Search found 6 matches

by StirlingDragon
Sun Oct 11, 2015 1:20 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Low Temp Stirling Design - Low Weight?
Replies: 19
Views: 10852

Re: Low Temp Stirling Design - Low Weight?

Miliwatts? What is the size and heat source of your engine in that case? And what problems did you have with the beta style engine (so we know what to look for)?

Bookmarking this for myself for later: https://www.youtube.com/watch?v=smZZCLA5FEI
by StirlingDragon
Sat Oct 10, 2015 1:24 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Low Temp Stirling Design - Low Weight?
Replies: 19
Views: 10852

Re: Low Temp Stirling Design - Low Weight?

Ok, how feasible do you think it would be if we got rid of the water jacket and had the heat sink end submerged in the water itself? I'm thinking that the structure would be built-in along the side of the pond. Cooling fins might be used again in that situation, especially when the water drains out ...
by StirlingDragon
Fri Oct 09, 2015 9:10 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Low Temp Stirling Design - Low Weight?
Replies: 19
Views: 10852

Re: Low Temp Stirling Design - Low Weight?

I was looking at this model on Youtube: https://www.youtube.com/watch?v=MrArmbBIe5Q The displacer piston needs to have some clearance within the gas exchange cylinder. How much clearance do you suggest? And since it will have clearance, then, the only thing holding it up is the rod going through the...
by StirlingDragon
Thu Oct 08, 2015 2:49 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Low Temp Stirling Design - Low Weight?
Replies: 19
Views: 10852

Re: Low Temp Stirling Design - Low Weight?

Geothermal does sound cool, but given our class project size and time limitations, that's probably best to leave aside. For the small size artificial pond pump, let's go with kerosene. From Wikipedia (and welcoming an alternative source), the lower hearing value is 43.1 MJ/kg, and the higher heating...
by StirlingDragon
Wed Oct 07, 2015 1:29 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Low Temp Stirling Design - Low Weight?
Replies: 19
Views: 10852

Re: Low Temp Stirling Design - Low Weight?

We are strongly considering kerosene, but other possibilities (however realistic or not) include sunlight, warm water, warm atmosphere (assuming we only need this to function during warm summer months), and maaaaaaybe geothermal (Impractical? It sounds so cool! Can we at least look at it later?). I ...
by StirlingDragon
Tue Oct 06, 2015 8:26 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Low Temp Stirling Design - Low Weight?
Replies: 19
Views: 10852

Re: Low Temp Stirling Design - Low Weight?

Hey, toomey's lab partner here. We are designing this engine to pump out an artificial pond that often floods and has other debris (i.e. grass clippings and mulch). It's outdoors, so using solar energy for the heat source would be really impressive, but probably inconsistent given our track record w...