The Value of Wind Driven Rain Resistant Louvers

Livingston, James
April 2007
Heating/Piping/Air Conditioning Engineering;Apr2007 Supplement, Vol. 79, p18
The article discusses how wind driven rain resistant louvers may lead to greater airflow, heating and ventilation capacity. The blades have to be designed according to spacing, number of blades and whether horizontal or vertical blades should be used. For design innovations several factors need to be considered such as rain penetration resistance and water penetration performance. Benefits of such louvers include lower cost installation and increased area velocity.


Related Articles

  • Standard 62's Multiple Spaces Equation: For Design, NOT Control. Kettler, John // ASHRAE Journal;Aug2003, Vol. 45 Issue 8, p20 

    Describes how to calculate the amount of outdoor air required from an air-handling unit serving multiple spaces for system design purposes. Use of the equation as a dynamic control algorithm that is highly dependent on system loads; Example showing what can happen when internal spaces such as...

  • Damper Actuator Savvy. Checket-Hanks, B. // Air Conditioning Heating & Refrigeration News;7/28/2003, Vol. 219 Issue 13, p16 

    Discusses the workability of damper actuator savvy. Applicability on commercial HVAC system operating and troubleshooting; Effectiveness in troubleshooting commercial systems; Usage in adjusting airflow.

  • Ductwork Problems Cause Issues With Airflow. Turpin, Joanna R. // Air Conditioning Heating & Refrigeration News;7/25/2005, Vol. 225 Issue 13, p1 

    Discusses airflow problems relating to flex ducts. Improper installation of flex ducts resulting in too little airflow; Key to the optimum performance of flex ducts; Resources available that show contractors how to properly install flex duct.

  • Minimum Outside Air Solution Dilemma. Aramil, Dennis // TAB Journal;2007, p19 

    The article focuses on the importance of document review in delivering TAB services. A review of the document specifications conducted by a TAB agent before the installation of heating, ventilation and air conditioning (HVAC) project resulted to a definitive increase in owner satisfaction. The...

  • www.achrnews.com.  // Air Conditioning, Heating & Refrigeration News;2/19/2007, Vol. 230 Issue 8, p4 

    The article offers information on various topics featured in the web site of the journal. The methods for performing differential pressure measurement between two areas include airflow measurement for spray booths and other measurements. Meanwhile, a recent poll on the web site points that many...

  • Beware Of Single-Mode Balancing Reports. Ellis, Rebecca T. // Engineered Systems;Aug2014, Vol. 31 Issue 8, p24 

    The article reports on the importance of testing and documenting air and water balancing in a heating, ventilation and air conditioning (HVAC) system. It discusses the data included at testing, adjusting, balancing (TAB) reports, particularly the documentation of airflow readings. It suggests...

  • Managing Airflow In Zoned Applications. Brown, John // IE3;Nov2013, Vol. 2 Issue 6, p48 

    The article focuses on the management of airflow in zoned applications. It says that HVAC zone manufacturing have given their design and establish guidance for the said management and duct pressure in HVAC residential application. It states that some of the zoning guidance had trial and error...

  • Compression Effects on Pressure Loss in Flexible HVAC Ducts. Abushakra, Bass; Walker, Iain S.; Sherman, Max H. // HVAC&R Research;Jul2004, Vol. 10 Issue 3, p275 

    A study was conducted to evaluate the effect of compression on pressure drop in flexible, spiral wire helix core ducts used in residential and light commercial applications. Ducts of 6, 8, and 10 in. (150, 200, and 250 mm) nominal diameters were tested under different compression configurations...

  • The Minimum Capacity of HVAC Secondary Systems (with Capacity Reduction by Interzonal Airflow) (RP-1049). Wright, Jonathan; Yi Zhang // HVAC&R Research;May2008, Vol. 14 Issue 3, p397 

    To date, the performance of alternative HVAC secondary systems has been compared using either the systems' energy use directly or by a life-cycle cost analysis. This paper introduces the concept of rating a system's performance by comparing its capacity at a particular operating point to the...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics