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Why the return duct of AHU is larger than supply duct?
The air is returning at a lower velocity, so you need a larger size duct.
What causes water to drip from the AC duct work in basements?
The answer is quite simple, your duct work is not insulated somewhere. What is happening is the really cold air is blowing through the duct work and where it is not insulated, its causing condensation to form. It then builds up and starts dripping. You can either go to a hardware store and ask them for duct wrap or just buy a roll of fiberglass insulation and wrap it around and secure with duct tape.
To increase air flow between rooms should vent be installed on the upper or lower part of a door?
It depends. If your bedroom has a supply AND return duct, then no. If there is only a supply duct, and you shut your bedroom door, this pressurizes the bedroom and limits the CFM delivered into the bedroom. A room to room vent or duct would equalize this pressure and allow maximum CFM to be delivered from the central air/heat system.
What are the types of air duct?
There are three main types of air ducts: sheet metal, pre-insulated, and flexible duct work. Sheet metal air ducts can be made of galvanized steel or aluminum, and may be insulated inside or outside with fiberglass. There are pre-insulated air ducts, which are relatively inexpensive to install, made of fiberglass duct board, polyurethane foam panels, or phenolic foam panels. Air ducts can also be flexible ducts, made of flexible plastic over a wire coil.
What is the component that distributes air in the conditioned space?
The supply duct system
Why the return duct of AHU is larger than supply duct?
The air is returning at a lower velocity, so you need a larger size duct.
Why is the intake grill of your home air conditioner blowing cold air?
A supply duct connected to the return duct somewhere? Fan running backwards?
What causes water to drip from the AC duct work in basements?
The answer is quite simple, your duct work is not insulated somewhere. What is happening is the really cold air is blowing through the duct work and where it is not insulated, its causing condensation to form. It then builds up and starts dripping. You can either go to a hardware store and ask them for duct wrap or just buy a roll of fiberglass insulation and wrap it around and secure with duct tape.
Does an attic-mounted air handler require a return air plenum mounted between the duct work and the unit if your duct work is mounted directly to the return side of the unit the supply side has plenum?
If your are refering to the plenum being a large box say for air mixing the answer is no. you should have filter in return side however be sure you have access.
To increase air flow between rooms should vent be installed on the upper or lower part of a door?
It depends. If your bedroom has a supply AND return duct, then no. If there is only a supply duct, and you shut your bedroom door, this pressurizes the bedroom and limits the CFM delivered into the bedroom. A room to room vent or duct would equalize this pressure and allow maximum CFM to be delivered from the central air/heat system.
What is used to connect the supply duct to the supply end of the ECU?
screw type clamp
When installing new central air in a single story ranch with no existing duct work should the duct work go in the attic or the basement if both are an option?
The answer is that "it depends". If the attic isn't insulated, put it in the basement to save on heating/colling costs. If your basement has a tendency to get damp, put it in the attic or you'll risk blowing mold and mildew around in a few years. Whatever area you put it in, make sure the ducts are well insulated.
What are the types of air duct?
There are three main types of air ducts: sheet metal, pre-insulated, and flexible duct work. Sheet metal air ducts can be made of galvanized steel or aluminum, and may be insulated inside or outside with fiberglass. There are pre-insulated air ducts, which are relatively inexpensive to install, made of fiberglass duct board, polyurethane foam panels, or phenolic foam panels. Air ducts can also be flexible ducts, made of flexible plastic over a wire coil.
Where is the hvac plenum?
A plenum is the ducting both prior to and after the furnace or /AC coil if the system has AC as well. It is often sheet metal, however today they may be made from duct board a light weight, insulated product.
What You Need to Know About Getting Your Air Ducts Cleaned?
Before you make a decision if you should get your air ducts cleaned, you require knowing a little about how they work and why they collect dirt. You can simply tell the difference between return and supply ducting by going down to your basement and inspecting the sheet metal ducting typically found hanging from the floor joists on the ceiling. The return duct is typically a large rectangle that is attached to the bottom of your heating system, while the supply duct comes out the top of the furnace. The supply duct is usually made up of a large "trunk" duct on the ceiling, along with smaller metal ducts that branch off into each heated room. You'll find them often covered by a metal grate on the floor or the wall.
What vessel does lymph from the left arm return to the heart through?
Thoracic duct
What is the component that distributes air in the conditioned space?
The supply duct system
