Micro Combined Heat & Power
An Efficient Clean Energy Solution
mCHP BASICS

Our mCHP 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 mCHP so it can maintain a constant set-point temperature.
A complementary boiler is recommended in addition to the microCHP. The boiler is a backup heat source when the unit is down for maintenance or for additional heat if the system falls short during high demand periods.
APPLICATIONS
CONFIGURATIONS

Cogeneration installations are configured depending upon specific needs.
Single Operation
A typical installation consists of a microCHP system, buffer tank, boiler, and hot water tank. The software inside the system integrates the unit 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.
Parallel Operation
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.
Component Descriptions
INSIDE THE mCHP

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Marathon Engine
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Heat Exchanger
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Power Inverter
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System Controller
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Engine Controller
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Control Interface
The Marathon Engine
The Power Behind ouR mCHP
ENGINE FEATURES
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Superior construction and the finest durable materials translate into extremely low engine wear
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Environmentally responsible design – runs on clean, efficient natural gas or propane fuel
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Excellent thermal efficiency and low exhaust emissions
ENGINE LIFE
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40,000 hours (equating to 1.6 million miles on an automobile engine)
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Long 4,000 hour service interval (changing the oil, oil filter, air filter, spark plug and spark plug cable)
ENGINE SPECS
Type: 4 Cycle
Cylinders: 1
Displacement: 272cc
Compression Ration: 12.8:1
Speed Range: 1200 - 3400 rpm
Cooling: 50% Glycol/Water
Horsepower: 8 HP
Torque: 12.5 ft-lb
For spec sheet, marketing materials or questions, contact us!