[Stoves] Green Steam Engine

[Bryce L Nordgren]

Products which turn biomass into heat efficiently tend to be gasifiers.
>From TLUDs to 30kW+ hydronic heaters, the reason is the same:
gasifier-combustors tend to operate more cleanly than their non-gasifier
counterparts (woodstoves; open fires).

The GEK (not the GEK power pallet) may well serve as a biomass->heat
converter if one omits the gas scrubber and uses their "flare" (or a better
combustion/heat transfer chamber) to boil water. Recycling the exhaust
steam to preheat fuel, then heat water would realize some degree of
combined heat and power.

As to the steam engine plans (not an actual engine)...A back of the
envelope calculation, using his low number of 24% efficiency for condensing
and recycling steam back to the boiler, yields something like 6.5 kg bone
dry fuel/hour. The lower number of 12% for not recycling the steam would
double that.

The relevant question is whether the wobbly shaft drive really adds to the
efficiency compared to traditional methods. Of course, you may also want to
find out whether the cheap off the shelf parts you are supposed to locate
yourself will handle 125psi, or whether the home version that runs off of a
pressure cooker isn't really capable of 10hp. Steam power isn't new, and
there's places that sell heavy castings with "ample safety factors".
(http://www.reliablesteam.com/RSE/RSEengines.html)

Bryce


On Tue, May 14, 2013 at 6:42 PM, Kevin <kchisholm at ca.inter.net> wrote:

> Dear Crispin
> ----- Original Message ----- From: "Crispin Pemberton-Pigott" <
> crispinpigott at gmail.com>
> To: "Stoves" <stoves at lists.bioenergylists.**org<stoves at lists.bioenergylists.org>
> >
> Sent: Tuesday, May 14, 2013 6:40 PM
>
> Subject: Re: [Stoves] Green Steam Engine
>
>
>  Kevin,
>> Is that not what GEK does??
>> Crispin
>> From BB9900
>>
>
> The GEK is a true Wood Gasifier, that takes in wood chips, and converts
> them to "Engine Grade Gas". (Woodgas with very low tar content.) The
> woodgas is sent to a Spark Ignition engine as fuel, to generate shaft
> power. It does produce a small percentage of char (and ash), but the char
> is pasically a waste product. Char production is fundamentally undesirable
> in that it represents a waste of input energy.
>
> The Green Steam Engine runs on steam, as its energy source, to produce
> shaft power. To get the steam, one needs a boiler, or a steam generating
> solar system. If a boiler is used, the fuel can be anything that releases
> heat on combustion... natural gas, fuel oil, biomass, etc. The fuel needs
> an appropriate "burner system." A "Full Combustion Stove System" can be
> used, to maximize the energy utilization of the fuel, or, where char
> production is wanted, a "Char Producing Stove System" can be used.
>
> Any further questions, please let me know.
>
> Best wishes,
>
> Kevin
>
>
>
>> -----Original Message-----
>> From: "Kevin" <kchisholm at ca.inter.net>
>> Sender: "Stoves" <stoves-bounces at lists.**bioenergylists.org<stoves-bounces at lists.bioenergylists.org>
>> >
>> Date: Tue, 14 May 2013 18:35:42
>> To: Discussion of biomass cooking stoves<stoves at lists.**
>> bioenergylists.org <stoves at lists.bioenergylists.org>>
>> Reply-To: Discussion of biomass cooking stoves
>> <stoves at lists.bioenergylists.**org <stoves at lists.bioenergylists.org>>
>> Subject: Re: [Stoves] Green Steam Engine
>>
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