In this Issue

• New U-Factor Calculator Video

• Elite Software YouTube Channel

Elite Software offers over 30 programs for all kinds of mechanical, electrical, and plumbing design applications. This monthly newsletter will announce new software, tradeshow events, and tips on using existing software. See previous newsletters here.

Three programs from Elite Software contain a U-Factor Calculator feature. These programs are Rhvac for ACCA Manual J, D, and S HVAC calculations, Chvac for commercial HVAC load calculations based on ASHRAE, and the HVAC Tools software. A U-Factor is the overall heat transfer coefficient of a roof, wall, or glass surface. The U-factor Calculator is primarily based on the building materials listed in the ASHRAE Handbook of Fundamentals as seen here.

The calculation of a U-Factor (overall heat transfer coefficient) is dependent on the resistance to heat transfer (R-Value) of all the materials that makeup the roof or wall in question. In addition to the various resistances, there is also the issue of how the materials are arranged in the wall or roof. Are there framing members involved? Is the insulation applied only between framing members like batt insulation, or is it applied on an overall basis like foam board? Are there any air spaces? Is one side of the wall exposed to wind with the other side seeing only still air?

The U-Factor calculator factors allows for all these variables in the calculation of the overall heat transfer coefficient of a roof or wall surface. Click here to see the new video on how to use the U-Factor Calculator. This new video along with many others can be viewed on the Elite Software YouTube channel.

If you have questions on any topic, please feel free to call 800-648-9523 or 979-690-9420, or send email to info@elitesoft.com.

Sincerely,

Bill Smith
President, Elite Software

U-Factor Calculator Video

U-Factor Calculator Video

National Comfort Institute recommends Elite Software for High Performance Contractors