本研究利用改良式熱管熱交換器模組進行預冷空調箱節能評估研究。研究使用設計者設計之預冷空調箱、改良式熱管熱交換器模組以及其他附屬設備。實驗以美國冷凍空調協會(ASHRAE)外氣嚴苛條件與台灣中央氣象局新竹地區近10年平均5月至10月各月之外氣溫度進行試驗，並使用1 ROW及2 ROW進行實驗變數。
研究結果，改良式熱管熱交換器模組有助提升預冷空調箱節能率，在考慮外氣嚴苛條件、5月至10月乾球溫度及相對濕度條件並使用2 ROW改良式熱管熱交換器模組下，其冷卻盤管節能率最高提升至28.1%；模擬之再熱盤管節能率最高提升至54.9%。外氣嚴苛條件、5月至10月只針對外氣乾球溫度條件並使用2 ROW與1 ROW改良式熱管熱交換器模組下，其冷卻盤管節能率最高提升至29%與23.9%；模擬之再熱盤管節能率最高提升至53.3%與51.2%。
此研究最後使用環狀式熱管空調箱與可控熱管熱回收預冷空調箱進行節能分析比較，比較結果可知因可控熱管具有可控雙風門調整，能使送風焓值自由調整所需之需求，並且一年當中最大節能溫差區間節能4196.1mJ/h。國內文獻參考及實際設備甚少，本研究探討結果，有助於未來使用熱管空調箱之相關研究。

In this study, a modified heat pipe heat exchanger module was used to evaluate the energy efficiency of the pre-cooled air handler unit. The study used the customized heat pipe heat exchanger module, and other ancillary equipment including adjustable dampers. The experiments were conducted using the American Society for Refrigeration and Air Conditioning (ASHRAE) severe conditions for outside air and the average outside air temperature in the Hsinchu area of the Central Weather Bureau of Taiwan for the past 10 years from May to October, both one row and two rows of heat pipe heat exchangers are tested.
The results showed that the modified heat pipe heat exchanger module improves the energy efficiency of the pre-cooled air handler unit by increasing the cooling coil energy efficiency up to 28.1% while reducing reheat coil energy consumption up to 54.9% under severe external air conditions, dry bulb temperature and relative humidity conditions from May to October with the 2 ROW modified heat pipe heat exchanger module. For the severe external air conditions, May to October, the maximum cooling coil energy savings were 29% and 23.9% for the 2 ROW and 1 ROW modified heat pipe heat exchanger modules, respectively.
The results show that the controllable damper function, which allows the enthalpy of air supply to be freely adjusted according to the required demand, results in a maximum energy saving 4196.1 MJ/h in a year. The results of this study will be useful for future research and practical application of heat pipe air handler unit. The results of this study will be helpful for future research and practical application of heat pipe air handlers.

[1]經濟部能源局，國內能源消費年報，經濟部能源局，2020年。
[2]經濟部能源局，工業部門電力統計，經濟部能源局，2020年。
[3]M.Mochizuki, “HEAT PIPES: EVOLUTION OF ENDLESS APPLICATION OPPORTUNITIES” , Heat Pipe Science and Technology., vol. 5, pp. 69-76 , 2014.
[4]W.Xiao Ping,J.Peter and A.Aliakbar, “Application of heat pipe heat exchangers to humidity control in air-conditioning systems” ,Applied Thermal Engineering., vol. 17, pp. 561-568,June. 1997.
[5]Y.H.Yau , “Analysis of enthalpy change with/without a heat pipe heat exchanger in a tropical air conditioning system”, International Journal of Energy Research., vol. 30, pp. 1251-1263, December. 2006.
[6]J.Hussam, “Economic assessment of the benefits of wraparound heat pipes in ventilation processes for hot and humid climates”, International Journal of Low-Carbon Technologies., vol. 4, pp. 52-60, April .2009.
[7]H.Jouhara and R.Meskimmon, “Experimental investigation of wraparound loop heat pipe heat exchanger used in energy efficient air handling units” ,Energy., vol. 35, pp. 4592-4599, December. 2010.
[8]Y.H.Yauand M.Ahmadzadehtalatapeh, “A review on the application of horizontal heat pipe heat exchangers in air conditioning systems in the tropics”,Applied Thermal Engineering., vol. 30, pp. 77-84, February. 2010.
[9]H.Jouhara and H.Ezzuddin, “Thermal performance characteristics of a wraparound loop heat pipe (WLHP) charged with R134A”,Energy., vol. 61, pp. 128-138, November. 2013.
[10]A.A.Eidan,S.E.Najim and J.M.Jalil, “An experimental and a numerical investigation of HVAC system using thermosyphon heat exchangers for sub-tropical climates” , Applied Thermal Engineering., vol. 114, pp. 693-703, March. 2017.
[11]H.Jouhara and R.Meskimmon “An investigation into the use of water as a working fluid in wraparound loop heat pipe heat exchanger for applications in energy efficient HVAC systems”,Energy., vol. 156, pp. 597-605, August. 2018.
[12]COFAN USA, What Are Heat Pipes, 2021.
[13]王啟川，熱交換設計，熱管，五南圖書出版股份有限公司，2007。
[14]Advanced Cooling Technologies, Inc., HEAT PIPE TECHNOLOGY FOR ENERGY RECOVERY, 2022.
[15]SI Edition, 2017 ASHRAE Handbook. Refrigeration, 2017.
[16]交通部中央氣象局，氣候月平均，取自: https://www.cwb.gov.tw/V8/C/C/Statistics/monthlymean.html，2022年。