“Delivering cleantech energy solutions for a sustainable future, now.”

“Delivering cleantech energy solutions for a sustainable future,

now.”

US Renewable Energy Consumption by SourceDOE/EIA Annual Energy Survey, 2006

1) 24.7 Quads of energy used by industry…of this 20% to 50% is lost in the form of waste heat (DOE)2) Conventional hydroelectric power.3) Fuel ethanol and biodiesel consumption, plus losses and co-products from the production of fuel ethanol and biodiesel. 4) Municipal solid waste from biogenic sources, landfill gas, sludge waste, agricultural byproducts, and other biomass. Through 2000, also includes non-renewable waste (municipal solid waste from non-biogenic sources, and tire-derived fuels).

Quadrillion Btu’s

©ElectraTherm, Inc. 2008

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ElectraTherm’s technology captures this recoverable heat to ElectraTherm’s technology captures this recoverable heat to drive generators that make electricity with zero emissions.drive generators that make electricity with zero emissions.

At the heart of all ET’s

systems is a positive

displacement twin screw

expander with the “N” Rotor

Profile - Patented by City

University, London and

licensed to ElectraTherm.

Twin Screw Expander

4©ElectraTherm, Inc. 2008

HIGH PRESSURE LIQUIDHIGH PRESSURE LIQUID LOW PRESSURE LIQUIDLOW PRESSURE LIQUID

Under pressure, the vapor is

forced through the screw expander,

turning it to spin an electric generator

Under pressure, the vapor is

forced through the screw expander,

turning it to spin an electric generator

<< COLD SOURCE IN<< COLD SOURCE IN

COLD SOURCE OUT >>COLD SOURCE OUT >>

HEATED PRESSURIZED VAPORHEATED PRESSURIZED VAPOR LOW PRESSURE VAPORLOW PRESSURE VAPOR

<< HEAT SOURCE OUT<< HEAT SOURCE OUT

HEAT SOURCE IN >>HEAT SOURCE IN >>

The working fluid is pumped

to higher pressure and

returned to the evaporator to

repeat the process

The working fluid is pumped

to higher pressure and

returned to the evaporator to

repeat the process

The vapor is cooled and condensed back into a

liquid in the condenser

The vapor is cooled and condensed back into a

liquid in the condenser

Surplus heat captured by the evaporator is used to “boil” the working fluid into a vapor

Surplus heat captured by the evaporator is used to “boil” the working fluid into a vapor

ET’s Products are:

innovative economical reliable green available now

©ElectraTherm, Inc. 2008 7

8©ElectraTherm, Inc. 2008

ET Power Systems

7’

Scalablefrom 30kW – 500kW

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10©ElectraTherm, Inc. 2008

Running in parallel, ET systems can be part of  a larger generating solution where individual units can be taken off-line without affecting the performance of any other unit 

or the system as a whole. 

Feed Pump 

Generator Expander 

Heat Pressurized Vapor 

Refrigerant Loop 

Receiver Tank 

C o n d e n s e r  

Low Pressure Liquid 

Expansion of Pressurized Vapor Produces Mechanical Power 

Generator Rotation Produces Electricity 

Low Pressure Vapor 

Evaporator  

Reinjection well

ElectraTherm Waste Hest Generator as a Small Geothermal Power Plant

11©ElectraTherm, Inc. 2008

ElectraTherm Waste Hest Generator as a Bottom Cycle to Existing Geothermal Power Plant

Expander & generator

Turbine Generator

= more electricity

= electricity

Condenser Cooling TowerReceiver

TankFeed Pump

Evaporator

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ET’s fuel-free, emission-free power systems are available now.

Recoverable heat: ≥200°F liquid, ≥400°F gas, 400°F – 1000°F exhaust

Cooling Source: water <80°F, air <90°F

Management with a desire to: • reduce emissions to power ratios,• increase plant efficiencies,• net greater profit.

15©ElectraTherm, Inc. 2008

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ET Power Systems:• Recycle wasted energy to make electricity.• Are fuel & emissions free.• Are scalable in size & flexible with heat and condensing • Reduce emissions to output ratios.• Increase power output to fuel ratios.• Payback in 2 years, approx.• Are modular and require a small footprint.• Tie in to existing heat & cooling flows without interrupting

current industrial processes or electrical production.