TE
科技回声
首页24小时热榜最新最佳问答展示工作
GitHubTwitter
首页

科技回声

基于 Next.js 构建的科技新闻平台,提供全球科技新闻和讨论内容。

GitHubTwitter

首页

首页最新最佳问答展示工作

资源链接

HackerNews API原版 HackerNewsNext.js

© 2025 科技回声. 版权所有。

The Zen of Passive Solar Heating Panel Design (2010)

153 点作者 mpatobin超过 8 年前

9 条评论

samcheng超过 8 年前
Here&#x27;s the payout:<p>&gt; This installation was completed in 2007 - and has been adequate to maintain the indoor temperature above 65°F&#x2F;18°C since that time – even though outdoor temperatures in winter dropped below -20°F&#x2F;-29°C and even though the nine-foot by nine-foot overhead door has been opened every morning and every evening.<p>&gt; Before the end of 2009 the panels had saved more than their purchase price in fuel costs and the owner expects that the future savings will exceed the original cost of the entire structure. He told me he really likes starting every day (checking his livestock) in a nice warm truck.
评论 #12526266 未加载
dboreham超过 8 年前
Very interesting. I live in a place where we have significant issues with ice build up on roof surfaces, gutters, etc. One way to deal with this is to electrically heat the roof and gutters. This of course is expensive (very!). So I had the ideal that one could use the available solar energy (it is reasonably sunny in winter here) to melt the ice. My idea is not to use PV panels and restive electrical heating but to directly transfer the solar energy as heat to the ice. This would be done with some sort of heating panel, coupled to the metalic gutters with a heat pipe. Sometime I need to do some analysis to see if it is a viable idea. How to ensure snow does not cover the panel&#x2F;solar heat collector is also a potential problem.
评论 #12528913 未加载
评论 #12527187 未加载
imaginenore超过 8 年前
I actually built a similar system as an experiment, basically a 1 x 2 x ¼ meters (multi-layered) cardboard box painted all black inside and covered with a sheet of transparent plastic on one of the larger sides. It was really cheap, around $10-15 in materials. Then I added two holes (in and out), and put some cheap flexible air duct hoses with some old CPU fan, which was another $8. On a sunny day it heats up the air incredibly well, where it actually could be beneficial during the winter season.<p>Unfortunately there are big problems that I encountered that I couldn&#x27;t solve cheaply.<p>1) Mounted on the roof, it has to be sturdy enough to resist heavy rains and strong winds. We get winter windstorms, and one winter it got up to 55 knots with 70 knot gusts. I have no idea how to cheaply mount this box on the roof so it doesn&#x27;t fly off and kill someone.<p>2) Intake and exhaust hoses would have to go either through the walls or through the windows. And since I don&#x27;t own the house, my only real option would be to cut circular holes in the windows, and then replace the glass when we move out. Again, not cheap.<p>3) For the winter months I would have to also insulate these hoses, or they would lose most of the heat on the way to the house.<p>EDIT:<p>I also think if you don&#x27;t care about what your house looks like, you can either paint it black or wrap it in black plastic.
评论 #12525960 未加载
评论 #12525771 未加载
评论 #12525868 未加载
samatman超过 8 年前
For a next-level extension of this idea, check out this paper on solar closets:<p><a href="http:&#x2F;&#x2F;www.ece.villanova.edu&#x2F;~nick&#x2F;solar&#x2F;solar.html" rel="nofollow">http:&#x2F;&#x2F;www.ece.villanova.edu&#x2F;~nick&#x2F;solar&#x2F;solar.html</a>
devenson超过 8 年前
If he just made large windows out of the same double walled polycarbonate panels, wouldn&#x27;t they collect just as much heat from the sun during the day? The problem with windows however is they don&#x27;t insulate as well. Perhaps just doubling up or tripling their thickness would achieve the same result in the end, and be much simpler. What am I failing to understand?
评论 #12527119 未加载
评论 #12528060 未加载
dttocs超过 8 年前
See also <a href="http:&#x2F;&#x2F;www.builditsolar.com" rel="nofollow">http:&#x2F;&#x2F;www.builditsolar.com</a> for more recent improvements and ideas for simple passive solar.
dorfsmay超过 8 年前
I knew about vacuum tube, but they are expensive, require a pump and something to convert the heat back from liquid to air. This on the other hand has zero moving part and requires no maintenance. Amazing!
tonyarkles超过 8 年前
That&#x27;s pretty amazing! Clearly a lot of thought and effort went into getting the design nailed down.
intrasight超过 8 年前
Curious if anyone sells such panels
评论 #12526231 未加载