Energy Saving Measurement

Lee Woo Sing College is committed to green management and education, and is the leading green College in CUHK. Being a pioneer of implementing green technologies on a university campus, we have invented and installed a number of first-in-Hong Kong energy saving and renewable energy systems, such as the smart meter and high-efficiency CIGS solar energy system, etc.. College management is committed to energy conservation. Our Campus Environment and Sustainability Committee and its energy saving working group are established to oversee the energy usage and solicit resources for energy saving initiatives. College also organize a series of green education campaigns to encourage the students and staff to live a green life.


Solar Power System: Department - College Collaboration

A research team led by Prof. Xiao Xudong and Prof. Li Quan of the Department of Physics, who are also affiliated teachers of Lee Woo Sing College, at the Chinese University of Hong Kong successfully developed Cu(InGa)Se2 (CIGS) thin film solar cells that feature low production cost, high efficiency and extensive application prospects in 2011. Its conversion efficiency of 19.4% is the highest among the same kind of solar cells in the greater China region and reaches world-class level, representing a great breakthrough in the development of renewable energy.


Since 2011, Lee Woo Sing College is closely working with Prof Xiao and recruited a team of teachers and honorary consultants to support this project. The project's first sets of solar PV panels will be installed on the two roofs (Picture 1) of the College campus, making it the first-in-Hong Kong educational institute to have the high efficiency CIGS solar PV system installed.




Prof Xiao and Prof Lau, Master of Lee Woo Sing College, consider the installation of CIGS panels on College's roof tops a good opportunity of technological demonstration of CUHK research output on CUHK's own campus, as well as good opportunity of green education to College's students and University community.
The panel system will convert direct current generated by the solar cell to alternating current and input into the electricity grid directly, to minimize transmission loss. The installation of panels as the field demo has been completed at the end of 2016 and the system is now under operation.
During May-2017 to August-2017, about 13,600 kWh power is generated from the system at both north block and south block. these amount of energy can drive about 14,000 pc of 1HP Air-conditionors for 1 hour. According to this production rate, it is estimated that the College will save around $40,000 a year.


Hostel Smart Meter (Chinese Version Only)
宿舍智能電力讀數裝置

為提高學生對節能減排及環境保護的意識,和聲書院在宿舍安裝智能電力讀數裝置,此裝置為全港首個宿舍智能電力管理系統。現時(直至2012年),全港的大學宿舍均提供免費用電(冷氣用電除外)。由於用電免費,許多學生對節約用電意識都相對較低,在離開房間前不關燈、不關電腦、甚至不關高用電量電器的情況並不罕見。有見及此,和聲書院設計了智能電力讀數裝置。

智能電力讀數裝置可分別讀取每房間的冷氣、照明及電插座的用電量,學生可查閱此等資料以了解用電習慣。所有電器用電會統一計算。書院會在每月月初為每房學生提供一個合理而足夠(另加20%額外用電量)的免費用電量*,學生可隨意使用電器(包括冷氣)。當免費電量用完時,學生只要使用八達通卡為戶口作累進計算增值*即可繼續使用電力。

*現行之免費電量及累進增值費率已張貼在增值機上

如何為戶口增值?

當學生的電力戶口低結餘(低於10單位)時,房間內的提示燈會亮起。此時,學生應盡快增值,否則當電量使用完畢時,冷氣用電將即時中斷;由於安全關係,其他用電將繼續提供 (負用電量將於下月的免費用電額或宿舍按金內扣除)。所有免費電量及付費電量均可累積到下一個月,戶口內剩餘的付費電量只可以於退宿時退還。

增值程序

1. 輸入座數,再輸入房間號碼並按ENTER鍵
2. 選擇增值(ADD VALUE)或查閱增值紀錄(ENQUIRY);查閱紀錄需輸入密碼
3. 如需增值,請選擇增值金額($50)
4. 拍八達通卡即完成增值過程(如扣款後卡上少於$35備用額,將不會扣款增值)

如在增值過程中遇上任何問題,請聯絡宿舍員工或院務室。和聲書院之智能電力讀數裝置只接受八達通卡 ( octopus card symbol ) 增值。


Glass Window Film (Chinese Version Only)
玻璃隔熱膜

2013年暑假,和聲書院 LG1 健身室及 LG2 學生餐廳的玻璃幕牆被涂上了一層紅外線隔熱膜,隔熱膜涂層令室內温度降低2-5°C,從節省冷氣機電費支出,達到節能效果。