二次側冰水變頻泵浦節能運轉模式分析

Saving Energy Analysis on Openation Models of Secondary Variable Frequency Chilled Water Pump

李智修(Chin-Hsiu Lee)

指導教授 ： 李文興

國立臺北科技大學/機電學院/能源與冷凍空調工程系碩士班/碩士(2007年)

摘要

本研究之目的是利用理論分析的方法撰寫一程式軟體，在已知管路阻力曲線、泵浦流量與揚程的特性曲線﹙Q-H﹚、流量輸入功的特性曲線﹙Q-L﹚及需求流量下，比較五台不同大小機型泵浦的搭配組合（如單台泵浦運轉或二台泵浦並聯運轉）時能提供其需求流量之耗功，以最小的耗功為目標，找出最佳的搭配組合，並找出在其需求流量下各泵浦之設定頻率，提供國內的泵浦廠商有一個選機的軟體。
目前空調二次側泵浦的選擇，大多數都使用二台或更多台相同規格的泵浦並聯運轉，本研究考慮到空調二次側泵浦的流量會隨著不同的使用情況而改變。可發現在二台泵浦的組合時，以大小配的組合可能節省較多的能源。

關鍵字

泵浦並聯

並列摘要

The purpose of the study is to apply theoretical analyses to develop a specific program. From known piping resistant curve, pump characteristic curve(H-Q), flow rate, input power characteristic curve(Q-L) , and demanding flow rate, the consumed power data in each combination can be made from the comparison from varied combination of five different model pumps, such as only one pump or two pumps operating in parallel. For minimizing power consumption, we can find the best combination and the setting frequency of pumps under a required flow rate, also provide a developed program for pump manufacturers in choosing appropriate pump process.
Currently, the most common secondary pump is to use two or more pumps with the same standard to operate in parallel. In this study, it is considered that the flow rate of secondary pumps in HVAC engineering will be varied with different operation situations. The result shows that the combination of two pumps with one in big size and the other one in small size could save more energy.

並列關鍵字

parallel pump

參考文獻

[1] James B. Rishel，〝Water Pump and Pumping System〞， Mc Graw-Hill（2002）。

[4] Brian J. Moore ＆ D. Scott Fisher、P.E.， 〝Pump Differential Pressure Setpoint Reset Based on Chilled Water Valve Position〞，ASHRAE Transaction 109 、Career and Techinical Eduction（2003）。

[18] Shengwei Wang.Dynamic Simulation of a Building Central Chilling System and Evaluation of EMCS On-Line Control Strategies.Building and Environment.

[19] Shengwei Wang,John Burnett.Online adaptive control for optimizing variable-speed pumps of indirect water-cooled chilling system.Applied Thermal Engineering21(2001)

[22] Donald M.Eppelheimer, P.E. Variable Flow-The Quest for System Energy Efficiency.ASHRAE Transactions 199.