APPARATUS FOR STABILIZATION OF TEMPERATURE MODE IN GREENHOUSE Russian patent published in 1998 - IPC

FIELD: creating predetermined microclimate conditions for plants grown in constructions with protected ground. SUBSTANCE: apparatus has two radiators 1,2 communicated one with another and filled with water. Upper radiator 1 is positioned in greenhouse above soil and lower radiator 2 is inserted into soil for 30-100 cm depth. Apparatus is provided with water charging opening. Upper radiator 1 is positioned at an angle of 10-30 deg relative to lower radiator 2. At warm daytime water in upper radiator 1 is heated and delivered by gravity into lower radiator 2. Soil in greenhouse accumulates heat transferred from lower radiator 2 due to heat-exchange. At colder night time the process goes on in reverse order. Heated soil gives accumulated heat by heat-exchanging to water in lower radiator 2. Warm water is then delivered into upper radiator 1 to heat air medium in greenhouse. Thus, apparatus allows adverse effect of nocturnal frost or hot sun lights on microclimate in greenhouse to be smoothed. EFFECT: increased efficiency in temperature stabilization and simplified construction. 2 dwg