| ||October 26, 2011 |
| Simplified Method of Calculating Evaporation From Swimming Pools |
By MIRZA M. SHAH, PhD, PE, FASHRAE, FASME, van Zelm Heywood & Shadford Inc., Farmington, Conn.
|In 2002 and 2003, the author developed formulas for calculating evaporation from occupied and unoccupied swimming pools. Despite the formulas' proven accuracy, many engineers found them difficult to use, as computer programming is needed for accurate calculation of air properties. To simplify use of the formulas, this article presents tables that give the results of calculations over a wide range of conditions. Additionally, the article introduces a formula for the rare condition in which natural convection does not occur. [MORE] |
| ACEEE: Massachusetts No. 1 State for Energy Efficiency |
|After four years, there is a new No. 1 in the American Council for an Energy-Efficient Economy’s (ACEEE’s) annual ranking of best states for energy efficiency. [MORE] |
| Past ASHRAE President Lynn G. Bellenger Dies |
|Lynn G. Bellenger, PE, FASHRAE, the first female president in the American Society of Heating, Refrigerating and Air-Conditioning Engineers’ (ASHRAE’s) 116-year history, died Oct. 19. [MORE] |
| USGBC President Elected Chair of World Green Building Council |
|Rick Fedrizzi, president, chief executive officer, and founding chair of the U.S. Green Building Council (USGBC), has been elected chair of the World Green Building Council (WorldGBC), a coalition of green-building councils from 89 countries around the world. [MORE] |
| AMCA International Elects Officers and Directors |
|Air Movement and Control Association (AMCA) International elected officers and directors during its 56th annual meeting in Kauai, Hawaii, Oct. 21. [MORE] |
| NEW! Cost-efficient HVAC Transmitters from Vaisala |
Vaisala introduces NEW transmitters for HVAC applications. The Vaisala INTERCAP® Humidity and Temperature Transmitter HMD42 and HMD53 are designed for building automation applications. They combine reliable operation with excellent stability, providing low cost of ownership to the user. The transmitters measure humidity with a ±3 %RH accuracy and temperature with a ±0.4 °C (±0.72 °F) accuracy. They feature various selectable analog output signals and they can be powered by either AC or DC voltage. Click here for more.
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