Abstract
The mathematical models of evaporative fluid coolers and evaporative condensers are studied in detail to perform a comprehensive design and rating analysis. The mathematical models are validated using experimental as well as numerical data reported in the literature. These models are integrated with the fouling model presented in an earlier paper, using the experimental data on tube fouling. In this paper, we use the fouling model to investigate the risk based thermal performance of these evaporative heat exchangers. It is demonstrated that thermal effectiveness of the evaporative heat exchangers degrades significantly with time indicating that, for a low risk level (p=0.01), there is about 66.7% decrease in effectiveness for the given fouling model. Furthermore, it is noted that there is about 4.7% increase in outlet process fluid temperature of the evaporative fluid cooler. Also, a parametric study is performed to evaluate the effect of elevation and mass flow rate ratio on typical performance parameters such as effectiveness for rating calculations while surface area for design calculations.
| Original language | English |
|---|---|
| Pages (from-to) | 645-658 |
| Number of pages | 14 |
| Journal | International Journal of Refrigeration |
| Volume | 29 |
| Issue number | 4 |
| DOIs | |
| State | Published - Jun 2006 |
Bibliographical note
Funding Information:The authors acknowledge the support provided by King Fahd University of Petroleum and Mineral throught the research project (ME/RISK-FOULING/230).
Keywords
- Air conditioning Cooling tower
- Evaporative condenser
- Heat transfer
- Mass transfer
- Modelling
- Performance
- Refrigeration
ASJC Scopus subject areas
- Building and Construction
- Mechanical Engineering
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