Article
Green & Sustainable Science & Technology
Diogo do Carmo Zidan, Cristiana Brasil Maia, Mohammad Reza Safaei
Summary: Numerical simulations were conducted to predict the performance of PTC systems operating with eight different nanofluid compositions. The model also estimated daily incident solar radiation, beneficial energy gain, overall efficiency, thermal losses, and system pressure drop.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Review
Green & Sustainable Science & Technology
Alibakhsh Kasaeian, Koosha Mirjavadi, Peyman Pourmoghadam, Faezeh Asgari Sima, Yasaman Amirhaeri, Sara Borhani, Leila Fereidooni
Summary: This paper provides a detailed review of the literature on parabolic trough collectors (PTC) combined with organic Rankine cycles (ORC). It examines various aspects such as modeling and simulation, optimization, exergy, economics, and experimental studies. The review also highlights the impact of different parameters on the performance of the proposed systems.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Green & Sustainable Science & Technology
Yousef N. Dabwan, Gang Pei, Trevor Hocksun Kwan, Bin Zhao
Summary: The study introduces a new hybrid solar preheating intercooled gas turbine (SP-IcGT), which outperforms the conventional hybrid solar preheating gas turbine (SP-GT) in terms of fuel-based efficiency and specific fuel consumption. By integrating solar energy with the intercooled gas turbine, fuel consumption and greenhouse gas emissions can be greatly reduced while achieving economic benefits.
Article
Multidisciplinary Sciences
Mohamed Mahran Kasem
Summary: This study presents a novel multi-objective optimization model for the design optimization of PTCs, with thermal and exergetic efficiencies being the primary performance indicators. The optimization model effectively maximizes both thermal and exergetic efficiencies, with water and helium achieving the highest optimal values, respectively.
SCIENTIFIC REPORTS
(2022)
Article
Energy & Fuels
Linrui Ma, Tong Zhang, Xuelin Zhang, Bin Wang, Shengwei Mei, Zhifeng Wang, Xiaodai Xue
Summary: In a commercial parabolic trough solar power plant, the performance is determined by the operation strategy of the solar field, and the paper solves the issue of operating with nonuniform and degraded collectors by establishing a model and developing an improved operation strategy.
Article
Mechanics
Abdullah Albaker, Nestor Cuba Carbajal, Manuel Octavio Fernandez Atho, Anderson Nunez Fernandez, Maria Del Carmen Delgado Laime, Ani Mary Borda Echavarria, Reza Alayi, Morteza Aladdin
Summary: The aim of this study is to numerically investigate the performance of a solar physical surface absorption cooling system using activated carbon/methanol as a working pair inside a parabolic-shaped solar collector. The mathematical model is based on the conservation equations and thermodynamics of the physical surface absorption process. The model is validated through comparisons with previous laboratory and numerical studies. The effects of various parameters on the system's performance are investigated, and the solar performance coefficient and specific cooling power are determined to be 0.12 and 45.6 W/kg, respectively, based on the experimental model and working conditions.
Article
Energy & Fuels
Somchart Chantasiriwan
Summary: This paper investigates an alternative method of solar-aided power generation using direct steam generating parabolic trough collectors for feed water heating in a small biomass power plant. The method aims to increase power output and electrical energy generation efficiency by raising the temperature of the heat transfer fluid through the use of parabolic trough collectors.
Article
Chemistry, Physical
Ayhan Atiz, Hatice Karakilcik, Mustafa Erden, Mehmet Karakilcik
Summary: The study investigates an integrated system for electricity and hydrogen production, with energy and exergy analyses. The system includes various solar collectors, flash turbine, organic Rankine cycles, reverse osmosis unit, water electrolysis unit, greenhouse, and medium temperature geothermal resource. By upgrading the fluid temperature from geothermal resources, clean water, hydrogen, and electrical energy are generated. The overall energy and exergy efficiencies of the system are found to be 10.43% and 9.35% respectively.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Engineering, Multidisciplinary
Zeinab Esmaeili, Sanaz Akbarzadeh, Saman Rashidi, Mohammad Sadegh Valipour
Summary: The simultaneous use of turbulators and nanofluids is an effective strategy for improving the thermal performance of parabolic solar collectors. A three-dimensional numerical simulation was used to investigate the effects of using a turbulator and adding hybrid nanoparticles on the heat transfer rate and entropy generation in a parabolic trough collector. The results showed that the use of conical helical gear rings as turbulators increased the heat transfer by 35.7% and decreased the total entropy generation by 32.8%.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2023)
Article
Green & Sustainable Science & Technology
Juan Camilo Lopez, Alejandro Escobar, Daniel Alejandro Cardenas, Alvaro Restrepo
Summary: This paper compares the exergy performances of two different types of solar thermal collectors in a sugarcane cogeneration power plant in Colombia. The introduction of solar thermal collectors can effectively reduce fuel consumption, with parabolic trough collector outperforming linear Fresnel collector in heat generation.
Article
Energy & Fuels
Santosh Kumar Singh, Arun Kumar Tiwari, H. K. Paliwal
Summary: This study aims to enhance the performance of parabolic trough collectors (PTCs) used in various industrial applications. By using synthetic aromatic fluids with hybrid nanoparticles, the thermal efficiency and heat transfer in PTC systems can be improved. The findings of the study reveal significant enhancements in thermal efficiency and heat transfer coefficient using the hybrid nanofluid compared to the base fluids.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2023)
Review
Thermodynamics
Tawfiq Chekifi, Moustafa Boukraa
Summary: This article presents a comprehensive review of the performance improvement research on parabolic trough collectors, with a focus on works using numerical methods. It outlines the possible further developments of these devices and identifies areas that need more attention and investigation.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Green & Sustainable Science & Technology
Natraj, K. S. Reddy
Summary: Solar parabolic trough collectors are a mature technology, but improvements in structural stability and accuracy of reflectors and receivers are necessary. This study investigates the combined effect of thermo-structural instability on collector performance. Results show a decrease in optical efficiency and significant loss due to bending and deflection in the reflector and receiver. This research will benefit the design and monitoring of trough collectors.
Article
Green & Sustainable Science & Technology
Hui Xiao, Peng Liu, Zhichun Liu, Wei Liu
Summary: This study proposed a research on achieving the uniformity of wall temperature in the parabolic trough collector through the longitudinal swirls impinging cooling method. The comparison of three different baffles revealed that the A1 type baffle demonstrated the best performance in terms of wall temperature uniformity and efficiency.
Article
Thermodynamics
Sara Sallam, Mohamed Taqi
Summary: Direct steam generation in parabolic trough solar collectors is a promising technology, but it requires adequate control to avoid deterioration risk. This study presents a detailed numerical model to analyze the operating conditions of the system. The results show that choosing appropriate mass flow rate and pressure can prevent stratification and regulating the flow rate according to solar radiation ensures high quality and duration of steam production.
APPLIED THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Angel Jimenez Alvaro, Ignacio Lopez Paniagua, Celina Gonzalez Fernandez, Javier Rodriguez Martin, Rafael Nieto Carlier
ENERGY CONVERSION AND MANAGEMENT
(2015)
Article
Physics, Multidisciplinary
Alvaro Urdiales Montesino, Angel Jimenez Alvaro, Javier Rodriguez Martin, Rafael Nieto Carlier
Article
Thermodynamics
Angel Jimenez Alvaro, Ignacio Lopez Paniagua, Celina Gonzalez Fernandez, Rafael Nieto Carlier, Javier Rodriguez Martin
Article
Economics
Marcos Escudero, Angel Jimenez, Celina Gonzalez, Ignacio Lopez
Article
Physics, Multidisciplinary
Ignacio Lopez Paniagua, Javier Rodriguez Martin, Celina Gonzalez Fernandez, Angel Jimenez Alvaro, Rafael Nieto Carlier
Article
Chemistry, Applied
Juan Guerrero, Ivan Gil, Juan J. Navlet, Ignacio Lopez-Paniagua, Alberto Abanades
PROPELLANTS EXPLOSIVES PYROTECHNICS
(2019)
Article
Energy & Fuels
Ignacio Lopez Paniagua, Angel Jimenez Alvaro, Javier Rodriguez Martin, Celina Gonzalez Fernandez, Rafael Nieto Carlier
Article
Physics, Multidisciplinary
Ignacio Lopez-Paniagua, Javier Rodriguez-Martin, Susana Sanchez-Orgaz, Juan Jose Roncal-Casano
Article
Physics, Multidisciplinary
Carlos Arnaiz-del-Pozo, Ignacio Lopez-Paniagua, Alberto Lopez-Grande, Celina Gonzalez-Fernandez