Method of determining flow of energy consumption of optical radiation in plant industry

FIELD: agriculture.

SUBSTANCE: according to the method regulation for this type of plant values of percentages of energy in various spectral bands of photosynthetically active radiation (PAR) are set. Range of PAR is isolated from the total flux, energy flow in separate spectral bands of PAR is measured. The percentages of energy in various spectral bands are calculated in relation to the energy of PAR. The value of flow energy consumption of optical radiation is determined by the formula where and are respectively, regulatory, and measured percentages of the energy flux of radiation in the i-th spectral band.

EFFECT: method enables to increase the information content at measurement of value which characterises the energy efficiency of irradiation process.

2 dwg, 1 ex

 

The invention relates to agriculture, crop production in terms of structures protected ground, in particular to spetacular.

There is a method of determining the intensity of the flow of optical radiation in plant breeding, including the allocation of the total radiation flux range of photosynthetic active radiation (PAR); measurement of energy in individual spectral bands; calculating the percentages of energy in individual spectral bands in relation to the energy of the HEADLIGHTS, the magnitude of which is taken for energy flow characteristics [A.S. USSR №1620062, MKI A01G 31/00. The method of growing cucumber / Tikhomirov A.A., Zolotukhin I.G., Lisovsky G.M., Sidko FA, Prokopec LB No. 4650599/13; Appl. 17.02.89; publ. 15.01.91. - Bull. No. 2].

The disadvantage of this method is characteristic affecting plants flow many factors (the percentage composition of radiation)that does not allow optimization of the irradiation process on a single criterion. In addition, to assess the energy efficiency of the irradiation process is also required specifications and standard for this type of plants spectral composition of radiation.

Closest to the invention is a method of determining the intensity of the flow of optical radiation in plant breeding, including the specifications and standard Yes for the aqueous species values the percentages of energy in individual spectral bands of the HEADLAMP; the allocation of the total radiation flux range LIGHTS; measurement of energy flow in separate spectral ranges HEADLIGHTS; calculating the percentages of energy in individual spectral bands in relation to energy HEADLIGHTS; determining values of the coefficient of variation of the spectral composition of the radiation flux from the norm, the value of which is taken for energy flow characteristics [U.S. Pat. 2053644 RF, MPK6A01G 9/24, A01G 31/02. The method of artificial irradiation plants in the process of growing / Recutica S.A.; applicant and patentee Recutica S.A. No. 93008935/15; Appl. 17.02.93; publ. 10.02.96].

The disadvantage of this method is its focus on the measurement of the flow of optical radiation from a biological point of view, taking into account the productivity of plants irradiated by the thread of the given spectral composition. However, improving the relevance of the spectral composition of the light sources of the normative criterion of minimum deflection factor range is not equivalent to a reduction of the intensity of the irradiation process.

The technical result of the invention is to increase the information content in the measurement of quantities characterizing the energy efficiency of the irradiation process.

The method of determining the intensity of the flow of optical radiation is as follows.

1 - ask normatively this species the values of the percentages of energy in individual spectral bands of the HEADLAMP;

2 - allocate the amount of radiation the range of the HEADLIGHTS;

3 - measure the power flow in the individual spectral ranges HEADLIGHTS;

4 - calculate the percentage of energy in individual spectral bands in relation to energy HEADLIGHTS;

5 - determine the value of the intensity of the flow of optical radiation by the formula:

,

whereandaccordingly normative and measured the percentage of energy of the radiation flux in the i-m spectral range.

Significant new features:

5 - determine the value of the intensity of the flow of optical radiation by the formula:

,

whereandaccordingly normative and measured the percentage of energy of the radiation flux in the i-m spectral range.

These new significant features in conjunction with the known allow to obtain a technical result, in all cases to which the requested amount of legal protection.

1 shows a diagram for determining the intensity of the flow of optical radiation during irradiation of plants. Positions are marked: 1 - irradiation facility, 2 - field optical radiation, 3 - irradiated plants. Symbols denote: Q1- the energy, aeriruemoy irradiation installation, Q2energy, perceived useful plants, ε is the energy flow of optical radiation.

Figure 2 shows the results of measuring the intensity of the flow of optical radiation in a triangular coordinates. Point a corresponds to the normative values of the spectral composition of the radiation flux, the point - measured values for the considered numerical example.

The basis of the invention are the following provisions.

In accordance with the generally accepted definition under the energy understand the energy consumption and / or fuel for main and auxiliary technological processes of production, performance of works, rendering of services on the basis of a given technological system [GOST R 51387-1999. The energy saving. Normative and methodological support. The main provisions. With an introd. 2000-07-01].

The numerical expression of the intensity of the system is the index representing the ratio of the energy consumed by the system (energy input), the quantity characterizing the functioning of this system (energy output). As applied to the flow of optical radiation energy input is the energy generated by irradiation facility for creating specific parameters of the radiation regime of plant. Under the output energy should be understood ene is Gia, which can be useful perceived by plants with regard to their requirements for the spectral parameters of the radiation flux. The formula for calculating the intensity, Rel. units:

where Q1the energy generated by the irradiation installation, W;

Q2energy, perceived useful plants, watts.

For the generated irradiation field installation of optical radiation, the energy value is a measure of energy efficiency of energy transfer flow of optical radiation irradiated to the object (plants).

Currently, in accordance with applicable industry methods the spectral composition of the radiation is characterized by the ratio of the radiation intensity of the three spectral ranges of ki, %: blue kblue(400..500 nm), green kgreen(500..600 nm) and red kkr(600..700 nm) range LIGHTS (400...700 nm). Productivity irradiated plants increases when approaching the generated spectral flow parameters to standard values. For some spetacular found spectral ratio that provides the best results. For example: for cucumber -for tomato[Prokopec LB Optimization of radiation spectrum for growing vegetables in intense the Noi lighting / Lbericba, You // Svetotekhnika. - 1992. - No 3. - C.5-7].

Per unit of time transmitted by irradiation of the plants energy, W, is determined by the formula:

where E is the irradiance, W/m2,

S - area of the irradiated surface, m2.

In the absence of data about the desired spectral composition of radiation for plants under the irradiance E understand posed integral irradiance E0as the surface energy density of the entire range of wavelengths generated by the irradiation installation.

With the known spectral characteristics of flow normalized values become oblojennosti in separate spectral bands:

where ki- the proportion of flow in the i-th spectral range, Rel. units

Typically, the actual spectral composition of radiation is different from the norm, i.e. the values ofnot equal. The deviation of the real spectrum from normative leads to losses, which increases the intensity of the irradiation process. The nature of these losses related to the need to provide the required irradiance in the most "scarce" spectral range, and overestimated it in other bands for some value of kC, Rel. unit (coefficient inflated):

When the volume is inflated and the total energy consumed by irradiation facility:

Then, from the definition of energy intensity, it should:

Thus, numerically, the energy intensity is equal to the value of the coefficient is inflated, defined by the formula (4).

The method is as follows.

According to the results of preliminary experiments or from literature sources regulatory ask for this type of plants percentage share of energy in certain spectral ranges HEADLIGHTS; allocate from the total radiation flux range of the HEADLIGHTS; measure the power flow in the individual spectral ranges HEADLIGHTS; calculate the percentage of energy in individual spectral bands in relation to energy HEADLIGHTS; determine the value of the intensity of the flow of optical radiation by the formula:

,

whereandaccordingly normative and measured the percentage of energy of the radiation flux in the i-m spectral range.

Example. Is the exposure of the culture of the cucumber. The way leading to the following sequence.

Ask normative for a given plant species percentage share of energy in certain spectral ranges. For cucumber.

Isolated from the General flow of the radiation range of the HEADLIGHTS. Measure the power in individual spectral bands of the stream of HEADLIGHTS. Calculate the percentage of energy in individual spectral bands in relation to the energy BEAM. Let a percentage equal to.

Determine the value of the intensity of the flow of optical radiation:

The found value is a measure of energy efficiency of the irradiation process, the culture of the cucumber.

Calculate values of energy intensity for various combinationsbuild a graph in a triangular coordinate shown in figure 2, which is used to directly determine the value of the intensity of flow by its spectral composition.

The method of determining the intensity of the flow of optical radiation in the plant, namely that regulatory ask for this type of plants percentage share of energy in individual spectral bands of photosynthetic active radiation (PAR); allocate from the total radiation flux range of the HEADLIGHTS; measure the power flow in the individual spectral ranges HEADLIGHTS; calculate the percentage of energy in individual spectral bands in relation to energy HEADLIGHTS, characterized in that the value of the intensity of the flow of optical radiation is determined by the formulabr/> whereandaccordingly normative and measured the percentage of energy of the radiation flux in the i-m spectral range.



 

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