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Feasibility of lowering the condenser's inlet water temperature of a chiller using thermal water storage

Author

Listed:
  • Asrael, J.
  • Phelan, P. E.
  • Wood, B. D.

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 TRNSYSÂ -- 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.

Suggested Citation

  • Asrael, J. & Phelan, P. E. & Wood, B. D., 2000. "Feasibility of lowering the condenser's inlet water temperature of a chiller using thermal water storage," Applied Energy, Elsevier, vol. 66(4), pages 339-356, August.
    • Handle: RePEc:eee:appene:v:66:y:2000:i:4:p:339-356
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    References listed on IDEAS

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    1. Liu, K. & Güven, H. & Beyene, A. & Lowrey, P., 1994. "A comparison of the field performance of thermal energy storage (TES) and conventional chiller systems," Energy, Elsevier, vol. 19(8), pages 889-900.
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    Cited by:

    1. Zhao, Dongliang & Tan, Gang, 2015. "Numerical analysis of a shell-and-tube latent heat storage unit with fins for air-conditioning application," Applied Energy, Elsevier, vol. 138(C), pages 381-392.
    2. Muñoz, J. & Martínez-Val, J.M. & Abbas, R. & Abánades, A., 2012. "Dry cooling with night cool storage to enhance solar power plants performance in extreme conditions areas," Applied Energy, Elsevier, vol. 92(C), pages 429-436.

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