For new VRF/VAF DOAS economizer
operation when outdoor Tdb[greater than or equal to] 54[degrees]F and Tdpt < 56[degrees]F: (2) kWh = (supply cfm * 3.0521E-06 + 8.5E-04)*60
* Flow from any two primary chilled water pumps can be diverted to the heat exchanger and then also directed through chillers before being sent to the load (partial economizer
The targeted pull-down time (with economizer
) is identical to the pull-down time of the initial system.
The electric savings from precooling the CHWR with a water economizer
are shown in Figure 3.
[H.sub.A], [H.sub.B], [H.sub.D,mix], [H.sub.E] and [H.sub.I]: The enthalpies of refrigerant at compressor inlet (KJ/kg), outlet (KJ/kg), vapor mixture coming from compressor and economizer
units (KJ/kg), at the condenser inlet (KJ/kg), and at the inlet of the refrigerant chiller (KJ/kg), respectively
Taking into account the position of the heat economizer
and the reducing number of the prefab elements and junctions, prefab panels of 2 m broad are chosen.
Experiments were performed on a five-ton rooftop air conditioner equipped with an economizer
. The rooftop unit was set up inside environmental chambers to simulate indoor and outdoor conditions.
A fluid economizer
system is incorporated into a chilled water or glycol-based cooling system.
The Ecoflair Indirect Air Economizer
is an efficient data center cooling solution that moves cooling from the data center floor to the facility exterior.
An example of this is when some air handlers are in economizer
mode and not using chilled water for cooling, while the remainder of the air handlers are using chilled water for cooling.
In winter, an increase in outdoor ventilation during low ambient temperatures will greatly increase building heating costs when an outdoor air economizer
is used to blend pool return air with outdoor air.
The study also discusses the applications of C[O.sub.2]-based demand-controlled ventilation DCV strategy integrated with the economizer
operating strategy for air source heat pumps in schools, investigates their impact on the annual energy consumption, and determines the potential savings achieved in different USA locations.
The wastes will consist primarily of fly ash, bottom ash, economizer
ash, cooling tower screenings and sediments, coal mill wastes, sediments from facility sumps, storm water ditches and impoundments, and other waste streams generated by SWEPCO, department spokeswoman Cecillea Pond-Mayo reported.
The stand alone ERV module can also be used in conjunction with an economizer