I think I am having brain fade! I am trying to estimate the swept volume of a scroll compressor. I will use simple values for calculation.
Assuming the diameter of each scroll is 4" and the scroll fin height or depth is 2". If I remember correctly, the scroll will intake 360* of rotation...
I am working on some basic calcs for heat transfer from polyethylene pipe. My numbers are not working out right so I need a little refresher.
The PE pipe would have a TC of about .46 W/(m.*C). to get to BTU/(hr.ft.*F), I mult by .5779 to get .266.
Assuming 10sf of PE pipe, and let's...
Thanks for that. From the calcs I have run, this structure of Al will not hold much energy as heat.
However, more importantly, the dissipation. I determined the U value as 36 (btu/ft2 F)but I cannot remember if I would use the dT above ambient? IE Ambient is 100F structure is 110F...
I am curious if someone can help be estimate heat sinking and dissipation in an Aluminum structure? What I am trying to do is is cool a hot liquid by just allowing it to heat the structure it is in since there is a reasonable amount of mass. Though the Aluminum structure is not designed...
We have a vibration from a transmission that is showing up in some machined parts. We know the transmission needs to come apart but will need to schedule it for this summer. Has been this way for years. We need to find a quick remedy to at least reduce the problems. Transmission already sits...
Well, they might be more of a tendency but in a nutshell, I have a water source heat pump unit that we removed and stored. It is now being exposed to freezing temps. Just NOW i realized that I never looked into freezing issues with the coil. I am curious if water has a place to expand, aka...
I am wanting to build a small scale Redox flow battery as a fun project. I know there is a list of flow batteries right now and I am trying to decide on one where the elements used are economical as well as one where the watt density is reasonably high. At least twice lead acid anyway...
here is a short list of options we have considered.
Ethanol production from the heat energy from wind
Hydrogen production from the electric through electrolysis
Direct battery storage
Hydro pumping (not practical in flat ground)
Bio diesel
lots of options but the battery just...
We are working on some design ideas to hopefully eventually get our shop and home off the grid with independent power. We are in one of the best locations for wind generation but energy storage becomes an issue and a grid tie system is simply impractical and will not obtain our goals.
the...
Water "divining" or "witching". What is the basis behind it?
Before I start, let me say that I am hugely skeptical but we do have an issue where finding a good hitting water well might be tough so thought I might check...lol
For those that are unaware, people are basically using pieces of...
Condensation in certain cold weather conditions is our primary concern. It would not affect our circuits at all but does not project an image of quality. N is lighter than air so that would not fit our gravity fill considerations here. We are in a fairly humid climate several months out of...
We are working on an outdoor display unit. It will operate at a wide range of temps. There is not a requirement to purge air from the encasement but would be a smart decision I think. my thought was to use a gas that is very dry and heavy enough to simply purge the air and sit in the device...
I did some testing with PVC by adding to the end of the pipe and then a T where I can add variable lengths of piping. I am not real sure if this will prove out everything here but at my calculated 36" long which is 1/4 of the wave length, it did very little. When I pulled it down to 12" on...
I did not even think about a moment arm added with a mass on the end! That could really help.
basically there is already a resonator muffler still in the system that was very likely tuned to kill most of the major problems from the engine. I am highly suspecting the active vibrations of...