Steam Required to Run 1 HP Motor

Hello Guest,

This is going to take some calculations on your part, and I'm wondering if your knowledge level is sufficient to understand.

Google Search Results 1 - 10 of about 19,700 for steam turbine calculations horsepower.

Try: http://www.sugartech.co.za/turbinecalcs/index.php

or: http://www.cheresources.com/invision/index.php?showtopic=29&mode=threaded&pid=60

Most steam turbines require many specifics, and normally operate within a very small range of input requirements.

Advise back here, after reading the above please, with....

Kind Regards....

not sure if my own knowledge is quite enough. after all i've only taken one thermo course yet.

but as far as i know we need a lot mmore info on this to actually figure out the answer. stuff like inlet outlet conditions turbine effeciancy (sp?), stuff like that.

this website is a textbook suplement you might find usefull.

http://www.wiley.com/college/schmidt/047114343X/thermonet/home/

I personally doubt that the mathematics will help, as I assume that the reason behind the question is an idea for homemade power......your next problem, that is if the sheer amount of "stoking" needed with the steam boiler does not scare you off, is where will you find a steam turbine of that size.....?

Steam turbines generally (I could be wrong) are HUGE and you don't need just one to be efficient, you need 2 or even 3 to make full use of the steams energy......each one bigger than the one before, but producing probably only 25% of the one before's output!!!

Plus you need a very high energy level in your steam, that is probably 500°F at an extremely high pressure!!!! This is not kid's stuff and a leak will turn you instantly into what looks like a giant cooked lobster......You will die almost instantly, so don't worry too much on that score!!! A boiler explosion will make a big hole where your house was too......

For home usage, there are reciprocating steam engines, still needing a lot of stoking, but not the pressures and temperatures that Turbines need......efficiency is not a strong point of such systems though either......

Many people nowadays are looking at Stirling Engines, you can even build one from plans available on the internet, or buy one finished. No steam and to my mind a lot less dangerous. You can drive a small generator or dynamo from such a device and feed it either with a wood or other sort of fire (still stoking!) or possible solar energy at least during the day. I do not know enough about efficiencies, but if the heat source is free or cheap, that may not worry you either!!

I hope this helps you to further your aims in being self sufficient, if that is your aim.

Dear Andy & sparky!!!

You guys are quite tech'L pros as i observed and very matured in experience and with wider knowledge to an extent.

However, the questions of our guest seems that he is in a non-profit organization, building a new technology? steam turbine is not a commercial machine that can be easily purchase with a simple reason. This piece of machine cost millions $ with so much data to be consider prior to arrive in a correct specifications.

Is there any free-lance turbine-engr now a days setting on their lap and giving an advice?

i shoud say that, Let us leave this to OEM...

jojie_oak

I did not mention price, which I should have really, but I would guess that most would surmise that it would not be cheap from my other comments......I also did not mention maintenance either, which adds cost and complexity to the "Cost of Ownership" of a turbine/boiler setup.......

Unless there are some remarkable changes, I would personally mark up "Steam" generally as not for the private individual, or even small companies anymore. Around 1900, it might have taken off with the supply of cheap labour and coal for example.....

Some people feel that not even a Stirling motor has much of a chance either, i am personally not one of them, at least not yet!! I hope to see some good developments in this area before I get much older.......perhaps someone with good upto date knowledge can add some details for us here.....please!

You've not mentioned steam pressure.

1 Hp = 2544.434 Btu.

Btu/latent heat of steam at stated pressure = lbs/hr steam.

100 psi - 300 psi pressure steam = 882 Btu to 800 Btu = 3.0 to 3.2 lbs/hr steam /Hp.

Steam turbines require precision construction and high pressure "dry" steam which can be difficult and dangerous. For something you could make in your own machine shop try a Tesla Turbine which can operate at lower pressures and temperatures or a regular piston engine. Check out Cyclone, Lynx, Mike Brown and Green steam engines.

A water tube boiler cannot explode because the tube is within a jacket open to the exhaust, a burst tube simply lets all the pressure go out the exhaust and the steam reservoir is built to take much more pressure than the tubes. Depending on the design you could have operating pressure in 30 seconds.

A 20 hp steam engine could run a 2 ton car at 85 mph using a boiler about the size of a washtub, 36" dia. X 15" high.

I have built asmall 10hp steam turbin powered by a solar furnace, with an out put 1700 degrees with 300 psi with and input pressure of 65 psi. I operate three of the turbines and produce 21kw with a lot of hot water left over. Down the road i can ad more turbins to the ones producing as there out put psi 65 still good enough to run another 5kw. The turbins operate at 100psi and at 2000rpm. the turbines will be for sale on my web sit in the coming month. theenergydude.com

i tried to enter your sight but was forbidden? to see what price on you 10hp steam engine thanks stewbaby863@juno.com

hi

i want to run small steam turbine to generate 5kw of power

can u please tell me about its size mass flow rate and other necessar information on my email Fazl65@hotmail.com

i will b thxfull

Dear friend,

Your question should have important details such as Steam Pressure, Temp., whether the Turbine is of Back-Pressure mode or Condensing Mode. With insufficient data we cannot suggest a solution. Pl. furnish the details. The Basis is as per Thermo Dynamics,

If Steam parametres are known, we can calculate the HEAT DROP/Kg. of STEAM., in the Turbine.

Then Steam Required per KWHr = 860/HEAT DROP per Kg.of Steam in K.Calories

or otherwise Steam Required per KWHr = 3600/HEAT DROP per Kg.of Steam in Kilo Joules. Then you can convert to H.P if required.

This you yourself can calculate, since the values are known.

DHAYANANDHAN.S