An excerpt from "Thermal Comfort Principles and Practical Applications for Residential Buildings" available for free from <https://www.linkedin.com/groups/13843486/>"Zoning is both an art and science which strategically must consider the representat…
Thermal Comfort Principles and Practical Applications for Residential Buildings. A guide to using the fundamentals of ASHRAE Standard 55 Thermal Environmental Conditions for Human Occupancy; for influencing architecture, building enclosures, interio…
"A guide to using the fundamentals of ASHRAE Standard 55 Thermal Environmental Conditions for Human Occupancy; for influencing architecture, building enclosures, interior designs, and electrical/mechanical (HVAC) systems for improving thermal conditi…"
My concern is one of liability.
Even with sealed combustion devices the manufacturers (for example) of gas fireplaces have in the "fine print" warnings for potential back drafting with CYA clauses and advisement for MUA...no one reads these bu…"
Today there is no research that I can find to support less than 500 fpm.
As noted above we have much higher velocity systems without noise issue due to locating the fan away from the hood, minimizing fittings and using silencers.
What I am…"
All good comments and questions that need to be explored for residential projects.
We have large residential system (1200 cfm) designed for 800 to 1000 fpm with single inline fan located 30 to 40 feet away from the range hood...two silencers…"
"Interestingly the 500 fpm was a drastic reduction from a previous requirement of 1500 fpm established by NFPA following an ASHRAE research project which looked at the impact of velocity on grease deposits ...100 cfm in an 8" duct is less than 300 fp…"
Has anyone looked at the low velocity consequences as a result of marrying these statements pulled from the resource documents…“Use 8-inch round smooth metal ducts” and “ASHRAE and other groups recommend a minimum of 100 cfm.” and “HVI recommends 10…