熱泵熱水系統之水位控制策略與節能分析

Heat Pump Water Heating System Water Level Analysis and the Control Strategy for Energy Saving

王秋月(Chiu-Yueh Wang)

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(2009年)

摘要

本研究係利用取熱自空調系統的熱泵主機，探討其熱泵系統儲熱槽的水位問題，假設其熱泵系統的儲熱槽容量、儲熱槽水溫、負載需求...等條件皆為已知，其所要探討的是當儲熱槽容量因負載需求持續使用時，使用水位控制與時間控制搭配不同的熱泵能量，並利用離峰電價將儲熱槽補水加熱至初始條件的情形下，此兩種控制的方法能節省多少的能源成本，以提高經濟效益，降低總生命週期成本。
在此案例中，設定總生命週期成本為目標函數，進行補水的水位為變數，搭配已知的儲熱槽及加熱系統元件，匹配不同大小之熱泵能量，透過程式系統進行分析，尋求出此系統之最佳運轉情形，以減少能源消耗，提高熱泵系統之經濟效益，達到節能減碳的目的。

關鍵字

熱泵系統 ； 生命週期成本 ； 水位

並列摘要

In this study, utilizing the waste heat from heat pump chiller of the HVAC system and water level issues of heat storage tank of the heat pump system are discussed. Assuming these conditions are known as follows: the capacity and temperature of heat storage tank, load demand and etc. It is trying to evaluate the capacities of heat storage tank operated in accordance with the demands, utilizing the water level control mode and time program control mode and based on the different capacities of heat pump system. In addition to heat the make-up water of heat storage tank to the initial conditions during the off-peak power period. The study will find out how much energy cost can be saved by using these two control mode, and to improve the economic benefits while lowering the total life cycle cost.

In this case, set the total life cycle cost as objective function, the make-up water level as variable, with known thermal storage tank, heating system components, and heat pumps of different sizes. Then through an analysis of program system to seek out the best operating conditions of the system so as to reduce energy consumption and raise economic efficiency of the heat pump system to achieve the purpose of energy conservation to reduce carbon.

並列關鍵字

heat pump system ； life cycle cost ； water level

參考文獻

〔11〕 李璟柏，「太陽能輔助熱泵熱水器性能提升設計與評估方法研究」，國立台灣大學機械工程學研究所博士論文，2004年。

〔3〕 李剛，「空氣熱源式熱泵之醫院節能應用」，國立台北科技大學冷凍工程空調系，碩士論文，2004年。

〔4〕 宋炎明，「熱泵系統應用於溫室內游泳池之節能分析」，國立台北科技大學

〔9〕 Milan Marcic“Long-term performance of central heat pumps in Slovenian homes”Energy and Buildings(2004)

〔10〕 Abdeen Mustafa Omer“Ground-source heat pumps systems and applications ”Renewable and Sustainable Energy Reviews (2008) 344-371