Evaluation of the simple thermodynamic model (gordon and Ng universal chiller model) as a fault detection and diagnosis tool for on-site centrifugal chillers

Jayaprakash Saththasivam, Gary Tang, Chow Kiat Chan, Kim Choon Ng

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The application of Fault Detection and Diagnosis (FDD) could play a key role in operating chillers at optimum efficiency. As air conditioning consumes a significant proportion (approximately 30% to 50%) of the total power consumption of a commercial building, an effective FDD tool is very much required for a reliable and economic chiller operation. In this paper, the renowned Simple Thermodynamic Model, STM (also known as Gordon and Ng Universal Chiller Model) was utilized to detect and diagnose some of the common faults in centrifugal chillers. Based on the readily available, non-intrusive, steady state measurements extracted from the on-site chillers, the STM model was regressed to obtain two physically meaningful coefficients namely, Thermal Resistance and Internal Entropy Generation. These information-rich coefficients were then analyzed to evaluate the performances and the conditions of the chillers. Despite the large and yet complex on-site chiller operations, equipped with built-in heat recovery such as economizer and intricate control mechanisms, the predictive and diagnostic capabilities of STM in detecting chiller faults has been successfully tested and evaluated based on the data collected from on-site centrifugal chillers. Faults like condenser fouling and reduction in condenser cooling water flow rate were succinctly captured by the STM model.

Original languageEnglish
Title of host publication4th Asian Conference on Refrigeration and Air-Conditioning, ACRA 2009
PublisherNational Taipei University of Technology
Pages69-74
Number of pages6
ISBN (Print)9868509610, 9789868509610
Publication statusPublished - 2009
Externally publishedYes
Event4th Asian Conference on Refrigeration and Air-Conditioning, ACRA 2009 - Taipei
Duration: 20 May 200922 May 2009

Other

Other4th Asian Conference on Refrigeration and Air-Conditioning, ACRA 2009
CityTaipei
Period20/5/0922/5/09

Fingerprint

Fault detection
Failure analysis
Thermodynamics
Economizers
Cooling water
Waste heat utilization
Fouling
Heat resistance
Air conditioning
Electric power utilization
Entropy
Flow rate
Economics

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)

Cite this

Saththasivam, J., Tang, G., Chan, C. K., & Ng, K. C. (2009). Evaluation of the simple thermodynamic model (gordon and Ng universal chiller model) as a fault detection and diagnosis tool for on-site centrifugal chillers. In 4th Asian Conference on Refrigeration and Air-Conditioning, ACRA 2009 (pp. 69-74). National Taipei University of Technology.

Evaluation of the simple thermodynamic model (gordon and Ng universal chiller model) as a fault detection and diagnosis tool for on-site centrifugal chillers. / Saththasivam, Jayaprakash; Tang, Gary; Chan, Chow Kiat; Ng, Kim Choon.

4th Asian Conference on Refrigeration and Air-Conditioning, ACRA 2009. National Taipei University of Technology, 2009. p. 69-74.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Saththasivam, J, Tang, G, Chan, CK & Ng, KC 2009, Evaluation of the simple thermodynamic model (gordon and Ng universal chiller model) as a fault detection and diagnosis tool for on-site centrifugal chillers. in 4th Asian Conference on Refrigeration and Air-Conditioning, ACRA 2009. National Taipei University of Technology, pp. 69-74, 4th Asian Conference on Refrigeration and Air-Conditioning, ACRA 2009, Taipei, 20/5/09.
Saththasivam J, Tang G, Chan CK, Ng KC. Evaluation of the simple thermodynamic model (gordon and Ng universal chiller model) as a fault detection and diagnosis tool for on-site centrifugal chillers. In 4th Asian Conference on Refrigeration and Air-Conditioning, ACRA 2009. National Taipei University of Technology. 2009. p. 69-74
Saththasivam, Jayaprakash ; Tang, Gary ; Chan, Chow Kiat ; Ng, Kim Choon. / Evaluation of the simple thermodynamic model (gordon and Ng universal chiller model) as a fault detection and diagnosis tool for on-site centrifugal chillers. 4th Asian Conference on Refrigeration and Air-Conditioning, ACRA 2009. National Taipei University of Technology, 2009. pp. 69-74
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