1. Insulate north facing wall
2. Insulate your foundation’s outside perimeter with Styrofoam board- 1"-2" thick; placed vertically and extend down to a minimum of 1 foot
3. Dense thermal mass material in which to store the incoming solar heat:
Use dark colored oil drum filled with water along the north wall (pain white in summer to reflect light/not over heat house) pg 27
4. To help the plants grow, paint/cover everything (except thermal mass) white
5. "A night curtain is an option for people in very cold areas. It is not for everyone. A night curtain is usually an insulating cover you roll across the inside of the greenhouse glazing at night like a blanket to prevent excess heat loss." (author is skeptical)
Source:
http://www.greenhousegarden.com/energy.htm cited book:
Greenhouse Gardener's Companion, Revised: Growing Food & Flowers in Your Greenhouse or Sunspace by Shane Smith
Science behind the greenhouse:
The determining energy characteristics of the solar greenhouses are as follows: maximal solar radiation input to the greenhouse; minimal heat losses; maximal storage of the heat of the solar radiation energy entering the greenhouse.
Scholarly article: Raising the Efficiency of Solar Greenhouses
http://www.springerlink.com/content/a73666h334u25260/fulltext.pdf
The determining energy characteristics of the solar greenhouses are as follows: maximal solar radiation input to the greenhouse; minimal heat losses; maximal storage of the heat of the solar radiation energy entering the greenhouse.
Scholarly article: Raising the Efficiency of Solar Greenhouses
http://www.springerlink.com/content/a73666h334u25260/fulltext.pdf
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