Solar thermal power plants for electricity production include, at least, two main systems: the solar field and the power block. Regarding this last one, the particular thermodynamic cycle layout and the working fluid
A closed loop system is proposed for the working fluid of the Solar Turbine project. An open loop system would just blow steam out into the atmosphere, which would be ideal for the performance of a heat engine (including a
A solar operated closed system power generator is provided in which a low boiling fluid is vaporized and superheated by the solar energy concentrated within a parabolic reflector upon...
Various organic fluids have been investigated with SOFC-GT systems. Exhaust temperature of SOFC-GT system (100–300 ℃) defines the selection of organic fluid in ORC system. Critical temperature of some organic fluid that lies in the range of 100–300 ℃ are R152a, R123, R601a, R1233zd(E), ammonia, octane, hexane, etc. The choice of organic fluid can
The analysis shows that the new power generation system has significantly higher solar energy conversion efficiency in comparison to the conventional water-based (steam) system. At the same time, the heat storage not only overcomes the intermittent nature of solar energy but also improves the overall system efficiency. The study further reveals that the high
Hypersonic vehicles as next-generation aircraft have broad applications, but existing technologies of onboard power generation are hardly applicable due to the change of engines. In this research, a catalytic steam reforming enhanced closed-Brayton-cycle power generation system based on is developed. This system combines the closed Brayton cycle
This paper proposes and analyzes a novel solar-based multi-generation system integrating seven sub-systems for combined power generation, desalination, hydrogen production, and cooling. The system encompasses parabolic trough solar collectors, a multi-effect distillation (MED) unit, a polymer electrolyte membrane (PEM) electrolyzer, a Kalina cycle, an organic
The range of potential applications for the indirectly heated, closed sCO 2 cycle is broad since it can be used in essentially any application that currently uses a Rankine cycle including nuclear, solar, thermal power, geothermal, waste heat and fossil fuel combustion. Semi-closed, directly fired, oxy-fuel Brayton cycles are well suited to natural gas or coal-derived
This work studies capacity configuration and logistics scheduling at the hourly level with the minimum power generation cost. The round-trip efficiency reaches 41.5%, and the levelized cost of electricity is 0.148 $/kWh. The wind-solar hybrid system improves the system efficiency and economy compared with separated wind or solar systems. Taking
In the present work, a novel combined cycle is proposed for power generation from solar power towers. The proposed system consists of a closed Brayton cycle, which uses helium as the working fluid, and two organic Rankine cycles which are employed to recover the waste heat of the Brayton cycle. The system is thermodynamically assessed from both
Space nuclear Closed Brayton Cycle (CBC) power generation system with Helium-xenon gas (He–Xe) as a work fluid has attracted much attention with the development of space technology. The appropriate thermophysical property model of He–Xe is the key to achieve high-precision simulation of CBC power generation system. The thermophysical
Results show that for the closed solar thermal Brayton cycle the maximum overall first law efficiency of the system can be increased of more than 5% by combining a simple Rankine cycle to recover the exhaust heat and a significant 20% increase in the second law efficicency. The system efficiency is related to the solar concentration ratio with an optimum
Supercritical carbon dioxide (S–CO 2) closed-Brayton-cycle (CBC) has been considered as one of the most promising thermodynamic cycles for power generation, but its
This paper proposes a novel solar-based polygeneration system for simultaneous power generation, desalination, hydrogen-production, and refrigeration. The
In 2022, Colakoglu and Durmayaz worked to investigate a new multiple energy generation system based on a solar tower with a triple combined power cycle. Under optimal
It can adapt to the variable operating conditions of solar power generation system and meet the design requirements. Solar energy is an inexhaustible source of clean energy. Meanwhile, supercritical carbon dioxide has excellent
Results showed power generation during both heating and cooling phases, with net power outputs of 0.39 and 0.31 W, respectively, at a heat flux of 5.5 kW/m 2. Cai et al.
Two primary approaches to electricity generation power cycles using sCO 2 as the working fluid have been investigated: indirectly heated, closed-loop sCO 2 cycle and semi
Thermal-power cycles operating with supercritical carbon dioxide (sCO2) could have a significant role in future power generation systems with applications including fossil fuel, nuclear power
Results show that for the closed solar thermal Brayton cycle the maximum overall first law efficiency of the system can be increased of more than 5% by combining a
Thanks to the above advantages, the S-CO 2 cycle presents promising and attracts a lot of attention. We investigated the research hotspots of the S-CO 2 power technology in terms of the database named Web of Science from 2012 to 2021. As Fig. 1 illustrates, the studies cover widely and have developed a systematic analysis from system level to
The paper examines rotatable solar systems, transparent PV arrays, and how a system that supports agriculture may be constructed utilizing these above said systems. The system not only demonstrates how photovoltaic is linked to a power system but also analyzes ring primary system problems. The need for agro-photovoltaic uses will rise in the
Capturing thermal energy is an essential element of optimizing efficiency in solar-based systems of energy, involving the capture and utilization of excess thermal energy generated during processes like solar thermal power generation (Zhu et al., 2024a), (Ni et al., 2022).One effective method for heat recovery is the use of an organic Rankine cycle (ORC),
Thus, an innovative idea on harnessing unnatural wind resources for electrical power generation is introduced by installing an exhaust air energy recovery system above an exhaust air system (cooling tower). The feasibility of implementing the proposed system is investigated by conducting a laboratory test on a scaled model of a cooling tower. An on-site testing was carried out as
During extremely-hot summer days, air conditioners consume more electricity in different residential, commercial, industrial, and administrative buildings leading to annual on-peak electricity load occurs in large-scale power systems (Oh et al., 2016).Meanwhile, despite access to huge seawater resources, water crisis facing tropical regions is increasing, especially in
The integrating of intermittent power sources, such as photovoltaic and wind power, necessitates the integration of dispatchable power sources to ensure the security and stability of the power system [4, 5]. Coal-fired units, despite being a primary source of power generation, experience a decline in energy efficiency during the scheduling process, potentially
Download Citation | On Dec 1, 2023, Kunlin Cheng and others published Novel thermoelectric generator enhanced supercritical carbon dioxide closed-Brayton-cycle power generation systems
9 In the last few years there has been considerable interest in closed-cycle gas turbine power 10 plant due to the important contribution it can make to meeting worldwide energy demands. 11 Closed-cycle gas turbine has the potential to
Closed-Brayton-cycle (CBC) is a potential scheme to provide high-power electricity for hypersonic vehicles, but finite cold source onboard limits its power level. A thermoelectric generator (TEG) combined with CBC is a
Another kind of magnetohydrodynamic power generation method, liquid metal MHD (LMMHD), which has higher electrical conductivity, higher system stability and a lower demand on heat source temperature against plasma MHD, is suitable for the power generation using the waste heat, solar energy , nuclear energy and wave energy . LMMHD
However, solar power generation systems are severely affected by geographical distribution, seasonal variations and day-night cycles. Therefore, efficient and adaptable turbine design is the key to realize supercritical carbon dioxide solar power generation technology. In this paper, the initial thermodynamic design of 10 MW S-CO2 three-stage axial turbine is completed by self
Hong et al. enhanced the efficiency of a motorcycle exhaust system by integrating a TEG. Their design ingeniously incorporated a heat exchanger on both the hot and cold sides of the TEG for optimal temperature management. In addition, several studies used cooling methods involving a heat pipe. Li et al. explored a novel cooling strategy for the
Biogas production and its derived hydrogen production technology have broad application prospects. In this paper, an integrated biogas power generation system with solid oxide fuel cells is proposed, which mainly consists of four units: a solar thermal energy storage unit, a biogas production and hydrogen generation unit, a SOFC-MGT unit, and a waste heat
The present research has analyzed the energy and exergy of a combined system of simultaneous power generation and cool-ing. To provide a comprehensive data sheet of this system, the system has been investigated in the temperature range of 300–800 °C, and 6 working uids, including air, carbon dioxide, nitrogen, argon, xenon, and helium, have been investigated. The parameters
In the present work, a novel combined cycle is proposed for power generation from solar power towers. The proposed system consists of a closed Brayton cycle, which uses helium as the working fluid, and two organic Rankine cycles which are employed to recover the waste heat of the Brayton cycle. The system is thermodynamically assessed from both
12 Closed-cycle gas turbine has the potential to serve as power conversion system for a wide 13 range of energy sources such as fossil, concentrated solar power, nuclear, biomass and waste 14 heat.
Solar-aided power generation (SAPG) is a promising way to achieve clean and efficient production of electricity. An efficient solar/lignite hybrid power generation system was proposed in the paper, in which solar energy was amplified in solar-driven heat pump cooperating with waste heat recovery and two-stage drying was applied for energy cascade utilization.
Closed-Brayton-cycle (CBC) power generation system is a potential high-power electricity generation scheme for hypersonic vehicles, but finite cold source onboard limits its power level. One of power enhancement approaches is building a combined closed-Brayton-cycle and thermoelectric generator (TEG) power generation system, aimed to extend the available
Gas turbine classification. In a closed cycle GT or closed Brayton cycle (CBC), the turbine exhausts are not thrown out but recirculated. The layout and Temperature–Entropy (T–S) diagram of a simple regenerative closed cycle GT is shown in Fig. 3 (b). The working fluid is compressed in the compressor from point 1 to 2.
It has been identified that substantial benefits can be achieved with the use of closed-cycle GT for power generation. The closed-cycle GT provides promising alternatives to the conventional PCSs for nuclear, solar, geothermal, fossil and waste heat for terrestrial, space and marine power generation applications.
The results show that the designed turbine output power is 10.37 MW and the total-total efficiency is 91.60%. It can operate efficiently and steadily in the range of output power from 16.2% to 155.9%. It can adapt to the variable operating conditions of solar power generation system and meet the design requirements. 1. Introduction
This research synthesizes the advantage of clean energy solar energy and the special physical properties of supercritical carbon dioxide, which provides a theoretical basis for the application of the S-CO2 turbine in the field of solar power generation. Solar energy is an inexhaustible source of clean energy.
A previous drawback of the closed-cycle GT has been the lack of suitable heat source since light water reactors (LWRs) could not meet the high temperature requirement necessary for the cycle to be competitive. Similarly, the closed cycle GT was not well suited for conventional fossil-fired heat sources, .
However almost all design of closed-cycle GT employs regeneration because the loss of efficiency in a non-regenerative cycle is prohibitive . Alternatively, a heat recovery steam generator (HRSG) can be place in the turbine exhaust instead of the recuperator for increased utilisation of the heat input.
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