ORNL and Enginuity researchers proved that a micro combined heat and power prototype, or mCHP, with an opposed piston engine can achieve more than 93% overall energy efficiency. The environmentally friendly mCHP can replace a backup generator or traditional hot water heater. Credit: ORNL, U.S. Dept. of Energy
- Energy Sciences
- Building Technologies
91做厙 researchers, in collaboration with , demonstrated that a micro combined heat and power prototype, or mCHP, with a piston engine can achieve an overall energy efficiency greater than 93%. Designed to replace a backup generator or traditional gas hot water heater, the mCHP switches between natural gas, hydrogen or biogas and combines battery storage and solar energy.
Researchers an mCHP that uses a four-stroke opposed piston engine. Its environmentally friendly and cost-effective because heat that would otherwise be wasted is captured and reused to provide thermal energy at a small scale for a building in a single process. This allows for a higher efficiency compared to conventional single-functional equipment.
Results exceeded expectations, said ORNLs Zhiming Gao. Even without providing heat, in lean burn mode, this mCHP showed more than 35% electrical energy efficiency.
This innovation could accelerate use in small residential and commercial buildings for remote and underserved communities.
