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Title: A semi-empirical modeling technique for predicting improved performance of water-cooled chillers used in building space cooling applications

Abstract

This paper presents a semi-empirical modeling technique used to predict improved performance of water-cooled chillers used in HVAC applications. The model predicted the system's coefficient of performance (COP) and compressor total energy consumption as a function of condenser inlet-water temperature, evaporator outlet-water temperature, and evaporator load. The model was validated and demonstrated using experimental data from two case studies: a 675 kW (192-ton) chiller used at a high school in South Texas and a 10,550 kW (2,000-ton) chiller located at the physical plant of a university campus in Arkansas. The results showed that the average steady state measured and predicted COP as well as the average measured and predicted compressor energy consumption differed by no more than two percent. Simulations were run to identify improvements in chiller performance and opportunities to save energy.

Authors:
;
Publication Date:
Research Org.:
Univ. of Kansas, Lawrence, KS (US)
OSTI Identifier:
20030601
Resource Type:
Conference
Resource Relation:
Conference: Renewable and advanced energy systems for the 21st Century, Maui, HI (US), 04/11/1999--04/15/1999; Other Information: 1 CD-ROM. Operating system required: Windows i386, i486, Pentium or Pentium Pro, MS Windows 3.1, 95 or NT3.51; Macintosh, Power Macintosh with a 68020 or greater processor, System software version 7.1, 3.5 MB RAM; UNIX; PBD: 1999; Related Information: In: Renewable and advanced energy systems for the 21st century, RAES'99: Proceedings, by Hogan, R.; Kim, Y.; Kleis, S.; O'Neal, D.; Tanaka, T. [eds.], [1125] pages.
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; AIR CONDITIONING; MATHEMATICAL MODELS; COEFFICIENT OF PERFORMANCE; SPACE HVAC SYSTEMS; ENERGY CONSUMPTION; SCHOOL BUILDINGS; CENTRAL HEATING PLANTS

Citation Formats

Medina, M A, and Nutter, D W. A semi-empirical modeling technique for predicting improved performance of water-cooled chillers used in building space cooling applications. United States: N. p., 1999. Web.
Medina, M A, & Nutter, D W. A semi-empirical modeling technique for predicting improved performance of water-cooled chillers used in building space cooling applications. United States.
Medina, M A, and Nutter, D W. Thu . "A semi-empirical modeling technique for predicting improved performance of water-cooled chillers used in building space cooling applications". United States.
@article{osti_20030601,
title = {A semi-empirical modeling technique for predicting improved performance of water-cooled chillers used in building space cooling applications},
author = {Medina, M A and Nutter, D W},
abstractNote = {This paper presents a semi-empirical modeling technique used to predict improved performance of water-cooled chillers used in HVAC applications. The model predicted the system's coefficient of performance (COP) and compressor total energy consumption as a function of condenser inlet-water temperature, evaporator outlet-water temperature, and evaporator load. The model was validated and demonstrated using experimental data from two case studies: a 675 kW (192-ton) chiller used at a high school in South Texas and a 10,550 kW (2,000-ton) chiller located at the physical plant of a university campus in Arkansas. The results showed that the average steady state measured and predicted COP as well as the average measured and predicted compressor energy consumption differed by no more than two percent. Simulations were run to identify improvements in chiller performance and opportunities to save energy.},
doi = {},
url = {https://www.osti.gov/biblio/20030601}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {7}
}

Conference:
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