PRODUCT SPECIFICATIONS

Product Size Range

Customized for your needs

TAS Energy G2P units range from 1 to 20 megawatts for individual units. These units are designed and constructed for flexibility according to our customer’s needs, and can be ‘stacked’ or used in multiples.

Environmentally Safe Working Fluid

Nonflammable

TAS Energy’s G2P uses a family of refrigerants, including R134A and R234FA as the cycle working fluids. Unlike our competitors, this choice of working fluids removes the immediate risk of flammability as both R134A and R234FA are non-flammable. Additionally these refrigerants are approved by the EPA as environmentally safe. It is the same family of refrigerants we have been working with since 1999 in all of our highly efficient cooling projects totaling nearly 1,000,000 tons worldwide.

• R134a is not listed by or subject to the State of Nevada, Division of Environmental Protection, Chemical Accident Prevention Program (CAPP) - Permitting Requirements, eliminating cost and time delays.
• R134a is non-flammable. This eliminates the need for the fire protection system which is required for the use of hydrocarbon based binary power plants. As a result, insurance costs will be less since the plant has no flammable materials.
• As of January 2009, all employees working in facilities with flammable fluids are required to be provided with and wear non-flammable cover garments.
• R134a is non-toxic and non-corrosive, unlike the ammonia which is proposed for use in other high-efficiency binary power cycles. R-134a eliminates a safety hazard for plant personnel, permitting costs and delays with state and federal agencies, and the concerns of those communities adjacent to facilities with a large ammonia inventory.
• The overall higher environmental and safety benefits of the R134a have a benefit beyond the reduced capital cost and permitting effort. With no flammability and no toxicity, the prospect of reduced staffing is presented.
• For a simple process design with few rotating components, the potential for reduced staffing and cost savings is a reality.

Mission Possible: Low Temperature Development

Through TAS Energy’s development of a range of new high efficiency binary expanders applied to the Organic Rankine Cycle, lower than traditionally thought of as “commercially viable resource temperatures” can now be utilized for geothermal and waste heat applications. Generally not considered viable for utility scale deployment, TAS has proven that electricity generation from unconventional geothermal resources of 205°F, utilizing the first commercial use of a low temperature bottoming cycle at a geothermal flash power plant, are now possible.

Minimizing Risks, Maximizing Profits

Geothermal developers must have cost effective and flexible design solutions, while simultaneously mitigating the risks. TAS Energy’s innovative approaches have less environmental impact than current geothermal conversion technology, a higher brine utilization rate yielding more net electrical output per gallon of produced fluid, and incorporates the strategy of returning 100% of extracted fluid to the reservoir; reducing or eliminating associated resource decline, and risk due to heat rejection recirculation.

Specially Designed Turbo Expanders

For the larger geothermal projects above 5.0 MW’s, TAS includes a highly advanced radial expander. This expander runs on iso-butane and iso-pentane as working fluids. For geothermal and waste heat projects 5.0 MW and below TAS has developed an axial expander. The turbine design is focused mainly on geothermal and waste heat applications using R134a and R245fa and as the primary working fluid, to cover gross power output from 500 kW – 5.0 MW output with temperatures from 200 – 500°F (97 - 260°C).

 Air Cooled or Water Cooled Condensers

Take your Pick

Water cooled (or wet cooled as some know it) is a standard everyone understands. However, make-up water is not always available to replace that water that is evaporated and lost or bled off to control the solids in the cooling system. More areas are imposing water constraints as water becomes a more precious commodity. If water is available, TAS provides the most robust and efficient water cooled cooling systems matched to optimize the design conditions.

Air cooling (dry cooling) solves the problem of zero water input. However the standard air cooled designs of the past leave a lot to be desired; poor performance, difficult and continuous maintenance, with hundreds of fans and belts that have to be attended to and replaced. TAS Energy has again redefined the industry, with the only advanced air cooled design that makes sense. We redesigned the system completely as a zero input, zero output, zero recirculation system that minimizes leakage, requires zero water input, and maximizes performance and service ability.

Advanced Heat Exchangers/Evaporators

Geothermal fluids can be used as low as 200°F subcritical up to 400°F design temperatures, and even bi-phase geothermal steam - fluid designs can be employed. The TAS Energy supercritical cycle captures the thermodynamic advantage of a continuous working fluid temperature rise without isothermal boiling (an advantage over the typical iso-pentane process), but without the complexity of a multi-fluid ammonia water process (or the inherent corrosion and hazards of working with ammonia). The equipment design risk is no greater than that for any other heat exchanger designed for a power plant, whether organic Rankine cycle geothermal or conventional steam.