Browse > Article
http://dx.doi.org/10.17664/ksgee.2019.15.4.039

The Characteristics of Energy Consumption with Operational Conditions for the Central Cooling System  

Park, Gi-Tae (Korea Environment Design Inc.)
Ahn, Byung-Cheon (Department of Mechanical Engineering, Gachon University)
Publication Information
Journal of the Korean Society for Geothermal and Hydrothermal Energy / v.15, no.4, 2019 , pp. 39-45 More about this Journal
Abstract
The operational conditions such as cooling tower water pump flow rate, cooling tower fan flow rate, and chiller capacity in heat source equipment, and supply air temperature and chilled water temperature in air conditioner are considered to study the effects on energy consumption for central cooling system by using TRNSYS program. As a result, the optimal values of supply air temperature and chilled water temperature for minimal total energy consumption are 12℃ and 8℃. And if maximum values of cooling tower water pump and fan flow rate is decreased from 100% to 40%, energy consumptions are increased 170MJ/day and 63.2MJ/day, respectively.
Keywords
Central cooling system; Chiller capacity; Cooling tower fan; Cooling tower water pump;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Braun, J. E., S. A., Klein, W. A., Beckman, and J. W. Mitchell, 1989, Methodologies for optimal control of chilled water systems without storage, ASHRAE Transactions, Vol. 95, No. 1, pp. 652-662.
2 Ahn, B. C. and Mitchell, J. W., 2001, Optimal control development for chilled water plants using a quadratic representation, Energy and Buildings 33 No. 4, pp. 371-378.   DOI
3 Kim, Y. I., 2010, Performance of a water cooled chiller by controlling chilled water exit temperature, Proceedings of the SAREK 2010 Summer Annual Conference, pp. 1136-1141.
4 Rho, J. D., 2014, Optimization of cooling water system, Proceedings of the SAREK 2014 Summer Annual Conference, pp. 575-581.
5 Ahn, B. C., 2017, The effect of operational conditions of cooling water system on energy consumption for central cooling system, Korea Society of Geothermal Energy Engineers, Vol. 13, No. 4, pp. 8-13.
6 TRNSYS, 2007, Transient system simulation program Ver. 16.1, Solar Energy Laboratory, University of Wisconsin-Madison.