DX coil

DX coil

[¦dē¦eks ‚kȯil]
(mechanical engineering)
Mentioned in ?
References in periodicals archive ?
The outside air, OA from the zone is passed through the DX coil of the DOAS system to get conditioned outside air, OA'.
oa] is lower than the standard rating condition at 35[degrees]C (95[degrees]F) for both the ASHP and DX coil.
The actual DX coil furnished for the system was 8 row, 10 fpi, with a face velocity of 440 fpm (2.
When the temperature drop of about 20[degrees]F(11[degrees]C) across the dX coil results in a discharge temperature below the comfort setpoint of 53[degrees]F(12[degrees]C), the economizer controller will reduce the economizer airflow to keep the discharge air temperature from getting too low.
For a zero-superheat dry DX coil, there is only sensible cooling, and the local heat transfer rate is thus given by
Active air handling system system comprising of a heat exchanger complete with DX coil and high efficiency filter connected to one outdoor inverter unit.
DX coil with the DOAS AHU for achieving dehumidification:
A part of the return air mixes with the outside air from the DOAS and is cooled by the heat pump DX coil, while the rest of the return air leaves the building by passing through the enthalpy wheel located in the rooftop DOAS unit.
The indoor coil model is an extension of the DX coil model that exists in EnergyPlus (Raustad 2013).
When the temperature drop of about 20[degrees]F(11 [degrees]C) across the dX coil results in a discharge temperature below the comfort setpoint of 53[degrees]F(12[degrees]C), the economizer controller will reduce the economizer airflow to keep the discharge air temperature from getting too low.
Although the current VRF DX coil model has a variable capacity, it utilizes a constant-speed fan component.
However, in practice, the evaporating and condensing temperature can only be changed within a certain range due to some mechanism limitations; for example, the maximum and minimum condensing pressure requirements, minimum refrigerant vapor velocity requirement for good oil return, no formation of frost on the DX coil, etc.