I would like to know if there is any available data for the dynamic viscosity of normal saline at about 72 F? The CRC Handbook has some data for 5% solutions. I also have a published equation, which may be OK. Ideally, I would like to know if someone just has the number handy and/or can aim...
I would like suggestions for an alternative to the use of a linear spool valve for high pressure water flow control. The valve needs to direct seawater at a pressure which can alternate between a few psig to about 1000 psig. The flow rate is up to 200 gallons per minute. The linear spool valve...
I am developing a water pumping type of application which will involve the use of an elastomer that acts as a diaphragm. The configuration of the diaphragm is not yet set, but it could be in the form of a cylindrical layflat type of tube. In its intended use, it will be cycled rapidly and...
I have a pressure vessel test rig that I need to lower down to about 400 meters in seawater. It is pretty much just a 12 inch diameter pipe that is about 6 feet long. It has end caps, so the whole thing is pretty much cylindrical. There are a few things attached to its exterior, so it has a...
When pumping water at depth in our project, we sometimes degas the water. This air and sometimes water ends up inside of a small presure vessel. The volume of the pressure vessel is about 30 liters. It would be desirable to discharge the air and the water into the surrounding seawater. The...
We are using a small axial piston pump to pump several liter per minute quantities of water against a pressure head of about 600 psi or so. If the system has to start up against the full 600 psi, it seems to just go into a dry running mode of operation. If we gradually increase the back...
We have set up a system to use a 12 volt battery to run a 3/4 horsepower 208 volts three phase motor. The system as currently laid out is as follows: A 12 volt lithium ion battery pack is used to supply power to a 2500 watt modified sign wave inverter which provides 120 volt AC power to a VFD...
I am trying to design some enclosures for equipment I intend to locate on or near the sea floor at a depth of about 1300 feet. I need to figure out how best to design these enclosures so that they do not implode due the the high ambient pressure. My question is, is there a good reference on the...
I am new to this forum, and am asking my first question. I am interested in learning as much as I can about the load-bearing and anchoring capacity of the sea floor in a certain area. At present, all I have are dried sea floor core samples. These were taken from about 400 meters depth off of...
