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Second version of the solar pyramid, an improvement of the previous version is the use of a stirling engine, hereby boosting efficiency by 25% (to 40%). Note that the yellow blocks are the upper piston chamber with the piston inside it. The lower pistons aren't drawn but come where the water passes. The inside of room with the boiler tubes can be filled with oil. The nitrogen gas and regenerator are not drawn.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 18:08, 22 April 2011 | | 2,652 × 1,772 (253 KB) | KVDP (talk | contribs) | removed mistake |
| 18:03, 22 April 2011 |  | 2,652 × 1,772 (259 KB) | KVDP (talk | contribs) | Changed design from a Beta-stirling to Alpha-stirling; see Stirling motor article at Appropedia | |
| 12:07, 5 July 2010 |  | 2,652 × 3,200 (320 KB) | KVDP (talk | contribs) | It appears that the second regenerator can't be added (no longer a power piston otherwise; due to no pressure difference) | |
| 08:51, 12 June 2010 |  | 2,652 × 3,200 (296 KB) | KVDP (talk | contribs) | Second version of the solar pyramid, an improvement of the previous version is the use of a stirling engine, hereby boosting efficiency by 25% (to 40%). Note that 2 pistons are drawn but only the lower one (the "power piston") actually generates power, th |
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