Installation of T5 Fluorescent lamp and Photovoltaic System in MYC

CCC Ming Yin College installed T5 fluorescent lamps in the school campus in August 2012. Photovoltaic [PV] System was installed in October 2015. The system absorbs solar energy from the sun and converts into electric energy supplying the lightings in Classroom 505. The above system is sponsored by Environment and conservation Fund, Environmental Education and Community Action CEEQ (A) projects (Minor works).

The system comprises of a 1500W PV array, 1 set solar charge controller, 1 set battery, associated control hubs and a Performance Monitoring system.

The PV array is formed by 6 pieces of PV modules each 250W and installed on the steel structure on roof.

The system is a standalone system. The PV modules absorb solar energy and generate DC power. The DC power will be transmitted to the batteries for storage. When the classroom lighting needs electricity, power will be supply to the system via the charge controller. In case of consecutive rainy days, the PV array may not supply sufficient energy for the lighting need and the capacity of the battery will drop. If the battery capacity drops to certain level, the supply of the light will be change-over to grid supply to protect the battery from over discharge. The system will resume normal automatically until the battery recharged by PV array.

 

安裝T5光管及太陽能光伏系統

銘賢書院分別於2012年8月及2015年10月安裝T5光管及太陽能光伏系統。以上項目由環境及自然保育基金、環保教育和社區參與項目(小型工程項目)贊助興建。

此系統吸收太陽能轉換成電能,給予505號課室提供照明之用。此系統由1500W太陽能光伏系統由一組光伏陣列,一套太陽能充電控制器,一組儲電池及相關的控制中心和效能監察系統組合而成。

太陽能光伏陣列是由六塊250W光伏電池組件組成,並用鋼材支架安裝在屋頂上的。此系統是一個獨立的系統,光伏電池組件吸收太陽能並產生直流電源,將直流電源傳送到儲電池,當課室需要照明時,所需的電力將通過充電控制器供應到系統內。

在連續陰天或雨天的情況之下,太陽能光伏組件提供給照明時的電量將會下降,
如果電池容量下降到一定的程度時,供應照明的所需電源將會切換到電網電源,以保護電池不會過度放電。

直到由太陽能光伏組件對儲電池完成充電,系統將會自動恢復正常。