低溫冷凍櫃節能策略

Strategy of Energy Saving for Low Temperature Freezers

陳柏任(chen po jen)

指導教授 ： 張永宗

國立臺北科技大學/機電學院/冷凍空調工程系所/碩士(2013年)

摘要

現今低溫冷凍系統中，常以溫度控制範圍作為節能的標地，且在業界亦以二元冷凍系統的方式降低壓縮機負載提高至冷能力達到節能的目的。對於此二元低溫冷凍系統的改善，國內外之文獻多以二元低溫冷凍系統中的冷媒部份做為改善之目標。有鑑於此，在本研究中，利用市售二元低溫冷凍系統中，對高溫段壓縮機做啟停電路部份做改良，目的是為達到比冷媒調配的方式更節省控制電力系統所消耗的能量。因此本利用壓縮機的啟停控制達到節能來改善耗電量。
本研究中，將改善後的控制電路應用於二元冷凍系統中，在系統及溫度穩定後來進行測試，蒸發器溫度分別設定為模式一-80℃、模式二-79℃和模式三-78℃來測試，結果顯示設定於模式二-79℃和模式三-78℃啟停時，蒸發器箱內溫度未超出客戶需求溫度，同時耗電量也減少，因此七天量測出耗電量，模式一-80℃實際耗電量188度，模式二-79℃實際耗電量163.1度，模式三-78℃實際耗電量158.5度，因此本文實驗改善電路是可以做到節能策略。

關鍵字

節能 ； 二元系統 ； 低溫冷凍櫃 ； 冷媒

並列摘要

Temperature range control is aim for save energy in low temperature freezing systems nowadays. In this industry, usually use binary freezing system to reduce the load of compressor for reach the goal of energy saving. Regarding improvement of binary freezing system, the international literature shows most of people try to improve refrigerant as a goal. Therefore, in this study, we modify the electric circuit of high temperature part in compressor from Arket binary freezing system to aim for save the energy consumed by control the power system compare with coolant allot way. So, this study used compressor 's on/off control to reduce power consumption for reach the goal of energy saving.
In this study, we use the electric circuit which already improved to applied in binary freezing system to testing after the system and temperature become more steady. There are three different evaporator temperature such as -80℃ (model 1),-79℃ (model 2), -78℃ (model 3) apply in the experiment. The result shown that the temperature inside freezer box do not overtake the setting temperature and power consumption is reduce too, when apply on/off control during the temperature of -78℃ and -79℃.
The actual power consumption of temperature -80℃ is 188kwh, -79℃ is 163.1kwh, -78℃ is 158.5kwh. The conclusion of this study shown it can achieve energy saving policy after modify the electric circuit.

並列關鍵字

energy saving ； binary systems ； low temperature freezers ； refrigerant

參考文獻

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