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Application Potential of a Dew-Point Cooling Tower in Selected Energy Intensive Applications in Temperate Climate

Journal Article · · Applied Sciences
DOI:https://doi.org/10.3390/app14177605· OSTI ID:2566264
 [1];  [1];  [1];  [1];  [1];  [2];  [3]
  1. Wroclaw University of Science and Technology (Poland)
  2. Argonne National Laboratory (ANL), Argonne, IL (United States)
  3. University of Illinois, Chicago, IL (United States)
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In the article, the application potential of the dew-point cooling tower (DPCT) in selected energy-intensive applications in temperate climates was analyzed and discussed. The applications selected for analysis are power generation with natural gas turbines and chilled water air conditioning systems. The study is based on a mathematical model derived from a modified ε-NTU model. The model was validated against experimental results and showed satisfactory agreement with the experimental data. DPCT was compared with a typical cooling tower limited by the wet-bulb temperature (wet-bulb cooling tower, WBCT). The simulation results showed that DPCT is able to provide significant energy savings in energy-intensive applications; therefore, its application potential in temperate climates can be considered justified. In the case of gas turbines, DPCT was able to generate 2 to 10 percentage points more capacity than operating on outdoor air and 1.8 to 5 percentage points more than operating with WBCT. In the case of air conditioning systems, the system equipped with DPCT achieved EERs (energy efficiency ratios) higher by 1 to 7.2 compared to dry cooling and by 0.3 to 5.1 compared to systems equipped with WBCT. The annual energy savings obtained by the system with DPCT were 14.7 MWh compared to WBCT and 30 MWh compared to dry cooling.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Energy Efficiency Office. Building Technologies Office; Polish National Agency for Academic Exchange (NAWA); Lider X
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
2566264
Journal Information:
Applied Sciences, Journal Name: Applied Sciences Journal Issue: 17 Vol. 14; ISSN 2076-3417
Publisher:
MDPICopyright Statement
Country of Publication:
United States
Language:
English

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Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
cooling tower
dew-point cooling
energy efficiency
renewable energy