Energy Saving Analysis of Variable Primary Flow System with Screw Chiller

• Main Authors: GUO, SHU-FANG, 郭淑芳
• Other Authors: 胡石政
• Language: zh-TW
• Online Access: http://ndltd.ncl.edu.tw/handle/kq23bz

碩士 === 國立臺北科技大學 === 能源與冷凍空調工程系碩士班 === 104 === Compare power drawn from around 2009 to 2013 before recording experimental data conversion between chiller room equipment power consumption measurements after modification Finish each device through the monitoring data collected. Improve pre-fixed-frequency centrifugal chiller efficiency of 0.581 kW/ RT, and the improved frequency spiral chiller efficiency of 0.39 kW/RT, chilled water to enhance the effectiveness of improved 32.9% in addition to the tonnage disposed other than changes in the frequency of the host improved efficiency at low load is significantly better. A frequency / secondary side to improve before the fixed-frequency ice water pump efficiency 0.163 kW/RT, a side-conversion efficiency of ice water pump 0.099 kW/RT improved, the chilled water to enhance the effectiveness of the improved 39.3%, improved the In addition to eliminating the need for secondary ice water pump water pump power, it can also save power as the load down, greatly enhance the overall efficiency of ice water pump. Improve pre-fixed frequency efficiency of the cooling water pump 0.165 kW/RT, the improved efficiency of the cooling water pump frequency 0.049 kW/RT, the cooling water pump to enhance the effectiveness of the improved 70.3%, we can see the cooling water pump inverter with a spiral with a host of benefits is very large, due to the low flow rate limit spiral host, and therefore can be down-side of the cooling water pump range is even greater, so the relative energy efficiency and therefore becomes large. On the whole, a / secondary constant flow chiller room to improve the overall efficiency of the system in front of 0.957 kW/RT, a variable flow chiller room for improved system efficiency 0.58 kW/RT, ice water and the improved computer room system performance improved significantly by 41.4% to fixed-frequency systems and full-frequency ice system, full-frequency ice system will power to come.