Browsing by Subject "THERMOECONOMIC ANALYSIS"

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    Exergoeconomic analysis of small industrial pasta drying systems
    (PROFESSIONAL ENGINEERING PUBLISHING LTD) Ozgener, L
    In the current study, author performs an exergoeconomic analysis of an industrial pasta final drying process. The relations between capital costs and thermodynamic losses for the devices in the system are investigated. Thermodynamic loss rate-to-capital cost ratios are used to show that, for the devices and the overall system, a systematic correlation appears to exist between capital cost and exergy loss (total or internal), but not between capital cost and energy loss or external exergy loss. This correlation may imply that devices in a successful industrial pasta drying system is configured so as to achieve an overall optimal design, by appropriately balancing the thermodynamic (energy- and exergy-based) and economic (cost) characteristics of the overall system. Thermodynamic loss rate to capital cost values R-en and R-ex are obtained as 0.016-0.004, while total energy rate input value to system change between 304.85 and 316.25 kW. Energetic and exergetic efficiencies of the system processes are determined in an attempt to assess their individual performances. The energy and exergy efficiencies of the overall system are found to be as 72.1 and 65.4 per cent, respectively.
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    Exergoeconomic assessment of a wind turbine power plant (WTTP): Cesme, Izmir, example
    (PERGAMON-ELSEVIER SCIENCE LTD) Baskut, O; Ozgener, L
    This present paper deals with exergoeconomic results of the Wind Turbine Power Plants (WTPPs) for the first time to our knowledge. Ratio of exergy loss rate to capital cost-exergy efficiency graph and correlation are presented. Monthly exergoeconomic results are also presented for the three turbines. Ratio of exergy loss rate to capital cost and ratio of energy loss rate to capital cost depending on the wind speed are studied. And also as meteorological variables temperature (density of air) and humidity effect on ratio of exergy loss rate to capital cost are discussed and the results are given by the table and graphs clearly. The paper describes an exergoeconomic evaluation of wind turbine power plant. The analysis of the field data demonstrates the proposed system is a viable option for wind turbine power plant (WTTP) installations. (C) 2012 Elsevier Ltd. All rights reserved.