VALIDATION OF V 2 'S WAM ARRAY TECHNOLOGY



V 2 has been actively testing and analyzing its wind acceleration module (WAM) technology for 3 years. The two most important aspects of its potential impact on the DE market are its energy intensity and its delivered cost of energy. V 2 has performed a number of tests, studies, and engineering analyses and reviews to determine its intensity and cost.

V 2 WAM ENERGY INTENSITY

Tests in this area were performed both in the Massachusetts Institute of Technology (MIT) wind tunnel and the field to determine the acceleration properties and energy production of single modules and arrays.

Phase 1 Testing focused on the acceleration capabilities of the module designs in the field. Testing demonstrateded that V 2 nozzles achieve close to theoretical acceleration with no power extraction, nearly twice the performance of previous accelerators. Results were reviewed and confirmed by Cermark Peterka Peterson (CPP), a world known wind engineering consulting firm.

Phase 2 Testing focused on the power extraction of arrays and physical aspects of the machine that drive costs. MIT wind tunnel research was performed with a 3 x 5 scale array of modules pictured below.


Measurements were made by means of pressure taps and balance sensors. Pressure measurements were used to determine acceleration, array flow, and pressure drop across screens representing turbines and the balance was used to determine the drag forces acting on the machine and the self-orienting properties of the arrays. Array mass flow was shown to be the same as single module mass flow as can be seen in this plot of the array's mass throughput.



Phase 2 Research validated the expected power extraction of the technology when deployed in arrays, confirmed the low drag forces the arrays will experience, and showed that the arrays can be expected to passively self-orient to wind direction.

Phase 3 Testing, performed under US Army contract, focused on full scale module power extraction and the energy intensity of arrays in the field. The module was tested at a site in Littleton, MA over several weeks. Measurements were taken by three different systems.


Results closely matched those of the MIT array tests confirming the power extraction and energy intensity of the technology in field conditions. Measured energy intensity indicates DE deployments of the technology could have ~1.5-3 times the intensity of a modern coal plant, 1/3 - 1/2 the intensity of a modern Natural Gas plant, and roughly ~50 times the intensity of other clean generation technologies.


V 2 WAM ARRAY"S COST

Using the drag coefficients determined in the MIT wind tunnel research, V 2 completed a design concept and cost study of a utility scale 7MW array, including a full bill of materials, all labor and installation cost, permitting costs, mark-up, and annual operating expense. V 2 examined the effect of both wind resource and machine size on cost, finding:

1) That the utility scale arrays would be competitive with new capacity fossil busbar levelized cost of energy (LCOE) without subsidies in all wind sites above a Class 1, roughly 90% of the continental US.

2) That V 2 arrays' LCOE decreased with size, e.g. smaller machines produced energy at a lower cost than larger machines unlike standard Horizontal Axis Wind Turbines (HAWT's).

The V 2 design concept and cost and sizing analysis was independently reviewed by Knight Piesold Inc., an industrial and energy project engineering company. Knight Piesold cost and LCOE estimates were within 5% of the V 2 analysis. This indicates that utility scale V 2 arrays are competitive with centralized fossil LCOE's in ~90% of the US and smaller DE scale arrays are competitive with the retail commercial and industrial price of electricity in ~65% of US metros, approximately 80% of the total US electricity market.

Globally the technology is even more competitive, especially in developed areas such as the EU where most energy is imported and in developing areas such as the BRIC's where the transmission infrastructure capacity {the grid} is lagging well behind growth and demand.


GRANTS, AWARDS, PATENTS

V 2 was selected from 81 companies by the U.S. Army for Small Business Innovation Research (SBIR) Phase I and Phase II grants in Q2 2012 and Q3 2013 respectively. The grants are to design and fabricate a prototype machine for use in base camps.

V 2 was chosen as one of three Northeast Region Finalists in the 2010 National Cleantech Open business competition. The Company was the only Finalist in the U.S. with a wind technology and a power generation technology of any kind.

V 2 has been issued 5 U.S. patents to-date on the core accelerator and modular aspects of its technology. Additional U.S. and international patent applications have been and continue to be filed.

Questions?




wind