Annual Report 2003-2004

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Power Generation Research CenterNRIIn BISOTOON power plant, consumption of BFWP, CWP and FDF comprises 90% oftotal cusumption of the unit. Therefore, any attempts to reduce the energy consumptionof induction motors conspicuously give rise to outstanding reduction of electricalenergy consumption of the unit. This idea led the researchers to propose two definitesuggestions including optimal tap setting of transformers in electrical auxiliary systemof power plant and feasibility study of utilizing reactive power compensators.This studies includes technical and economical befits of simple and advanced reactivepower compenstor such as TCR and TCS.Project Results : Deriving a precise model of electrical auxiliary system of BISOTOON powerplant Minimizing RI 2 loss in electrical auxiliary system of the plant Reducing the energy consumption of induction motors through optimal tap settingof transformers and consequently reduction of total energy consumption of the unit Feasibility study of reactive power compensation.Project Documentation:- Power Plant Electric Systems Department; Final <strong>Report</strong> of “Reduction of ElectricalEnergy Consumption in BISOTOON Steam Power Plant”; Power Generation ResearchCenter; NRI; Code: PECBR/T01.22
NRIPower Generation Research CenterProject Title :Enhanced Heat Exchanger DesignDepartment: Power Plant Mechanical Systems Project Manager: F. KhosraviEmployer: Niroo Research Plan, Tavanir Co. Project Code: PMEPT01Project Staff: G.R. Valizadeh, M. Tabesh, H. Taherian, M. Ghadiri,M. Soltani Hosseini, S. Arab MoghaddamSummary:The main objective of this project was the study of thermohydraulics performance ofenhanced heat exchanger. For this purpose, the various methods of heat transferaugmentation are studied and overall heat transfer coefficient of plain, corrugated andfinned tubes are determined. According to test results, suitable solutions arerecommended in order to improve the oil cooler performance of gas turbine in hotseasons.Test rig and enhanced tubesProject Results : The results of performance tests show that:1. In liquid phase, overall heat transfer coefficient of finned tubes is about54% higher than plain tubes and therefore they can improve the powerplant heat exchanger performance, considerably.2. Finned tubes and corrugated tubes increase pressure drop about 9.5% and7.1% compared with plain tubes, respectively. Replacing the tubes of Hitachi gas turbine oil cooler with enhanced tubes reduces2°C the outlet oil temperature. This modification can solve the production drop due tooil temperature increasing.23
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Annual Report 2003-2004

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