Reference Type: Electronic Resource
Title: Root Zone Heating for Greenhouse Crops
Primary Authors: Diver,Steve
Published: 2002, ATTRA
Abstract: Root-zone heating is a greenhouse production method that focuses on an optimum root temperature by distributing heat to bench and floor growing systems. It is an appropriate technology in the sense that it promotes energy conservation in modern greenhouse production. To warm roots, hot water is distributed through EPDM rubber tubing (also known as hydronic thermal tubing) or PVC piping laid out in a looping pattern. Though modern greenhouses typically use natural gas or fuel oil to heat water, alternative energy sources include geothermal, solar, wood, thermal biomass (heat from compost or brushwood piles), and co-generation.
Ag Matters Catalog ID: 352