International Conference on Solar Updraft Tower Power Technology SUTPT2012
Huazhong University, Wuhan, China, October 27, 2012
Description of the proposed proposed Atmospheric Vortex Engine (AVE) process, its thermodynamic basis, the progress made to date and the current development plan.
Paper entitled "Energy from Convective Vortices" - Written by Louis Michaud and Brian Monrad and published in SUTPT2012 transactions
Supporting presentation by Mr. Donald Cooper, MIE Australia
Hurricane Sea to Air Heat Transfer
Presentation made at the American Meteorological Society 18th Air Sea Interaction Conference, July 2012
Hurricane cooling is usually attributed to upwelling and mixing of cold water from below. The presentation proposes the opposite hypothesis, namely that: “Hurricane sea cooling is almost entirely due to heat removal from above and not to cold water from below”.
Revisions to Spray Production and Deposition Areas
The original 18th Air Sea Interaction conference presentation suggested that spray is produced mainly under the eyewall of the right rear quadrant and then deposited to the right of the hurricane track. This revised theory suggests that the spray is produced along the hurricane track and carried by the wind to the right of the hurricane track. See link to figures showing the revised and original spray production and deposition areas. The revised theory is based on the surface and subsurface sea temperature measurements in paper: Cold Wake of Hurricane
Reference for D"Asaro et al. 2007 paper:
D’Asaro EA, Sanford TB, Niiler PP, Terrill EJ (2007) Cold wake of hurricane
On Hurricane Intensity
Michaud, L. M. 2012: On Hurricane Energy. Meteorol. Atmos. Phys
Warm sea water is the energy source for hurricanes. Interfacial sea‑to‑air heat transfer without spray ranges from 100 W m-2 in light wind to 1000 W m-2 in hurricane force wind. Spray can increase sea‑to‑air heat transfer by 2 orders of magnitude and result in heat transfers of up to 100,000 W m-2. Drops of spray falling back in the sea can be 2 to 4 °C colder than the drops leaving the sea thus transferring a large quantity of heat from sea to air. The heat of evaporation is taken from the sensible heat of the remainder of the drop; evaporating approximately 0.3% of a drop is sufficient to reduce its temperature to the wet bulb temperature of the air. The heat required to evaporate hurricane precipitation is roughly equal to the heat removed from the sea indicating that sea cooling is due to heat removal from above and not to the mixing of cold water from below. The paper shows how case studies of ideal thermodynamics processes can help explain hurricane intensity.Springer Meteorology and Atmospheric Physics web site where the article "ON HURRICANE ENERGY" is available for a fee
Harnessing Energy From Convective VorticesPre-publication manuscript submitted for peer reviewed publication IEEE Power Energy System Magazine / sustainability Transaction in September 2011.
The paper describes the atmospheric vortex
engine process, its thermodynamics basis and its potential.
Harnessing Energy from Convective Vortices - Complete text with figures and table - PDF (7900 KB)
Harnessing Energy from Convective Vortices - Complete text without figures or table - PDF (70 KB)
Figures 1 to 9 - PDF (7700 KB)
Table 1 - PDF (20 KB)
Mechanical Engineering Magazine
Mechanical Engineering Magazine, April, 2011, The Sky's the
Link to "The sky's the Limit" at Mechanical Engineering Magazine
Power Magazine, March 1, 2010, Harnessing Energy from Upward
Link to "Harnessing Upward Heat Convection" at Power Magazine
"For more than 127 years POWER magazine has been considered the definitive information source for the power generation market. We covered the earliest advances of steam power plants in the 1800s and addressed energy supply issues during World Wars I and II. We were the first to report on the birth of nuclear power, and today we report on modern advanced power technologies, including wind, solar, tidal, and ultrasupercritical generation. Our coverage of the worldwide power generation industry, which includes all fuel types and generation technologies, has never been more critical as the world grapples with so many supply options and regulatory hurdles."
Energy Manager Magazine
Energy Manager Magazine, October-December, 2009, Vol 2, No 4,
ISSN 0974-0996, published by Energy Press, Ernakulam, India
"A quarterly magazine of the society of energy engineers and managers / India" (www.energyprofessional.in)
Atmospheric Vortex Engine - published in Energy Manager - PDF (848 KB)
IEEE - Science and Technology for Humanity
"The Atmospheric Vortex Engine", Presented at IEEE TIC-STH
Toronto International Conference - Science and Technology for Humanity
September 26-27, 2009 at Ryerson University, Toronto, Ontario, Canada
Draft of peer reviewed paper 1569197181 to be published in TIC-STH conference proceedings - PDF (88 KB)
TIC-STH Presentation Slides - PDF (4.9 MB)
TIC-STH Presentation Notes - PDF (41 KB)
New Unpublished Manuscript - Hurricane Isabel Intensity
Recent dropsonde observations in hurricane Isabel provided
unprecedented high quality data on eyewall: air temperature, relative
humidity and sea surface temperature. This January 2007 manuscript
shows that eyewall temperature and humidity can be used to calculate
minimum eyewall pressure and maximum wind speed.
Hurricane isabel Intensity - Complete Paper - PDF (160 KB)
Table 1 - PDF - (74 KB)
Figure 1 - JPG (61KB)
Figure 2 - JPG (61KB)
Printout of MATHCAD calculation results for case 4 - PDF (117 KB)
Technical Meeting Presentations
Unrestrained Expansion - A Source of Entropy,
American Geophysical Union Fall 2005 Meeting -
Thermodynamics - Poster Session
Unrestrained Expansion - A Source of Entropy - Complete Paper - PDF (143 KB)
Unrestrained Expansion - AGU Poster Presentation - Powerpoint PPT (647 KB)
References for "Unrestrained Expansion - A Source of Entropy"
Background Material for "Unrestrained Expansion - A Source of Entropy"
Vortex Engine" - A
presentation prepared for the Wayne State University
Department of Physics & Astronomy, Winter 2008 Nuclear Physics
Seminar, at the invitation of Professor Giovanni Bonvicini, and
presented on January 18, 2008
The Atmospheric Vortex Engine - WSU Presentation Slides - PDF (6.3 MB)
Thermodynamic Presentation- PDF (6.4 MB)
Thermodynamic Presentation Notes - PDF (85 kB)
Vortex Engine Concept. Presentation by Don Cooper for
Engineers Australia, West Perth, Australia, April 22, 2009
Engineers Australia - The Atmospheric Vortex Engine Concept by Don Cooper - Presentation Announcement - PDF (151 KB)
Link to full copy of presentation on Engineers Australia website
Peer Reviewed Publications
The proposal has been described and explained in the following reviewed publications. Links to Web versions of the articles are provided where available. The copyright to these publication belong to the publishers. Single copies of the articles can be downloaded and printed for the reader's personal research and study.
(1) Proposal for the use of a controlled
tornado-like vortex to capture the mechanical energy produced in the
atmosphere from solar energy. Bull. Amer. Meteor. Soc.,
Michaud, L.M., Vol. 56, Pg. 530-534, 1975.
Complete Article - PDF (544 KB)
(2) On the energy and control of atmospheric
vortices. J. Rech. Atmos., Michaud, L.M., Vol. 11, Pg.
Complete Article - PDF (20.6 MB)
(3) Heat to work conversion during upward heat
convection. Part I: Carnot engine method.
Reprinted from: Atmospheric Research, Michaud, L.M., Vol. 39, Pg. 157-178, 1995, with permission from Elsevier Science.
© Copyright: Elsevier Science Ltd.
Link to abstract
Complete Article - PDF (1.1 MB)
on "Convective potential energy in the environment of oceanic and
continental clouds., J. Atmos. Sci., Michaud, L.M.,
pg. 1209-1211, 1996.
Copy of comment - PDF (231 KB)
(4b) Reply to Comment on "Convective potential
energy in the environment of
oceanic and continental clouds., J. Atmos. Sci.,
and Zipser, E., Vol.53,
pg. 1212-1214, 1996.
Copy of reply to comment - PDF (219 KB)
(5) Heat to work conversion during upward heat
convection.Part II: Internally generated entropy method.
Reprinted from: Atmospheric Research, Michaud, L.M., Vol. 41, Pg. 93-108, 1996, with permission from Elsevier Science.
© Copyright: Elsevier Science Ltd.
Link to abstract
Complete Article - PDF (709 KB)
(6) Entrainment and detrainment required to
explain updraft properties and work dissipation.
Reprinted from: Tellus A., Michaud, L.M., Vol. 50A, Pg. 283-301, 1998, with permission from Munksgaard publications.
Full text PDF from Tellus web site
Full text scanned PDF from vortexengine.ca (30.9 MB)
(7) Vortex process for capturing mechanical
energy during upward heat-convection in the atmosphere.
Reprinted from: Applied Energy, Author: Michaud, L.M., Vol. 62(4), Pg. 241-251, March, 1999, with permission from Elsevier Science.
© Copyright: Elsevier Science Ltd
HTML version of article with additional table and links
Complete Copy of article - PDF (200 KB)
Table 1: Summary of article calculations
Mathcad 5.0 Program used to generate Table 1
(8) Thermodynamic cycle of the atmospheric
upward heat convection process.
Reprinted from:Meteor. Atmos. Phys., Michaud, L.M., Vol. 72, Pg. 29-46, 2000, with permission from Springer-Verlag.
Full text PDF from dvgu.ru
(9) Total energy equation method for
calculating hurricane intensity. Added to site Nov.
Reprinted from:Meteor. Atmos. Phys., Michaud, L.M., Vol. 78, Pg. 35-43, 2001, with permission from Springer-Verlag.
Full text from dvgu.ru
Full text PDF from vortex engine.ca
(1) Note on: The energy deficit of 20 to
in climate models.
Manuscript with figures - web format
(1) Energy Central White Paper Website
("Global Power Industry News"),
Report posted: 9 December 2004
Link to Atmospheric Vortex Engine paper on Energy Central
(2) Energy Bulletin Website ("A
clearinghouse for current
regarding the peak in global energy supply")
A Proposal for a new Renewable Energy Source: The Atmospheric Vortex Engine, "A brief comprehensive description of the Atmospheric Vortex Engine written by Eric Michaud and Louis Michaud", Paper posted: 15 April 2005
Link to the article on Energy Bulletin
Link to Windtech article leader on web
Link to Windtech International website
The Potential of
the Atmospheric Convection Engine -- Capturing Energy
in the Atmosphere,
EnergyPulse ("EnergyPulse is the global forum for power
January 26, 2006
Link to EnergyPulse article
(1) HP48SX Software Programs for
Link to HP48SX software page
(2) Mathcad Thermodynamic Calculations
Link to Mathcad files
Miscellaneous Other Information
(1) Presentation on
Atmospheric Work Production and Dissipation
Work Production and Dissipation Presentation - PDF (340 KB)
(2) Willis Island Sounding
Willis Island Sounding Figures - Powerpoint PPS (458 KB)