- 學位論文
冰溫熱飲水機預熱裝置之節能改善研究
The Energy-efficiency-booting Research on the Preheater of Hot-warm-cold Dispenser
摘要
本研究旨在減少飲水機系統其加熱與製冷之運轉時間，使其降低消耗功率進而提升能源效率。研究中是使用熱回收的裝置，包括溫水熱交換裝置與預熱桶裝置，進行初級與次級的生水預熱行為，來提高生水之溫度減少加熱器加熱煮沸的時間，並降低進入冰水膽之溫水溫度減少冷凍系統之運轉時間，進而提升能源效率值(Energy Efficiency)的可行性。其實驗結果顯示： 24小時保溫耗電量，在加裝具保溫效果之預熱桶及改裝溫水熱交換裝置其耗電量最少，節省7.9%電量，其每天所排放CO2最低值為0.4137kg。經由加裝具有儲熱能力之預熱桶或換裝溫水熱交換裝置之條件下，在熱水系統方面，熱水膽進水平均水溫上升7.1~16.2℃，其熱水膽加熱煮沸時間減少50~270秒左右，熱水動態能源效率值(EEh)增加約5.95~43.55%；在冰水系統方面，冰水膽進水平均水溫約21.4~23.9℃，冰水膽進水溫度降低約1.8~4.3℃，其冰水膽壓縮機運轉製冷時間減少210~790秒左右，冰水動態能源效率值(EEc)增加約12.00~54.33%。
並列摘要
This study aims to reduce the operating time of heating and refrigeration in drinking fountain system in order to decrease the power consumption and increase energy efficiency. Heat recovery device, including warm and hot water exchange and preheating barrel, is adopted for primary and secondary unboiled water preheating to increase the temperature of unboiled water, reduce the boiling time of heater, lower temperature of warm water in ice water gallbladder, decrease the operation time of freezing system in order to enhance the feasibility of energy efficiency. The results showed that, the 24h energy consumption for heat preservation was the lowest in the water dispenser equipped with a preheating bucket with heat preservation effect and the warm-water heat exchanger thereof renovated, which could save 7.9% electric consumption, with a lowest value of CO2 discharge 0.4137kg. Under the conditions that the water dispenser was equipped with a preheating bucket with heat accumulation capacity or the warm-water heat exchanger was renovated, as to the hot water system, the average temperature of the water entering the hot water container increased by 7.1-16.2℃, the time to heat and boil the hot water container reduced by about 50-270s and the dynamic energy efficiency of the hot water (EEh) increased by about 5.95~43.55%. As to the cold water system, the average temperature of the water entering the cold water container was about 21.4~23.9℃, which reduced by about 1.8~4.3℃. The compressor operation and refrigeration time of the cold water container reduced by about 210-790s and the dynamic energy efficiency of the cold water (EEc) increased by about 5.95~43.55%.