Bruce Field and daughter Ellie are happy campers, thanks to a portable heating/cooling device they built that maintains a constant, comfortable temperature inside their camping tent. To ensure complete climate control, they equipped a standard room air-conditioner with an electrostatic air filter, economical slinky-type dryer ducting (that minimizes number of holes cut into tent fabric), and a constant-temperature feedback sensor. An optional motion sensor discourages both curious neighbors and hungry bears.
Bruce and daughter Ellie Field's complete instructions on how to build your own Field Cooler
Field Cooler Parts List
Allied Part #
Soft wire type J, 15 ft
C19 cord set
Full swing castors
Other parts required: 5k BTU (or higher) room air-conditioner, front and rear bezel to fit air-conditioner unit, dryer tubing, nylon material, glue bag to fit cooling unit, many screws, filter material, sewing machine. Plus, there is elbow-room galore for customization!
Researchers have been working on a number of alternative chemistries to lithium-ion for next-gen batteries, silicon-air among them. However, while the technology has been viewed as promising and cost-effective, to date researchers haven’t managed to develop a battery of this chemistry with a viable running time -- until now.
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