The project has been completed. With appropriate engine tuning, the system could attain emission levels below those required by the California Air Resources Board for oxides of nitrogen and carbon monoxide. The overall efficiency of the system was 75 percent, which indicates total savings potential of approximately $1,300 per month in the winter and $2,080 per month in the summer, based on relevant utility rates.
To improve grid reliability in the San Onofre Nuclear Generating Station (SONGS) territory and increase market options for small-scale combined heat and power (CHP), this research developed and deployed a low cost automotive engine based micro-distributed generation (DG)/CHP system (with 35 kW max output) using a Mazda Rotary Engine. Initially targeting commercial/industrial laundry facilities, the potential in the SONGS territory is more than 3,700 installation sites at hotels, hospitals, jails/prisons, and laundromats representing an estimated 130-260 MW of electric grid support. This project specifically addressed engine operation and control in a generator application with emphasis on engine availability/reliability and serviceability. Further, the project addressed waste heat recovery to maximize utilization and overall thermal efficiency of the micro DG/CHP system specifically for commercial laundry facilities.
There is potential for the application of the low cost rotary engine micro-DG/CHP system to the more than 3,700 commercial laundry sites in the SONGS territory and to nearly 10,000 commercial laundries in California.
The project develops a system that is compliant with California Air Resources Board’s 2007 and 2013 air emissions standards and can be readily sited.
There is potential for widespread grid support in the SONGS territory in commercial/industrial laundry facilities that can benefit from micro-DG/CHP with an estimated potential of 130-260 MW.
Key Project Members
Mazda North American Operations