WARM SEED PLOT Russian patent published in 2008 - IPC A01G9/14 

FIELD: agriculture.

SUBSTANCE: closed underground cavity is connected to atmosphere by inlet and outlet air feed pipe of different length. Air feed pipes are installed at different height of closed underground cavity. Inlet air feed pipe is installed by the lower end above the outlet air feed pipe. Heat producing nozzle is fixed on the upper end of air feed pipe outlet and connected to atmosphere. Generating line of heat producing nozzle can be made of TLS material. There is a dark colour core made of the heat material inside the nozzle. The core is set so that there is ring-forming cavity between it and the heat producing nozzle.

EFFECT: improving the efficiency of heat transfer of warm plots.

3 cl, 3 dwg