METHOD AND DEVICE FOR DETERMINATION OF PHOTOELECTRIC, THERMAL AND PHOTOBIOCHEMICAL PHOTOSYNTHETIC EXERGY FOR THREE TYPES OF SOLAR ENERGY CONVERSION Russian patent published in 2009 - IPC A01G7/00 

FIELD: agriculture.

SUBSTANCE: method includes measuring of radiation energy emitted on plants taking into account efficiency of each wave length within the range of 300-3000 nm and determination of the aggregate exergy. Energy portion of optical radiation which is potentially applicable for photoelectric, thermal and photosynthetic conversions is derived and determined. At the same time, radiation efficiency of each wave length is estimated for each type of energy conversion and sum over all wave lengths of the mentioned range. It is converted in photocurrent and intensify photocurrent signal with the preamplifier, thereafter the signals are indicated with the integrator within the time frame and photoelectric, thermal and photosynthetic exergy are evaluated. The values are recorded in memory of the integrator, summed and aggregate exergy value of optical radiation of these three types, which are displayed and use during time-series identification of mentioned three types of exergy is received. The device consists of optical receiver with cosine attachment, photometer, power supply, valuator summing three types of exergy of optical radiation emitting above ground. The valuator is switched over sequentially to measure photoelectric, thermal or photosynthetic exergy. The output of the valuator of exergy is connected with the valuator of photoelectric exergy, thermal exergy and photosynthetic exergy, which are connected with the display with the help of their outputs. Notably, the output of the optical receiver is connected with the output of the valuator. Silicon photocell having spectral sensitivity similar to spectral efficiency of the main photoelectric converter of solar energy, is used the optical receiver. It allows deriving this portion of energy, that is applicable for conversion of solar radiation to electric, thermal and photosynthetic energy, for each wave length. A temperature detector of heat-carrying agent is placed in the receiver in output to the thermal converter, which is connected with the second valuator of thermal exergy by the output.

EFFECT: optimisation while selecting types of optical radiation conversion for agricultural production and other targets.

2 dwg, 1 tbl, 1 ex