CN105589834A - Method for determining energy consumption of unit product based on energy consumption of unit output value - Google Patents

Abstract

The embodiment of the invention discloses a method for determining energy consumption per unit product based on energy consumption per unit output value. The method comprises following steps: selecting sample points of a corresponding quantity in a short term according to the specifications and kinds of products; calculating a total output value according to the sale price of each kind of products and the qualified output of each kind of products; calculating total energy consumption according to energy consumption of unit output value and the total output value; building a relation equation according to an energy balance relation; substituting the total energy consumption corresponding to each sample point and the qualified output of each kind of products into the relation equation, thus obtaining an equation set; analyzing the solution space of the equation set; and calculating the energy consumption per unit product of each kind of products. According to the method for determining energy consumption per unit product based on energy consumption per unit output value provided by the embodiment of the invention, the relation expression of the energy consumption per unit output value and the energy consumption per unit product is built through the energy balance relation; through reasonable assumption, the sample points of the corresponding quantity in the short term are selected; the equation set is built; the solution space is analyzed; and the energy consumption per unit product of each kind of products is solved.

Description

A kind of method of determining energy consumption of unit product based on the energy consumption per unit of output value

Technical field

The present invention relates to energy consumption measurement technical field, particularly relate to one and determine unit product energy based on the energy consumption per unit of output valueThe method of consumption.

Background technology

Comprehensive energy consumption is the various energy quantities of goods produced of energy unit actual consumption within the statistical report phase, calculating side in accordance with regulationsSummation after method and unit are converted respectively. Evaluating at present the turn out a produce index unit of mainly containing of efficiency level of enterprise producesValue energy consumption and energy consumption of unit product.

The energy consumption per unit of output value is the ratio with total industrial output value by industrial comprehensive energy consumption, is to consider from the angle of economic worthThe index of enterprise's efficiency level, although can be used for to a certain extent evaluating the efficiency level that enterprise turns out a produce,But due to reasons such as the ratio that product price changes, each product accounts for total output change, even if enterprise's efficiency level is constant,The energy consumption per unit of output value also there will be fluctuation.

Energy consumption of unit product is the ratio of comprehensive energy consumption with corresponding qualified products output of actual consumption of turning out a produce. RootKnown according to above-mentioned definition, energy consumption of unit product directly reflects the efficiency level that enterprise turns out a produce, and is not subject to otherThe impact of nonproductive factor. But produce two or more products when enterprise, and when metering system imperfection, cause producingThe energy consumption of unit product of certain product is difficult to calculate.

In sum, the energy consumption per unit of output value is convenient to calculate, but is difficult to objectively respond the efficiency level of enterprise, unit product energyAlthough consumption can objectively respond the efficiency level of enterprise, be often difficult to measuring and calculating. Therefore, produce certain in order to evaluate enterpriseThe efficiency level of product, is badly in need of a kind of method of determining energy consumption of unit product based on the energy consumption per unit of output value.

Summary of the invention

A kind of method of determining energy consumption of unit product based on the energy consumption per unit of output value is provided in the embodiment of the present invention, existing to solveThere is the energy consumption of unit product of multiple product in technology to be difficult for definite problem.

In order to solve the problems of the technologies described above, the embodiment of the invention discloses following technical scheme:

A method of determining energy consumption of unit product based on the energy consumption per unit of output value, comprising:

According to the specification kind number of product, choose the sample point of corresponding number in a short time, and add up the unit product of each sample pointValue energy consumption, the selling price of various products and the qualified output of various products;

Calculate the gross output value according to the qualified output of the selling price of various products and various products;

Calculate total energy consumption according to the described energy consumption per unit of output value and the described gross output value;

According to energy balance relations, list the qualified output of total energy consumption, various products and the energy consumption of unit product of various productsRelation equation formula;

By relation equation formula described in the qualified output substitution of corresponding each sample point total energy consumption and various products, the side of obtainingJourney group, in wherein said equation group, equational quantity is identical with the quantity of described sample point;

The solution space of analysis equation group, calculates the energy consumption of unit product of various products.

Preferably, described equation group is set up to matrix expression: AX=b, wherein A represents the qualified output of various products,X is solution vector, represents the energy consumption of unit product of various products, and b represents total energy consumption;

If the specification kind number of described product is n, the solution space of described analysis equation group, the unit that calculates various products producesProduct energy consumption, specifically comprises:

Whether the order k that judges the coefficient matrix of equation group equals n;

If k equals n, calculate described solution of equations vector X, obtain the energy consumption of unit product of various products;

If k is not equal to n, reject n-k sample point in equation group, again get n-k new sample point in a short time;

Relation equation formula described in the qualified output substitution of corresponding new sample point total energy consumption and various products is obtained to n-kIndividual new equation;

By the equation group of n-k sample point of equation new described n-k and described rejecting with and form new equation group;

Return to above-mentioned steps, judge whether the order k of the coefficient matrix of equation group equals n.

Preferably, reject n-k sample point in equation group, specifically comprise:

In n-k corresponding equation of sample point of rejecting and equation group, remaining equation has linear dependence.

Preferably, describedly choose the sample point of corresponding number in a short time according to the specification kind number of product, specifically comprise:

Obtain according to the specification kind number of product the sample point of counting in a short time equal number with the specification kind of product.

Preferably, the described qualified output according to the selling price of various products and various products is calculated the gross output value, specifically bagDraw together:

The selling price of each product and qualified output are multiplied each other and Cumulative sum, obtain the gross output value.

Preferably, described according to the described energy consumption per unit of output value and described gross output value calculating total energy consumption, specifically comprise:

The described energy consumption per unit of output value and the described gross output value are multiplied each other and obtain total energy consumption.

Preferably, according to energy balance relations, list the qualified output of total energy consumption, various products and the unit of various productsThe relation equation formula of product energy consumption, specifically comprises:

Total energy consumption equals the qualified output of each product and the sum of products of energy consumption of unit product.

From above technical scheme, the one that the embodiment of the present invention provides is determined unit product energy based on the energy consumption per unit of output valueThe method of consumption is utilized energy balance relations, sets up the relational expression of the energy consumption per unit of output value and energy consumption of unit product, by reasonable vacationIf, get the sample point of corresponding number in a short time and list equation group, and solution space is analyzed, solve and obtain various productsThe energy consumption of unit product of product. This method has not only been set up the relation of the energy consumption per unit of output value and energy consumption of unit product, Er QietiSupply the method according to measuring and calculating energy consumption of unit product according to several sample points of enterprise, by the analysis to solution space, guaranteedUniqueness of solution.

Brief description of the drawings

In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existingIn technical description, the accompanying drawing of required use is briefly described, apparently, for those of ordinary skill in the art andSpeech, is not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.

Fig. 1 a kind ofly determines that based on the energy consumption per unit of output value method flow of energy consumption of unit product shows for what the embodiment of the present invention providedIntention;

The concrete grammar schematic flow sheet of step S600 in Fig. 1 that Fig. 2 provides for the embodiment of the present invention.

Detailed description of the invention

In order to make those skilled in the art person understand better the technical scheme in the present invention, below in conjunction with the invention processAccompanying drawing in example, is clearly and completely described the technical scheme in the embodiment of the present invention, obviously, and described realityExecuting example is only the present invention's part embodiment, instead of whole embodiment. Based on the embodiment in the present invention, abilityTerritory those of ordinary skill is not being made the every other embodiment obtaining under creative work prerequisite, all should belong to thisThe scope of invention protection.

Fig. 1 a kind ofly determines that based on the energy consumption per unit of output value method flow of energy consumption of unit product shows for what the embodiment of the present invention providedIntention, as shown in Figure 1, the method comprises the following steps:

Step S100: according to the specification kind number of product, choose the sample point of corresponding number in a short time, and add up each sampleThe energy consumption per unit of output value, the selling price of various products and the qualified output of various products of point;

Due in a short time, (for example weekly) energy consumption of unit product is substantially constant, therefore, and sample in embodiments of the present inventionThis point is chosen sample point in a short time. Be specially, add up the energy consumption per unit of output value of each sample point, the sale of various productsThe qualified yield data of price and various products. Wherein, the quantity of sample point can be definite according to the specification heatstroke of product,The specification kind number of for example product is n, the related data of adding up n sample point.

For example, in i sample point, the qualified output of various products is designated as respectively: P1i, P2i, P3i ..., Pni,Wherein, Pni represents the qualified output of n kind product in i sample point; The selling price of various products is designated as: V1i,V2i, V3i ..., Vni, wherein, Vni represents the qualified output of n kind product in i sample point; Unit output valueEnergy consumption is designated as: R0i.

Step S200: calculate the gross output value according to the qualified output of the selling price of various products and various products;

In embodiments of the present invention, the selling price of each product and qualified output are multiplied each other and Cumulative sum, obtain totalThe output value. In i sample point, the computing formula of the gross output value is as shown in the formula shown in one:

Formula one:

V0i＝V1i·P1i+V2i·P2i+V3i·P3i+...+Vni·Pni

Wherein, VOi is the gross output value in i sample point.

Step S300: calculate total energy consumption according to the described energy consumption per unit of output value and the described gross output value;

In embodiments of the present invention, the described energy consumption per unit of output value and the described gross output value are multiplied each other and obtain total energy consumption. I sampleIn this point, the computing formula of total energy consumption is suc as formula shown in two:

Formula two:

E0i＝R0i·V0i

Wherein, E0i is the total energy consumption in i sample point.

Step S400: according to energy balance relations, list the qualified output of total energy consumption, various products and the list of various productsThe relation equation formula of position product energy consumption;

In embodiments of the present invention, total energy consumption equal the qualified output of each product and the product of energy consumption of unit product itWith, the energy consumption of unit product of various products is designated as: R1, R2, R3 ..., Rn, wherein, Rn represents n kind productEnergy consumption of unit product. In i sample point, the qualified output of total energy consumption, various products and the unit of various products produceThe relation equation formula of product energy consumption is suc as formula shown in three:

Formula three:

E0i＝R1·P1i+R2·P2i+...+Rn·Pni

Step S500: by relation equation described in the qualified output substitution of corresponding each sample point total energy consumption and various productsFormula, obtains equation group, and in wherein said equation group, equational quantity is identical with the quantity of described sample point;

In embodiments of the present invention, corresponding each sample point data substitution formula three is obtained one corresponding with this sample pointEquation, the combination of all equations is obtained to corresponding equation group. Hence one can see that, in embodiments of the present invention equation groupIn equational quantity identical with the quantity of the sample point of sampling, and the quantity of sample point is identical with the specification kind number of product,The specification kind number that can determine product is same identical with equational quantity in equation group.

The specification kind number of supposing product is n, and a corresponding n equation in equation group supposes that separate equation formula all meets non-lineProperty related condition, can determine the unique solution vector of equation group, tries to achieve the energy consumption of unit product of various products.

Step S600: the solution space of analysis equation group, calculate the energy consumption of unit product of various products.

In embodiments of the present invention, for the ease of equation group is analyzed, set up the matrix expression of equation group: AX=b,Wherein A represents the qualified output of various products, and X is solution vector, represents the energy consumption of unit product of various products, and b representative is totalEnergy consumption. The matrix expression (AX=b) of equation group is suc as formula shown in four:

Formula four:

$\left[\begin{array}{ccccc}P11& P21& P31& ...& Pn1\\ P12& P22& P32& ...& Pn2\\ P13& P23& P33& ...& Pn3\\ ...& ...& ...& ...& ...\\ P1n& P2n& P3n& ...& Pnn\end{array}\right]\left[\begin{array}{c}R1\\ R2\\ R3\\ ...\\ Rn\end{array}\right]=\left[\begin{array}{c}E01\\ E02\\ E03\\ ...\\ E0n\end{array}\right]$

Wherein, the coefficient matrix in formula four is suc as formula shown in five:

Formula five:

$\left[\begin{array}{ccccc}P11& P21& P31& ...& Pn1\\ P12& P22& P32& ...& Pn2\\ P13& P23& P33& ...& Pn3\\ ...& ...& ...& ...& ...\\ P1n& P2n& P3n& ...& Pnn\end{array}\right]$

The concrete grammar schematic flow sheet of step S600 in Fig. 1 that Fig. 2 provides for the embodiment of the present invention, as shown in Figure 2,Step S600 specifically also comprises in embodiments of the present invention:

Step S601: whether the order k that judges the coefficient matrix of equation group equals n;

The number of the order of coefficient matrix and unknown number is compared, and then determine whether to obtain unique solution vector.

Step S602: if k equals n, calculate described solution of equations vector X, obtain the unit product of various productsEnergy consumption;

If the order of coefficient matrix equates with the number of unknown number, determine that equation group has unique solution vector, equation group is askedSeparate and then can obtain various products energy consumption of unit product R1, R2, R3 ..., Rn.

Step S603: if k is not equal to n, reject n-k sample point in equation group, again get in a short time n-k newSample point;

Illustrate that the order of coefficient matrix is less than the number of unknown number, says if the number of the order of coefficient matrix and unknown number is unequalIn bright matrix, there is the sample point with linear dependence, reject n-k sample point in equation group, again get in a short timeN-k new sample point. In order to ensure that the valid data in equation group do not lose, n-k the sample point of rejecting rightIn the equation of answering and equation group, remaining equation has linear dependence, is rejecting after n-k sample point equationThe order of group is still k, and guarantee valid data are not lost.

Step S604: by relation equation described in the qualified output substitution of corresponding new sample point total energy consumption and various productsFormula obtains n-k new equation;

In the data substitution relation equation formula collecting according to new sample point, obtain n-k new equation.

Step S605: by the equation group of n-k sample point of equation new described n-k and described rejecting with and form newlyEquation group, return to step S601.

To in the equation group of n-k new n-k sample point of equation substitution rejecting, obtain new equation group, new sideJourney group has n equation equally, return to step S601 and recalculate, until obtain unique solution vector, realize based onEnergy consumption of unit product is determined in the energy consumption per unit of output value.

Understand better the technical program for the ease of those skilled in the art, below in conjunction with Mou Tong smelting enterprise, according toOutput value energy consumption in the different campaigns of enterprise statistics, calculates the energy consumption of unit product method of various products and carries out furtherlyBright.

Three kinds of different products of known Gai Tong smelting enterprise's production: blister copper, anode copper and sulfuric acid, first choose this enterprise shortThe data of adjacent three days DAY1, DAY2, DAY3 are as representative sample point in phase. This enterprise adjacent four days DAY1, DAY2,The product yield statistics of DAY3, DAY4 is as shown in table 1:

Table 1:

The selling price of product is as shown in table 2:

Table 2:

The energy consumption per unit of output value is as shown in table 3:

Table 3:

Ze Gai copper smelting enterprise is calculated as follows at gross output value VO1, VO2, the VO2 of selected three sample points:

DAY1：V01＝V11·P11+V21·P21+V31·P31

=40000180+60000140+400870=15948000 unit

DAY2：V02＝V12·P12+V22·P22+V32·P32

=40000160+60000120+400780=13912000 unit

DAY3：V03＝V13·P13+V23·P23+V33·P33

=40000170+60000130+400825=14930000 unit

Total energy consumption E01, E02, the E03 calculating formula of three sample points are:

E01＝R01·V01＝179.20tce

E02＝R02·V02＝156.74tce

E03＝R03·V03＝167.97tce

The energy consumption of unit product of supposing these various products of enterprise was constant in one week. According to energy balance relations and institute3 representative sample point DAY1, DAY2 of choosing, the data of DAY3, list 3 equations:

E01＝179.20＝R1·P11+R2·P21+R3·P31

E02＝156.74＝R1·P12+R2·P22+R3·P32

E03＝167.97＝R1·P13+R2·P23+R3·P33

Set up the expression matrix form A1X=b1 of equation group:

$\left[\begin{array}{ccc}180& 140& 870\\ 160& 120& 780\\ 170& 130& 825\end{array}\right]\left[\begin{array}{c}R1\\ R2\\ R3\end{array}\right]=\left[\begin{array}{c}179.20\\ 156.74\\ 167.97\end{array}\right]$

The determinant of the coefficient matrices A 1 of above-mentioned equation is:

$\left[\begin{array}{ccc}180& 140& 870\\ 160& 120& 780\\ 170& 130& 825\end{array}\right]$

The determinant of compute matrix A1:

$\left|A1\right|=\left|\begin{array}{ccc}180& 140& 870\\ 160& 120& 780\\ 170& 130& 825\end{array}\right|=0$

The determinant of matrix A 1 equals 0, so the order of matrix A 1 is less than 3, and the first row row vector of matrix A 1 withThe second every trade SYSTEM OF LINEAR VECTOR is uncorrelated. Therefore, the order of matrix A 1 equals 2, needs Rejection of samples point DAY3.

Get again 1 representative sample point DAY4, calculate gross output value V04, the total energy consumption E04 of new sample point:

DAY4：V04＝V14·P14+V24·P24+V34·P34

=40000170+60000125+400820=14628000 unit

The total energy consumption E04 calculating formula of the 4th sample point is:

E04＝R04·V04＝165.06tce

According to energy balance relations, list new equation:

E01＝179.20＝R1·P11+R2·P21+R3·P31

E02＝156.74＝R1·P12+R2·P22+R3·P32

E04＝165.06＝R1·P14+R2·P24+R3·P34

Set up the matrix expression A2X=b2 of new equation group:

$\left[\begin{array}{ccc}180& 140& 870\\ 160& 120& 780\\ 170& 125& 820\end{array}\right]\left[\begin{array}{c}R1\\ R2\\ R3\end{array}\right]=\left[\begin{array}{c}179.20\\ 156.74\\ 165.05\end{array}\right]$

The determinant of the coefficient matrices A 2 of above-mentioned equation is:

$\left[\begin{array}{ccc}180& 140& 870\\ 160& 120& 780\\ 170& 125& 820\end{array}\right]$

The determinant of compute matrix A2:

$\left|A2\right|=\left|\begin{array}{ccc}180& 140& 870\\ 160& 120& 780\\ 170& 125& 820\end{array}\right|=10000$

The determinant of matrix A 2 is not equal to 0, so the order of matrix A 2 equals 3.

Calculate energy consumption of unit product R1, R2, R3 that enterprise produces various products.

Due to A2X=b2, so X=A2^-1b2：

$\left[\begin{array}{c}R1\\ R2\\ R3\end{array}\right]={\left[\begin{array}{ccc}180& 140& 870\\ 160& 120& 780\\ 170& 125& 820\end{array}\right]}^{-1}\left[\begin{array}{c}179.20\\ 156.74\\ 165.05\end{array}\right]=\left[\begin{array}{c}0.530\\ 0.580\\ 0.003\end{array}\right]$

Therefore, the first product is that the energy consumption of unit product of blister copper is 0.53tce/t blister copper, and the second product is anode copperEnergy consumption of unit product be 0.58tce/t anode copper, the third product is that the energy consumption of unit product of sulfuric acid is 0.003tce/tSulfuric acid.

Not only can, according to the relation of the energy consumption per unit of output value and energy consumption of unit product, calculate unit product according to this kind of methodEnergy consumption, and by analytic solution space, guarantee uniqueness of solution, make method there is good reliability.

From above technical scheme, the one that the embodiment of the present invention provides is determined unit product energy based on the energy consumption per unit of output valueThe method of consumption is utilized energy balance relations, sets up the relational expression of the energy consumption per unit of output value and energy consumption of unit product, by reasonable vacationIf, get the sample point of corresponding number in a short time and list equation group, and solution space is analyzed, solve and obtain various productsThe energy consumption of unit product of product. This method has not only been set up the relation of the energy consumption per unit of output value and energy consumption of unit product, Er QietiSupply the method according to measuring and calculating energy consumption of unit product according to several sample points of enterprise, by the analysis to solution space, guaranteedUniqueness of solution.

It should be noted that, in this article, the relational terms such as " first " and " second " etc. be only used for byEntity or operation and another entity or operating space separate, and not necessarily require or imply these entities or behaviourBetween work, there is relation or the order of any this reality. And term " comprises ", " comprising " or it is anyOther variants are intended to contain comprising of nonexcludability, thus make to comprise a series of key elements process, method, article orEquipment not only comprises those key elements, but also comprises other key elements of clearly not listing, or is also included as this mistakeThe key element that journey, method, article or equipment are intrinsic. In the situation that there is no more restrictions, " comprise one by statementIndividual ... " key element that limits, and be also not precluded within process, method, article or the equipment that comprises described key element and existOther identical element.

The above is only the specific embodiment of the present invention, makes those skilled in the art can understand or realize the present invention.To be apparent to one skilled in the art to the multiple amendment of these embodiment, as defined herein oneAs principle can be in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments. Therefore, thisBrightly will can not be restricted to these embodiment shown in this article, but will meet and principle disclosed herein and features of noveltyThe widest consistent scope.

Claims (7)

1. a method of determining energy consumption of unit product based on the energy consumption per unit of output value, is characterized in that, comprising:

According to the specification kind number of product, choose the sample point of corresponding number in a short time, and add up the unit product of each sample pointValue energy consumption, the selling price of various products and the qualified output of various products;

Calculate the gross output value according to the qualified output of the selling price of various products and various products;

Calculate total energy consumption according to the described energy consumption per unit of output value and the described gross output value;

According to energy balance relations, list the qualified output of total energy consumption, various products and the energy consumption of unit product of various productsRelation equation formula;

By relation equation formula described in the qualified output substitution of corresponding each sample point total energy consumption and various products, the side of obtainingJourney group, in wherein said equation group, equational quantity is identical with the quantity of described sample point;

The solution space of analysis equation group, calculates the energy consumption of unit product of various products.

2. the method for determining energy consumption of unit product based on the energy consumption per unit of output value according to claim 1, is characterized in that,Described equation group is set up to matrix expression: AX=b, wherein A represents the qualified output of various products, X is solution vector,The energy consumption of unit product that represents various products, b represents total energy consumption;

If the specification kind number of described product is n, the solution space of described analysis equation group, the unit that calculates various products producesProduct energy consumption, specifically comprises:

Whether the order k that judges the coefficient matrix of equation group equals n;

If k equals n, calculate described solution of equations vector X, obtain the energy consumption of unit product of various products;

If k is not equal to n, reject n-k sample point in equation group, again get n-k new sample point in a short time;

Relation equation formula described in the qualified output substitution of corresponding new sample point total energy consumption and various products is obtained to n-kIndividual new equation;

By the equation group of n-k sample point of equation new described n-k and described rejecting with and form new equation group;

Return to above-mentioned steps, judge whether the order k of the coefficient matrix of equation group equals n.

3. the method for determining energy consumption of unit product based on the energy consumption per unit of output value according to claim 2, is characterized in that,Reject n-k sample point in equation group, specifically comprise:

In n-k corresponding equation of sample point of rejecting and equation group, remaining equation has linear dependence.

4. the method for determining energy consumption of unit product based on the energy consumption per unit of output value according to claim 1, is characterized in that,Describedly choose the sample point of corresponding number in a short time according to the specification kind number of product, specifically comprise:

Obtain according to the specification kind number of product the sample point of counting in a short time equal number with the specification kind of product.

5. the method for determining energy consumption of unit product based on the energy consumption per unit of output value according to claim 1, is characterized in that,The described qualified output according to the selling price of various products and various products is calculated the gross output value, specifically comprises:

The selling price of each product and qualified output are multiplied each other and Cumulative sum, obtain the gross output value.

6. the method for determining energy consumption of unit product based on the energy consumption per unit of output value according to claim 1, is characterized in that,Described according to the described energy consumption per unit of output value and described gross output value calculating total energy consumption, specifically comprise:

The described energy consumption per unit of output value and the described gross output value are multiplied each other and obtain total energy consumption.

7. the method for determining energy consumption of unit product based on the energy consumption per unit of output value according to claim 1, is characterized in that,According to energy balance relations, list the pass of the qualified output of total energy consumption, various products and the energy consumption of unit product of various productsBe equation, specifically comprise:

Total energy consumption equals the qualified output of each product and the sum of products of energy consumption of unit product.