Guidelines For Air Velocities
Step # 1 in determining the size and performance of a coil is dependent upon understanding face velocities of air across the coil. Whether you use CCA’s coil selection program to help size the coil, or you are replacing an existing coil; the height, length and resulting velocity determine everything.
Tips on Hand Designation & “Counter-flow”
Are your water coils right hand vs. left hand? Is it looking into the face of the coil or with the air hitting you in the back of the head? What exactly is counter-flow and why is it important? Are you completely confused by why right hand vs. left hand even exists?
Coils and Counter-flow: 5 Common Questions
The first thing to remember about coils and counter-flow is that chilled water coils are always built to be piped in counter-flow. This means that the air flows in the opposite direction as the water. For example, with counter-flow, the air flows through rows 1-8, while the water runs through rows 8-1. Water always travels through the coil in the opposite direction of the air; hence the term “counter-flow.” Direct Expansion Coils (Evaporator Coils) are also piped in the same manner.
Steam Distributing (Non-Freeze) Coils: The Accidental Coils
Were you aware that Steam Distributing coils or “Non-Freeze” steam coils were essentially discovered by accident? At the inception of the HVAC industry, steam coils were originally designed to be shorter in length because there was not a good way to evacuate condensate. In an effort to make steam coils longer in length, the concept of a steam coil containing a tube within a tube was invented.
Condenser Coils Failing? Here’s probably why….
Very rarely do condenser coils ever freeze so the first thing you’re going to want to know is if your coil died of corrosion, old age, or possibly vibration. Old age is obviously preferable because with a few easy dimensions, we’ll have enough to price up your duplicate coil.
Boca Raton Hospital Covid-19 Care Condenser Coils
A large HVAC contractor in South Florida recently contacted Capital Coil & Air with a request to modify an existing system of Carrier 38 Series Microchannel Coils with (4) large condenser coils on an emergency basis. The main goal was to change over from microchannel to standard copper tube/aluminum fin condenser coils.