First to address TJ in Houston's cooling problems. 1) movable awnings over windows and walls exposed to sunlight 2) slit windows at the bottom and top of the north side wall will allow heat to escape at the top which will pull cool air in at the bottom, especially at night and especially in a two story building. You might also explore cooling towers which essentially do the same thing.I've been involved with building houses for several decades, and I've been thinking passive solar for quite some time too. In fact many of the ideas in this book are very similar to ideas I've developed independently.
I've seen everything on thousands of jobs from everyday homes to ultra gigantic mansions. One thing I've learned from the BEST builders is to avoid the experimental. Avoid extravagant shapes. Build simple buildings. Put your money into quality material and hardware... unless you want problems. And please keep the place neat. Nobody likes tripping over or cleaning up garbage the last guy left. Call your subs BEFORE you need them and ask them what drives them nuts, instead of finding out you made the same goof everyone makes, after you've spent a bunch of TIME and MONEY building it wrong.
I have to say the slab thing, and the ideas about the Sun's inclination etc are ingenious. They've changed my thinking considerably.
WHY THEN ONLY 3 STARS?
Well mainly some small, but galling, typos, and the lack of a website, or at least an obvious website. James needs to get feedback on these problems and the revisions need to be posted somewhere so they don't keep driving people nuts:
1) on page 76, Table 6-10 it says "see appendix 4." If you use appendix 4, like I did, it will totally confuse you and give you a headache. It SHOULD read appendix 5. The data on appendix 4 LOOKS like it MIGHT work which makes the problem worse. This one took me almost an hour to figure out.
2) The book has many pictures and come with even more on a CD, many useless, like a picture of a truck delivering stuff. I've seen trucks on roads before James. This is no help. However there is no CLEAR picture of HOW the slab is CONNECTED to the foundation walls. I'd like to see a close up. The diagrams are not clear enough on this issue. I don't have that much experience in this area and I'd like an answer. It seems to me that if the slab is in contact with the foundation wall there will be heat loss thought transmission from the slab to the foundation wall. Isn't that why the wall is insulated on the inside? If the slab does not contact the wall it seems to me that it's free floating which makes me nervous. In the diagram it looks like plywood ties the slab and wall together which make me think termites. Poured concrete slabs are usually tied together using rebar or similar. What is the secret?
3) on page 67 he goes though a series of equations to derive the elegant end equation I=Btus/hr·ºF. However you don't need the last equation to derive the information on the next pages. You need the NEXT to the last equation. It took me half and hour to get past that confusion. I kept looking for the LAST equation. Where oh where was it? The math is moderately difficult for us non engineer people but this typo made my head hurt. Ouch!
4) the diagram on page 46 appears to have a stud that makes a 45 degree turn and then another 45 degree turn??? I really don't think it does this,but I'll be durned if I can figure what they are trying to illustrate.
Anyway James, if you see this please put up a little tiny website with your email address please, so we can contact you about errors. A web appendix with corrected typos would be nice too. Websites are cheap and easy now days and you don't need much of a website really.
Otherwise great ideas.
Product Description
Revised and Expanded Edition-Includes CD-ROM with Custom Design Software
For the past ten years The Passive Solar House has offered proven techniques for building homes that heat and cool themselves, using readily available materials and methods familiar to all building contractors and many do-it-yourself homeowners.
True to this innovative, straightforward approach, the new edition of this best-selling guide includes CSOL passive solar design software, making it easier than ever to heat your home with the power of the sun. Since The Passive Solar House was first published, passive solar construction expert James Kachadorian has perfected user-friendly, PC-compatible software to help readers analyze the efficiency of their passive solar house designs and the solar potential of their current homes or building sites.
This is the building book for a world of climbing energy costs. Applicable to diverse regions, climates, budgets, and styles of architecture, Kachadorian's techniques translate the essentials of timeless solar design into practical wisdom for today's solar builders. Profiles of successful passive solar design, construction, and retrofit projects from readers of the first edition provide inspiration to first-time homebuilders and renovators alike.
About the Author
James Kachadorian is a civil engineer with degrees from the Massachusetts Institute of Technology and Worcester Polytechnic Institute. He is the founder of Green Mountain Homes, which has gained national recognition as the first provider of innovative, manufactured solar homes. He has built more than three hundred passive solar homes, including his own home in Woodstock, Vermont.
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