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An exergetic model for the ambient air temperature impacts on the combined power plants and its management using the genetic algorithm
, Article International Journal of Air-Conditioning and Refrigeration ; Volume 29, Issue 1 , 2021 ; 20101325 (ISSN) ; Norouzi, N ; Fani, M ; Sharif University of Technology
World Scientific
2021
Abstract
4E analysis is used on a Brayton-Rankine combined cycle power plant (CCPP) with a dual pressure heat recovery steam generation (HRSG) system. A multi-objective genetic-based evolutionary optimization has been used to estimate the most optimal exergy efficiency status, exergy cost reduction, carbon emission reduction, and NOx emission reduction. For the validation of the data, the simulation results are compared with the plant's data. This study investigates the effect of every decisive parameter on the objective performance parameters of the CCPP. The primary estimated results are the emission rates, efficiencies, and the exergoeconomic cost of the system. At the optimum operational state,...
An innovative implementation of Circular Hough Transform using eigenvalues of Covariance Matrix for detecting circles
, Article Proceedings Elmar - International Symposium Electronics in Marine, 14 September 2011 through 16 September 2011, Zadar ; 2011 , Pages 397-400 ; 13342630 (ISSN) ; 9789537044121 (ISBN) ; Mianroodi, J. R ; Norouzi, N ; Khajooeizadeh, A ; Sharif University of Technology
2011
Abstract
In this paper, a fast and accurate algorithm for identifying circular objects in images is proposed. The presented method is a robust, fast and optimized adaption of Circular Hough Transform (CHT), Eigenvalues of Covariance Matrix and K-means clustering techniques. Results are greatly improved by implementing iterative K-means clustering algorithm and establishing an exponential growth instead of updating values in the parameter space of CHT through summation, both in runtime and quality. In fact, using the Eigenvalues of Covariance Matrix as a validating method, a well balanced compromise between the speed and accuracy of results is achieved. This method is tested on several real world...
Exergy analysis and optimization of natural gas liquids recovery unit
, Article International Journal of Air-Conditioning and Refrigeration ; Volume 29, Issue 1 , 2021 ; 20101325 (ISSN) ; Norouzi, N ; Shiva, N ; Mahmoodi Folourdi, R ; Hashemi Bahremani, E ; Sharif University of Technology
World Scientific
2021
Abstract
The Natural Gas Liquids (NGL) recovery unit is one of the processes that requires cooling. The sweetened gas enters this unit after the dehydration stage, and the final product called NGL Product is stored and ready for consumption or export. In this research, the first, one of the NGL units, is simulated with HYSYS software. Three types of processes with different cooling systems are studied using the exergy analysis method. Joule-Thomson's combination with the expander is selected for its high exergy efficiency, and the exergy efficiency function has been selected as the objective function 1 to optimize this process mathematically based on this study's findings. The critical term in this...