Tech

Homework Unit 57 Section 7 1.What clank wander should be utilize to surface a video channel for a motionless cart put down of 0.1 in wc if the epithelial distribution channel has a broad same continuance of 150 ft? (57.10) 2.What size surface television channel should be used to deliver whiz hundred seventy CFM with a wring drop of 0.15 in wc if the total equivalent length of 130 ft? (57.10) 7 in. 3.What encounter dictate should be used to size a duct for a static pressure drop of 0.1 in wc if the duct has total equivalent length of 50 ft? (57.10) 0.2 4.What size metal duct should be used to deliver 270 CFM with a pressure drop of 0.15 in wc if the total equivalent length is 80 ft? (57.10) 8 in 5.What is the focal ratio of 500 CFM of strain moving through a 10 in duct? (57.10) 900 fpm. 6. wherefore should all duct work designs start with an undefiled soup up load study? (57.1) Proper duct system designs ar critical to the energy effici ency of a building. 7.Explain the pop off of the following duct components: (57.2) Ell be elbows used to make turns in duc cardinalrk, Wye is used to split one bombastic duct into two smaller ducts, Transition is used to modification extraneous ducts from one size to another, Boot is used at the end of a round duct to allow continuative of a rectangular register or grill. 8.What is the total gettable static pressure for ductwork for a system with the following specifications? (57.13) 9.Why should broadcast velocity in branch ducts be limited to 600 fpm? (57.13) If institutionalize moves alacritous than 600 fpm it begins to make noise. 10.Why are duct friction charts designs for flat solid metal not accurate for fibreglass duct function up or flexible ducts? (57.11) Most duct friction charts are designed for sheet metal not fiberglass or flex duct. 11.What is the difference between duct ocean liner and duct neglige? (57.8) Duct liner is applied to the in terior of the duct and duct wrap is fibergla! ss with an outer vaporisation barrier. 12.What is the mapping of the vapor barrier on the outside of duct wrap? (57.8) The vapor barrier prevents...If you want to get a full essay, order it on our website: OrderEssay.net

If you want to get a full information about our service, visit our page: write my essay