U-co2en

CO2 generation

23/03/2009 CO2 generation Function Abstract

In this study, an analysis is exposed for the conformation of the functions that allow to deduce the CO2 generation. You begin with the general presentation, already well-known; next the proposal is explained that it already supplements the well-known. In general the contribution explains relationship with the introduction in the original function of terms that involve to the whole spectrum of use of the inputs and the infrastructure that carries out the transformation. This project is devoted to the energy case.

Current state At the moment the general function for the evaluation of CO2 generation, is of the type: CO2 - U = ∑ qi * ( producer ) - ∑ contribution ( bonus )

(1)

Among the generators we have to the energy ones, then (1), transforms in: CO2 - U = ∑ fe * C + ∑ qi * ( producer ) - ∑ contribution ( bonus )

(2)

Another generator can be the human beings, then (2) transforms in: CO2 - U = ∑ fe * C + ∑ h * Hu + ∑ qi * ( producer ) - ∑ contribution ( bonus )

(3)

Another generator can be the vehicle transport, then (3) transforms in: CO2 - U = ∑ fe * C + ∑ h * Hu + ∑ 3,16 * Tr + ∑ qi * ( producer ) - ∑ contribution ( bonus )

(4)

Proposal: For the industrial-business case, buildings, households, the functions of the type: ∑ fe * C are not complete since they lack of a term that indicates the efficiency so the resources has been used. in the case of the CO2 generation, for transformation of the energy, we have: CO2 - U = g { foundations that transforms the energy, way of use of the infraestructure, localization, thermodynamic of the infraestructure and energy, energy types, productivity, energy consumption, energy transfer, environment and materials of the localization }

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CO2 generation

23/03/2009

= g { energy consumption, foundations that transforms the energy, way of use of the infraestructure, localization, thermodynamic of the infraestructure and energy, energy types, productivity, energy transfer, environment and materials of the localization } infraestructure that transforms the energy = j ( mechanical, chemical, electric parameter ) but EE = h{ j ( p ), way of use of the infraestructure, localization, thermodynamic of the infrastructure and energy, energy types, productivity, energy transfer, environment and materials of the localization } therefore

CO2 - U = g { energy consumption, EE } = z [ energy consumption ] + r [ EE ] = fe * energy consumption + k * EE

fe = energy unit factor for CO2 generation C = energy consumption EE = energy efficiency Then

CO2 – U = fe * C + k * EE

The factor k * EE, in many studies is not considered, or it is rejected. The reason is that an algebraic method didn't exist to determine the EE (expressed in % ), with all the involved variables. A graph of this kind of function could be like this: CO2 - U

Limit

10 20 30 40 50 60 70 80 90 100 100 100 100 ( % ) EE

As the energy efficiency increases, the CO2 generation, goes diminishing until a value in which is no longer possible more reduction, the optimum it has been reached (100%). A threshold of CO2 generation exists, to diminish that limit is impossible. Artequim.com

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CO2 generation

23/03/2009

Carried out the rehearsals we have concluded that the term k*EE, has the following conformation: k * EE = - [( 7* √ C ) / 270]* EE + log( EE / √ C ) then for the case of CO2 generation considering energy efficiency, the function CO2 - U, it is of the type:

CO2 - U /e = fe * C - [( 7*√ C ) / 270 ]* EE + log( EE / √ C ) For the other types of generators, we can mention the case of the vehicle transport for which one has: CO2 - U

/t

= 3,16 * C - r * ( [ VSP ] r / [ VSP ] t ) * 100

The term r * VSPj, denotes efficiency in the use Where VSP (vehicle specific power) of the model IVE, has the form: VSP = v [ 1,1*a + 9,81 sen ( arctg ( grade ) ) + 0,132 ] + 0,000302 * v 3 term: 3,16 * C, term: VSP,

C. Ghirardelli, PhD, 2008.

J.L. Jimenez , PhD, 1999.

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