Is water-from-air regarded as a valuable water resource in the heating, ventilation, and air-conditioning (HVAC) industry? The answer is, "yes", as shown by the article, AHU Condensate Collection Economics: A Study of 47 U.S. Cities, published in the ASHRAE Journal, vol. 54, no. 5, May 2012. AHU is the acronym for the Air Handling Unit in an HVAC system. The authors list of U.S. cities where they recommended condensate collection included: Athens, GA; Charlotte, NC; Dallas, TX; Honolulu, HI;; Knoxville, TN; Memphis, TN; Miami, FL; New Orleans; New York, NY; Oklahoma City, OK; Orlando, FL; San Antonio, TX; San Diego, CA; St Louis, MO; Topeka, KS; and Washington, DC. It is notable that most of these cities, with the exception of Honolulu and San Diego are in the eastern half of the USA.
The water-from-air industry is indeed maturing when public tenders are published for Atmospheric Water Generators (AWGs)! The Executive Engineer of Uttarakhand Jal Sansthan, Dehradun, Uttarakhand invited tenders for the supply of single phase or three phase AWGs of 300 to 1000 litres per day capacities. The Water-from-Air Resource Annual Index for Dehradun is 0.88 making it a good site for water-from-air system operation. Dehradun is at an elevation of 554 metres and is situated about 200 km NNE of Delhi.
MARG Properties is making available water-from-air systems to residents of its Savithanjali development. Located in the environs of Chennai, the site is a premium gated community of 678 high rise apartments in 16-floor buildings. This is an indication of the increasing acceptance of water-from-air technology in circumstances where it makes economic sense. As mentioned in an earlier blog post, Chennai has a Water-from-Air Annual Index of 1.37 which makes it an excellent location for year-round use of the technology.
Water-from-air machines are soon going to provide drinking water for thousands of students in Chennai--according to an August 13 article in The Times of India. Chennai has a Water-from-Air Annual Index of 1.37 which indicates an excellent location for year-round use of the technology. Atmoswater Research has Water-from-Air Resource Charts available for Chennai and five other cities in India.
Water-from-Air Resource Charts are now available for four locations in the United Arab Emirates (UAE): Abu Dhabi, Ash Shariqah, Dubai, and Ra's Al Khaymah. All four locations show noticeable variability in the water-from-air resource through the year. Water vapour density (grams per cubic metre) decreases to 9.8 for each location in January. Maximum density in the high sun season varies with location, increasing to 19.9 in Dubai in July. A month-by-month assessment of the resource is available using these charts.
The water-from-air (WFA) resource for Doha varies noticeably with the seasons, ranging from an average water vapour density of 9.2 grams per cubic metre in January to 20 grams per cubic metre in September. Understand how the effectiveness of WFA machines changes from month to month in Doha by reading our new chart.
I have been researching and developing drinking-water-from-air technologies since 1984. As a physical geographer, I strive to contribute an accurate, scientific point-of-view to the field.