PIONEERING CLEAN ENERGY PROJECT IN HONG KONG

In a project that will provide a blueprint for future Hong Kong schools, Jebsen Industrial is turning Sing Yin Secondary School into a sustainable low-carbon institution using leading technologies from a range of partners.

Jebsen Industrial is turning Sing Yin Secondary School into a sustainable low-carbon institution using leading technologies from a range of partners.
The Challenge: Create a Model Low-carbon School for Hong Kong

Hong Kong has no indigenous sources of traditional energy, such as oil, gas, or coal, and so relies on imported fossil fuels. With local demand and international fuel prices rising, the government of Hong Kong is actively promoting energy efficiency and renewable energy in the territory. It would like to see Hong Kong launched on the path to sustainability and generating between 1% and 2% of its total electricity supply from renewable sources by 2012.

A key challenge for sector pioneers, such as Jebsen Industrial, is a lack of market knowledge about the properties and performance of renewable energy systems. For example, few local building developers and architects understand the viability of custom-made solar panels for use on curtain walls. These BIPV systems have a higher initial cost than conventional materials, but generate power to lower costs for tenants in the longer term.

“At this early stage of the renewable energy sector, solid demonstration projects are a must if Hong Kong is to achieve more widespread acceptance of renewable energy technologies and become a more sustainable city,” said Raymond Chan, General Manager, Energy Department of Jebsen Industrial’s Engineering & Technology Division.


Significant Demonstration Project

In early 2010, Jebsen Industrial helped the Architectural Service Department (ASD) of the Hong Kong SAR Government to create a sustainable low-carbon secondary school in Hong Kong. The project would make the new campus of Sing Yin Secondary School a model of renewable energy technology and, if successful, would provide a blueprint for new schools being built in Hong Kong in the future, helping the territory reduce its carbon footprint.

Following extensive design work, Jebsen Industrial began installing the new clean energy and energy efficiency systems in March 2011, completing the project in September 2011.

“Jebsen Industrial has been an EMSD contractor for many years. As a pioneer of clean energy for South China, with proven experience in the renewables field, we were uniquely able to deliver the innovative design, high-quality products, and reliable service that this project demands,” Mr. Chan continued.

Jebsen Industrial is an acknowledged leader in environmental systems in Greater China. With expertise in the latest clean energy technologies from around the world, it has a portfolio of renewable energy projects ranging from gas engine installations in landfills, coal mines, and luxury hotels to solar and wind energy systems in residential, commercial, governmental, and industrial settings.

The Sing Yin project is a landmark for the region’s renewable energy sector for several reasons.

  • The electricity generated by the school’s grid-connected systems will be automatically monitored and a monthly report will be sent to EMSD for analysis. If a satisfactory result is achieved, the systems will become standard for Hong Kong schools. In this way, the project could positively impact Hong Kong’s sustainability well into the future.
  • Representatives from government organizations, professional institutions, and industry groups will be able to study the school’s systems on technical tours. This will provide valuable experiences for those involved in promoting, regulating, developing, and deploying renewable energy solutions in Hong Kong.
  • This is the model school in Hong Kong to use BIPV (Thin Film) and BIPV (Mono) as the sun-shading facade of the building. Installed on the south and west elevations, this will produce electricity for direct cost savings and also reduce the air-conditioning load for further operating cost reduction.
 


The Solution: Customized Technologies

Crucial elements of the Sing Yin Secondary School project include:

  • Photovoltaic systems on the building facade and rooftop to generate electricity from solar energy;
  • A roof-mounted wind turbine to produce electricity from wind energy;
  • A new hybrid roof-mounted system to provide water heating;
  • A connection to the CLP power grid;
  • Performance monitoring to international standards (IEC 61724) and monthly reporting; and
  • A CCMS system linking to an LCD display in the school foyer to show daily renewable power generation data.


Jebsen Industrial customized these solutions for Hong Kong using world-class technologies such as SunTech PV panels, SMA inverters, Lorentz sun trackers, Trony thin film solar cells, Sunda evacuated tube solar collectors, Quoncion PV modules, and Hi-VAWT vertical-axis wind turbines.


Innovative PV Technologies

Jebsen Industrial has installed a total photovoltaic (PV) array of about 450 m2 at Sing Yin School for an installed capacity of 74.5 kW.

This array includes PV panels on the roof of the new seven-storey school building. These offer far better solar energy availability than designs based on vertical surfaces and are mounted on sun trackers to achieve maximum irradiation and power. In addition, Sing Yin is also pioneering the use of building-integrated PV technologies (BIPV). It is using BIPV (Thin Film) and BIPV (Mono) as the sun-shading facade on the southern and western sides of the building.

“BIPV systems are particularly relevant to Hong Kong, where we have such a high percentage of high-rise buildings and no extra land available for renewable energy installations,” said Mr. Chan.

The long-term average output of the BIPV system is estimated to be 94,900 kWh/year. Assuming an electricity tariff of /kWh, this results in an estimated saving of 0 per day, amounting to , 900 each year. At this output, the school will also offset more than 129,700 pounds of CO2 emissions that would have been produced by burning fossil fuels for electricity generation. The reduction in peak power demand and air-conditioning cooling load due to the installation of the BIPV systems adds further value.


Efficient Urban Wind Turbine

Sing Yin is also showcasing wind technology. A wind turbine has been installed on the upper roof of the lift machine room to use wind energy to turn an electric generator and produce power. A special vertical-type wind turbine is being used as this provides optimal safety and stability, with reduced noise and vibration for deployment in urban settings.


New Custom-made Hybrid Panel

Jebsen Industrial has also deployed advanced hybrid photovoltaic thermal (PV/T) panels on the rooftop to both heat water for the school and generate electricity that can be fed into the power grid. The hybrid panel consists of an efficient and reliable hot water system based on custom-made flat plate solar panels overlaid with a mono-crystalline solar PV panel. The module is suitable for inclined installations and offers low installation and maintenance costs.


System Monitoring

Students, staff, and visitors to the school will be able to monitor how effective the renewable energy systems are via an LCD display in the school foyer. Using component content management system (CCMS) technology, the LCD display will show the daily power output of the school’s combined systems.

With all the systems now installed, commissioned, and functioning as expected, Jebsen Industrial continues to work with EMSD and Sing Yin School to provide maintenance services and ongoing support.

“Jebsen Industrial’s proven experience and the quality and reliability of our world-class technologies have created a stable and efficient renewable energy infrastructure at Sing Yin Secondary School. We are delighted to have this opportunity to help the school and Hong Kong become more sustainable,” said Lorenz Zimmermann, Director, Jebsen Industrial.

 

For More Information
For more information about Jebsen Industrial solutions for the environmental products and systems industry, please send an email to [email protected] or visit the website at: www.jebsenindustrial.com


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