0

Full Content is available to subscribers

Subscribe/Learn More  >

Improvements to Converting Moist Air Into Water and Power

[+] Author Affiliations
Robert J. Vidmar

Independent Inventor and Consultant, Reno, NV

Paper No. POWER2009-81023, pp. 551-560; 10 pages
doi:10.1115/POWER2009-81023
From:
  • ASME 2009 Power Conference
  • ASME 2009 Power Conference
  • Albuquerque, New Mexico, USA, July 21–23, 2009
  • Conference Sponsors: Power Division
  • ISBN: 978-0-7918-4350-5 | eISBN: 978-0-7918-3853-6
  • Copyright © 2009 by ASME

abstract

Moist air conversion to water and power by a system that uses atmospheric water vapor as its fuel is described. Water vapor is separated from moist air using a vapor separation barrier system. This system has atmospheric pressure on one side of the barrier and the opposite side has a low pressure maintained by the inlet of a vacuum pump/compressor system. The pressure difference across the barrier promotes water-vapor transport through the barrier into the vacuum-pump inlet. Additional compression is necessary to raise the water-vapor pressure and temperature to values appropriate for efficient energy transfer and condensation. The magnitude of compression depends on the ambient water-vapor concentration that varies with location and season. Intercooling between compressors and the magnitude of compression are issues. In this paper the use of a two-compressor system without intercooling is developed and applied to Miami, FL, during the summer. Output power calculations are modeled as an improved Rankine-cycle with reheaters, regenerators, and feedwater heating to improve overall cycle efficiency. The net power output for a water-vapor throughput of 1 kg/s (2.204 lbm/s) is +151.1 kW (+515.5 kBtu/hr) with the water discharged from the system as a liquid. A turbine-based power extraction system is described that uses the warmed cooling fluid flowing from the steam condenser following the main turbine for power production. This system converts approximately 1% of the heat from the condenser into power. System calculations are specific to humid coastal areas, such as Miami, FL.

Copyright © 2009 by ASME
Topics: Water

Figures

Tables

Interactive Graphics

Video

Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In