{"id":474,"date":"2013-01-21T22:21:26","date_gmt":"2013-01-22T05:21:26","guid":{"rendered":"http:\/\/www.actual-size.com\/blog\/?p=474"},"modified":"2013-04-02T09:22:17","modified_gmt":"2013-04-02T16:22:17","slug":"oops-no-wind","status":"publish","type":"post","link":"https:\/\/www.actual-size.com\/blog\/2013\/01\/oops-no-wind\/","title":{"rendered":"Oops &#8212; No Wind"},"content":{"rendered":"<div id=\"attachment_477\" style=\"width: 183px\" class=\"wp-caption alignright\"><a href=\"http:\/\/www.actual-size.com\/blog\/wp-content\/uploads\/2013\/01\/windless-generator.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-477\" class=\"size-medium wp-image-477  \" title=\"windless generator\" src=\"http:\/\/www.actual-size.com\/blog\/wp-content\/uploads\/2013\/01\/windless-generator-173x300.jpg\" alt=\"\" width=\"173\" height=\"300\" srcset=\"https:\/\/www.actual-size.com\/blog\/wp-content\/uploads\/2013\/01\/windless-generator-173x300.jpg 173w, https:\/\/www.actual-size.com\/blog\/wp-content\/uploads\/2013\/01\/windless-generator-86x150.jpg 86w, https:\/\/www.actual-size.com\/blog\/wp-content\/uploads\/2013\/01\/windless-generator-591x1024.jpg 591w, https:\/\/www.actual-size.com\/blog\/wp-content\/uploads\/2013\/01\/windless-generator.jpg 887w\" sizes=\"auto, (max-width: 173px) 100vw, 173px\" \/><\/a><p id=\"caption-attachment-477\" class=\"wp-caption-text\">Idling...<\/p><\/div>\n<p>If we learn from our mistakes, students at Sanchez School will certainly benefit from the placement of this fence-top wind turbine.\u00a0 As anyone walking by could tell you, the generator would do better on top of this 40-foot edifice than at the sidewalk.<\/p>\n<p>But would that be enough?\u00a0 Industry rule of thumb suggests placing turbines 30-feet over anything within a 500-foot radius.\u00a0 That gets you into the laminar winds above typical rooftop turbulence.\u00a0 It takes some expense though, and introduces structural and vibration-related building stresses, with related noise potentially amplified through the roof diaphragm.<\/p>\n<p>And even at that elevation, a wind generator <a href=\"http:\/\/www.buildinggreen.com\/auth\/article.cfm\/2009\/4\/29\/The-Folly-of-Building-Integrated-Wind\">may not yield much<\/a>.\u00a0 Say the turbine has a rated capacity of 1kW in 10-mph wind (though winds below 5-mph may not affect the rotors), the average wind is 10-mph, and we generously assume this site, downhill and leeward of Twin Peaks, yields a 10% capacity factor.\u00a0 Theoretically that would still be 100W, but real-world testing of micro wind generators is yielding results of only a fraction of manufacturer claims. Domestic-scale photovoltaic panels are producing more output, at less cost, and with a fraction of the maintenance wind generators require.<\/p>\n<p>Wind power will certainly be in our future, but it&#8217;s going to be from large arrays, in open countryside, between migratory routes, and far from your rooftop.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>If we learn from our mistakes, students at Sanchez School will certainly benefit from the placement of this fence-top wind turbine.\u00a0 As anyone walking by could tell you, the generator would do better on top of this 40-foot edifice than at the sidewalk. But would that be enough?\u00a0 Industry rule of thumb suggests placing turbines [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[68,57],"tags":[36,37,59,4],"class_list":["post-474","post","type-post","status-publish","format-standard","hentry","category-building-science","category-oops","tag-environment","tag-green","tag-oops-2","tag-technology"],"_links":{"self":[{"href":"https:\/\/www.actual-size.com\/blog\/wp-json\/wp\/v2\/posts\/474","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.actual-size.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.actual-size.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.actual-size.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.actual-size.com\/blog\/wp-json\/wp\/v2\/comments?post=474"}],"version-history":[{"count":12,"href":"https:\/\/www.actual-size.com\/blog\/wp-json\/wp\/v2\/posts\/474\/revisions"}],"predecessor-version":[{"id":556,"href":"https:\/\/www.actual-size.com\/blog\/wp-json\/wp\/v2\/posts\/474\/revisions\/556"}],"wp:attachment":[{"href":"https:\/\/www.actual-size.com\/blog\/wp-json\/wp\/v2\/media?parent=474"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.actual-size.com\/blog\/wp-json\/wp\/v2\/categories?post=474"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.actual-size.com\/blog\/wp-json\/wp\/v2\/tags?post=474"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}