Andrew Vliet wrote:Regarding the concept of Sterling engines being "low power", this company would beg to differ.
Shane McKenna wrote:
Here are some of the current downsides that are preventing main stream usage;
1) 3kw to 10kw engines must either be very large, or use very high temps (1200°+ F). A well designed rocket stove can overcome the latter issue.
2) Materials to build an efficient engine are very expensive, and the tolerances are very, very tight. This equals expensive manufacturing. Current engines capable of meaningful power generation are in the $50k to $150K range.
3) The Stirling engines that are being developed for home power usage are for supplemental power, not whole house power.