M. Nourpour

Bio: M. Nourpour is an academic researcher from University of Qom. The author has contributed to research in topics: Combined cycle & Organic Rankine cycle. The author has an hindex of 1, co-authored 2 publications receiving 3 citations.

Modeling and 6E analysis of a novel quadruple combined cycle with turbocompressor gas station

Abstract: Natural gas compressor stations have a significant potential for waste heat recovery. In this paper, a novel quadruple combined cycle has been proposed based on a turbocompressor gas station. In this regard, Serajeh gas station in Qom (Iran), including three 25 MW nominal gas turbines that each turbine provided power requirement for compressor, has been considered. Steam and organic Rankine cycles have been used to recover waste heat and generate more power, which uses exhaust gas turbines. Seven organic fluids have been examined. Energy, Exergy, Exergoeconomic, Exergoenvironment, Emergoeconomic, and Emergoenvironmental (6E) analyses have better understood the system from different perspectives. In this regard, computer code has been developed in MATLAB for 6E analysis. Verification of thermodynamic simulation of developed code has been compared with THERMOFLEX software and reference data with high accuracy. Also, sensitivity analysis was carried out based on main parameters. Advanced exergy-based analysis associated with endogenous/exogenous and avoidable/unavoidable parts has been performed for deep analysis of each component. The results show an increase of approximately 16% in the integrated cycle's thermal efficiency compared to gas turbines. The combustion chamber has the highest exergy destruction rate, and the LP superheater and economizer have the lowest exergy efficiency. R113 was selected as the best organic fluid from thermodynamic and R141b from an economic and environmental point of view. Cost rates and environmental impacts of the entire system will be approximately 3300 $ h−1 and 2038 pts h−1, respectively.

Evaluation of a Novel Quadruple Combined Cycle With the Magnetohydrodynamic Generator Based on 6E Analysis

Abstract: The generation of the electric power through magnetohydrodynamic (MHD) is one of the most advanced high-temperature energy conversions as it directly turns the heat into electricity. In this study, a quadruple cycle with a MHD generator was considered as the upstream cycle, a Brayton cycle was taken as the middle cycle through heating, and an organic Rankine cycle and steam cycle were regarded as the downstream cycles using the heat loss of the MHD generator and gas turbine, respectively. Energy, exergy, exergoeconomic, exergoenvironmental, emergoeconomic, and emergoenvironmental (6E) analyses were done in the proposed system simultaneously for the first time. In addition, advanced exergy, exergoeconomic, and exergoenvironmental analyses were performed for the proposed system to show the effect of irreversibility accurately and deeply. Despite the slight difference between the results of the emergoeconomic and emergoenvironmental sector with the exergoeconomic and exergoenvironmental sector, the obtained qualitative results were very similar showing that the emergoeconomic and emergoenvironmental analyses can be proper alternatives to the conventional exergoeconomic and exergoenvironmental analyses. The temperature of the heat source is one of the most important criteria for fluid selection in the organic Rankine cycles. Five organic fluids were selected and evaluated according to the desired hot source temperature for the Rankine organic cycle (262 °C). The results showed that the R141b with energy and efficiency of 15.25 and 58.05%, respectively, had the best thermodynamic and exergy performance with the least amount of total costs using this fluid.

Modeling and 6E analysis of a novel quadruple combined cycle with turbocompressor gas station

Abstract: Natural gas compressor stations have a significant potential for waste heat recovery. In this paper, a novel quadruple combined cycle has been proposed based on a turbocompressor gas station. In this regard, Serajeh gas station in Qom (Iran), including three 25 MW nominal gas turbines that each turbine provided power requirement for compressor, has been considered. Steam and organic Rankine cycles have been used to recover waste heat and generate more power, which uses exhaust gas turbines. Seven organic fluids have been examined. Energy, Exergy, Exergoeconomic, Exergoenvironment, Emergoeconomic, and Emergoenvironmental (6E) analyses have better understood the system from different perspectives. In this regard, computer code has been developed in MATLAB for 6E analysis. Verification of thermodynamic simulation of developed code has been compared with THERMOFLEX software and reference data with high accuracy. Also, sensitivity analysis was carried out based on main parameters. Advanced exergy-based analysis associated with endogenous/exogenous and avoidable/unavoidable parts has been performed for deep analysis of each component. The results show an increase of approximately 16% in the integrated cycle's thermal efficiency compared to gas turbines. The combustion chamber has the highest exergy destruction rate, and the LP superheater and economizer have the lowest exergy efficiency. R113 was selected as the best organic fluid from thermodynamic and R141b from an economic and environmental point of view. Cost rates and environmental impacts of the entire system will be approximately 3300 $ h−1 and 2038 pts h−1, respectively.