allows for the storage to recharge without any requirement for a building cooling load
to be met.
GREEN MARK PEAK BUILDING COOLING LOAD
RATING <500 [greater TON than or equal to] 500 TON MINIMUM DESIGN ANNUAL SYSTEM EFFICIENCY (KW/TON) CERTIFIED 0.8 0.7 GOLD 0.75 0.68 GOLDPLUS 0.7 0.65 PLATINUM 0.68 0.65 Note: The kW includes all chiller, condenser and chilled water pumping, cooling tower fans and other power related to the chilled water system.
He says that this may also be due to other factors like under estimating the building cooling load
where the consultant may choose not to design to that point in order not to over size their building capacity and equipment.
Because the solar radiation on the outside envelope-surfaces has a small effect on the building cooling load
, the errors of prediction value are acceptable.
(2010) used a weather prediction model and a simplified building model to compute building cooling load
, which works well for a single building.
(2010) found that plant-covered walls can reduce building cooling load
significantly in a northern region of Greece.
One conventional chiller sequencing control method is to determine the number of chillers required according to the measured building cooling load
. However, the direct measurement of the building cooling load
might be inaccurate or unreliable because of uncertainties associated with the measurement instrument.
[Q.sub.Load] = building cooling load
with no peak-shifting
When the building cooling load
exceeds the heating load the control system determines whether to direct the surplus thermal energy into the GHX for later use/later rejection or to reject it to the closed-circuit cooling tower if that process consumes less energy or costs less.
Assuming a constant ventilation flow rate (that satisfies ANSI/ASHRAE Standard 62.1 [ASHRAE 2004b]) and knowing that the supply flow rate is already determined considering the building cooling load
(not a variable in Equations 5 and 6), the coil cooling load is a function of ERV sensible and latent effectiveness.
In addition to active daylight harvesting, occupancy sensors are deployed throughout the building to ensure that lights stay off while spaces are unoccupied, further reducing the building cooling load
The differences in these methods lie mainly in how the instantaneous building cooling load
is measured (Honeywell 1997).