Abstract
A novel approach is proposed for applying cool thermal storage to reduce the on-peak demand of a water-cooled chiller. By charging the store at night via a cooling tower, and using this water to supply the condenser of a chiller during on-peak hours, cooler than normal water is supplied to the chiller. A feasibility study of this system was conducted using TRNSYS - a transient simulation modeling program examining varying capacities of cooling tower and thermal store volumes. These systems were tested using geographic weather data that demonstrated conducive diurnal changes in wet-bulb temperature (Twet). Results suggest that the use of cool water thermal storage in this way can reduce both on-peak energy demand and on-peak power use by as much as 35%. System optimization is dependent on the thermal storage efficiency, the capacity of the cooling tower, and the diurnal change in Twet.
Original language | English (US) |
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Pages (from-to) | 339-356 |
Number of pages | 18 |
Journal | Applied Energy |
Volume | 66 |
Issue number | 4 |
DOIs | |
State | Published - Aug 2000 |
Keywords
- Chiller
- Condenser
- Cool thermal storage
- Wet-bulb temperature
ASJC Scopus subject areas
- Mechanical Engineering
- General Energy
- Management, Monitoring, Policy and Law
- Building and Construction
- Renewable Energy, Sustainability and the Environment