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Alpha Tau Mechanical Solutions is a Mechanical Engineering Consulting Firm that provides state of the art solutions to difficult to

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at affordable cost. Our business is focused on resolving the difficult problems faced by our clients, in the areas of mechanical engineering analysis, construction quality management and engineering consulting. Our belief in perfection and doing the job once; by making use of our experienced experts will result in customer satisfaction. We believe in the saying," measure twice and cut once".

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SIGNAL PROCESSING OF MULTI- DIMENSIONAL MICROSENSOR DATA STREAMS - A NOVEL APPROACH By James Agbormbai, PE.

 Three curve fitting methods, namely; the direct polynomial method, the method of least squares and the Fourier series approximation; have been proposed; with the intention of adopting the most stable fit for the data in study. The sampling theorem for band limited signals has been invoked in this proposal and an adaptation to signal data streams has been proposed. Two methods for predicting micro sensor element fatigue have been proposed with the intention of adopting one to be transcribed into matlab code for actual micro gas chromatographs (µGC). A signal processing software (the crux of the matter) based on Matlab has been proposed. The eventual software is intended for use in programming future smart (µGC) that would be used to detect toxic gases in the atmosphere, analyze gas mixtures in research laboratories and in the pharmaceutical industry to name this few.

 


 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
BIBLIOGRAPHY:
 
1. Alexander Star, Vikram Joshi, Sergei Skarupo, David Thomas and Jean-
Christophe P. Gabriel,” Gas Sensor Array Based on Metal Decorated Carbon
Nanotubes,” Journ. Phys. Chem B 2006- American Chemical Society 2006.
2. Anthony F. Mills,” Mass Transfer,” pp 68 thru 78, 2nd edn; Prentice Hall 2001.
 

3. Anthony L. Peresini,” Math Methods in Engineering,” Lectrure Notes for Math

498- University of Illinois at Urbana Champaign- 2004.

4. Brian R. Hunt et al, “ A Guide to Matlab for Beginners and Experienced Users,”

2nd edn; Cambridge University Press- 2007.

 

5. Ernest O. Doebelin,” Measurement Systems Application and Design, pp101 thru

727,” 3rd edn, McGrawhill 1984.

 
 

6. Erwin Kreyzig,” Advance Engineering Mathmatics pp205 thru 527,” 9th edn; John

Wiley & Sons 2006.

 
7. G. Silverman and H Silver,” Modern Instrumentations A Computer Approach

pp272 thru 292,” IOP Publishing Limited 1995.

 
8. Joseph A. Polkay et al,” A Low- Power Pressure and Temperature –

Programmable Micro Gas Chromatographic Column,” Journ. of

Microelectromechanical Systems, vol 16, No. 5; IEEE/ASME Publication,

October 2007.

9. Kashito Ogata, “Modern Control Engineering,” 4th edn; pp 96 thru 280 Prentice

Hall 2002.

10. Lynda Metref et al,” Contactless Electromechanical Actuators for Microfluidic

Dosing,” Journ. of Microelectromechanical Systems, vol 16, No. 4; IEEE/ASME

Publication, August 2007.

 
 11. Masoud Agah and Kendsall D. Wise,” Low Mass PECVD Oxynitride Gas

Chromatographic Columns,” Journ. of Microelectromechanical Systems, vol 16,

No. 4; IEEE/ASME Publication, August 2007.

 
 12. Sugathevan Suranthiran and Suhada Jayasuriya,” Signal Conditioning with

Memoryless Nonlinear Sensors,” Journ. of Dynamic Systems, Measurement and

Control, vol 126, No. 2, Trans ASME June 2004.

 
 13. Sugathevan Suranthiran and Suhada Jayasuriya,” Utilizing Sensor Arrays to

Attain High Operating Bandwidth,” Journ. of Dynamic Systems, Measurement

and Control, vol 2, No. 2, Trans ASME June 2004.

 
 14. www.silcom.com,” Part I: Fourier Transform and Sampling.”
 
   
SOLAR WATER HEATER-FLAT PLATE COLLECTOR CONCEPT By James Agbormbai, PE.
 
In this paper a solar water heater (SWH) based on the flat plate collector (FPC) concept is proposed. The FPC proposed here is a novelty; in the wise that, it makes use of a darkened aluminum plate with an embossed semi-circular serpentine flow passage. In keeping with this adage," Necessity is the mother of invention;" a special tooling for fabricating the FPC has also been proposed. Unlike existing FPC solar water heaters that are very heavy (because of the use of large copper pipes with low heat transfer surfaces) and impart enormous stresses on building roof structures, the proposed FPC solar water heater is very light in weight and poses no threat to building roof structures. It also has superior heat transfer properties resulting from the plate being in direct contact with the working fluid. Hot water temperatures of slightly above 47°C (116.6°F) are achievable. Simple paybacks of 5 years over a gas water heater and slightly over 2 years on an electric water heater are achievable.

BIBLIOGRAPHY:

1. ASHRAE Research; " Solar Energy Use," ch33; pp33.1-33.8, 2003 ASHRAE Handbook , HVAC Applications, I-P e.

2. Banergee Rangan; " Solar Energy Applications in India", ch 4; pp4-3, Energy and Power Generation Handbook edited by K.P Rao; ASME Press 2011.

3. Boehm Robert; " Some Solar Related Technologies and Their Applications", ch1 pp 1-1 through 1-20; Energy and Power Generation Handbook edited by K.P Rao; ASME Press 2011.

4. Deutschman A. D. et al ' Machine Design Theory and Practice" pp 749-770, Collier McMillan 1975.

5. Farber Eric A; " Solar Energy" pp 9-11 through 9-16, Marks Standard Handbook for Mechanical Engineers; 10e, McGraw-Hill 1996.

6. Luis A. Bon Rocafort and W.J. O'Donnell; " Solar Energy Applications: The Future( With Comparisons)"; ch5, pp5-1 through 5-33; Energy and Power Generation Handbook edited by K.P Rao; ASME Press 2011.

7. Mills A.F; " Steady One Dimensional Heat Conduction", ch2, pp 68 through 142, Heat Transfer, 2e, Prentice Hall 1999.

8. Mills A.F; " Thermal Radiation", ch6, pp 531 through 650, Heat Transfer, 2e, Prentice Hall 1999.

9. Shigley J.E. et al " Mechanical Engineering Design" pp362-366, 4thprinting, McGraw Hill, 1984.

10. Tao Yong X and R. Rambod;" Solar Energy Applications and Comparisons", ch2, pp2-18 through 2-21, Energy and Power Generation Handbook edited by K.P Rao; ASME Press 2011.

11. Thompson J.A., 2008 National Plumbing & HVAC Estimator", pp 292; Craftsman Book Company, 2008.

12. US Department of Energy, " Solar Water Heating", DOE/GO-10096-050, FS119, March 1996.

13. US Environmental Protection Agency, " Improve Energy Efficiency with Solar Water Heating, " Air and Radiation News Letter 6202 J, September 2001.