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). <br>
<br>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.<br>
<br>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.<br>
<br>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".<br>
(<a href="http://www.reliablesteam.com/RSE/RSEengines.html">http://www.reliablesteam.com/RSE/RSEengines.html</a>)<br><br>Bryce<br><br><br><div class="gmail_quote">On Tue, May 14, 2013 at 6:42 PM, Kevin <span dir="ltr"><<a href="mailto:kchisholm@ca.inter.net" target="_blank">kchisholm@ca.inter.net</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Dear Crispin<br>
----- Original Message ----- From: "Crispin Pemberton-Pigott" <<a href="mailto:crispinpigott@gmail.com" target="_blank">crispinpigott@gmail.com</a>><br>
To: "Stoves" <<a href="mailto:stoves@lists.bioenergylists.org" target="_blank">stoves@lists.bioenergylists.<u></u>org</a>><br>
Sent: Tuesday, May 14, 2013 6:40 PM<div class="im"><br>
Subject: Re: [Stoves] Green Steam Engine<br>
<br>
<br>
</div><div class="im"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Kevin,<br>
Is that not what GEK does??<br>
Crispin<br>
>From BB9900<br>
</blockquote>
<br></div>
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.<br>
<br>
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.<br>
<br>
Any further questions, please let me know.<br>
<br>
Best wishes,<br>
<br>
Kevin<div class="HOEnZb"><div class="h5"><br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<br>
-----Original Message-----<br>
From: "Kevin" <<a href="mailto:kchisholm@ca.inter.net" target="_blank">kchisholm@ca.inter.net</a>><br>
Sender: "Stoves" <<a href="mailto:stoves-bounces@lists.bioenergylists.org" target="_blank">stoves-bounces@lists.<u></u>bioenergylists.org</a>><br>
Date: Tue, 14 May 2013 18:35:42<br>
To: Discussion of biomass cooking stoves<<a href="mailto:stoves@lists.bioenergylists.org" target="_blank">stoves@lists.<u></u>bioenergylists.org</a>><br>
Reply-To: Discussion of biomass cooking stoves<br>
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Subject: Re: [Stoves] Green Steam Engine<br>
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