Local and System Exergy Losses in Cogeneration Processes

In cogeneration processes a major product appears as well as one or more by-products. The cumulative consumption of primary non-renewable exergy burdening the major product can be determined by means of the principle of avoided expenditures, assuming that the utilization of by-products eliminates the exergy consumption in the subprocess replaced by that utilization. The mentioned principle makes it usually possible to determine the consumption of raw materials and semi-finished products burdening the major product. That determination is, however, not possible if the by-product replaces some imported material, because such material burdens with the exergy consumption the total domestic production system.

Keywords:

cogeneration process, cumulative exergy imported materials,

PDF

___

Boustead, I. and Hancock, G. F., 1979, Handbook of Industrial Energy Analysis, Ellis Horwood, Chichester.
Chapman, P. F., Learch, G. and Slesser, H., 1974, "2. Energy Costs of Fuels", Energy Policy, Vol. 2, pp. 231-243.
Stanek, W., 1999, " System Analysis of the Choice of Thermal Parameters of Blast and of the Addition of Auxiliary Fuels in a Blast-Furnace Process" (in Polish), PhD dissertation, Institute of Thermal Technology, Technical University of Silesia, Gliwice.
Stanek, W., 2001, "Iterative Method to Evaluate the Ecological Cost of Imported Goods" Intern. Journal of Applied Thermodynamics, Vol. 4, No. 4, pp. 191-198.
Szargut, J., 1989. "Analysis of the Cumulative Exergy Losses at the Production and Delivery of Heat from the HP-plant" (in Polish). Archiwum Energetyki, No. 4, pp. 187-203.
Szargut, J. and Morris, D. R., 1987, "Cumulative Exergy Consumption and Cumulative Degree of Perfection of Chemical Processes", Energy Research, Vol. 11, No. 11, pp. 245-261.
Szargut, J., 1987, "Influence of the Imported Goods on the Cumulative Energy Indices", Bulletin of the Polish Academy of Sciences, Technical Sciences, Vol. 35, Nos. 9-10, pp. 591-595.
Szargut, J., 1992, "Gross and Net Exergy Losses in the Technological Networks", Bulletin of the Polish Academy of Sciences, Technical Sciences, Vol. 40, No. 5, pp. 69-77.
Szargut, J., 2001, "Sequence Method of Determination of Partial Exergy Losses in Thermal Systems", Exergy, an Intern. Journ., Vol. 1, No. 2, pp. 85-90.
Szargut, J., 2005, Exergy Analysis: Technical and Ecological Applications, WIT-PRESS, 2005, Southampton-Boston.
US Department of Energy, 1978, "PURPA" (Public Utility Regulatory Policies Act).
Wagner, J., 1962, "Partition of Own Production Costs in a HP-plant between the provided electricity and heat" (in Polish), PAN Committee of Polands Electrification, Proceedings, Vol. 5, PWN, Warszawa.

International Journal of Thermodynamics-Cover

ISSN: 1301-9724
Yayın Aralığı: Yılda 4 Sayı
Başlangıç: 1998
Yayıncı: -

Arşiv