Archive for 2018

Duct Size Calculator

Temperature:  [°C]
Flow rate: [m3/hr]
Duct Size:
Select Pipe Type:
Internal Diameter:
 [mm]
Width:
 [mm]
Roughness height: [mm]
Pipe Lenght: [m]
Equivalent diameter:
[mm]
Flow Area:
[m2]
Flow Viscosity:
[Kg/m.s]
Flow Velocity:
[m/s]
Flow Density:
[Kg/m3]
Reynolds Number:
Friction Factor:
Velocity Pressure:
Pa
Pressure drop:
Pa/m
Total pressure drop on Pipe:
Pa


Full load current calculator

LOAD INFORMATION
Voltage (V):
Load (S):
Power factor (cosΦ):
Efficiency (E): [%]
For motor only
Frequency (F): [Hz]
Poles (P):
Motor Syncronus Speed:
[Rpm]
The result
Full load current:
[A]
Parameters:
The full load current calculator calculates following as:
3-phase AC supply:
 - Load is kW is calculated as:
 - Load is kVA is calculated as:
 - Load is HP is calculated as:
1-phase AC supply:
 - Load is kW is calculated as:
 - Load is kVA is calculated as:
 - Load is HP is calculated as:
DC supply:
 - Load is kW is calculated as:
 - Load is kVA is calculated as:
 - Load is HP is calculated as:

Air Conditionner

Air Condition Size Calculator for Room
ROOM SIZE:
Length:
[m]
Width:
[m]
Height:
[m]
Total Area:
[m2]
Required Cooling Load of Room:
[Btu/Hr]
COOLING FACTORS:
Capacity (Number of People):
Kitchen in the room:
Windows in West or East side: Area: [m2] Q'ty:
Windows in North side: Area: [m2] Q'ty:
Windows in South side: Area: [m2] Q'ty:
Blinds on The windows:
Total Electrical Equipment Load:
[Watt]
Total Lighting Fixtures Load:
[Watt]
SIZE OF AIR CONDITIONER:
Total Cooling Capacity Required:
[Btu/hr]
Required A.C (HP):
[Hp]
Required A.C (KW):
[kW]

AF-Pressure

Dynamic pressure:
                 
where
- P : Dynamic pressure (N/m2 (Pa), lbf/ft2 (psf))
- ρ : Density of fluid (kg/m3)
- v : Velocity (m/s, ft/s)

Pressure drop:
- ƒ : Friction Factor
- L : Length of Pipe (m)
- D: Pipe Diameter (m)
- ρ : Density of fluid (kg/m3)
- v : Velocity (m/s)
Pressure Calculator
Density (ρ): [kg/m3]
Velocity (v): [m/s]
Internal Diameter (D): [mm]
Length of Pipe (L): [m]
Friction Factor (ƒ):
Dynamic Pressure (p): [Pa]
Pressure drop (Δp): [Pa]

AF-Friction factor

Darcy friction factor formulae:


 - Re: Reynolds number
 - D: Pipe diameter (m)
 - ε: Roughness height (m) (More detail show as table below).

Darcy friction factor calculator
Reynolds Number (Re):
Roughness height (𝜀): [mm]
Internal Diameter (D): [mm]
Friction factor (ƒ):
Roughness height table:
Surface
Absolute Roughness height ε
(x10-3 m) or (mm)
Copper, Lead, Brass, Aluminum (new)
0.001 - 0.002
PVC and Plastic Pipes
0.0015 - 0.007
Stainless steel, bead blasted
0.001 - 0.006
Stainless steel, turned
0.0004 - 0.006
Stainless steel, electropolished
0.0001 - 0.0008
Steel commercial pipe
0.045 - 0.09
Stretched steel
0.015
Weld steel
0.045
Galvanized steel
0.15
Rusted steel (corrosion)
0.15 - 4
New cast iron
0.25 - 0.8
Worn cast iron
0.8 - 1.5
Rusty cast iron
1.5 - 2.5
Sheet or asphalted cast iron
0.01 - 0.015
Smoothed cement
0.3
Ordinary concrete
0.3 - 1
Coarse concrete
0.3 - 5
Well planed wood
0.18 - 0.9
Ordinary wood
5

AF-Reynolds number

The Reynolds number is defined as
where:
- ρ is the density of the fluid (SI units: kg/m3).
- u is the velocity of the fluid with respect to the object (m/s).
- L is the Internal diameter of piper (m).
- μ is the dynamic viscosity of the fluid (Pa·s or N·s/m2 or kg/m·s).
- ν is the kinematic viscosity of the fluid (m2/s).

The Reynolds number calculator
Air/Fluid Density (ρ): [kg/m3]
Air/Fluid Velocity (u):  [m/s]
Internal Diameter (L):  [mm]
Dynamic Viscosity (µ): [Pa·s or N·s/m2 or kg/m·s]
Kinematic Viscosity (ν):  [m2/s]
Reynolds Number (Re):

AF-Velocity

Fluid Velocity Calculator
Fluid Velocity Calculator
Air/Fluid Flow: [m3/h]
Air/Fluid Flow: [L/s]
Select Pipe Type:
Internal Diameter:
 [mm]
Width: [mm]
The Result
Pipe Area:
Fluid Velocity:

AF-Density

The density, the volumetric mass density, of a substance is its mass per unit volume of the Earth's atmosphere

 Air density calculation:
D: Density - (kg / m³)
P:  Pressure, Pascals : 101400 Pa
R: Specific gas constant , J/(kg*degK) = 287.05 for dry air
T: Temperature, deg C (°C)
Pressure:
Temperature:
 [°C]
Gases Name:
Density: [Kg/m3]
Water density calculation (T °C ):
Water density calculation

 Water Temperature
 [°C]
 Density
 [kg/m3]
Below table is density of liquids:
Liquid Temperature Density
(°C)(kg/m3)
Acetic Acid251049
Acetone25784.6
Acetonitrile20782
Alcohol, ethyl (ethanol)25785.1
Alcohol, methyl (methanol)25786.5
Alcohol, propyl25800
Ammonia (aqua)25823.5
Aniline251019
Automobile oils15880 - 940
Beer (varies)101010
Benzene25873.8
Benzil151230
Brine151230
Bromine253120
Butyric Acid20959
Butane25599
n-Butyl Acetate20880
n-Butyl Alcohol20810
n-Butylhloride20886
Caproic acid25921
Carbolic acid (phenol)15956
Carbon disulfide251261
Carbon tetrachloride251584
Carene25857
Castor oil25956.1
Chloride251560
Chlorobenzene201106
Chloroform201489
Chloroform251465
Citric acid, 50% aqueous solution151220
Coconut oil15924
Cotton seed oil15926
Cresol251024
Creosote151067
Crude oil, 48o API60oF790
Crude oil, 40o API60oF825
Crude oil, 35.6o API60oF847
Crude oil, 32.6o API60oF862
Crude oil, California60oF915
Crude oil, Mexican60oF973
Crude oil, Texas60oF873
Cumene25860
Cyclohexane20779
Cyclopentane20745
Decane25726.3
Diesel fuel oil 20 to 6015820 - 950
Diethyl ether20714
o-Dichlorobenzene201306
Dichloromethane201326
Diethylene glycol151120
Dichloromethane201326
Dimethyl Acetamide20942
N,N-Dimethylformamide20949
Dimethyl Sulfoxide201100
Dodecane25754.6
Ethane-89570
Ether25713.5
Ethylamine16681
Ethyl Acetate20901
Ethyl Alcohol (Ethanol, pure alcohol, grain alcohol or drinking alcohol)20789
Ethyl Ether20713
Ethylene Dichloride201253
Ethylene glycol251097
Trichlorofluoromethane refrigerant R-11251476
Dichlorodifluoromethane refrigerant R-12251311
Chlorodifluoromethane refrigerant R-22251194
Formaldehyde45812
Formic acid 10% concentration201025
Formic acid 80% concentration201221
Fuel oil60oF890
Furan251416
Furforol251155
Gasoline, natural60oF711
Gasoline, Vehicle60oF737
Gas oils60oF890
Glucose60oF1350 - 1440
Glycerine251259
Glycerol251126
Heating oil20920
Heptane25679.5
Hexane25654.8
Hexanol25811
Hexene25671
Hydrazine25795
Ionene25932
Isobutyl Alcohol20802
Iso-Octane20692
Isopropyl Alcohol20785
Isopropyl Myristate20853
Kerosene60oF820.1
Linolenic Acid25897
Linseed oil25929.1
Machine oil20910
Mercury13590
Methane-164465
Methanol20791
Methyl Isoamyl Ketone20888
Methyl Isobutyl Ketone20801
Methyl n-Propyl Ketone20808
Methyl t-Butyl Ether20741
N-Methylpyrrolidone201030
Methyl Ethyl Ketone20805
Milk151020 - 1050
Naphtha15665
Naphtha, wood25960
Napthalene25820
Nitric acid01560
Ocimene25798
Octane15698.6
Oil of resin20940
Oil of turpentine20870
Oil, lubricating20900
Olive oil20800 - 920
Oxygen (liquid)-1831140
Paraffin800
Palmitic Acid25851
Pentane20626
Pentane25625
Perchlor ethylene201620
Petroleum Ether20640
Petrol, natural60oF711
Petrol, Vehicle60oF737
Phenol (carbolic acid)251072
Phosgene01378
Phytadiene25823
Pinene25857
Propane-40493.5
Propane, R-29025494
Propanol25804
Propylenearbonate201201
Propylene25514.4
Propylene glycol25965.3
Pyridine25979
Pyrrole25966
Rape seed oil20920
Resorcinol251269
Rosin oil15980
Sea water251025
Silane25718
Silicone oil25965 - 980
Sodium Hydroxide (caustic soda)151250
Sorbaldehyde25895
Soya bean oil15924 - 928
Stearic Acid25891
Sulfuric Acid 95% concentration201839
Sulfurus acid-201490
Sugar solution 68 brix151338
Sunflower oil20920
Styrene25903
Terpinene25847
Tetrahydrofuran20888
Toluene20867
Trichlor ethylene201470
Triethylamine20728
Trifluoroacetic Acid201489
Turpentine25868.2
Water, heavy11.61105
Water - pure41000
Water - sea77oF1022
Whale oil15925
o-Xylene20880

AF-Viscosity

Water Viscosity Calculator:
Temperature (°C):
Salinity (ppt):
Pressure (bar):
Density ρ (kg/m3):
Dynamic Viscosity µ (Kg/m.s, Pa.s, N.s/m2):
Dynamic Viscosity µ (mPa.s):
Kinematic Viscosity (m2/s):
Gases Viscosity Calculator:
Select gases:
Temperature (°C):
Dynamic Viscosity: (Kg/m.s, Pa.s, N.s/m2):
Dynamic Viscosity: (mPa.s):
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