej2156-3306.2331

Keywords:

CCHP, challenges, heat recovery, part load, ef ficiency

Abstract

Because of its superior efficiency and peak load mitigation capabili-
ties, considerable attention has been given recently to combined cooling,
heating and power (CCHP). The technology enjoys tax bene fits, incen-
tives, accelerated permit processes, etc., at the local, state, and federal
levels. One serious challenge to the implementation of CCHP systems is
matching and sizing the system to strongly and frequently varying load
conditions. Load variation is a serious design matter because the system
efficiency drops significantly at part-load. This article presents matching
and sizing related challenges of CCHP systems with emphasis on opera-
tion-related and weather-driven load factors. Regional data were used to
evaluate the success of recent incentive-driven CCHP implementations
and evaluate the signi ficance of part-load operation on system perfor-
mance. Load profiling strategies are developed for equipment sizing and
selection to mitigate part-load issues and address system flexibilities.

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Author Biographies

Anthony Sclafani, mechanical engineering from San Diego State University

Anthony Sclafani recently graduated with a Master of Science
degree in mechanical engineering from San Diego State University.

Asfaw Beyene, Department of Mechanical Engineering San Diego State University

Professor Asfaw Beyene, Ph.D., is a faculty member of the Depart-
ment of Mechanical Engineering at San Diego State University. Teaching
thermal courses since 1990, he also serves as the director of the Industrial
Assessment Center at SDSU and co-director of the Paci fic Region CHP
Application Center. In his capacity as director of IAC, he has surveyed
close to 400 manufacturing plants. He specializes in energy systems. He
received his Ph.D. in mechanical and aerospace engineering from the
Warsaw University of Technology. He is member of American Society of
Mechanical Engineers; American Society of Heating, Refrigeration, and
Air-conditioning, and Association of Energy Engineers. Dr. Beyene may
be contacted at abeyene@rohan.sdsu.edu.

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Published

2008-06-23

How to Cite

Sclafani, A. ., & Beyene, A. . (2008). Sizing CCHP Systems for Variable and Non-coincident Loads. Distributed Generation &Amp; Alternative Energy Journal, 23(3), 6–19. https://doi.org/10.13052/dgaej2156-3306.2331

Issue

2008: Vol 23 Iss 3

Section

Articles