Measurement And Calculation of Pressure Drop Flashcards
what is the code maximum pressure drop for low pressure gas lines
in inches of w.c
1
what is the code maximum pressure drop for low pressure gas lines
oz/in2
.578
what is the maximum allowable pressure drop on a low pressure natural gas or propane in stallion?
one inch water coloum
how would an undersized gas line be identified
if the pressure drop exceeds one inch water coloum
list 7 factors that affect pressure drop
fitting and valves length of pipe type of pipe initial gas pressure type of gas volume of gas flowing reaming
pressure drop is also referred to as _____ and _____
pressure loss and pressure differential
you have identified an undersized gas line. what actions would you take you take to correct this problem and why?
increase the gas line size. it is the only way to ensure enough gas to the appliance.
what 2 test are done to determine pressure drop
the standing pressure
the operating pressure and calculate the difference
how would pressure drop be affected by the following measures
increase line pressure
an increase in the initial gas pressure will cause an increase in pressure drop
how would pressure drop be affected by the following measures
increase gas flow
an increase in gas flow will result in an increase of Pressure Drop
how would pressure drop be affected by the following measures
increase line length
as the line length increases the friction increases causing in increase and pressure drop
increasing the number of fittings
as the number of fittings increase the friction increases causing in increase in pressure drop
how would pressure drop be affected by the following measures
decreasing line size
decreasing line size will increase the friction increases causing in increase in pressure drop
how would pressure drop be affected by the following measures
using un reamed pipe
burrs left in the inside of the pipe will cause an increase in friction which will result in an increase in pressure drop
A regulator and normally would have an inlet pressure of ______ and an outlet pressure of ________.
12-80
7 to 14 in w.c.
