Current update:
Over the last few days, I have been doing some Googling on methods to produce synthetic fuels.
I was surprised at the progress that has been made, far past my original idea.
There is a working demonstration plant in Chile producing synthetic diesel fuel.
The feed stack is water...
A new Duramax 6.6 liter engine may reach 29 lps of turbo boost.
Simple arithmetic and a little rounding makes that an additional 2 X atmospheric pressure.
Simple arithmetic suggests that that would yeild an effective displacement of 11.88 liters.
But, in the real world, dynamic pressure flow due...
I need help on this one.
I have a no-name motion detector at a remote site.
The owner tells me that it is acting erratically.
What I have been told, I can't vouch for the accuracy of the statements. (That may be part of my problem)
This is a cattle watering system.
The motion detector is the...
Link
The fire is in Bonacca Town, not on the actual island of Guanaja.
Bonacca is built on a coral reef or cay about 1500 feet offshore from the north island of Guanaja.
There are no roads, only footpaths. The homes, many wood frame, are clustered tightly together.
There is no fire fighting...
Further to David's comment;
VARs cause increased line current which causes increased I2R losses.
If you send the VARs back to the source and cancel them there, you save some losses in the generator and avoid reduced KW capacity of the generator.
BUT
You haven't reduced transformer losses or...
Posted on behalf of Redsnake (Anna)
Anyone who can help me with this?
What is Stopfbuchsenschrauben, Gland bolts ??
What do they look like?
This is workrelated.
Probably not the right place to ask, but it's Friday and I feel a little lazy winky smile
Best Rergards Anna
Bill...
I have just had a query from an old friend.
She has put her home up for sale and the realtor has told her that her horizontal breaker panel is a violation of rule 240.81 and must be changed.
This is in Canada and we do not have a rule 240.81 in the Canadian Electrical Code.
Horizontal panels are...
A Snowbirds jet crashed shortly after takeoff in Kamloops, B.C., on Sunday. Capt. Jenn Casey, a public affairs officer with the Snowbirds, died in the crash. The pilot, Capt. Richard MacDougall, survived with non-life-threatening injuries.
Link to News Report
Link to Interview with a former Snow...
thread815-441658
Thai navy SEAL who took part in cave rescue dies after year-long infection
Link
Bill
--------------------
"Why not the best?"
Jimmy Carter
I am wondering if the slip frequency in either RPM or Hz below synchronous speed has the same effect on motor performance regardless of the actual speed.
Put it another way: Starting with a speed/torque curve of an induction motor, If we label the speed axis as slip speed, either in RPM or Hz...
We have a question in the motors forum as to the efficiency/inefficiency of a 600 HP centrifugal compressor running with continuous blowdown.
It may be that blowdown is being used for capacity control.
From an electrical perspective it seems wasteful to control the capacity by blowing off...
The following thoughts are always present whenever I am driving my truck taking my young cowboy to summer rodeos, at about $0.60 per mile for fuel.
Gee, I have a fairly new truck with an almost state of the art diesel engine.
I have dual sequential turbo chargers to improve efficiency.
But...
In regards to green house gases, how does CO2 compare with NOx?
How does CO2 compare to soot (carbon)?
Many of the EPA mandates to reduce NOx result in higher fuel consumption, which in turn leads to more CO2 emissions.
Is there a net gain or are we looking at a lower percentage of a larger...
The power stroke, specifically the 6.4L and the "Son of Powerstroke" the Maxxforce 7 have a reputation for early failure.
Past 40,000 to 60,000 miles you may be on borrowed time.
The failure progression as service manager explained it to me is
First;
The high pressure pump wears and puts metal...
In a recent thread we had some misunderstanding and disagreement concerning the rating of a generator when converted between three phase and single phase or between single phase and three phase.
I have recently encountered a generator that may clear up the misunderstandings.
KVA: Historically...
A comment on the obsolete two phase systems in another thread reminded me of an issue that has puzzled me for years.
There was a time years ago when we saw a lot of "T" winding lighting transformers. These were typically 25 KVA, 480 Volts to 120/208 Volts.
Many years ago when three phase systems...
Any comments from the plastics Gurus will be appreciated in the Engineers With Hobbies Forum.
PVC vs. CPVC
thread1528-434716
Thanks
Bill
--------------------
"Why not the best?"
Jimmy Carter
Will an EMP event destroy the standby generators even if they are not running at the time of the EMP?
Closer to home, will my old standby generator with a mechanical governor survive an EMP or is there a possibility that the EMP may take out the rectifier diodes in the battery charging...
For discussion:
A motor acts as an induction generator when the grid frequency is lower than the motor speed converted to frequency.
With a bolted fault, a motor that normally turns at 1750 RPM with a slip speed of 50 RPM will be seeing a slip speed of about 1750 RPM.
Is it valid to use the...
