Source

kargupy / README.mkd

Energy Usage Calculator (EUC) / Kargupy

Build Version 0.8 EUC/Kargupy Documentation (lang=en-US)

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EUC/Kargupy Screenshot

Intro

  • Calculate home energy usage per day and month
  • Estimate energy cost which will be paid monthly
  • Help saving energy by knowing estimation
  • Calculation is not from live data or history
  • Based on maximum possibility
  • Accurate prediction is not guaranteed

Base Formula

VA = W
KVA = KW
WHn = W * H
DWH = WH1 + .. + WHn [NEA]
MWH = TWH * 30
MKWH = MWH / 1000
MB = FKWH * P

Additional Formula

DWH < VA
Based on maximum usage & time per day
Possibility : Result - 50 %

Declaration

VA = Volt-ampere (VA)
W = Watt (W)
WHn = Watt of n / Hour (Wh) [Limited to 24]
DWH = Daily Watt / Hour (Wh) [Limited to VA]
MWH = Monthly Watt / Hour (Wh)
MKWH = Monthly KiloWatt / Hour (kWh)
MC = Monthly Cost (Rp)

Usage | Monthly | Tax

>= 6600 VA = Non-Subsidy = Rp 1.000 / kWh
<  6600 VA = Subsidy     = Rp   600 / kWh
TP = 5 % = 0.05

Input Example

[Separator I]
[Title]
[Separator II]
- Name : Person
- Household Power (VA) : 2200
- Number of electronic appliances : 3 [NEA]
  Electronic appliances list :
  EA 1 | Power (Watt) = 10
  -    | Usage (Hour) = 1 [Limited to 24]
  -  2 | Power (Watt) = 20
  -    | Usage (Hour) = 2
  -  3 | Power (Watt) = 30
  -    | Usage (Hour) = 3

Process Example

WH1 = 10 * 1 = 10
WH2 = 20 * 2 = 40
WH3 = 30 * 3 = 90
DWH = 10 + 40 + 90 = 140
MWH = 140 * 30 = 4200
MKWH = 4200 / 1000 = 4.2
MB = 4.2 * 600 = 2520

Output Example

[Separator II]
Your name         = Person
Household power   = 2200 VA
Electronic 1 Watt = 10 Wh
Electronic 2 Watt = 40 Wh
Electronic 3 Watt = 90 Wh
Daily   Watt Hour = 140 Wh
Monthly Watt Hour = 4200 Wh
Monthly kWh       = 4.2 kWh
Monthly Price/kWh = Rp 600
Monthly Bills     = Rp 2520
[Separator I]

Future Formula

I = V / R
V = I * R
P = I^2 * R
P = V^2 / R
W = I^2 * R * t
W = (V^2 * t) / R
W = P * t
TAX = MP + (MP * TP)

Future Features

  • Naming each electronic appliance item.
  • Using future formula
  • Specific tax by place & location
  • Pluggable Authentication Module (PAM)

Reference

Future reference

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