台灣建築產業的耗能量約占全國能源消耗總量之三成，在建築生命週期耗能與碳排放量有超過六成於日常使用階段發生，顯示日常節能之重要性。建築熱水使用伴隨著能源消耗及水資源議題，住宅中熱水系統透過加熱設備產生熱水的過程涵蓋了許多消耗能源的過程，近年因社會經濟進步國民生活水準提升，而耗能最大因素在於人為的使用習慣。本研究目的為調查台灣地區住宅使用熱水設備情況、使用者用熱水習慣與日常耗熱水量的推估，分析在住宅建築中使用熱水的行為之耗能比例與關係。本研究調查及分析結果顯示台灣地區使用者淋浴習慣的變化趨勢，包括使用者於不同季節的用水習慣變化，沐浴平均耗熱水量從過去文獻資料的54.50公升增加到現在的60.08公升，增加了10.2%的熱水耗水量。設備耗能推估結果顯示，住宅熱水系統耗能約占住宅總耗能之21.3%，二氧化碳排放量約占全住宅部門排放之17.6%。調查結果顯示瞬間型瓦斯熱水器為台灣住宅採用率最高之設備，但相較於過去調查比例有明顯降低之趨勢。使用節能型之熱泵熱水器雖初期設備成本最高，若考慮日常使用成本及未來逐漸增長的國民生活用水量，使用節能設備成本較符合經濟效益。成本最低者瞬間型瓦斯熱水器雖每年二氧化碳排放量也偏低，但考慮其使用石化能源天然氣與其影響溫室氣體甲烷排放之可能性，作為國內住宅建築首要之熱水設備選項仍有待探討。

Among the water usage of daily life, hot water usage consumed energy as well. Lifestyle had been affected by the transformation of society and environment include hot water usage behavior consumption in residential buildings in Taiwan. This study uses the investigation of hot water equipment in residential buildings in Taiwan. Estimating the hot water consumption by different hot water usage and analyze the energy consumption in hot water system. The result shows the changing of water usage including two type of shower behavior in different season. And the average hot water consumption by shower are increased from 54.50 liters to 60.08 liters. The increasing rate is 10.2%. According to this survey, it shows the most common hot water equipment is instantaneous gas heater, but the adoption rate has decreasing trend currently. The results of equipment energy consumption analysis show that although the initial equipment cost of the energy-saving heat pump water heater is the highest, the daily energy cost is the lowest. The energy consumption of hot water system occupies 21.3% of residential building. And carbon dioxide of hot water system occupies about 17.6% of all residential building in Taiwan. Although the instantaneous gas water heater with the lowest cost also emits low carbon dioxide per year, considering its use of natural gas as a petrochemical energy and the possibility of affecting the emission of the greenhouse gas methane, it remains to be considered as the primary hot water equipment option for domestic residential buildings.

中文文獻
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英文文獻
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網路文獻
C-1 臺灣自來水公司
https://www.water.gov.tw/
C-2 臺北自來水事業處
https://www.water.gov.taipei/
C-3 經濟部水利署-節約用水資訊網：家庭節水手冊
https://www.wcis.org.tw/Home/Home_4
C-4 台灣櫻花官方網站
https://www.sakura.com.tw/
C-5 經濟部能源局，能源產品單位產熱值表https://www.moeaboe.gov.tw/ECW/populace/home/Home.aspx
C-6 經濟部能源局公告設備能源耗用容許基準https://www.moeaboe.gov.tw/ECW/populace/Law/LawsList.aspx?kind=7&menu_id=3303
C-7 觀測資料查詢(CODiS)－交通部中央氣象局
https://e-service.cwb.gov.tw/HistoryDataQuery/index.jsp
C-8 Sample Size Calculator－Creative Research Systems
https://www.surveysystem.com/sscalc.htm
C-9 經濟部能源局：能源統計月報
https://www.esist.org.tw/publication/monthly_detail?Id=1e7bc926ad3