The Solar Food Dryer: How to Make and Use Your Own Low-Cost, High Performance, Sun-Powered Food Dehydrator

The Solar Food Dryer: How to Make and Use Your Own Low-Cost, High Performance, Sun-Powered Food Dehydrator

Language: English

Pages: 144

ISBN: 0865715440

Format: PDF / Kindle (mobi) / ePub


The Solar Food Dryer describes how to use solar energy to dry your food instead of costly electricity. With your own solar-powered food dryer, you can quickly and efficiently dry all your extra garden veggies, fruits, and herbs to preserve their goodness all year long—with free sunshine! Applicable to a wide geography—wherever gardens grow—this well-illustrated book includes:

• Complete step-by-step plans for building a high-performance, low-cost solar food dryer from readily available materials
• Solar energy design concepts
• Food drying tips and recipes
• Resources, references, solar charts, and more

Eben Fodor is an organic gardener with a background in solar energy and engineering. He works as a community planning consultant in Eugene, Oregon.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

speeds drying by boosting the effective temperature by about 20° F. The clear glass glazing filters most ultraviolet light and allows you to visually monitor the food without opening the unit. Two large food trays are made from lightweight aluminum frames that are easy to clean and provide capacity for up to six pounds of fresh food. 4-1: Sun Works solar food dryer Tips on Using Recycled Materials Recycled materials will generally produce excellent results and will save you quite a bit of

but adds weight) Cedar legs and top rear brace from 10'length of cedar 2 x 2 (11/2" x 11/2") Wood rack supports and misc. parts: 10 pieces, 3/4" x 3/4" trim material, totalling 236" (about 20'), or cut from select 2 x 4 - 8' KD (dried wood) Wood rack supports: 2 pieces 3/4" x 1/" trim material, totalling 52", or cut from above 2 x4 Sheet metal for metal heat plate: 31" x 23" (use 0.025"thick aluminum or galvanized sheet metal that is thin enough to be bent by hand) Rubber or closed-cell foam

Absorptance: The fraction of incident solar radiation absorbed by a surface. The range is 0 to 1.0 (corresponding to 0 to 100 percent). Solar Collector: Any device that captures solar energy for use, ranging from a simple window to complex photovoltaic systems. Solar Constant: The extraterrestrial solar radiation on one square meter of area, received at the limit of the Earth's atmosphere, or 1,367 W/m2. It is actually not a `constant" since it varies by ±3 percent depending on Earth's distance

Facts ............................................................... 18 Chapter 3: Design Considerations for Solar Dryers .................................. 21 Direct Heating by the Sun ...................................................... 22 The Basic Solar Collector ....................................................... 24 The "Solar Fan" ................................................................26 Insulation and Double Glazing ...................................................

available for drying and preserving the food collected over the summer. The historic photo in Figure 1-1 shows the common Native American practice of using drying racks. Native Americans dried meat, fish, berries, and roots in the sun. But simple outdoor sun drying leaves a lot of room for improvement. Your precious food will take a while to dry and will be subject to possible rotting and assault from rain, wind, dust, rodents, bugs, and, well, you get the idea. These problems are readily solved

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