Greenhouses could be passive / use solar energy and aquaponics
By Hicbd
Tue Jan 11 2022 8:03 am
"Growing vegetables in China’s cold north necessitates innovation, and passive greenhouses which don’t use electricity are common in that part of the country...The 300-foot long, 30-foot wide greenhouse is constructed out of a steel frame with two polyolefin plastic roofs. An electric motor allows operators to extend and retract an insulating blanket to trap heat absorbed during the day."
URL:----------------------------------------------------------
Please login to comment
