Sign in or 
| Version | User | Scope of changes |
|---|---|---|
| Dec 8 2008, 8:03 PM EST (current) | jimmiller5417 | |
| Dec 8 2008, 8:01 PM EST | jimmiller5417 | 1733 words added |
Changes
Key: Additions Deletions
INFINITY TURBINES CO GEN
Youtube video clip: http://www.youtube.com/watch?v=MFBnGCm5QKs&eurl=http://www.worldofcogeneration.com/
Mr. Greg Giese Energy and Infinity Turbine LLC
P.O. Box 5617
Madison, WI 53705 USA
TEL: (608) 238-6001 FAX (240) 525-2445 http://infinityturbine.com/ORC/Waste_Heat_Turbine.html
greg@infinityturbine.com
Organic Rankine Cycle
Main article: Organic Rankine Cycle The organic Rankine cycle (ORC) uses an organic fluid such as pentane[2] or butane[3] in place of water and steam. This allows use of lower-temperature heat sources, such as solar ponds, which typically operate at around 70–90 °C[4]. The efficiency of the cycle is much lower as a result of the lower temperature range, but this can be worthwhile because of the lower cost involved in gathering heat at this lower temperature. Alternatively, fluids can be used that have boiling points above water, and this may have thermodynamic benefits. The Rankine cycle does not restrict the working fluid in its definition, so the inclusion of an "organic" cycle is simply a marketing concept that should not be regarded as a separate thermodynamic cycle. http://en.wikipedia.org/wiki/Rankine_cycleOrganic Rankine Cycle
The Global Energy INFINITY TURBINE (turbogenerator) operates using the Organic Rankine Cycle (ORC). The Organic Rankine Cycle (ORC) is similar to the cycle of a conventional steam turbine, except for the fluid that drives the turbine, which is a environmentally friendly low boiling point organic fluid which allow the system to run efficiently on low temperature heat sources to produce electricity in a wide range of power outputs.
The Cycle
The environmentally friendly organic working fluid is turned into vapor by application of a heat source in the evaporator. The organic fluid vapor expands in the turbine and is then condensed using a flow of water in a shell-and-tube heat exchanger (alternatively, ambient air can be used for cooling). The condensate is pumped back to the evaporator thus closing the thermodynamic cycle. Heating and cooling sources are not directly in contact with the working fluid nor with the turbine. The condenser can use ground source geothermal and air cooled for added efficiency.
For high temperature applications such as Combined Heat and Power (CHP) biomass-powered boilers, high temperature thermal oil is used as a heat carrier and a regenerator is added, to further improve the cycle performance.
BROCHURE: http://www.infinityturbine.com/pdf/Infinity_Turbine_Brochure.pdf
http://en.wikipedia.org/wiki/Organic_Rankine_Cycle
----Inline Attachment Follows----- Here is some general information:
Heat Rate: In general waste heat is recovered via thermal oil, water
or glycol solution. Our ORC systems can use heat in the range of
70-120 C input heat. If it is lower than 100 deg C, then figure on
42,000 BTU / kWe. The heat rate is better as temperature goes up.
Our standard system is the R 245fa (using Genetron) system which
operates between 80-120 C. This represents 8-11 percent efficiency.
Input Fluid: Using water, glycol or thermal oil (for higher temps)
you can expect a flow rate of 2-3 gpm (11.4 liters/min) per rated kW.
So a 30 kW rated system needs around 90 gpm (1,026 liters/min).
Expect a temperature drop of 15-20C between the input and exit of the
preheater/evaporator.
Condenser: The standard systems use a water cooled condenser. Expect
a temperature increase of 10C from the input and exit water flow.
Standard Systems: Our standard systems are currently the Infinity
Turbine 30 Series platform and the Infinity Turbine 250 Series
platform.
Infinity Turbine 30 Series Platform: Sizes range from 30 kw, 60 kw and 90 kw.
The 30 Series Platform dimensions:
Width - Base Overall: 7 ft. 4.5 inches (2247 mm)
Length - Base Overall: 8 ft. 3 3/8 inches (2523 mm)
Height: 6 ft. 7 1/4 inches (2013 mm)
Approximate Weight: 2,500 lbs.
Refrigerant: R245fa
Infinity Turbine 250 Series Platform: Sizes range from 250 kw and 500
kw. Dimensions: Length 16' 8", Width 7' 0"; Height 7' 6". Fits in
standard 20 foot shipping container. Refrigerant: 134a or 245fa
depending on application.
-
Larger systems by numbering up the 250 series, which are the same
footprint of a standard 20 and 40 ft. shipping container.
Here is our general information:
Our Organic Rankine Cycle (ORC) Infinity Turbines can use any thermal
fluid to power the system evaporator (which in turn evaporates the
high molecular mass fluid - an environmentally friendly refrigerant).
As for your waste heat, we recommend you run that through a heat
exchanger that has thermal oil as the fluid, which we can then run
into our system.
How it works: The organic Rankine cycle has three steps -
(a) Your heat is provided in the form of thermal liquid (water, glycol
or oil). If you already have heat exchanger equipment, then you can
just use water, glycol, or a better alternative is thermal oil. If
you don't have a heat exchanger to capture your waste heat, then we
recommend a hot air to thermal oil exchanger (they are available
everywhere). The source of the heat can be geothermal, engine waste
heat, gas turbine heat, solar collector, industrial waste heat, steam,
etc. Your heat source in the form of a liquid then goes through the
preheater and evaporator heat exchanger. This is where the working
fluid for the ORC turbine gets vaporized and pressurized. The heat
source should be at least 80 deg C. Once it passes through the
evaporator, it comes out at about 10-20 deg C cooler. This can then
be used for additional process heat (CHP hot water or chiller).
(b) The working fluid for the ORC closed system is pressurized by the
evaporator, then is expanded by our turbogenerator. This produces the
shaft horsepower to turn the generator and produce electricity. Of
course, you can have the turbine power a generator, pump, or whatever
you require.
(c) The expanded working fluid then goes through a condenser to
return the vapor to a liquid state. The condenser requires some
method of cooling fluid, typically water which is provided from a
cooling tower, or ground based geothermal (the ground has a constant
temperature of 15 deg C or less temperature). The liquid is then
pumped back into the evaporator unit to complete the cycle. Only
environmentally friendly working fluid is used in the system.
So, the basic system has a evaporator, turbogenerator unit and
condenser. The temperature difference between the evaporator and
condenser must be at least 125 deg F, or about 65 deg C.
Our heat rate is about 42,000 BTU / kilowatt electricity which is
about 8-11 percent efficient. This system is geared towards waste heat
- so it's free power.
It's possible to use steam or steam condensed hot water to put into
the evaporator (boiler) to run the system if that is available on
site.
Systems
We will be happy to develop other ORC units, but currently our
standard is the following (note that the minimum input temperature is
70 deg. C and max on our standard system is 110 C - higher temps are
available for custom systems). Pricing is based on lower temperature
systems with an induction generator and 60 hz. Higher temperature,
50hz and synchronous options are available at extra cost:
(1) 30 kw Infinity Turbine: Standard unit is skid mounted. The 30 kWe
will be priced around $60,000 USD each. Air cooled condenser is
$15,000 option.
(2) 60 and 90 kw Infinity Turbine: Standard unit is skid mounted. Air
cooled condenser optional. For each 30 kw, add-on $40,000 USD.
(3) 250 kw Infinity Turbine: Standard unit is skid mounted.
Available option in one 20 ft. ocean shipping container. 164-220 F
input (70-110 deg C) at about 530 GPM or 2006 liters/minute. Air
cooled condenser optional. Base pricing for standard configuration is
$300,000 USD FOB mfg.
(4) 500 kw Infinity Turbine: Standard unit is skid mounted. Available
option in one 40 ft. ocean shipping container. Air cooled condenser
optional. Price for base unit: $600,000 USD FOB mfg.
Note: These are the power skid units, and include a heat exchanger
evaporator, turbine, induction generator, condenser heat exchanger,
recirculation pump and basic grid connect switchgear. Available in 50
hz or 60 hz. All skid mounted or as an option into a shipping
container.
Order Terms: 40 percent down, 40 percent at 6 weeks, balance at time
before shipment to customer.
Order Time: From time of deposit on equipment the mfg. time is around
11-16 weeks depending on orders in process.
To run this unit, you will need to provide hot fluid (water, oil,
etc.) to run through the evaporator heat exchanger. You will also
need condenser cold fluid, which may be provided by an air cooling
tower, ground source geothermal, or cold water from another source.
If you have a engine generator set and want to use the waste heat in
our ORC equipment, you can use the coolant liquid directly, however
you must convert the exhaust heat into a thermal liquid. To do this
you will need a heat recover unit. There are very efficient (up to 95
percent) units from the following:
Sven Persson <sven@airec.se>
Website: http://www.airec.se/
For example: QSK60-G4 Cummins QSK60 Series Diesel Generator Set
1600KW/1875KVA (1875KVA-2250KVA)
Heat Rejection to Coolant: 850 kWm x 3412 kWm/btu / (30,000 btu/kWe)
= 97 kWe available ORC power production
Heat Rejection to Exhaust: 1,180 kWm x 3412 kWm/btu / (30,000 btu/kWe)
x 95 percent efficiency = 127 kWe available ORC power production
Total Waste Heat to Power ORC Production: 224 kWe
Heat Exchanger from Airec: AirCompact 70 - 160/C
Price Each For Heat Exchanger: Euro 4,500 FOB Sweden.
Our specialty is distributed energy and developing power systems for
business that have unique power opportunities by utilizing waste heat.
Please let me know if you have any additional questions.
Best Regards,
Greg Giese
Global Energy and Infinity Turbine LLC
TEL(608) 238-6001
FAX(240) 525-2445
http://www.globalmicroturbine.com
http://www.infinityturbine.com
---------- Available for Sale ---------
A. 5-12 kw ORC System - Experimental Kit: Turbine, generator,
evaporator, condenser, feed pump. Hybrid disc turbine design. Variable
flow is optional and extra. R134a will actually perform slightly
better but R245fa can run a slightly higher temperature. Price:
$20,000 FOB USA. If you order 5 or more the price is $12,500.
B. ORC Solar Publications: Via download in .pdf format. $500
C. ORC Publications - Entire Library: Via download in .pdf format. $5000
D. Heat Transfer Additive - increase heat transfer of your working
fluid or solar thermal panel fluid from 50-200 percent: Research and
Development papers via download in .pdf format. $5000
E. Heat Transfer Additive: Available shortly in quantities of 1
liter powder, or in fluid.
