Method of control of radiation energy saving mode at supplementary lighting of plants

FIELD: agriculture.

SUBSTANCE: in the process the flow of optical radiation of normalised is formed for the given crop plant intensity and duration. The spectral parametres of the flow are created that affect the plants by combined effect of several light sources of different specters. At that in preliminary experiments different ratios of one deal of one of the light sources in the general flow are imposed. Values of combination coefficient of sources flows in the general flow are calculated for the given ratios according to the formula , where ΦA, ΦB are respectively flows from sources A and B; the spectral fraction of the overall flow is calculated according to the formula where , are respectively the deals of flows in the i-th spectral ranges of sources A and B. Values of energy consumption are calculated by the formula , where are normalised values for the irradiated crops. The functional dependence of the energy consumption from the flow combination coefficient rate εµ=f(µ) is determined. Radiation regime is set at the value of the combination coefficient of flows, as corresponding to a minimum on the obtained functional dependence by changing the deal of flows from used light sources that form irradiance at the site of growing plants.

EFFECT: method provides energy savings at the regulation of radiation mode.

2 dwg, 1 tbl, 1 ex

 

The invention relates to agriculture, greenhouse crop production, in particular to spetacular, and can be used when growing plants is mainly in the breeding climatic facilities, where the quality requirements of the radiation regime of the most high.

Parameters of the radiation mode when additional light plants are the intensity of exposure, duration of exposure and the spectral composition of the stream.

There is a method of energy-saving regulation of the radiation regime, including the formation by light sources (IP)affecting plants flow of optical radiation, determining the fraction of the energy flow of each IP in each spectral range, determining the value of the coefficient of variation of the spectral composition of the radiation flux of these IP from the norm, the use of irradiation plants IP with a minimum value of the coefficient of variation of the spectral composition of the radiation flux from the normative [U.S. Pat. RF 2053644, IPC6A01G 9/24, A01G 31/02. The method of artificial irradiation plants in cultivation. 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 that improving the relevance of the spectral composition of IP regulatory on criter the th minimum deflection factor range is not equivalent to a reduction of the intensity of the irradiation process (i.e. to save energy).

The closest technical solution is a method consisting in the following:

1. Form the flow of optical radiation normalized to plant this crop intensity and duration.

2. Spectral indices affecting plant flow for the combined effect of several ratespecial IP.

3. Determine the functional dependence of the coefficient of deviation of the spectrum from the combined ratio of threads used ratespecial IP.

4. The value of the last irradiation plants take from the condition of minimum values of the coefficient of variation of the spectrum for this type cultures [application for invention IPC6A01G 9/24, A01G 9/26. The method of regulation of artificial irradiation when growing plants. Recutica S.A. the Complainant far Eastern state agrarian University. No. 96120525/13; Appl. 08.10.1996; publ. 10.02.1998].

The main disadvantage of the known technical solution is not the equivalence of providing the desired spectral composition of radiation to reduce energy consumption.

The technical result of the invention is the provision of energy saving in the regulation of radiation mode.

The way of energy-saving regulation of radiation mode when additional light plants which s is as follows.

1. Form the flow of optical radiation normalized to plant this crop intensity and duration.

2. Spectral indices affecting plant flow for the combined effect of several ratespecial IP.

3. Determine the functional dependence of the energy intensity of the irradiation process plants from the coefficient of the combination of threads used ratespecial IP.

4. The value of the last irradiation plants take the minimum values of intensity.

Significant new features:

3. Determine the functional dependence of the energy intensity of the irradiation process plants from the coefficient of the combination of threads used ratespecial IP.

4. The value of the last irradiation plants take the minimum values of intensity.

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.

Figure 1 shows the dependence of the share of energy in the spectral ranges of the total flux from the coefficient of the combination of threads ki=f(µ) two ratespecial IP. Figure 2 shows the functional dependence of the energy intensity of the process of irradiation plants from the coefficient of the combination of threads ε µ=f(µ) two ratespecial IP.

The basis of the invention are the following provisions.

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). For some spetacular found spectral ratiosto provide the best results. For example: for cucumber -for tomato[Prokopec LB Optimization of radiation spectrum for growing vegetables under heavy lighting. Lbericba, Amy. The lighting. - 1992. No. 3. - Pp.5-7]. The intensity of the irradiation process theoretically minimum and equal to unity at full conformity of generated values of kinormalized values.

Analysis of the spectrum of the radiation used for irradiation of plants IP shows that there are no industrial output source, the emission spectrum of which set of kithat exactly meet the requirements of the considered crops, asked.

To approximate the spectral parameters of flow normalized to possibly not is how many ratespecial IP. For two sources (A and B) the share of each IP flow is characterized by the coefficient of the combination of threads

where fAFBaccordingly flows from sources A and B.

When this spectral percentage in the total radiation

where,correspondingly the share of flows in the i-th spectral ranges of sources A and B.

The deviation of the spectral parameters from the normalized values leads to additional losses, which increases the intensity of the irradiation process. The nature of emerging losses associated with the need to provide the required dose in a "scarce" spectral range, and overestimated it in the other ranges.

In this case, the energy intensity

To ensure energy efficiency is necessary to set the irradiation facility corresponding to the minimum functional dependence εµ=f(µ).

The method is conducted as follows. Form the flow of optical radiation normalized to plant this crop intensity and duration, spectral composition affecting plants flux provide the combined action of several ratespecial IP, determine funkcionalno the dependence of the energy intensity of the irradiation process plants from the coefficient of the combination of threads used ratespecial IP the value of the last irradiation plants take from a minimum value of intensity.

Mode irradiation facility (the share of energy from each IP) set, based on the requirement to ensure the values of the coefficient of the combination of threads.

Example. In spetacular cucumber (regulatory requirements for spectral compositionapply IP type DNAT (source A, the spectral composition of the radiation is characterized by the coefficientsand DRY (source B, the spectral composition of the radiation is characterized by the coefficients.

The intensity and duration of exposure is prescribed based on the technological requirements.

For the entire range of variation of the coefficient of the combination of threads (0≤µ≤1) by the formulas (2) and (3) find the fractional flowsand the intensity εµ(see table).

The spectral composition of the flows and the intensity of the irradiation
µSource ASource BThe total flowε/td>
0,00003943183943182,39
0,10,75,63,735,138,716,235,844,3to 19.92,16
0,21,411,27,431,23,4 14.4V32,645,621,81,97
0,32,116,811,127,330,112,629,446,923,71,81
0,42,822,414,823,425,810,826,248,225,61,68
0,53,52818,519,5a 21.592349,527,51,56
0,64,233,622,2the 15.617,2/td> 7,219,850,829,41,46
0,7a 4.939,225,911,712,9of 5.416,652,131,31,37
0,85,644,829,67,88,63,6the 13.453,433,21,30
0,96,350,433,3a 3.94,31,810,254,735,11,67
1,07563700 0756372,43

The obtained values ofand ε lay on the charts (Fig 1, 2). From the graphs found that the minimum value of the intensity (εmin=1,3) is observed at optimal factor combinations flows µopt=0,8.

Mode irradiator set in such a way that 80% of the energy on dosvechivanie plants was provided by action DNAT, and 20% DRY.

The way of energy-saving regulation of radiation mode when additional light plants, including the formation of flow of optical radiation normalized to plant this crop intensity and duration, creating a spectral indices affecting plants flow to the combined action of several ratespecial light sources, characterized in that in the preliminary experiments set different ratios of the share of one of the light sources in the General flow; calculate values of the coefficient of the combination flow sources in the General flow for specified ratios by the formula,
where fAndFInaccordingly flows from sources a and b; compute spectral share in the total flow by the formula
,
where,correspondingly the share of flows in the i-th spectral ranges of sources a and b;
calculate values of the intensity according to the formula
,
where- normalized values for irradiated cultures;
determine the functional dependence of the intensity of factor combinations flows εµ=f(µ); radiation mode is set when the value of the coefficient of the combination of threads corresponding to the minimum functional relationships are obtained by changing the proportion of flow from the applied light sources forming the irradiance in the place of growing plants.



 

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