Energy saving and environmental impact of optimizing the number of condenser fans in centrifugal chillers under partial load operation

被引：22
作者：
Deymi-Dashtebayaz, Mahdi [1 ]
Farahnak, Mehdi [2 ]
Abadi, Reza Nazeri Boori [1 ]
机构：
[1] Hak Sabzevari Univ, Dept Mech Engn, Sabzevar, Iran
[2] Islamic Azad Univ, Rasht Branch, Young Researchers & Elite Club, Rasht, Iran
来源：
INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID | 2019年 / 103卷
关键词：
Maximum coefficient of performance; Partial load optimization; Vapor compression chiller; Optimal number of condenser fans; AIR-COOLED CHILLERS; THERMODYNAMIC ANALYSIS; COMMERCIAL BUILDINGS; PERFORMANCE; SYSTEM; TEMPERATURE; EFFICIENCY; OPTIMIZATION; VENTILATION; SIMULATION;
D O I：
10.1016/j.ijrefrig.2019.03.020
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
In this paper, an optimization model is extended to optimize the coefficient of performance of refrigeration systems at partial load operation, based on optimal number of condenser fans. The sizes of vapor compression chillers are 703, 1266 and 1758 kW, and the number of fans varies from 1 to 6 while the ambient temperature ranges from 30 to 50 degrees C and partial load ranges from 0.25 to 1. Results show that the partial load where the optimized COP reaches its maximum value, ranges from 0.68 to 0.76 and decreases by increasing the size of chiller A correlation is proposed for partial load at which COP reaches its maximum value, as a function of nominal cooling capacity and outdoor ambient temperature. Finally, it is found that the average amount of 5.6 GWh/year electric energy saving and 5.1 ton/year CO2 emission reduction can be achieved by optimization of number of condenser fans. (C) 2019 Elsevier Ltd and IIR. All rights reserved.
引用
收藏
页码：163 / 179
页数：17
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