Canadian Solar Technologies Inc. (CST) is a high-tech provider of evacuated tube solar collectors manufactured by Beijing Sunda Solar Energy Technology Co. Ltd (Sunda), a highly acclaimed solar manufacturer.

These evacuated tube solar tubes are unique to Canada’s solar energy market. They utilize solar heat transfer technology designed by Daimler-Benz Aerospace Group, providing dependable and affordable means of solar collection.

At CST, we are actively engaged in promoting alternative energy resources and marketing heat pipe evacuated solar collectors and other types of solar heating technologies in Canada, including solar controllers and solar pump stations by Solarnetix Inc.

With extensive technical support from our manufacturers, we provide leading high-end technology products for thermal solar energy utilization – evacuated tube collectors, solar controllers and solar pump stations.

Sunda’s modern manufacturing plant boasts production capacities of over 500,000 tubes per year. As the world’s largest heat pipe vacuum tube manufacturer, and the Company’s high quality guarantee and economies of scale, Sunda is able to supply the most competitive solar collector throughout the world.

It is CST’s intent to provide the highest level of customer satisfaction with our products, technology and service. Whether residential, commercial or industrial applications, CST, with support from our manufacturers, offers qualified technical support in planning solar thermal systems.

About Solar Technology

Evacuated Tube Technology

Research and development for the Seido line of evacuated tube using heat pipe technology was designed by the Daimler-Benz Aerospace Group.

An evacuated-tube collector contains several individual glass tubes, each containing an absorber plate bonded to a heat pipe and suspended in a vacuum. The pipe transfers the heat efficiently to a condenser through the top of the tube. The condensers are clamped to heat exchange blocks in a well-insulated manifold. The special coating on the absorber absorbs more than 92% of the arriving radiation, but radiates less than 8% back to the environment.

Heat transfer from the absorber to the fluid circuit is performed by the “heat pipe”. A heat pipe is a closed system, evacuated and charged with a small amount of water before it is sealed. The absorber imparts heat to this water, causing it to evaporate. The steam rises to the upper end of the heat pipe where it transfers heat to the fluid circuit via a metallic conduction bridge. Being a “dry” connection, fluid in the heating circuit does not flow through the collector.

The absorber and heat pipe are mounted in a sealed evacuated glass tube, cutting the heat looses via conduction and convection. The stable vacuum assures that the collector performs at low outside temperatures and protects the absorber against the environment.

Benefits

Highly efficient vacuum tube collectors are the right choice when top performance is in demand – throughout the entire year. By preventing air circulation (convection), the vacuum provides efficient insulation and simultaneous protection from environmental influences. This offers constant high efficiency. Their maximum attainable temperature of 250°C, makes vacuum tube collectors an excellent option, and desirable to support traditional heating systems.

• Reduces operational costs
• Reduces air pollution
• Offsets greenhouse gases
• Utilizes renewable energy resources
• Installs easily
• Averages a 20 year life span
• Provides high efficiency heat energy output
• Offers dual use potential (hot water and air heating)

Canadian Solar Technologies has the ability to work with you in the design of your solar thermal system. Our knowledge base will optimize a solution for your solar heating system requirements. Depending on the application, we would be pleased to work with you.

Services

• Feasibility Assessment
• Energy Analysis
• Engineering and Design
• Product Sales and Distribution
• Contract Installations

Typical Applications

• Domestic hot water heating (Residential, Commercial, Industrial)
• Pool and/or Hot Tub heating
• Space air heating
• Air conditioning
• Combinations of the above