Design Analysis of Hybrid Gas Turbine‒Fuel Cell Power Plant in Stationary and Marine Applications

Kwaśniewski, Tomasz; Piwowarski, Marian

doi:10.2478/pomr-2020-0032

Cited by 6 publications

(3 citation statements)

References 19 publications

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“…This technology has seen considerable improvements in terms of efficiency and applicability due to the use of generators based on rare-earth magnets [18,19]. Research on improvements to efficiency and durability and lower building costs of energy systems based on fuel cells [20,21] or PV cells [22,23] is underway. The construction of power plants and heat and power plants using organic Rankine cycles (ORCs) [24] is a separate direction for energy development.…”

Section: Introductionmentioning

confidence: 99%

Technical and Economic Analysis of the Supercritical Combined Gas-Steam Cycle

et al. 2021

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Combined cycle power plants are characterized by high efficiency, now exceeding 60%. The record-breaking power plant listed in the Guinness Book of World Records is the Nishi-Nagoya power plant commissioned in March 2018, located in Japan, and reaching the gross efficiency of 63.08%. Research and development centers, energy companies, and scientific institutions are taking various actions to increase this efficiency. Both the gas turbine and the steam turbine of the combined cycle are modified. The main objective of this paper is to improve the gas-steam cycle efficiency and to reach the efficiency that is higher than in the record-breaking Nishi-Nagoya power plant. To do so, a number of numerical calculations were performed for the cycle design similar to the one used in the NishiNagoya power plant. The paper assumes the use of the same gas turbines as in the reference power plant. The process of recovering heat from exhaust gases had to be organized so that the highest capacity and efficiency were achieved. The analyses focused on the selection of parameters and the modification of the cycle design in the steam part area in order to increase overall efficiency. As part of the calculations, the appropriate selection of the most favorable thermodynamic parameters of the steam at the inlet to the high-pressure (HP) part of the turbine (supercritical pressure) allowed the authors to obtain the efficiency and the capacity of 64.45% and about 1.214 GW respectively compared to the reference values of 63.08% and 1.19 GW. The authors believe that efficiency can be improved further. One of the methods to do so is to continue increasing the high-pressure steam temperature because it is the first part of the generator into which exhaust gases enter. The economic analysis revealed that the difference between the annual revenue from the sale of electricity and the annual fuel cost is considerably higher for power plants set to supercritical parameters, reaching approx. USD 14 million per annum. It is proposed that investments in adapting components of the steam part to supercritical parameters may be balanced out by a higher profit.

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Section: Introductionmentioning

confidence: 99%

Technical and Economic Analysis of the Supercritical Combined Gas-Steam Cycle

et al. 2021

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“…In view of the previous problems, this paper proposes a sliding control method of marine ecological protection robot based on dynamic positioning, firstly, using gyroscope and rangefinder as information sensor of marine ecological protection robot, collecting the position information of marine ecological protection robot, using dynamic information measurement method to measure the location information of marine ecological protection robot, extracting the position and pose tracking information of marine ecological protection robot, then tracking and identifying the dynamic positioning robot according to the environmental perception of marine ecological protection field, and the accelerated global positioning design of marine ecological protection robot combined with robot sliding control method [4]. Finally, the performance of this method in improving the positioning accuracy of marine ecological protection robot is demonstrated by simulation [5].…”

Section: Introductionmentioning

confidence: 99%

Sliding control method of marine ecological protection robot

Zhang

2021

THERM SCI

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In order to solve the problem of low control accuracy of the marine ecological protection robot in the route planning process during positioning, a new sliding control method is proposed. First, obtain the position information of the marine ecological protection robot, use the dynamic information measurement method to process the dynamic information, and extract the position tracking information. According to the needs of dynamic positioning and target path tracking, combined with the robot sliding control method, the global positioning of the marine ecological protection robot is designed. Experiments show that this method has high positioning accuracy for marine ecological protection robots, small positioning errors, good obstacle avoidance performance and strong dynamic positioning control capabilities.

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“…This technology has greatly improved its efficiency thanks to the use of electric generators with rare earth magnets [6][7][8]. On the other hand, efforts are being made to improve the efficiency, durability and cost reduction of the energy systems based on fuel cells [9][10][11] or photovoltaic cells [12,13].…”

Section: Introductionmentioning

confidence: 99%

Design Analysis of Micro Gas Turbines in Closed Cycles

Kosowski

Piwowarski

2020

Energies

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The problems faced by designers of micro-turbines are connected with a very small volume flow rate of working media which leads to small blade heights and a high rotor speed. In the case of gas turbines this limitation can be overcome by the application of a closed cycle with very low pressure at the compressor inlet (lower than atmospheric pressure). In this way we may apply a micro gas turbine unit of accepted efficiency to work in a similar range of temperatures and the same pressure ratios, but in the range of smaller pressure values and smaller mass flow rate. Thus, we can obtain a gas turbine of a very small output but of the efficiency typical of gas turbines with a much higher power. In this paper, the results of the thermodynamic calculations of the turbine cycles are discussed and the designed gas turbine flow parts are presented. Suggestions of the design solutions of micro gas turbines for different values of power output are proposed. This new approach to gas turbine arrangement makes it possible to build a gas turbine unit of a very small output and a high efficiency. The calculations of cycle and gas turbine design were performed for different cycle parameters and different working media (air, nitrogen, hydrogen, helium, xenon and carbon dioxide).

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Design Analysis of Hybrid Gas Turbine‒Fuel Cell Power Plant in Stationary and Marine Applications

Cited by 6 publications

References 19 publications

Technical and Economic Analysis of the Supercritical Combined Gas-Steam Cycle

Technical and Economic Analysis of the Supercritical Combined Gas-Steam Cycle

Sliding control method of marine ecological protection robot

Design Analysis of Micro Gas Turbines in Closed Cycles

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