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A Retrofit Integration of an Absorption Chiller With a Microturbine Array

[+] Author Affiliations
Toussaint Williamson, Mike Luker

Eastern Municipal Water District, Perris, CA

R. L. Hack

RHEC, Corona, CA

Paper No. GT2005-68425, pp. 135-141; 7 pages
  • ASME Turbo Expo 2005: Power for Land, Sea, and Air
  • Volume 4: Turbo Expo 2005
  • Reno, Nevada, USA, June 6–9, 2005
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 0-7918-4727-6 | eISBN: 0-7918-3754-8
  • Copyright © 2005 by ASME


The overall system efficiency of a microturbine generator system, and hence the economic viability, are greatly enhanced through co-generation. The utilization of the exhaust energy for heating needs is well understood and has been extensively implemented. Potentially more desirable but having found far less implementation is the integration of microturbines with absorption chillers to generate cold water. Long recognized as a tremendous opportunity in HVAC systems, the integration of a microturbine with an absorption chiller is complicated by the relatively low quality and quantity of heat available from the traditionally recuperated microturbine system. This paper address the design process and the issues encountered in developing a 160 ton absorption chiller system integrated with an array of eight, 60-kW Capstone microturbines. The designed system is not a pre-packaged turbine/chiller system but rather a system that integrates a mix of existing and new microturbines with a commercial gas-to-liquid heat exchanger and a commercial single effect Li-Br absorption chiller. The goal of the effort is demonstrate a cost effective retrofit installation of an absorption chiller with existing microturbines to effectively provide base load chilling for the building’s HVAC needs.

Copyright © 2005 by ASME



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