Media

HKU research team develops Novel Sustainable Lighting Technology – Ultra-low-loss Magnetic Ballasts

20 Feb 2012

An HKU Department of Electrical & Electronic Engineering research team led by Professor Ron Hui has achieved a major breakthrough in lighting technology with the invention of the environmentally friendly "Ultra-low-loss magnetic ballasts" for use in fluorescent lamps.

The new ballasts are having higher energy efficiency, longer product lifetime and can be re-cycled compared to the electronic ones now commonly in use worldwide. The new energy saving magnetic device has been adopted by the lighting industry.

The invention will also help promote a new concept of "Sustainable Lighting" which measures sustainability according to three important criteria of
(1) High energy efficiency
(2) Long product lifetime (>10 years)
(3) Recyclability (>80% materials recyclable)

The current Energy Labeling Scheme emphasizes only energy efficiency.

Fluorescent lamps have been used as a major light source worldwide since its invention at early 1940's. Over the last 30 years, electronic ballasts have emerged as a more energy efficient solution to replace the old magnetic ballasts, a device to limit the current and power discharge of the lamps.

However, the electronic waste issue increases with the increasing popularity of electronic ballasts. According to market survey, over 200 million units of electronic ballasts were made in 2005. Electronic ballasts have typical lifetime of 3 to 5 years, cannot be recycled and therefore their disposal could lead to serious environmental problems.

Professor Ron Hui, HKU Chair of Power Electronics, will explain his invention and demonstrate to the media the new device in a briefing with details as follows:

Date: February 21, 2012 (Tuesday)
Time: 11:30 am
Venue: Room 701, Knowles Building, HKU

For media enquiries, please contact Ms Trinni Choy (Assistant Director (Media), Communications and Public Affairs Office) tel: 2859 2606 / email: pychoy@hku.hk or Ms Melanie Wan (Manager (Media), Communications and Public Affairs Office) tel: 2859 2600 / email: melwkwan@hku.hk .