Simple coke can engine This is a simple coke can Stirling engine you can make in under an hour. No epoxy or RTV needed, just super-glue. It's all supported by steel wire, with spade connectors for all of the bearings. Important note: It has been found that aluminium drinks cans need additional cooling around the top because the aluminium is so thermally conductive. Use steel cans if you can, such as Pepsi, Tango etc. Thanks to David Williamson for the diaphragm design/ construction method. Materials1 Coke can Steel wire wool 1.6mm steel wire Spring paper clip Normal paper clip 0.4-0.6mm fishing line Super glue Thin cardboard from a cereal box A balloon 6.35mm electrical connector/spade connectors .
Homemade Solar panels At the end, the solar absorber is painted black and placed in the diy solar panels casing. The casing is covered with plexiglass that we attach to the frame and thoroughly corked with silicone. Polycarbonate / plexiglass is slightly convex in order to gain greater strength. You can see installed solar absorber without plexiglass in picture 18. On YouTube you can see how our diy pop-can solar panels work. Important note: Our solar system is not able to accumulate thermal energy after producing it. Differential thermostat (snap disc) controls the fan. If on/off temperatures are set carefully, diy solar panels are able to produce an average 2 kW of energy for home heating. Dress rehearsal of solar collectors carried out in the backyard before installing the system on the house. After completing installation of collector, the outside temperature was -3 ° C, and from the solar collector is coming out 3 m3/min (3 cubic meters per minute) of heated air.