Re: Temperature dilution

[Peter Verhaart <pverhaart@optusnet.com.au>]

Did Prasad really say: "it dilutes the temperature"? It gets mixed with 
something else? Beyond me.

How would you go about getting air at a very high temperature? Remember 
this is not rocket science. If it were we could pulverise the wood and 
inject it entrained in a flow of air (preheated if necesary). If that is 
not hot enough we take oxygen, automatic ignition, temperature and heat 
output rate control, none of this a problem.

Alas, we stovers have to make do with what nature provides and we all know 
nature is a poor provider. The best we can come up with is natural draft 
and if we are really smart and inspired and lucky we might come up with 
something that works.

I am sure, bye the way, that research on preheated air has been done for 
industrial combustion systems. The air is not only preheated, it is also 
given the right velocity to do its job, far beyond the capability of 
natural draft.

Piet (ever cheerful) Verhaart


At 08:50 23/05/02 -0500, you wrote:
Please consider if the problem of "temperature dilution" (mentioned in the 
above paragraph) would be less of a problem if the air entering was already 
at a high temperature.  And I mean at a VERY high temperature, as hot as 
you can get it.

>Has research been done on the impact of pre-heated primary and/or 
>pre-heated secondary air?  Anyone have references?


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