Required capacity of receiver tank
Selection when adding a compressor
Precipitation amount of drain

Required capacity of receiver tank

This is a calculation example for determining rough estimate of required receiver tank capacity.

t1+t2=

Load ‧ Unload cycle (load time + unload time)

Example: For SG IV, t1 + t2> = 0.5min (30 seconds or more)

Qs=

Compressor discharge rate

Pa=

Absolute suction pressure (high pressure = 0.101Mpa)

D=

Difference between upper limit pressure (PH) and lower limit pressure (PL)

x=

Load factor (air usage rate for compressor discharge air amount Qs)

* When the load factor is 50%, the capacity of the tank is maximized.

Vr=

Receiver tank capacity

Disclaimer: The calculation results are for reference only and we are not responsible for any results produced using the calculations.

Selection when adding a compressor

To give a simple calculation of how many m3 / min of compressor should be added when you want to keep a higher pressure in a situation where the amount of air used is large and the pressure is down. This is a calculation example.

V2 ≧ V1 × ( 

 P2＋0.1013

 P1＋0.1013

-1)

P1

Current line pressure

P2

The pressure you want to keep

V1

Total amount of current compressor

V2=

Amount of compressor to be added

Disclaimer: The calculation results are for reference only and we are not responsible for any results produced using the calculations.

Precipitation amount of drain

The maximum amount of water vapor contained in the air (saturated water vapor amount) increases as the temperature rises and decreases as the pressure increases. Therefore, when air is compressed, drainage is deposited.

Condition: 100% road operation

a

Compressor discharge air volume

b

Compressor operating time

1) Amount of water contained in the intake air of the compressor

Suction temperature

c

Saturated water vapor amount

d

Relative humidity

e=c*d

Water content in suction air (m3 / min)

f=a*b*e*60/1000

Water content in the intake air of the compressor

2) Amount of water contained in the dryer

High pressure dew point (see [Fig. 1] for conversion from pressurized dew point)

g

Saturated water vapor amount

h=a*b*g*60/1000

Water meter included in the dryer output

Example: When the pressure dew point is -15 ℃, the pressure dew point at 0.39Mpa is about 6 ℃.

3) Amount of drainage deposited from the dryer

f-h

Disclaimer: The calculation results are for reference only and we are not responsible for any results produced using the calculations.