I have an application that uses a 100% outside air intake with a HW coil in the duct. The application calls for freeze protection with a pump. Problem is, there is no schematic on this. I've searched high and low for something with no results. Can someone provide me either a schematic or...
I'm looking at contract drawings that call out an expansion tank in the schedule for plumbing. However, on the riser diagram it shows a 'thermal absorber'. Is there a difference or are these interchangeable terms?
I came across these two definitions for Net Positive Suction Head and Net Positive Suction Head Available:
NPSH = p(s)/y + v(s)^2/2g - p(v)/y
and
NPSHa = p(atm)/y - h(e) - h(l) - p(v)/y
where:
p(s) = static pressure in fluid
y = specific weight of fluid
v(s) = velocity of fluid
g =...
I have a tank with deicing fluid and methane gas which collects at the top of the tank. I want to be able to alleviate any the pressure created from an incidental (static friction, etc.) ignition of the methane gas. Would a rupture disk be the right direction? Would you base the analysis...
Does anybody know of any wastewater standard (I am located in Long Island, NY) that has language regulating the placement of a force main directly above another force main?
Is there anyone that can clarify the difference between ASTM A 105 (Forgings, Carbon Steel, For Piping Components) and ASTM 234 (Piping Fittings of Wrought Carbon Steel and Alloy Steel For Moderate and Elevated Temperatures). To me wrought and forged mean the same, am I mistaken. Sorry if this...
The numbers I'm giving below are totally made up and are being asked for fundemental understanding only:
Say I want a pump that can pump a fluid 5 ft/s with a pressure of 5 psi;
1. I understand that the 5 ft/s is a direct result of how fast the blades of the impeller are pushing the water...
We are currently under contract for a project in which we would like to incorporate an epoxy coating, for protection of a wet well. The wet well itself will be precast and the epoxy coating, according to the specifications, should be applied 28 days after casting.
I am aware of the Sikagard...
