Hi Ed,
Thank you very much for the reply. Chilled water is not an option sorry to say. And your totally right about the LN gas layer. I'm reading up on pool boiling from NASA tech reports and the heat transfer coefficient depends a great deal on that gas layer.
Thank You, Gordon
Hi Everyone,
For a test setup, I need to quickly cool JP-8 in a heat exchanger. Approximate Specifications are as follows:
Fluid: JP-8
Flowrate: 25.7 L/min (=6.8 GPM, 46 lb/min)
Inlet Temp of JP-8: 17.8°C (=64°F)
Outlet Temp of JP-8: 4.4°C (40°F)
Heat Transfer: 9 kW
I have calculated that I...
Greetings All,
My job is going to be doing some design work on an electronic system going into an Aircraft utilizing a 270 VDC buss. Therefore, we need a 270 VDC power supply capable of about 40-50 amps for test bench work. Does anyone know of a vendor/manufacturer that is making a 270 VDC...
Greetings All,
I have a question regarding Main Panel Breaker Sizing in relation to Installed Feeder Breakers. I have been told by a technician I trust that the installed feeder breaker sizes have to add up to equal or less than the rating on the Main Panel breaker. (Assumption: Main panel...
Hi Scotty,
I am trying to do a level shifter and your scale is exactly what I need (i.e. 0V = negative F.S, 1.5V = zero current, +3V = positve F.S.).
Gordon
Greetings All,
I need help in getting/designing a practical cicuit to convert a Bipolar (+/-) signal to a unipolar (+) signal. The particulars of the cicuit are:
I am measuring an Amperage from a wire using an LA100-P current sensor from LEM. The sensor runs off of a +-15VDC power supply and...
Yes, I can use cylinders for this project, just so long as they aren't greater than 12" in diameter, longer than 36" long and made out of steel.
Gordon
Hi All,
Does anyone know of a good vendor for small composite, titanium, or Aluminum Pressure vessel that would be off the shelf and not custom? Specs for pressure vessel:
-approx. 7000 Cubic Inch Capacity (can be smaller, I can string together a couple vessesl to reach my size goal)
- either...
Greetings All,
I need to find a low flow rate/low pressure seawater pump that can be used at a depth of 1500ft (approx fluid pressure = 750 psi). The flow rate for the pump needs to be approx. 1.35 - 1.5 Liters/min at an output pressure of approx. 25 psi (the output pressure is estimated and...
Hi All,
Does anyone know where I could find/purchase some 16"-18" aluminum piping, scedule 40 (preferably T6061 grade, but I can entertain other alloys. Minimum yield at scedule 40 needs to be a 30 ksi)? I don't need a lot of it (two seperate 6' long sections I think will do me fine). It is for...
Hi All,
I need help in finding a seawater seal. I have a unique application where I have two filtered (to 10 microns) seawater filled chambers. A shaft turning at 3000 RPM runs between the two chambers. Chamber #1 will vary in pressure from ambient to 750 psi. Chamber #2 will have a pressure...
