Water-cooled slant cylinder gasious engine with a PM direct driven genrator, incorperated inverter/charger and full intergration support. Look at this one with 2.5kW/el sizing:įollow all of the links and downloads and you will find a fully US/Canadian/EU/California certified system. 5-6 different systems out there in the World with at least 50,000 installed and in actual use system. The First and most serious is not keeping up with currently developed and offered small IC piston engine based commercially offered home size CHP systems. Although, a simpler system at 10% thermal efficiency would be worth it in my opinion.Īs much as I have wanted to like steam there are three very serious mistakes you are making in your premises. As far as thermal efficiency goes, I believe 15% is within reason for the kind of system I’ve considered.

The battery is an Achilles heel in the off grid setting, and moving away from heavy reliance on a battery system is a good idea in my opinion. A low power engine that operates like this for long periods will also allow for using a smaller battery while minimizing battery discharge. However, the battery is there as a buffer when required. If the loads in the home are well matched to the engine output, then battery losses are minimized. 2 hp will provide 1 KW electrical even after alternator and inverter losses are considered. NOTE: That 1 hp rating is the low end, but I believe 1-2 hp is sufficient for an engine capable of continual operation. Wood gassers should take a look, as this is a very simple way to construct an external combustion engine that can use existing piston compressors and engines. NOTE: That proepowersystems engine looks like a Brayton cycle engine that I considered several years ago… fundamentally identical. I happen to think small scale steam power has more potential in this application than a wood gas engine system. My interest is in individual energy self-reliance. If the price is right and assuming the system is very reliable, then that product should do extremely well.īTW, my interest is restricted to very small scale systems that optimize the use of biomass for residential scale cogeneration.

Something like this would make a wood gas engine system obsolete for this setting (small scale combined heat and power). If that’s the case, then the 400F working fluid should allow 10% net thermal efficiency. Based on what I was able to find out, it appears to a two cylinder single acting engine with poppet intake valves… possibly uniflow exhaust, and possibly there is cylinder jacketing for cylinder heating. If there are established engine manufacturers working on this system, then it looks very promising. Let me know if you have any additional information as what’s provided at the link is vague (along with a lot of marketing hype). I’d like to have more specific information on the engine design. Magne, that Craftengine flew under my radar.

Kens miniature ic engines