To find out pressure drop in a coil
To find out pressure drop in a coil
(OP)
I have to design a coil for limiting the oil flow to 50 cc per minute using 1 mm dia tubing(coil) where upstream pressure is 70 bar and desired press is 38 bars.Whats the length,coil dia??? any help ???





RE: To find out pressure drop in a coil
RE: To find out pressure drop in a coil
Could you pls explain me how did you calculate the length of the coil?
Thanks,
Chem55
RE: To find out pressure drop in a coil
You have a tubing of a known ID and pressure drop (32 bar). Determine the length such that the flow is 50 cc/min. Since you know the flow, you know the Re and therefore the friction factor to solve the problem.
RE: To find out pressure drop in a coil
The new transition Reynolds No. can be calculated by the equation
Re(trans) = 2100[1+12(D/Dc)1/2], where Dc is coil diameter and D is pipe diameter.
This formula is applicable in the range,
10<Dc/D<250.
Believe it or not : It is believed that Archimedis single handedly sailed the 4000 ton ship Syracusia from the dock when dock workers failed and quoted his famous saying.
RE: To find out pressure drop in a coil
The Dean No. is given by De = Re/(Dc/D)1/2
and the corrected friction factor is standard for laminar flow as in normal case and for turbulent flow,
fc/f = 1 + 0.09[De1.5/(70+De)]
Regards,
Believe it or not : It is believed that Archimedis single handedly sailed the 4000 ton ship Syracusia from the dock when dock workers failed and quoted his famous saying.