Ground Source Heat Exchange (GSHE) for Root zone heating & cooling
An innovative, patented, tested (in cooperation with Netafim), environmentally sustainable and energy efficient product that moderates day/night and seasonal temperature fluctuations to increase yield, improve quality, and shorten growing seasons. It is suitable for greenhouses, shade nets or open fields and provides a quick ROI for farmers.
This is how it works:
Soil temperature at 2 meters or deeper is relatively stable year round. At that depth, soil temperature is always warmer in the winter and colder in the summer than the top soil temperature. Roots Ltd. has patented, developed and tested (on 9 crops and flowers, in different locations and weather conditions) a closed-cycle system that, after being filled with water once, maintains an optimum or semi-optimum range of Root Zone Temperatures (RZT). It is suitable for both covered and fields. The only energy used is for operating a water circulation pump.
The root zone heating and cooling is achieved by digging a ditch adjacent to (or under) the growing area and installing ground loops (“radiators”). Water circulated through the deeper part of the radiator is “charged” with the underground temperature and then discharges the heat in the higher part of the radiator at the root zone. The result: a Ground Source Heat Exchange (GSHE) system that protects the plants from severe cold and heat spells by modulating peak temperatures in the root zone. In the summer Roots’ GSHE system reduces and in the winter raises the RZT by up to 11° Celsius.
Roots’ unique GSHE system is the only one that provides these advantages without investing any energy in the water temperature (heating or cooling) other than the minimal energy required to circulate the water within the radiators. If a solar pump is used, the RZT product is 100% environmentally friendly.and off grid.