ElectraTherm's Green Machine converts low temperature water flows (between 190°F/88°C and 240°F/116°C) into fuel-free, emission free power. The Green Machine output range is from 30-65kWe, based on temperatures and flows.
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The machine has low input requirements for its hot water supply relative to other ORC systems. The Green Machine’s ability to utilize these low temperature water flows allows its implementation in a rapidly expanding number of distributed heat to power applications. The small footprint, skid-mounted design facilitates ease of installation often where current methodologies for heat to power solutions are not feasible.
The Green Machine is scalable to each heat source, allowing connection of multiple Green Machines to a single heat source if enough energy is provided. The Green Machine employs a robust design and the majority of machine components are readily available. Routine maintenance is easy, and with basic ElectraTherm training, technicians with an HVAC and mechanical background can handle required maintenance.
Additionally, The Green Machine’s control system is fully automated, allowing remote control, remote monitoring and off site maintenance.
ElectraTherm’s Green Machine uses a twin screw expander for its power block. The twin screw design is simple and robust. The operating speed of the Green Machine is low, and does not require a gearbox. The twin screw can also run in a “wet” condition meaning the refrigerant does not have to be 100% superheated vapor. This is an advantage over traditional turbine-based expansion devices.
In locations with electricity rates greater than $US .10, a Green Machine can present an attractive return on investment to an end user. In certain geographies and applications, federal, state or even utility incentives may apply. These incentives further accelerate the return on investment.
Dry cooling option results in zero water consumption for condensing.
Fully automated controls system with remote access capability via an internet connection.
NEMA 3R enclosure.Potential to reduce onsite power consumption from the grid.
The Green Machine removes heat from existing heat streams. Further monetary savings can be realized by the reduction of power previously used to cool the heat stream.
This is much simpler than competing technologies which need complex lubrication systems with filters, pumps, oil separators, coolers, etc.
The integrated lubrication will also yield lower maintenance costs.
The Green Machine has a high dynamic output range with a 3:1 turn down ratio. This allows the Green Machine to stay operating over a wide variety of unforeseen and dynamically changing site conditions, maximizing the machines up-time.
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