Calculating Air Conditioner Distribution; Calculating Simple Distribution - Panasonic CZ-256ESMC2 Operation Manual

10 Calculating air conditioner distribution

The Intelligent Controller calculates energy (electricity and gas) distribution ratios utilizing the
accumulated working time (T/S ON/OFF) or the capacity value of the indoor unit.
* T/S: Thermostat

10.1 Calculating simple distribution

Parameters as listed below are used to calculate simple distribution:
1 RHHi: accumulated operation time for indoor unit i (High fan speed)
2 RHi: accumulated operation time for indoor unit i (Medium fan speed)
3 RLi: accumulated operation time for indoor unit i (Low fan speed)
4 SHHi: T/S ON accumulated time for indoor unit i (High fan speed)
5 SHi: T/S ON accumulated time for indoor unit i (Medium fan speed)
6 SLi: T/S ON accumulated time for indoor unit i (Low fan speed)
7 Pi: Capacity of indoor unit i (in kW)
8 k: Weighing factor for power consumptions as T/S ON and OFF
9 aHH: Weighing factor for High fan speed
bk aH: Weighing factor for Medium fan speed
bl aL: Weighing factor for Low fan speed
* Accumulated operation time = T/S ON accumulated time + T/S OFF accumulated time
Index of indoor unit i power/gas consumptions is calculated.
Here, "TEi" and TGi" denotes the power and gas consumption indexes of the indoor unit i,
respectively.
When "Object of power distribution calculation" is "T/S ON + OFF time":
The power consumption index is calculated using "Accumulated operation time" and "T/S ON
accumulated time"; the gas consumption index using "T/S ON accumulated time"
• For GHP:
TEi = (RHHi x aHH + RHi x aH + RLi x aL) x Pi
TGi = (SHHi x aHH + SHi x aH + SLi x aL) x Pi
• For PAC:
TEi = { (RHHi x aHH + RHi x aH + RLi x aL) /k +
(SHHi x aHH + SHi x aH + SLi x aL)} x Pi
TGi = 0
When "Object of power distribution calculation" is "T/S ON time":
Both the power and gas consumption indexes are calculated using "T/S ON accumulated time".
• For GHP:
TEi = (SHHi x aHH + SHi x aH + SLi x aL) x Pi
TGi = (SHHi x aHH + SHi x aH + SLi x aL) x Pi
• For PAC:
TEi = (SHHi x aHH + SHi x aH + SLi x aL) x Pi
TGi = 0
• Weighing by wind speed is not carried out for models with their speed set only as High or only as High and low.
• Distribution ratios are not calculated when you have chosen not to perform distribution ratio calculations. (See "6.3.2
Setting the date, cut-off date, and distribution ratio calculation method")
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Formula 1
Formula 2
Formula 3

10 Calculating air conditioner distribution

Calculate electricity/gas usage index of entire distribution group
Let "TOTALe" be the electricity usage index of entire distribution group,
and let "TOTALg" be the gas usage index of entire distribution group.
Let "m" be the number of indoor units in the distribution group.
TOTALe = TE1 + TE2 + ··· + TEm
TOTALg = TG1 + TG2 + ··· + TGm
Calculate electricity/gas usage distribution ratio of indoor units
Let "REi" be the electricity usage distribution ratio,
and let "RGi" be the gas usage distribution ratio.
REi (%) = TEi / TOTALe × 100
RGi (%) = TGi / TOTALg × 100
Calculate electricity/gas usage distribution ratio of tenant j
Let "NEj" be the electricity usage distribution ratio of tenant j,
and let "NGj" be the gas usage distribution ratio of tenant j.
Let "n" be the number of indoor units of tenant j.
NEj (%) = RE1 + RE2 + ··· + REn
NGj (%) = RG1 + RG2 + ··· + RGn
Distribution ratios are rounded at the third decimal place and shown to the second decimal place.
* The following table shows which of the formulas 1 to 3 on the previous page are used by the two
distribution modes.
T/S ON+OFF time
distribution mode
Electricity
1
GHP
Gas
2
Electricity
3
PAC
Gas -
Electricity
3
HOT
Gas
2
See "About distribution ratios in 12 Supplementary Information".
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T/S ON time
distribution mode
2
2
2
-
2
2