Calculating Air Conditioner Energy Usage; Calculating Loaded Distribution - Panasonic CZ-256ESMC2 Operation Manual

10 Calculating air conditioner distribution

10.2 Calculating air conditioner energy usage

Calculate electricity/gas usage of entire distribution group
Electricity usage for distribution group = Pulse meter (electricity) count value × Pulse unit
amount (kWh)
Gas usage for distribution group = Pulse meter (gas) count value × Pulse unit amount (m
Calculate electricity/gas usage of indoor units
Electricity usage for indoor unit = Electricity usage for distribution group × Electricity
consumption distribution ratio for indoor unit
Gas usage for indoor unit = Gas usage for distribution group × Gas consumption distribution
ratio for indoor unit
The usage is rounded to two decimal places and displayed.
See "About distribution ratios and energy usage" in "12 Supplementary Information".
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10 Calculating air conditioner distribution

10.3 Calculating loaded distribution

Data ow
[Out door unit]
Calculation:
power T2
gas TG
3
) gas for power generation PG
standing-by power TS
energy saving-consideration power T3
energy saving-consideration gas TG3
power at night by ice heat accumulation TC night
high-pressure saturated temperature HPS
1 T2, TG, PG, TS
T3, TG3, and TC night
[Adaptor]
Calculation:
All through
Operation capacity PINb =
7 T2, TG, PG, TS
T3, TG 3, and TC night
[Intelligent Controller]
Setting: Heater capacity H
Fan current added value B
Pulse unit @ e, @ g
•
Calculation: PIA = f (PS, T2, PINb, PINg)
PIA = f (PIA, TS, PS, W, H, R, B)
PGA = f (GIN, TG, PG)
* "f" means function. For example:
Operation capacity ratio D = f (SH, SC)
means that the operation capacity ratio is calculated using super heat SH and sub cool SC.
Calculation parameter
Indoor unit capacity (kW)
Indoor unit operation time
Indoor fan speed ratio (high, medium, low)
Outdoor unit operation ratio
(Power: detected using CT, Gas: neuro-calculation)
Standing-by power and various heater powers
Indoor unit loaded ratio (Calculated using the values
detected by multiple internal thermo sensor of indoor unit)
:parameters considered in distribution calculation
:parameters not considered in distribution calculation
[Indoor unit]
Operation time by fan speed R
Heater ON time W
Indoor capacity PS
Heat exchanger outlet and inlet temperature E1,
E2, and E3
Actual fan speed
2 HPS 3 R
4 W
5 PS
6 E1, E2, and E3
Actual fan speed
operation capacity ratio D = f (SH, SC)
fan speed converted value FI = f (actual wind speed)
super heat SH = f (E3, E1)
Partially through
sub cool SC = f (HPS, E1)
f (D, FI, and PS), PINg = 0
CIN = f (D, FI, and PS)
Count:
Power pulse count Pc
Gas pulse count Gc
7 PINb
PINg
7 R, W
GIN
8 PS
•
Power distribution ratio RPI = f (PIA')
Gas distribution ratio RGI = f (PGA)
•
Factor related to ice heat accumulation ICE = f (TC night, RPI)
Pice = f (Pc, @e)
•
Power usage PI = f (RPI, Pc, @e, ICE, Pice)
Gas usage GI = f (RGI, Gc, @g)
Simple distribution Loaded distribution
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9 Pc, Gc
(Overheat degree)