What are the pros and cons for using a submersible pump instead of the typical vertical turbine pump?
I read that submersibles have problems with thrust bearing load limitations during starts and stops, oil seals leakage, maintanence repair costs, motor efficiencies etc.
My wet well is about...
Re: Pump Intake Design ANSI/HI 9.8
Subject: Minimum Submergence requirement to prevent surface vortex
I have a vertical suction pipe with a bell on the end of it located in a dished tank containing suspended solids slurry. I want to eliminate the need for a vortex breaker at the suction...
API 520 Appendix E
Emperical expressions for Y sonic, Ksonic
I tried to cut and past my calculation for this but it wouldn't take.
I made a program for this.
Does anyone have experience measuring convection coefficients using a heat flux sensor with an attached thermocouple and heat sink?
I have a mix tank and I'm trying to measure the convection coefficient on the inside of the tank wall.
I have placed an ice bath on the outside of the wall to...
These questions are related to the minimum process liquid contact temperatures during tank cooling.
I am worried that the low tank wall temperature effected by the external cooling jacket may cause aluminum oxide precipitation from the 5.6 M caustic solution inside the tank.
I am designing a...
I will be mixing constantly. I have to make a correction. The total SSC is 5 wt% of the mixture. I should not have mentioned the absorbed solids. They will stay in solution. I am only concerned about the suspended solids concentration (SSC). I want to measure the time it takes to get a...
I want to measure the blend time of a solution containing 5 wt% total solids. About half of the solids are suspended. I defined the blend time as the time it takes to resuspend and totally blend the suspended solids from an initial sludge level. The solution is opaque and dark and the solids...
Roger that on the feed and bleed.
I am thinking that the feed into the recirculation loop should be a variable flow rate to make up the difference between the bleed and the permeate flow rate. Our feed and bleed is set up to maintain a maximum suspended solids concentration in the...
I have done similar relief flow requirement calculations and I found that the APA 520 section 3.6.3 Sizing for subcritical flow: Gas or Vapor equations produce the same results as those in API 2000 using the coefficient of discharge method.
SCFH is determined from heat and the relief capacity...
Sorry if this is already covered. The thread I found was closed and now I have this same question.
I need to provide relief for an air receiver. The only credible over pressurization scenario is fire case while vessel is valve closed isolated and heated by fire. This includes the inlet to the...
EGT01 is correct. In order to convert the relief flow rate of your service gas or vapor, you need to work backwards through the appropriate area sizing equations provided in the ASME Section VIII Appendix 11.
It can not be determined by an equivalent mass ballance since the area sizing...
Under what conditions will these isolation valves be closed? There existence can be justified only if one of the 2 exceptions to ASME Section VIII Subpart UG-135 (d) applies.
1. when these stop valves are so constructed or positively controlled that the closing of the maximum number of block...
I want to be able to determine the zone of influence of a submerged jet of liquid impinging 90° perpendicular to a flat plate inside a tank with a known liquid density and a known working liquid level. I suppose I am looking for a velocity profile in two dimensions with the assumption that there...
