Professor Dr. Vladimir S. Stepanov (auth.), Professor Dr.'s Analysis of Energy Efficiency of Industrial Processes PDF

By Professor Dr. Vladimir S. Stepanov (auth.), Professor Dr. Vladimir S. Stepanov (eds.)

It is universally famous that the tip of the present and the start of the subsequent century can be characterised via a thorough swap within the current developments within the financial improvement of all nations and a transition to new rules of financial administration at the foundation of a source and effort conservation coverage. therefore there's an pressing necessity to check equipment, technical aids and financial effects of this alteration, and especially, to figure out the potential quantities of strength assets which can be conserved (energy "reserves") in several spheres of the nationwide economic system. An elevated curiosity in the direction of strength conservation in undefined, one of many greatest power shoppers, is kind of usual and is manifested through the massive num­ ber of courses in this subject. however the majority of guides are dedicated to the answer of narrowly outlined difficulties, selection of power reserves in particular methods and vegetation, potency estimation of person strength conserva­ tion measures, and so forth. in spite of the fact that, it's important to improve a basic methodological method of the answer of such difficulties and create a systematic and methodical base for understanding an power conservation coverage. Such an attempt is made during this publication, that is occupied with tools for learning strength use potency in technological procedures and estimation of the theoretical and genuine strength reserves in a given approach, expertise, or commercial zone at the foundation in their entire power balances.

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Extra info for Analysis of Energy Efficiency of Industrial Processes

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It is assumed that at the standard values of pressure and temperature (po and To) all the components of this environment are in thermodynamic equilibrium and hence their chemical energy and exergy are equal to zero. 3. The most widely spread (and as a rule mst devaluated) substance within the corresponding bounds of the real environment is recommended to be selected as a reference species for each element. Ahrendts raised questions about both Szargut's technique and model of the environment [2, 3].

Szargut, who proposed a method for calculating the energy and exergy of substances, proved to be a step forward in developing the method for drawing up energy balances. The energy and exergy of chemical compounds calculated by him can be used just as calorific value and heat of combustion in chemistry and energetics [173-187]. Thus there is no need to write out all the chemical reactions proceeding in a given process to determine the amount of energy (heat) released and used. This considerably simplifies and streamlines the calculations.

14,15), as the values of the standard enthalpy and Gibbs energy of their fonnation are unknown. Besides, the stoichiometry of the components in the fuel are also unknown. Therefore, the calculation of chemical energy and exergy of fuels with non-unifonn and unknown composition requires various approximation methods. For example, the chemical energy of fuel can be calculated from known characteristics such as high and low calorific values for the fuel mass as-received, moisture-free and dry-and-ash-free (Qrec; Qrnsf; Qdaf) as well as the heat of combustion L1Hgorn .

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