The optimized construction of the covers enables easy cleaning for the air curtain
and it does not require the disassembly of any part, always ensuring hygienic operation.
* When the air curtain
is off (not operating), the doors are considered single doors (therefore, the flow resistance model of single doors is applied when the air curtain
For designs that include air curtains
, they are generally created using a couple of linear slot diffusers with supply plenums, which, similarly, are designed to deliver air evenly over the length of the air slot.
By using two complete units, they could test two different groups of air curtains
at the same time.
However, flow field visualization tests showed that when more than one air curtain
was operating, the curtain closest to the dissemination room showed some instability.
The HCR Model NPAC "Negative Pressure Air Curtain
", which has special fluctuating air pressure detecting instruments, is currently in use at all existing Wal-Mart specialty distribution centers.
Based on similar experiences following Hurricane Andrew, the engineering consultant supplied technical specifications on the operation of refractory type air curtain
burners and air quality test results.
Airbloc, which is part of NORTEK GLOBAL HVAC, says it supplied an air curtain
from its AC Chassis range and the electrically heated CMS1000HE12-SM unit delivers a powerful downflow of heated air to create comfortable conditions for customers and it is a highly energy-efficient HVAC solution, typically reducing, heat loss around an open door by up to 80%.
has introduced the Walk-In Cooler Efficiency Kit, an easy-installation air curtain
and control package combination that helps retailers comply with new energy code mandates for existing and new walk-in coolers.
For the horizontal refrigerated display cases, the simulation by Cui and Wang (2004) is the only one that is in line with measured temperature profile at the outlet of the air curtain
. For the vertical refrigerated display cases, unfortunately, none of the existing literatures can provide a quantitative agreement with the experimental data.