Turbo Exhaust from Diesel Cars and Trucks

You may as well use a boat anchor. The mass of a turbocharger turbine in relation to the energy available from the swept disk in a wind application is such that the device even turning is highly doubtful. The enthalpy available from the exhaust of a reciprocating engine is much high than that from a similar swept stream of natural wind.

osborne83

Good answer. (9 out of 10)

The enthalpy available from the exhaust of a reciprocating engine is much (too) high or much (higher) than that from a similar swept stream of natural wind.

This could give raise to interpretation but I know what you mean.

I have been reading applications for government grants lately and must have caught some virus. Pedantic? For sure, but with good intentions.

Good answer, Ky.

Your seeking turbo boost and manifold pressure, google the correct terms for fun or try wikipedia search 'turbocharger'

A pinwheel on a stick would work more efficiently. Your time would be better spent by adding vane or number of blades area to the propellers of current wind generators to produce more torque at the current rpm ranges ........ May be add variable pitch to it as well. Maybe add wing tip traps to decrease the air that inefficiently falls away at the prop OD where efficiency should be at its' best. Maybe increase the hub size or ratio to give it all some strength.

Ok guys, before ya shoot it down, let me explain it....I have a mechanism for tracking the wind direction, concentrating the wind into a duct, allowing for a more efficient transmission of energy to the generator than the current wind turbine blades. Im looking into - turbo "style designs", squirel cage style designs, paddle wheel, and pentle wheel. Im looking for air speed and preasure inside a turbo...been to wikipedia. Anybody know anything off the top of their head, don't want to be any trouble.

Bravo! yeah it's a dated expression but I too have pondered same thoughts.

About twenty-five to forty pounds turbo-boost pressure is optimal on many 12.7-14 liter diesels engines, though effective manifold pressure varies at about twelve to twenty-eight pounds in same instance I think I think.

now thats a good answer to a stated question. thx any idea on cfm, orphus size, or air speed?

Those answers would be specific to a particular model engine and type/size/application of turbo-charger in use. In short , try technical data statements of turbocharger units.

Becuase the power available for your purpose is several orders lower then the power you have it may be best to use a pelton type. The trick to the propeller types is the massive area of exposure to the wind. If you can concentrate wind force at 100:1 then you can think about the principles of axial compressors. Todays turbo charger are 30 to 60 hp centrifugal compressors designed to use hot expanding gasses on the enrgy turbine side and a compressor on the intake manifold side. They have no potential application in the system you described. Hook one up to a large compressed air tank and cram air to it through a ball valve regulator until you have usable power from an alternator and you will see what I mean.

That's absolutely it. The energy recovery is ALL about mass flow through the system. Even in a full gale, there just isn't that much energy available from a six-inch diameter stream tube.

The opening on the input side is aproximatly 6 feet and 10 feet on the larger model, the turbo "style" fan will be made of light weight composite, ...like I said Im just looking for the basic data so I can compare a turbo "style" design To others designs like a paddle wheel design, squirel cage type, or yes a pelton wheel type.

I wonder if in the case of massive volumes of air, it would be better to think of air as a fluid, and do your testing in water, and come up with a turbine that looks more like a tidal generator? just an idea. I'm sure you've already thought of.

Hi chris, Im good w/ visualizing the big concept, its putting all the details together that I need help on. The water turbine model is a good suggestion, Im still considering the pelton wheel.

I think you have not adequately defined the scale of compression required in your process.

Im not ready to tell all yet, patent is pending, but Ive got a large duct of air, compressed and channeled by a "funnel", I have to apply this air to a blade design that will transmit its power to a generator, Its the blade or fan design that Im working on, Im trying to save research time by starting with an existing design, thats why I was looking for the air speed and psi data.

Going along with Chris's suggestion though not quite, have you considered the impeller design configuration of water jet's or specifically that of torpedo propulsion?

Im not familiar w/ torpedo propulsion designs, Im open to anything that would transmit the force of ducted air to a shaft....in the most efficient way, I think it could even have a variable position of blade contact. Air strikes the blades further from the shaft to get leverage when the wind is slow and closer to the shaft when wind pressures are high.....air flow is moving at a tangent to the shaft....

Precisely a variable pitch impellar

This and This comes to mind

The first "This" did not load, the second is a very good design and I will put it on the list of possibles to analize. Thx very much.