- 學位論文
高溫瞬熱多功能熱泵系統之開發與研究
The Development and Investigation of the High Temperature & Instant Heat Multifunction Heat-Pump System
摘要
本研究主要目的為利用熱泵系統具有高製熱效率的特性來取代一般傳統瓦斯或電熱水器，且熱泵系統的製冷側及製熱側皆可做應用，使得能源使用上更具效益。接著將兩台主機以基於舊有熱泵串疊系統的概念進行水路設計，將兩台主機做水路串聯及並聯模式的設計，以達到瞬熱的效果。 實驗部分分為中溫熱泵以及高溫熱泵部分。中溫部分以國家標準測試法進行測試，分析其水流量對於主機效果的影響，並利用獲得之實驗數據建立其特性方程式做數學分析；高溫熱泵採新式冷媒R-245fa進行實驗，利用市面上傳統蒸氣壓縮系統元件來對新式冷媒做測試，並評估其可行性。 第二部分則為利用中溫實驗數據，搭配設計之水管路以兩台中溫主機來進行串、並聯分析，並利用熱力學及熱傳學為基礎之數學模擬方法來進行出水溫度、COP等效果預測。模擬結果顯示以兩台中溫主機進行並聯模式運轉時熱水流量10LPM時熱水供水可達52.9oC，系統COP隨供水流量越大而越大；串聯模式效果則與兩台主機之重疊溫度（overlap temperature，DT）有關，DT越小則系統COP越高。
並列摘要
The main purpose of this research is to replace traditional gas or electric water-heater with heat-pump system. Not only could the heat-pump system produce heat in a highly efficient way but the energy-using could be more efficient by using both the cooling side and the heating side of this system. Then design two heat-pump systems’ waterway based on traditional cascade heat-pump system concept. Moreover, design two systems in series-mode and parallel-mode to provide instant heat water. This research divides into two parts: medium-temperature and high-temperature heat-pump. First, use National Standard Testing Method in the medium-temperature heat-pump to analyze the influence on heat-pump system in different volume flow rate. And use experimental data to establish characteristic equation for further analysis. High-temperature heat-pump uses the new refrigerant called as R-245fa to experiment and uses normal vapor compression system component to establish, test and estimate the feasibility. In the second part, use medium-temperature experiment data cooperating with waterway design to analyze the series and parallel-mode systems. Moreover, use Thermodynamics and Heat Transfer to simulate the temperature of leaving water, COP and etcetera. The result shows that two medium-temperature heat-pump running as parallel mode at hot water flow rate equals to 10LPM has 52.9oC supply water while system COP larger with water flow rate larger. On the other hand, series-mode performance related to system overlap temperature(DT) while smaller DT gives larger COP.