Geothermal Electricity
Generate Electricity from
Geothermal, District heating & CO-PRODUCED FLUIDS Green Machine ORC
Small-scale power generation from low temperature geothermal
Generate Electricity from...
Geothermal & co-produced fluids
Until recently, geothermal power plant development focused on multi-megawatt opportunities that required deep drilling, large capital expenditures, and multi-year time lines to implement. However, ElectraTherm’s heat-to-power technology employs easily accessible, low-temperature geothermal flows to make electricity. ElectraTherm is the world leader in low-temperature, heat-to-power technology. The majority of geothermal resources produce low temperature hot brine flows (less than 210˚F / 100˚C), and ElectraTherm’s Green Machine can operate on resource temperatures as low as 170˚F / 77˚C. Additionally, tens of thousands of oil & gas wells co-produce millions of barrels of hot water per day, at temperatures ideal for making power with ElectraTherm’s Green Machine. That hot water has value as a free, renewable “fuel” source to generate clean power.
ElectraTherm partnered wi Florida Canyon Mine to gen
ElectraTherm
INTRODU The Green Machine generates power from low temperature geothermal in Oradea, Romania.
Geothermal Balance of Plant Easily transported and installed at remote geothermal sites, turnkey Green Machine systems are robust and reliable and create power from lower temperatures and smaller flows than alternate ORC technologies. The vast number of low temperature geothermal resources around the world now have value as a source of clean, renewable energy. Primary Heat Exchanger
Green Machine with Liquid Loop Radiator
Geothermal heat available for other uses
Production well with pump
Re-injection well
Additional Downstream Heat Uses • Preheat make-up air to ventilation systems • Radiant floor heating • Swimming pools • Drying processes
• Domestic hot water • Driveway ice melting • Cattle trough warming • Aquaculture
Generate Electricity from...
District heating
Energy efficiency measures on district heating and cooling applications have become increasingly important in Europe where heating represents the largest energy end-use. According to the Euro Heat and Power Association, heating represents approximately 50% of final energy consumption in Europe. The Green Machine innovative solution replaces dated technologies with the best clean, renewable efficiency option for district heating systems in the world today.
ith the US Department of Energy and nerate geothermal power in Imlay, Nevada.
UCES
Organic Rankine Cycle technology optimized for Geothermal, District Heating & Co-Produced Fluids
District Heating Balance of Plant ElectraTherm Green Machines can be deployed on a district heating system to generate clean energy and increase site efficiency.
120째C
ElectraTherm commissioned 10 Green Machine 4400s in Slovakia on a centralized district heating system.
116째C
ORC
Low temperature heating application or coolers
LOOP Primary Heat Exchanger 105째C
ORC
LOOP 95째C
Low temperature heating application or coolers
Configurations Geothermal configurations Parallel configuration
Diagram 1
ORC
LOOP 130°C
Series configuration
Low temperature heating application or coolers
Diagram 1 shows that with sufficient flow, two or more Green Machines can make power from a single geothermal resource.
110kWe
116°C
Primary Heat Exchanger
101°C
Diagram 2 shows that two or more Green Machines can be placed in series, with residual heat from the first ORC feeding heat to the next in line.
Low temperature heating application or coolers
ORC
LOOP 110kWe
Combination configuration Diagram 3 below shows a combination of parallel and serial configurations which optimize resources for maximum electrical output.
Diagram 2
ORC
LOOP 110kWe
Primary Heat Exchanger
101°C
ORC
91°C
Low temperature heating application or coolers
Multiple Green Machines offer redundancy and flexibility. Capable of following a variable heat load, Green Machines can turn on or off and use variable working fluid phases to optimize power produced from fluctuations in available heat. As one machine receives maintenance, the balance of Green Machines continue to produce clean, renewable power.
116°C
Low temperature heating application or coolers
130°C
LOOP 75kWe
Diagram 3 64°C, 40 l/s 40 l/s
110°C, 10 l/s
110°C, 10 l/s
GM 6500
GM 6500
Gross: 92kWe Net: 88kWe
85°C
85°C
71°C
85°C
GM 4200 Gross: 21kWe Net: 20kWe
85°C
Gross: 21kWe Net: 20kWe
GM 6500
Gross: 45kWe Net: 43kWe
71°C
GM 4200
Gross: 92kWe Net: 88kWe
GM 6500
Gross: 45kWe Net: 43kWe
71°C
GM 6500
Gross: 92kWe Net: 88kWe
GM 6500
Gross: 45kWe Net: 43kWe
110°C, 10 l/s
GM 6500
Gross: 92kWe Net: 88kWe
GM 6500
Production Injection Well Well
110°C, 10 l/s
Gross: 45kWe Net: 43kWe
71°C
GM 4200 Gross: 21kWe Net: 20kWe
GM 4200 Gross: 21kWe Net: 20kWe
TOTAL NET POWER : 604KWE
Geothermal, Co-Produced Fluids & District Heating CO-PRODUCED FLUID configuration As a byproduct at oil and gas wells, hot water has previously been considered a nuisance. Green Machines use co-produced water as fuel to make clean, renewable power. After removing geothermal brine from oil and gas, hot water is readily available to produce electricity in a Green Machine ORC - for on-site use or for sale to the grid. Feed-in tariffs for renewable energy enhance the revenue opportunity in many locations.
DISTRICT HEATING configurations
Diagram 4
Green Machine With Liquid Loop Radiator
Oil
Primary Heat Exchanger
ORC
LOOP
Geothermal Heat Available For Other Uses Production Well With Pump
Re-injection Well
Diagram 5
Radiator with a Payback
116°C
ORC
Primary Heat Exchanger
Up to 70°C
LOOP
From 10°C
- Or -
Low temperature heating application or coolers
Diagram 5 illustrates how the Green Machine on a district heating network produces electricity while consuming heat so hot water flows reach temperatures suitable for use in the system.
Incinerator Feed line 86°C to 105°C
Reduce Heat in a Serial Configuration
116°C
ORC
105°C
Low temp heating application or coolers
Low temp heating application or coolers
LOOP 95°C
Low temp heating application or coolers
85°C
Feed line 117°C @ 90 l/s
Diagram 7
116°C
District Heating
22 l/s
105°C
ORC
LOOP
Up to 70°C From 10°C
Low temperature heating application or coolers
The Green Machine can use the heat for electricity production when there is less heating demand, thereby optimizing the overall network profitability.
ORC
LOOP
Feed line 120°C @ 90 l/s
Diagram Seven shows how the Green Machine can take heat from the main stream to produce electricity while keeping the district heating network in almost identical condition.
ORC
LOOP
Feed line of DHN
A Green Machine can produce electrical power from a district heating network with minimal impact to the temperature.
Diagram 6
Return Line
Use Feed or Return Lines in District Heating Networks to Produce Electricity
District Heating
Heat from geothermal or from boiler/incinerator
In Diagram Six three Green Machines in series lower 116°C flows to 85°C. The Green Machine can reduce temperatures to as low as 64°C for use in other low temperature applications.
Return line 70°C to 90°C
Green Machine Products Green Machine 4200 - Up to 35kWe
4200 Stand Alone • Dimensions: 2.4 x 2 x 2.3 m • Weight: 3,600 kg / 7,920 lbs • MSRP: $165,816 Multiple condensing options: Sound attenuation, dual heat stream, startup and commissioning, shipping to remote areas may incur additional charges.
4200-FL 40 ft. ISO Frame • Dimensions: 12 x 2.4 x 2.9 m • Weight: 9,400 kg / 20,680 lbs • MSRP: $247,263 Turnkey ORC Systems include: 40ft. ISO framing, working fluid, liquid loop radiator and pertinent piping & pumps, minimal engineering (no concrete foundation required), 50 & 60hz generators • Shipping (customs duties not included) • Plug and play
Green Machine 4400 - Up to 65kWe
4400 Stand Alone • Dimensions: 2.4 x 2 x 2.3 m • Weight: 3,600 kg / 7,920 lbs • MSRP: $192,953 Multiple condensing options: Sound attenuation, dual heat stream, startup and commissioning, shipping to remote areas may incur additional charges.
4400-FL 40 ft. ISO Frame • Dimensions: 12 x 2.4 x 2.6 m • Weight: 9,400 kg / 20,680 lbs • MSRP: $292,038 Turnkey ORC Systems include: 40ft. ISO framing, working fluid, liquid loop radiator and pertinent piping & pumps, minimal engineering (no concrete foundation required), 50 & 60hz generators • Shipping (customs duties not included) • Plug and play
Green Machine 6500 - Up to 110kWe
6500 Stand Alone • Dimensions: 2.4 x 1.8 x 2.2 m • Weight: 3,600 kg / 7,920 lbs • MSRP: $289,429 Multiple condensing options: Sound attenuation, dual heat stream, startup and commissioning, shipping to remote areas may incur additional charges.
6500-FL 40 ft. ISO Frame • Dimensions: 12 x 2.4 x 2.6 m • Weight: 10,450 kg / 22,990 lbs • MSRP: $409,159 Turnkey ORC Systems include: 40ft. ISO framing, working fluid, liquid loop radiator and pertinent piping & pumps, minimal engineering (no concrete foundation required), 50 & 60hz generators • Shipping (customs duties not included) • Plug and play
roducts,
Performance Tables and Heat to Power Applications
Green machine 4200, 4400 & 6500
Performance table Hot water input temp range
Hot Water Input Parameters
Thermal input range Flow rate range Cooling water input temp range
Water Cooled Condensing Parameters
Heat rejected to cooling water range Cooling water flow rate
LLR / Dry Cooler
Ambient air temp Heat rejected to condenser
4200 <35kWe
4400 <65kWe
6500 <110kWe
˚F
170 - 240
170 - 240
170 - 252
[ ˚C ]
[ 77 - 116 ]
[ 77 - 116 ]
[ 77 - 122 ]
MMBTU/hr
1.02 - 2.22
1.02 - 2.9
1.2 - 5.4
[ kWth ]
[ 300 - 650 ]
[ 300 - 860 ]
[ 330 - 1600 ]
gpm
50 - 200
50 - 200
100 - 350
[ l/s ]
[ 3.2 - 12.6 ]
[ 3.2 - 12.6 ]
[ 6.4 - 22.1 ]
˚F
40 - 150
40 - 150
40 - 150
[ ˚C ]
[ 4 - 65 ]
[ 4 - 65 ]
[ 4 - 65 ]
MMBTU/hr
0.9 - 2.0
0.9 - 2.7
1.1 - 5.1
[ kWth ]
[ 270 - 600 ]
[ 270 - 795 ]
[ 320 - 1500 ]
gpm
<220
<220
<350
[ l/s ]
[ <13.9 ]
[ <13.9 ]
[ <22.1 ]
˚F
<100
<100
<100
[ ˚C ]
[ <38 ]
[ <38 ]
[ <38 ]
MMBTU/hr
0.9 - 2.0
0.9 - 2.7
1.1 - 5.1
[ kWth ]
[ 270 - 600 ]
[ 270 - 795 ]
[ 320 - 1500 ]
GENERATE ELECTRICITY FROM...
Heat to power applications ElectraTherm’s Green Machine generates electricity from various heat sources, including: Stationary Engines
Biomass/Biogas
Process Heat & Incinerators
Boilers & Process Heat
Oil & Gas, Geothermal
Solar Thermal
The Green Machine ORC ElectraTherm offers a full range of ORCs, including 35kW, 65kW and 110kW solutions available as stand alone or in series. ElectraTherm’s award-winning Green Machine utilizes low grade heat sources to make electricity with: • No fuel requirement • Minimal footprint • Zero emissions
• 20-year design life • Low maintenance • Attractive payback
Standard Features and Specifications
• Fully automated controls with remote monitoring and operating capabilities • Induction generator with power factor correction for easy grid connection • Simple maintenance, with no gearbox or oil changes • NEMA 3R / IP 54 compliant enclosure for outdoor use • Sound attenuated option: <72db at 1 meter • CE certified
• Brazed plate heat exchangers • Robust, Twin Screw Expander power block • Patented in-process lubrication
Twin Screw Expander
How It Works
ElectraTherm’s waste heat-to-power system uses a closed loop Organic Rankine Cycle (ORC).
2
=
3 Twin Screw Expander
Generator
Evaporator
ORC
Condenser 4
working fluid
LOOP
1 Pump
Steps in the Process 1) Working fluid is pumped to higher pressure and transferred to the evaporator. 2) Heat captured by the evaporator boils the working fluid into pressurized vapor. 3) The vapor flows through the twin screw expander, spinning an electric generator to produce power. 4) The vapor is cooled and condensed back into a liquid in the condenser to repeat the cycle.
ElectraTherm, Inc. is a clean energy company headquartered in Reno, Nevada. ElectraTherm’s product, the Green Machine, generates fuel-free, emission-free power from low temperature waste heat using the Organic Rankine Cycle (ORC) and patented technology. Our machines are modular, robust, low maintenance power generators.
©2015 ElectraTherm | USA Contact +1 775 398 4680 | EMEA Contact: +33 6 83 189316 amendesnazare@electratherm.com | www.electratherm.com ET-005 GBAPP_A4 2015_2/19