Commercial absorption chiller models for evaluation of control strategies
Conference
·
OSTI ID:87470
- Univ. of Wisconsin, Madison, WI (United States). Solar Energy Lab.
A steady-state computer simulation model of a direct fired double-effect water-lithium bromide absorption chiller in the parallel-flow configuration was developed from first principles. Unknown model parameters such as heat transfer coefficients were determined by matching the model`s calculated state points and coefficient of performance (COP) against nominal full-load operating data and COPs obtained from a manufacturer`s catalog. The model compares favorably with the manufacturer`s performance ratings for varying water circuit (chilled and cooling) temperatures at full load conditions and for chiller part-load performance. The model was used (1) to investigate the effect of varying the water circuit flow rates with the chiller load and (2) to optimize chiller part-load performance with respect to the distribution and flow of the weak solution.
- OSTI ID:
- 87470
- Report Number(s):
- CONF-950104--
- Country of Publication:
- United States
- Language:
- English
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