Micro Combined Heat & Power
Our ecopower system is powered by a liquid cooled internal combustion Marathon Engine fueled by natural gas or propane. Water heated by the engine is pumped through the on-board double-walled heat exchanger and flows to the (optional) buffer tank. A generator is also driven by the engine to create electricity that is used on-site or sent back to the grid.
The buffer tank acts as thermal storage and supplies hot water to the heating circuits as needed. The thermal energy can be used for space heating, domestic hot water or heating a swimming pool. Sensors monitor the temperature in the buffer tank and/or the room and outdoor temperatures. Data from these is fed back to the mircoprocessor in the ecopower so it can maintain a constant set-point temperature.
A complementary boiler is recommended in addition to the ecopower system. The boiler is a backup heat source when the ecopower is down for maintenance or for additional heat if the ecopower falls short during high demand periods.
Cogeneration installations are configured depending upon specific needs.
A typical installation consists of an ecopower® microCHP system, buffer tank, boiler, and hot water tank. The software inside the system integrates the ecopower® with the buffer tank, modulating the system output to match the building's thermal needs. An indirect hot water tank can be hooked up to satisfy water heating needs.
Up to four units can run in parallel to provide more thermal and electrical output. Parallel operation is ideal for larger applications like multi-family buildings, hotels, or any building with a larger thermal need than one unit can supply.
The Marathon Engine
The Power Behind ouR mCHP
Superior construction and the finest durable materials translate into extremely low engine wear
Environmentally responsible design – runs on clean, efficient natural gas or propane fuel
Excellent thermal efficiency and low exhaust emissions
40,000 hours (equating to 1.6 million miles on an automobile engine)
Long 4,000 hour service interval (changing the oil, oil filter, air filter, spark plug and spark plug cable)
Type: 4 Cycle
Compression Ration: 12.8:1
Speed Range: 1200 - 3400 rpm
Cooling: 50% Glycol/Water
Horsepower: 8 HP
Torque: 12.5 ft-lb