Clean Power Signs Steam and Heat Recovery Engine Development Agreement With Voith Turbo GmbH & Co. KG
|Basic components of the CESAR system. Click to enlarge.|
Canada-based Clean Power Technologies Inc. (CPT), developer of a waste-heat powered steam hybrid system (CESAR, Clean Energy Storage and Recovery, earlier post), has signed a collaboration agreement with Voith Turbo GmbH & Co. KG to develop steam and heat energy recovery engines for Clean Power’s proprietary heat recovery technology for refrigeration trailers for the grocery market.
CESAR uses a heat exchanger to capture waste energy from a primary engine, which is then stored in the form of steam in an accumulator, for on-demand use either in the same primary engine, or in a secondary vapor engine. Power can be produced solely by the secondary vapor engine even after the primary combustion engine has shut down. The technology can provide up to 40% better fuel efficiency and a corresponding reduction in emission levels depending upon the application, according to the company.
Under the terms of the collaboration agreement, Clean Power and Voith will analyze data from the testing of an existing refrigeration engine, results from which will be used to build and test a new engine that incorporates Clean Power’s heat recovery technology. Clean Power is currently collecting initial data from an existing refrigeration engine at its headquarters in Calgary, Canada.
There are more than 7 million refrigerated trailers in the US and about 2.5 million in the EU. The UK alone has approximately 40,000 refrigerated trailers while the overall global truck market is growing at 8% per year.
Voith is a multi-national company with significant interest in the development of expand in engine and braking systems. As part of its own drive systems and components development program, Voith Turbo GmbH & Co. KG has already developed hybrid systems, waste recovery systems and expansion engines based on the internal combustion engine which are used on the road, on rail, on water and in other industries.
Earlier in August, CPT signed a Memorandum of Understanding with East West Express Inc., a trans-Canadian freight trucking company, to work together with the ultimate objective of making the East West truck fleet more energy-efficient by installing the CESAR system to generate steam power for both motive and auxiliary power. Under the terms of the MOU, East West will provide Clean Power a Road Load Data Collection Vehicle. From this data Clean Power will refine the design and packaging of its exhaust heat capture, accumulator and steam engine to ensure that, together, they meet or exceed the specifications of the existing diesel engine system.
In 2006, CPT began testing the CESAR on a Mazda RX8 passenger vehicle engine, with trials on a second identical engine commencing later that year. The RX8 uses a twin-chamber Wankel rotary engine. In the CPT tests, one chamber is powered by gasoline, the other can be powered either by steam or by gasoline. In June 2007 testing also began on a Caterpillar C15 diesel engine to explore applications, such as auxiliary power and trailer refrigeration, within the industrial vehicle and truck industries. Testing on the CESAR process began in late October 2007.