A Circulator Is Not A Pump

Bob Harper

The human heart is a vortex circulator buffer- not a 'pump' in the literal sense. Read Dr. Tom Cowan's "Human Heart Cosmic Heart" book. You'll also learn a lot more about current 'medical' issues. He claims the water in the blood moves it along by charges and the heart buffers this force to balance flow. Interesting concept.
We do have positive displacement pumps, such as a rotary gear and piston as well as negative presssure such as centrifugal ones. The main thing to understand is that mass(water) flows from one place to another by a pressure gradient. Now, that pressure may be hydraulic pressure, static pressure or a vacuum pulling it. When you enlarge a pipe, the mass flows in happily under reduced pressure. When it encounters a vena contracta or constriction, flow drops off while pressure increases.

Blood vessels, being smooth muscle, have the unique ability to dilate and constrict on command. When frightened, your adrenaline (epinephrine) causes vasoconstriction. This reduces blood flow to the periphery resulting in the skin appearing blanched white( as a ghost). This is why your toes get cold when you smoke cigarettes in the cold. Conversely, a sudden vasodilation causes the perfusion pressure in the brain to drop and so do you.

Ask any fire engineer about friction loss from small diameters, vena contracta's, nozzles, kinked hoses, etc.

Fun discussion.

Jamie Hall

Last I looked, the human heart is a semi-positive displacement pump, with characteristics similar to a diaphragm pump. Go back to med. school, or if you are already a doctor, kindly stay out of engineering.

leonz

Firefighting equipment engineers major concerns are with trying to obtain mass flow where the smallest hoses are used first and then the next size up and as a last resort connecting pressure hoses feeding the pumper to a buildings FDC(fire hose connection)/standpipe as a last resort or in addition to using hydrants and large diameter hose and employing pumper mounted Waterus and Hale fire pumps and eventually using deluge guns for fire knockdown.

EdTheHeaterMan

Everyone is missing the point.
No one is getting it right.
The object is being overlooked.
The main idea is lost.
Has anyone actually read the original Post?
Is this helping in any way?
W. T. F. !

That stands for Water That Flows

What did you think I meant?

.

hot_rod

EdTheHeaterMan said:

Everyone is missing the point.
No one is getting it right.
The object is being overlooked.
The main idea is lost.
Has anyone actually read the original Post?
Is this helping in any way?
W. T. F. !

That stands for Water That Flows

What did you think I meant?

.

whiskey tango foxtrot

Bob Harper

Jamie Hall said:

Last I looked, the human heart is a semi-positive displacement pump, with characteristics similar to a diaphragm pump. Go back to med. school, or if you are already a doctor, kindly stay out of engineering.

Wow! Thank you for that kind, considerate response Jamie. Dude, you really have a chip on your shoulder. I offered the opinion of a cardiologist who wrote about it. Grow up.

EdTheHeaterMan

Bob Harper said:

Jamie Hall said:

Last I looked, the human heart is a semi-positive displacement pump, with characteristics similar to a diaphragm pump. Go back to med. school, or if you are already a doctor, kindly stay out of engineering.

Wow! Thank you for that kind, considerate response Jamie. Dude, you really have a chip on your shoulder. I offered the opinion of a cardiologist who wrote about it. Grow up.

Play nice boys!

Erin Holohan Haskell

EdTheHeaterMan said:

Bob Harper said:

Jamie Hall said:

Last I looked, the human heart is a semi-positive displacement pump, with characteristics similar to a diaphragm pump. Go back to med. school, or if you are already a doctor, kindly stay out of engineering.

Wow! Thank you for that kind, considerate response Jamie. Dude, you really have a chip on your shoulder. I offered the opinion of a cardiologist who wrote about it. Grow up.

Play nice boys!

Yes, thank you.

HomerJSmith

@Lance sez,

All pumps are pumps. How we use them is defined by their application or purpose.

I think is right. A pump moves a fluid against static pressure and a calculator moves a fluid without a concern for static pressure. That's my thinking and I'm sticking with it. But, I'm tired of pushing the difference. Tired of fighting the general consensus that everything is a pump.

delcrossv

Been calling them pumps for a long time.

ChrisJ

hot_rod

ChrisJ said:

Looks like a stone to me.

Lance

In defense of all, I enjoy the arguments and discussions whereby we offer our various viewpoints and reasons for what we know. Often, it's just semantics, but we must all know the whys and the differences if we are going to understand each other. On the farm I learned different words for the same things, depending on who I talked to. I made sure to use the term they understood. I like sameness just as I like differences. There are men, then there are the others. I had a computer programmer work with me, and I know little in their field, but I soon found out his forward slash was actually a backward slash. Any Typist from the 40's would know that. Fixing his nomenclature error made his instructions finally work. We are after all a technical industry.

EdTheHeaterMan

@Lance You are obviously outstanding in your field! As are many farmers from time to time.

Lance

Ed, the most amazing tool I ever saw on the farm was when my boss took a spark plug out of the tractor engine and screwed in a hose to the plug's socket. He turned the engine on and the other end of the hose he inflated the tractor's tire. Blew my mind as I had never heard of such a thing. Later I realized the more I learned, the less I really knew about everything. When you are all alone in the mountains and you need help, you soon realize the only one who can help is yourself. So, you make it work. And that's what I do. Being that compliments are rare; it is truly a treasure to receive one. Thanks a bunch for the compliment.

jumper

Lance said:

Ed, the most amazing tool I ever saw on the farm was when my boss took a spark plug out of the tractor engine and screwed in a hose to the plug's socket. He turned the engine on and the other end of the hose he inflated the tractor's tire. Blew my mind as I had never heard of such a thing. Later I realized the more I learned, the less I really knew about everything. When you are all alone in the mountains and you need help, you soon realize the only one who can help is yourself. So, you make it work. And that's what I do. Being that compliments are rare; it is truly a treasure to receive one. Thanks a bunch for the compliment.

Fill the tire with fuel air mixture?

JDHW

Years ago there was a motoring program on extreme vehicles. In one (I think Iceland) they were climbing snow/ice covered mountains with customised pickup trucks with massive tyres at low pressure. One of the tyres deflated and the solution was to spray in lighter fuels (butane) and then a match. Very fast and effective and saves money on a barber.

John

leonz

Some folks still use propane or acetylene to seat the bead on tires by just laying the tire and rim on the ground and squirting gas in the tire and standing back as they throw a lit match on the tire.

leonz

jumper said:

Lance said:

Ed, the most amazing tool I ever saw on the farm was when my boss took a spark plug out of the tractor engine and screwed in a hose to the plug's socket. He turned the engine on and the other end of the hose he inflated the tractor's tire. Blew my mind as I had never heard of such a thing. Later I realized the more I learned, the less I really knew about everything. When you are all alone in the mountains and you need help, you soon realize the only one who can help is yourself. So, you make it work. And that's what I do. Being that compliments are rare; it is truly a treasure to receive one. Thanks a bunch for the compliment.

Fill the tire with fuel air mixture?

This was the very common way to inflate a tire.

Jamie Hall

jumper said:

Lance said:

Ed, the most amazing tool I ever saw on the farm was when my boss took a spark plug out of the tractor engine and screwed in a hose to the plug's socket. He turned the engine on and the other end of the hose he inflated the tractor's tire. Blew my mind as I had never heard of such a thing. Later I realized the more I learned, the less I really knew about everything. When you are all alone in the mountains and you need help, you soon realize the only one who can help is yourself. So, you make it work. And that's what I do. Being that compliments are rare; it is truly a treasure to receive one. Thanks a bunch for the compliment.

Fill the tire with fuel air mixture?

Yep. Works fine. Beats hauling an air compressor out to the back forty...

I've never been too keen on seating beads with propane. It usually does work, but... when it doesn't... hope you're not too close.

EdTheHeaterMan

Jamie Hall said:

jumper said:

Lance said:

Ed, the most amazing tool I ever saw on the farm was when my boss took a spark plug out of the tractor engine and screwed in a hose to the plug's socket. He turned the engine on and the other end of the hose he inflated the tractor's tire. Blew my mind as I had never heard of such a thing. Later I realized the more I learned, the less I really knew about everything. When you are all alone in the mountains and you need help, you soon realize the only one who can help is yourself. So, you make it work. And that's what I do. Being that compliments are rare; it is truly a treasure to receive one. Thanks a bunch for the compliment.

Fill the tire with fuel air mixture?

Yep. Works fine. Beats hauling an air compressor out to the back forty...

I've never been too keen on seating beads with propane. It usually does work, but... when it doesn't... hope you're not too close.

Then that farmer is no longer outstanding in his field. More like on his A$$ in his field

Lance

OUTSTANDING IN HIS FIELD, HILARIOUS. More like doing aerial surveying. Love it!