帷幕牆是近代建築產物，由於外觀具科技感、施工便利與低成本因素深受歡迎。但帷幕牆適用於寒帶國家，藉由玻璃溫室蓄熱原理，提升室內溫度達到舒適性，並降低暖氣之用電量。而帷幕牆傳至亞熱帶的台灣，卻造成反效果，成為大樓耗電量的主因，因此，如何保有帷幕牆之優點又能達到節能效益則是重要的課題之一。本研究選擇台北市地區同時興建之兩棟辦公大樓，所使用之帷幕牆框材分別為塑鋼與鋁，分別實測其透熱率與節能效益。結果得知塑鋼材質帷幕牆透熱率為87%～110%，鋁製帷幕牆透熱率為101%～174%從節能效益考量，兩者相較，使用塑鋼材質帷幕牆較鋁製帷幕牆每月可節省19%之電費。

Curtain wall is a product of modern architecture, as the appearance of a technological sense, convenience and low cost factors of construction is more popular for people. Curtain wall suit for the cold area, through the glass greenhouse regenerative principle, improve the indoor temperature to comfort and reduce heating and electricity. The curtain wall spread to subtropical Taiwan, but have adverse effect, as the main cause of building energy consumption, therefore, how to retain the advantages of curtain wall and reach the energy efficiency is one of important topics. In this study, two sites of office buildings in Taipei are selected as research target. We aim to measure the energy consumption of the polyoxymethylene (POM) curtain wall and the aluminum curtain wall. Due to the high proportion area are composed by glass, the thermal resistance is limited in window frame materials. The POM curtain wall has heat penetration rate of 87% to 110% and the aluminum curtain wall has heat penetration rate was 101% ~ 174% and its indoor temperature is higher than outdoor. By calculating the unit space of energy consumption, Estimating the expenditure of electricity consumption in regulating indoor thermal condition, aluminum curtain wall building is more than POM curtain wall building can save about 19% of the expenditure of electricity consumption per month.