FIELD: agricultural engineering.
SUBSTANCE: invention relates to device for control of microclimate in greenhouses. Proposed device is essentially closed space of greenhouse limited from one side by fragment of guard and by heat insulation from all other sides. Heating and measuring elements are installed inside. To protect measuring element from direct sun rays special screen is used. Control unit provides automatic control of device heating element and forms dc signal at its output corresponding to value of heat losses. Operation of device is based on measuring power of heater placed in closed space limited from one side by fragment of guard and at other sides by heat insulation. Heating element maintains is heated volume constant temperature equal to temperature maintained in zone of location of plants by means of automatic control system arranged in separate unit.
EFFECT: simplified design of device.
2 cl, 7 dwg
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