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Journal articles on the topic 'Solar chimneys'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Harte, Reinhard, Martin Graffmann, and Wilfried B. Krätzig. "Optimization of Solar Updraft Chimneys by Nonlinear Response Analysis." Applied Mechanics and Materials 283 (January 2013): 25–34. http://dx.doi.org/10.4028/www.scientific.net/amm.283.25.

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Solar updraft chimneys (SUCs) form as engines of solar updraft power plants tower-like shell structures of extreme height with rather thin shell walls, similar to high chimneys comprising multiple flue gas ducts. The height of pre-designed SUCs presently reaches up to 1000 m. Thus they are exposed chiefly to extreme wind-loads and thermal actions from the internal flow of warm air. As first design attempt, the structural analysis of solar chimneys generally is carried out by linear elastic models. For optimization, the typical shell-like wind stresses have to be constraint towards a more beam-like response behavior, approaching as far as possible linear stresses over the entire chimney circumference. This requires rather strong ring stiffeners, either as spoke-wheels in the designs of sbp (Schlaich Bergermann and Partners) or as external stiffeners in the designs of K&P (Krätzig and Partners). Both alternatives require considerable construction efforts leading to high investment costs. There exists an interesting simplification of this stiffening, namely applying to the SUC shell relatively soft external rings, and admitting large-widths cracking in the limit state of failure. This cracking constraints and equalizes the meridional stresses over the chimney’s cross-section, saving large amounts of reinforcement steel in the SUC. The design requires materially nonlinear analyses to verify the internal forces under crack-formations. The manuscript will derive this concept and demonstrate the crack analysis by example of a 750 m high solar chimney.

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2

Zhang, Haihua, Yao Tao, and Long Shi. "Solar Chimney Applications in Buildings." Encyclopedia 1, no. 2 (May 27, 2021): 409–22. http://dx.doi.org/10.3390/encyclopedia1020034.

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A solar chimney is a renewable energy system used to enhance the natural ventilation in a building based on solar and wind energy. It is one of the most representative solar-assisted passive ventilation systems attached to the building envelope. It performs exceptionally in enhancing natural ventilation and improving thermal comfort under certain climate conditions. The ventilation enhancement of solar chimneys has been widely studied numerically and experimentally. The assessment of solar chimney systems based on buoyancy ventilation relies heavily on the natural environment, experimental environment, and performance prediction methods, bringing great difficulties to quantitative analysis and parameterization research. With the increase in volume and complexity of modern building structures, current studies of solar chimneys have not yet obtained a unified design strategy and corresponding guidance. Meanwhile, combining a solar chimney with other passive ventilation systems has attracted much attention. The solar chimney-based integrated passive-assisted ventilation systems prolong the service life of an independent system and strengthen the ventilation ability for indoor cooling and heating. However, the progress is still slow regarding expanded applications and related research of solar chimneys in large volume and multi-layer buildings, and contradictory conclusions appear due to the inherent complexity of the system.

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3

Ekechukwu, O. V., and B. Norton. "Design and Measured Performance of a Solar Chimney for Natural Circulation Solar Energy Dryers." Journal of Solar Energy Engineering 118, no. 1 (February 1, 1996): 69–71. http://dx.doi.org/10.1115/1.2847956.

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An experimental solar chimney consisted of a cylindrical polyethylene-clad vertical chamber supported by steel framework and draped internally with a selectively absorbing surface. The performance of the chimney which was monitored extensively is reported. Issues related to the design and construction of solar chimneys for natural circulation solar energy dryers are discussed.

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4

von Backstro¨m, Theodor W., Andreas Bernhardt, and Anthony J. Gannon. "Pressure Drop in Solar Power Plant Chimneys." Journal of Solar Energy Engineering 125, no. 2 (May 1, 2003): 165–69. http://dx.doi.org/10.1115/1.1564077.

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The paper investigates flow through a representative tall solar chimney with internal bracing wheels. It presents experimental data measured in a 0.63-m-dia model chimney with and without seven bracing wheels. The bracing wheels each had a rim protruding into the chimney and 12 spokes, each spoke consisting of a pair of rectangular section bars. The investigation determined coefficients of wall friction, bracing wheel loss, and exit kinetic energy in a model chimney, for both ideal non-swirling uniform flow and for swirling distorted flow. A fan at one end of the chimney model either sucked or blew the flow through it. The flow entering the chimney through the fan and its diffuser simulated the flow leaving the turbine at the bottom of the chimney. The swirling distorted flow increased the total pressure drop by about 28%, representing 4.7% of the turbine pressure drop. The pressure drop across the bracing wheels exceeded the frictional pressure drop by far. Designers of tall, thin-walled chimneys should take care to minimize the number of bracing wheels, reduce their rim width as much as possible, and investigate the feasibility of streamlining their spoke sections. If at all structurally possible, the top bracing wheel should be far enough from the chimney exit to allow the spoke wakes to decay and the separated flow to re-attach to the chimney wall downstream of the rims before the flow leaves the chimney, to reduce the exit kinetic energy loss.

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5

von Backstro¨m, Theodor W., and Anthony J. Gannon. "Compressible Flow Through Solar Power Plant Chimneys." Journal of Solar Energy Engineering 122, no. 3 (July 1, 2000): 138–45. http://dx.doi.org/10.1115/1.1313528.

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Chimneys as tall as 1500 m may be important components of proposed solar chimney power plants. The exit air density will then be appreciably lower than the inlet density. The paper presents a one-dimensional compressible flow approach for the calculation of all the thermodynamic variables as dependent on chimney height, wall friction, additional losses, internal drag and area change. The method gives reasonable answers even over a single 1500 m step length used for illustration, but better accuracy is possible with multiple steps. It is also applicable to the rest of the plant where heat transfer and shaft work may be present. It turns out that the pressure drop associated with the vertical acceleration of the air is about three times the pressure drop associated with wall friction. But flaring the chimney by 14 percent to keep the through-flow Mach number constant virtually eliminates the vertical acceleration pressure drop. [S0199-6231(00)03003-3]

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6

Papaefthimiou, V. D., C. O. Katsanos, M. G. Vrachopoulos, A. E. Filios, M. K. Koukou, and F. G. Layrenti. "Experimental measurements and theoretical predictions of flowfield and temperature distribution inside a wall solar chimney." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 221, no. 1 (January 1, 2007): 33–41. http://dx.doi.org/10.1243/0954406jmes308.

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The behaviour of solar chimneys in their general form has been studied and certified both theoretically and experimentally. The wall solar chimney concept, however, has been studied only theoretically and has not been certified at a laboratory level. To meet this objective, experimental and theoretical work is being carried out so as to obtain a clear understanding of the system's operation. A small-scale test room has been designed and constructed at the campus of the Technological Educational Institution of Halkida located in the agricultural area of Psachna in Greece. Wall solar chimneys have been constructed and put at each wall and orientation so as to be used to evaluate and measure their thermal behaviour and to certify their efficiency in satisfying the requirements for heating and air conditioning in buildings. A mathematical model has been developed that faces the problem as a natural convection one between two vertical parallel plates. First results have been compared with experimental measurements and show that the model predicts with sufficient accuracy the flowfield and temperature distribution measurements inside the solar chimney for the current configuration.

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7

Zhang, Xing Qiang, Xing Fei Yuan, and Li Min Li. "Structural System and Conceptual Model Test of Solar Chimney." Advanced Materials Research 168-170 (December 2010): 1601–10. http://dx.doi.org/10.4028/www.scientific.net/amr.168-170.1601.

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The solar chimney power station is a renewable energy system consisting of solar collector, wind turbine, and chimney. To improve the efficiency of energy generation, the higher chimney is the better. Considering the difference between the solar chimney and the traditional high-rise structure, the study on the chimney from the structural point of view is produced in this paper. The existing and planed chimneys are first introduced. Then the solar chimney is classified according to material, structural system, and constraint condition. Followed that, application of prestress technology including adoption of prestressed concrete, introduction of circumferential prestress, arrangement of stayed cable or cable net, and utilization of tensegrity system in the solar chimney is involved, which can improve the structural behavior of the chimney significantly. On this basis, conceptual models of three different structural systems are designed, and the performance of the models is tested under the horizontal force to show the effect of stayed cable and spokewise cable.

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8

von Backstro¨m, Theodor W. "Calculation of Pressure and Density in Solar Power Plant Chimneys." Journal of Solar Energy Engineering 125, no. 1 (January 27, 2003): 127–29. http://dx.doi.org/10.1115/1.1530198.

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This technical brief develops calculation methods for the pressure drop in very tall chimneys, as in solar chimney power plants. The methods allow for density and flow area change with height, for wall friction and internal bracing drag. It presents equations for the vertical pressure and density distributions in terms of Mach number. One of these is a generalization of the adiabatic pressure lapse ratio equation to include flow at small Mach numbers. The other is analogous to the hydrostatic relationship between pressure, density, and height, but extends it to small Mach numbers. Its integration leads to an accurate value of the average density in the chimney.

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9

Jittabut, Pongsak. "A Mathematical Model for Determination of Electric Energy Performance of Small Solar Chimney System in Nakhon Ratchasima Province, Thailand." Applied Mechanics and Materials 804 (October 2015): 341–44. http://dx.doi.org/10.4028/www.scientific.net/amm.804.341.

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A solar chimney power plant is a simple solar thermal power plant that is capable of converting solar energy to thermal energy in the solar collectors. Then, the generated thermal energy is converted to kinetic energy in the chimney and ultimately to electric energy via a wind turbine and a generator. The purpose of this study is to evaluate the performance of the solar chimney power plant in Nakhon Ratchasima, Thailand in terms of estimateion for the electric energy output. A mathematical model based on the energy balance was developed to estimate the power output of solar chimneys as well as to examine the effect of various ambient conditions and structural dimensions on the power generation. It was found that, the wind speed inside chimney reaches more than 2 times of the value of free wind speed outside the chimney. The solar chimney power plant with 10 m chimney height and 4 m chimney diameter is capable of yearly producing between 1,779-3,647 W and the performance of solar chimney in the range of 9-18% respectively. The highest performance of solar chimney (18%) was appeared in April. It can save the use of conventional sources of energy like oil and natural gas.

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10

Djordjevic, Vladan, and Aleksandar Cocic. "Compressible flow through solar chimneys with variable cross section - an exact solution." Theoretical and Applied Mechanics 44, no. 2 (2017): 215–28. http://dx.doi.org/10.2298/tam170815014d.

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Buoyancy driven, adiabatic and compressible flow in relatively high solar chimneys is treated in the paper analytically by using one-dimensional model of flow. General equations written suitably in a non-dimensional form are used for a qualitative discussion pertaining to the mutual effects of gravity, viscosity and varying cross section of the chimney. It is shown that in case of low Mach number flow these equations possess exact solutions obtainable by ordinary mathematical methods for any given chimney shape. Also shown, and demonstrated on an example, is the procedure of evaluation of the chimney shape that satisfies a condition imposed beforehand upon the flow. For better insight into the role of various parameters the solutions are presented in the form of power series expansions.

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11

Afonso, Clito, and Armando Oliveira. "Solar chimneys: simulation and experiment." Energy and Buildings 32, no. 1 (June 2000): 71–79. http://dx.doi.org/10.1016/s0378-7788(99)00038-9.

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12

Jawad, Ahmad, Mohd Suffian Misaran, Md Mizanur Rahman, and Mohd Azlan Ismail. "Experimental Investigation on The Effect of Divergent Tower Solar Chimney on The Theoretical Power Potential." Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 81, no. 1 (March 22, 2021): 140–49. http://dx.doi.org/10.37934/arfmts.81.1.140149.

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Solar chimney power plant is a sustainable alternative for electricity generation using solar as the source of energy. In general, the main body of a solar chimney plant requires a tall structure which is costly and challenging to construct. Thus, it is important to increase the performance of the solar chimney power plant and have a better energy-cost ratio. This study aims to experimentally investigate the influence of divergent solar chimney as opposed to a cylindrical chimney on solar chimney performance. Three divergent scaled-down solar chimney model at 1-meter, 1.5-meter and 2-meter were fabricated and tested for its performance at various simulated heat loads. The test results were compared with similar heights cylindrical solar chimney. The experiments show that divergent solar chimney increases the theoretical power generation potential and improves the stalk effect and have higher outlet velocity compared to a cylindrical solar chimney. The power potential of the divergent chimney is increased up to 18 times with the maximum theoretical power obtain at 0.183W on the 2-meter divergent chimney. Higher temperature was recorded on the 2-meter divergent chimney outlet at 341.3k compared to 330.4k on the cylindrical chimney indicates better stack effect. The highest average velocities in the divergent and cylindrical chimneys were recorded under the electric heat load of 2 kW at 0.994 m/s and 0.820 m/s respectively in the 1-meter configuration. It is also observed that the air velocity in a shorter divergent chimney is higher than taller divergent chimney models while better compared to all cylindrical height. This study finds that a shorter divergent solar chimney produces greater energy compared to a higher cylindrical solar chimney. Therefore, it is possible to reduce the overall cost of solar chimney by reducing the height of the main structure without sacrificing the performance of the solar chimney.

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13

Hamood, Bashaar Abdulkareem, and Mohammed ABDUL RAOUF NIMA. "Experimental Investigation of Thermal Performance of a Solar Chimney Provided with a Porous Absorber Plate." Journal of Engineering 26, no. 4 (March 23, 2020): 1–20. http://dx.doi.org/10.31026/j.eng.2020.04.01.

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Experimental investigation of the influence of inserting the metal foam to the solar chimney to induce natural ventilation are described and analyzed in this work. To carry out the experimental test, two identical solar chimneys (without insertion of metal foam and with insertion of metal foam) are designed and placed facing south with dimensions of length× width× air gap (2 m× 1 m× 0.2 m). Four incline angles are tested (20o,30o,45o,60o) for each chimney in Baghdad climate condition (33.3o latitude, 44.4o longitude) on October, November, December 2018. The solar chimney performance is investigated by experimentally recording absorber plate and air temperatures and velocity of air. Results indicated that the using metal foam absorber plate lead to reducing the mean temperature of absorber plate by 6.7 °C as a result, the values of chimney outlet air temperature increased. The daily solar chimney efficiency enhanced by 58.7% and the useful energy received also increased. The existence of metal foam caused higher air velocity at the exit and increasing in the ventilation rate that the maximum ventilate rate obtained from the solar chimney is 5.96 1/hr for 27 m3 volume of room at solar irradiance of 730 W/m2 for chimney incline angle of 60o. The results of the experimental work show that the addition of metal foam to the solar chimney as an absorber plate is an efficient method to enhance the characteristics of heat transfer and the thermal performance of the solar chimney in the weather condition of Iraq.

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14

Ganguli, Arijit, Sagar Deshpande, and Aniruddha Pandit. "CFD Simulations for Performance Enhancement of a Solar Chimney Power Plant (SCPP) and Techno-Economic Feasibility for a 5 MW SCPP in an Indian Context." Energies 14, no. 11 (June 7, 2021): 3342. http://dx.doi.org/10.3390/en14113342.

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The use of solar energy for power generation using the innovative solar chimney concept has been explored by many researchers mostly with the help of analytical models as well as CFD simulations while experimental studies for a pilot and bench scale facilities have been carried out. The efficiencies of these chimneys, however, are less than 1% (~0.07% for 50 kW pilot plant similar to Manzanares plant in Spain). In the present study, an effort has been made to make modifications in the chimney design to improve the efficiency of the chimney in terms of power generation. CFD simulations have been carried out for this modified design and the efficiency is seen to improve to 0.12% for a 50 kW chimney. Furthermore, a techno-economic feasibility analysis has been carried out for a conventional 5 MW solar power plant which can be installed on the western part of India, which receives good solar irradiation throughout the year. Two cases with and without government subsidies have been considered. It is observed that a high rate of return (~20.4%) is obtained for a selling price of electricity of Rs 5 per kWh with government subsidy, while a rate of return of ~19% is obtained for Rs 10 per kWh without government subsidy.

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15

Hu, Siyang, Dennis Y. C. Leung, and Michael Z. Q. Chen. "Effect of Divergent Chimneys on the Performance of a Solar Chimney Power Plant." Energy Procedia 105 (May 2017): 7–13. http://dx.doi.org/10.1016/j.egypro.2017.03.273.

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16

Madhlopa, Amos. "Effect of controlling airflow in a solar chimney on thermal load in a built environment." Journal of Engineering, Design and Technology 14, no. 2 (May 3, 2016): 286–309. http://dx.doi.org/10.1108/jedt-04-2014-0023.

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Purpose The purpose of this paper is to investigate a wall-integrated solar chimney for passive ventilation of a building cavity. Ventilation is required to improve the circulation of air in the built environment. This can be achieved through natural or forced convection. Natural circulation can be driven by renewable energy, and so it promotes sustainable exploitation of energy resources. Solar energy is one of the promising renewable energy resources. Design/methodology/approach The chimney was designed to face the Equator on the wall of a room which required ventilation. Mean monthly daily heating and cooling loads of the room were computed with and without a solar chimney by using hourly meteorological data from nine different weather sites at low, medium and high latitudes. The chimney was implemented with and without airflow control, and simulated by using the ESP-r software. Findings Results show that the solar chimney with airflow control marginally reduced the heating load in the building envelope, with a similar effect being exhibited by the chimney with uncontrolled airflow. The cooling load was reduced by the controlled airflow at all the nine sites. In contrast, the uncontrolled airflow increased the cooling load at some sites. In addition, the chimney with airflow control reduced the annual total thermal load at all the sites, while the chimney with uncontrolled airflow raised the total thermal load at some locations. Originality/value The performance of solar chimneys designed with and without airflow control systems has been investigated under the same prevailing meteorological conditions at a given site. Findings show that controlling airflow in a solar chimney reduces the total thermal load in the built environment. This information can be applied in different parts of the world.

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17

dos S. Bernardes, M. A., A. Voß, and G. Weinrebe. "Thermal and technical analyses of solar chimneys." Solar Energy 75, no. 6 (December 2003): 511–24. http://dx.doi.org/10.1016/j.solener.2003.09.012.

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18

Zuo, Lu, Yuan Zheng, Zhenjie Li, and Yujun Sha. "Solar chimneys integrated with sea water desalination." Desalination 276, no. 1-3 (August 2011): 207–13. http://dx.doi.org/10.1016/j.desal.2011.03.052.

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19

Naraghi, Mohammad H., and Sylvain Blanchard. "Twenty-four hour simulation of solar chimneys." Energy and Buildings 94 (May 2015): 218–26. http://dx.doi.org/10.1016/j.enbuild.2015.03.001.

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20

Cuce, Erdem, and Pinar Mert Cuceb. "Performance Assessment of Solar Chimneys: Part I – Impact of Chimney Height on Power Output." Energy Research Journal 10, no. 1 (January 1, 2019): 11–19. http://dx.doi.org/10.3844/erjsp.2019.11.19.

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21

Hu, Siyang, and Dennis Y. C. Leung. "Mathematical Modelling of the Performance of a Solar Chimney Power Plant with Divergent Chimneys." Energy Procedia 110 (March 2017): 440–45. http://dx.doi.org/10.1016/j.egypro.2017.03.166.

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22

Mehdipour, Ramin, Zahra Baniamerian, Sajad Golzardi, and S. M. Sohel Murshed. "Geometry modification of solar collector to improve performance of solar chimneys." Renewable Energy 162 (December 2020): 160–70. http://dx.doi.org/10.1016/j.renene.2020.07.151.

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23

Tan, Alex, and Nyuk Wong. "Parameterization Studies of Solar Chimneys in the Tropics." Energies 6, no. 1 (January 7, 2013): 145–63. http://dx.doi.org/10.3390/en6010145.

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24

Zhou, Xinping, Theodor W. von Backström, and Marco Aurélio dos Santos Bernardes. "Introduction to the Special Issue on Solar Chimneys." Solar Energy 98 (December 2013): 1. http://dx.doi.org/10.1016/j.solener.2013.10.029.

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25

Bansal, N. K., Jyotirmay Mathur, Sanjay Mathur, and Meenakshi Jain. "Modeling of window-sized solar chimneys for ventilation." Building and Environment 40, no. 10 (October 2005): 1302–8. http://dx.doi.org/10.1016/j.buildenv.2004.10.011.

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26

Padki, M. M., and S. A. Sherif. "On a simple analytical model for solar chimneys." International Journal of Energy Research 23, no. 4 (March 25, 1999): 345–49. http://dx.doi.org/10.1002/(sici)1099-114x(19990325)23:4<345::aid-er485>3.0.co;2-z.

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27

Liu, Yang, Tingzhen Ming, Chong Peng, Yongjia Wu, Wei Li, Renaud de Richter, and Nan Zhou. "Mitigating air pollution strategies based on solar chimneys." Solar Energy 218 (April 2021): 11–27. http://dx.doi.org/10.1016/j.solener.2021.02.021.

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28

Dimoudi, A. "Solar Chimneys in Buildings—The State of the Art." Advances in Building Energy Research 3, no. 1 (January 2009): 21–44. http://dx.doi.org/10.3763/aber.2009.0302.

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29

Weng, Feng-Tsai, and Shien-Ming Jenq. "The Study on Increasing Air Quality by Solar Chimneys." Advanced Science Letters 19, no. 8 (August 1, 2013): 2424–26. http://dx.doi.org/10.1166/asl.2013.4882.

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30

Saifi, Nadia, Noureddine Settou, Boubekeur Dokkar, Belkhir Negrou, and Nasreddine Chennouf. "Experimental Study And Simulation Of Airflow In Solar Chimneys." Energy Procedia 18 (2012): 1289–98. http://dx.doi.org/10.1016/j.egypro.2012.05.146.

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31

Mirhosseini, M., A. Rezania, and L. Rosendahl. "View Factor of Solar Chimneys by Monte Carlo Method." Energy Procedia 142 (December 2017): 513–18. http://dx.doi.org/10.1016/j.egypro.2017.12.080.

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32

Mabdeh, Shouib, Tamer Al Radaideh, and Montaser Hiyari. "ENHANCING THERMAL COMFORT OF RESIDENTIAL BUILDINGS THROUGH DUAL FUNCTIONAL PASSIVE SYSTEM (SOLAR-WALL)." Journal of Green Building 16, no. 1 (January 1, 2021): 139–61. http://dx.doi.org/10.3992/jgb.16.1.139.

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ABSTRACT Thermal comfort has a great effect on occupants’ productivity and general well-being. Since people spend 80–90% of their time indoors, developing the tools and methods that help in enhancing the thermal comfort for buildings are worth investigating. Previous studies have proved that using passive systems like Trombe walls and solar chimneys significantly enhanced thermal comfort in inside spaces despite that each system has a specific purpose within a specific climate condition. Hence, the main purpose of this study is to design and configure a new dual functional passive system, called a solar wall. The new system combines the Trombe wall and solar chimney, and it can cool or heat based on building needs. Simulation software, DesignBuilder, has been used to configure the Solar Wall and study its impact on indoor operative temperature for the base case. Using the new system, the simulation results were compared with those obtained in the base case and analyzed to determine the most efficient system design parameters and implementation method. The case that gave the best results for solar wall configuration was triple glazed glass and 0.1 cm copper as an absorber (case 11). The results show that using four units (case D) achieves longer thermal comfort levels: 15 to 24 thermal hours during winter (compared to five hours maximum) and 10 to 19 comfort hours in summer (compared to zero).

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33

Mabdeh, Shouib, Tamer Al Radaideh, and Montaser Hiyari. "ENHANCING THERMAL COMFORT OF RESIDENTIAL BUILDINGS THROUGH A DUAL FUNCTIONAL PASSIVE SYSTEM (SOLAR-WALL)." Journal of Green Building 16, no. 3 (June 1, 2021): 155–77. http://dx.doi.org/10.3992/jgb.16.3.155.

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ABSTRACT Thermal comfort has a great impact on occupants’ productivity and general well-being. Since people spend 80–90% of their time indoors, developing the tools and methods that enhance the thermal comfort for building are worth investigating. Previous studies have proved that using passive systems like Trombe walls and solar chimneys significantly enhanced thermal comfort in inside spaces despite that each system has a specific purpose within a specific climate condition. Hence, the main purpose of this study is to design and configure a new, dual functional passive system, called a solar wall. The new system combines the Trombe wall and solar chimney, and it can cool or heat based on building needs. Simulation software, DesignBuilder, has been used to configure the Solar Wall, and study its impact on indoor operative temperature for the base case. Using the new system, the simulation results were compared with those obtained in the base case and analyzed to determine the most efficient system design parameters and implementation method. The case that gave the best results for solar wall configuration was triple glazed glass and 0.1 cm copper as an absorber (case 11). The results show that using four units (case D) achieves longer thermal comfort levels: 15 to 24 thermal hours during winter (compared to five hours maximum) and 10 to 19 comfort hours in summer (compared to zero).

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34

Kasayapanand, Nat. "Enhanced heat transfer in inclined solar chimneys by electrohydrodynamic technique." Renewable Energy 33, no. 3 (March 2008): 444–53. http://dx.doi.org/10.1016/j.renene.2007.03.014.

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35

Zhai, X. Q., Z. P. Song, and R. Z. Wang. "A review for the applications of solar chimneys in buildings." Renewable and Sustainable Energy Reviews 15, no. 8 (October 2011): 3757–67. http://dx.doi.org/10.1016/j.rser.2011.07.013.

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36

Maia, Cristiana B., Felipe V. M. Silva, Vinícius L. C. Oliveira, and Lawrence L. Kazmerski. "An overview of the use of solar chimneys for desalination." Solar Energy 183 (May 2019): 83–95. http://dx.doi.org/10.1016/j.solener.2019.03.007.

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37

Hoseini, Hamideh, and Ramin Mehdipour. "Performance evaluation of hybrid solar chimneys for fresh water production." Environmental Progress & Sustainable Energy 39, no. 1 (June 12, 2019): 13276. http://dx.doi.org/10.1002/ep.13276.

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38

Hirunlabh, Jongjit, Puttirat Piamwongjit, Teekasap Sombat, and Joseph Khedari. "Effect of Screening Solar Chimneys on Induced Air Flow Rate." International Journal of Ventilation 2, no. 2 (September 2003): 159–68. http://dx.doi.org/10.1080/14733315.2003.11683662.

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39

Suárez-López, María José, Ana María Blanco-Marigorta, Antonio José Gutiérrez-Trashorras, Jorge Pistono-Favero, and Eduardo Blanco-Marigorta. "Numerical simulation and exergetic analysis of building ventilation solar chimneys." Energy Conversion and Management 96 (May 2015): 1–11. http://dx.doi.org/10.1016/j.enconman.2015.02.049.

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40

Zrikem, Z., and E. Bilgen. "Ventilation of dwellings using solar chimneys in North African climate." Solar & Wind Technology 4, no. 3 (January 1987): 313–17. http://dx.doi.org/10.1016/0741-983x(87)90062-2.

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41

Hu, Siyang, Dennis Y. C. Leung, and John C. Y. Chan. "Impact of the geometry of divergent chimneys on the power output of a solar chimney power plant." Energy 120 (February 2017): 1–11. http://dx.doi.org/10.1016/j.energy.2016.12.098.

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42

Strobel, Christian Scapulatempo, Luís Mauro Moura, and Márcio Fontana Catapan. "Technical feasibility analysis of the use of solar chimneys in Brazil." Revista Brasileira de Planejamento e Desenvolvimento 9, no. 3 (August 13, 2020): 450. http://dx.doi.org/10.3895/rbpd.v9n3.12636.

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MIYAZAKI, Takahiko, Atsushi AKISAWA, and Takao KASHIWAGI. "A computational fluid dynamics analysis of solar chimneys integrated with photovoltaics." Proceedings of the Symposium on Environmental Engineering 2004.14 (2004): 380–83. http://dx.doi.org/10.1299/jsmeenv.2004.14.380.

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44

Al-Azawiey, Sundus S., Hussain H. Al-Kayiem, and Suhaimi B. Hassan. "On the Influence of Collector Size on the Solar Chimneys Performance." MATEC Web of Conferences 131 (2017): 02011. http://dx.doi.org/10.1051/matecconf/201713102011.

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45

Omara, Adil A. M., Hussein A. Mohammed, Ihab Jabbar Al Rikabi, Mohamed Ali Abuelnour, and Abuelnuor A. A. Abuelnuor. "Performance improvement of solar chimneys using phase change materials: A review." Solar Energy 228 (November 2021): 68–88. http://dx.doi.org/10.1016/j.solener.2021.09.037.

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46

Harte, Reinhard, Markus Tschersich, Rüdiger Höffer, and Tarek Mekhail. "DESIGN AND CONSTRUCTION OF A PROTOTYPE SOLAR UPDRAFT CHIMNEY IN ASWAN/EGYPT." Acta Polytechnica 57, no. 3 (June 30, 2017): 167–81. http://dx.doi.org/10.14311/ap.2017.57.0167.

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Abstract:

This work is part of a joint project funded by the Science and Technology Development Fund (STDF) of the Arab republic of Egypt and the Federal Ministry of Education and Research (BMBF) of the Federal Republic of Germany. Continuation of the use of fossil fuels in electricity production systems causes many problems such as: global warming, other environmental concerns, the depletion of fossil fuels reserves and continuing rise in the price of fuels. One of the most promising paths to solve the energy crisis is utilizing the renewable energy resources. In Egypt, high insolation and more than 90 percent available desert lands are two main factors that encourage the full development of solar power plants for thermal and electrical energy production. With an average temperature of about 40 °C for more than half of the year and average annual sunshine of about 3200 hours, which is close to the theoretical maximum annual sunshine hours, Aswan is one of the hottest and sunniest cities in the world. This climatic condition makes the city an ideal place for implementing solar energy harvesting projects from solar updraft tower. Therefore, a Solar Chimney Power Plant (SCPP) is being installed at Aswan City. The chimney height is 20.0 m, its diameter is 1.0m and the collector is a four-sided pyramid, which has a side length of 28.5 m. A mathematical model is used to predict its performance. The model shows that the plant can produce a maximum theoretical power of 2 kW. Moreover, a CFD code is used to analyse the temperature and velocity distribution inside the collector, turbine and chimney at different operating conditions. Static calculations, including dead weight and wind forces on the solar updraft chimney and its solar collector, have been performed for the prototype. Mechanical loading and ambient impact on highly used industrial structures such as chimneys and masts cause lifetime-related deteriorations. Structural degradations occur not only from rare extreme loading events, but often as a result of the ensemble of load effects during the life-time of the structure. A Structural Health Monitoring (SHM), framework for continuous monitoring, is implemented on the solar tower. For the ongoing case study, the types of impacts, the development of the strategic sensor positioning concept, examples of the initially obtained results and further prospects are discussed. Additional wind tunnel tests have been performed to investigate the flow situation underneath the solar collector and inside the transition section. The flow situation in and around the SCPP has been simulated by a combination of the wind tunnel flow and a second flow inside the solar tower. Different wind tunnel velocities and volume flow rates have been measured respectively. Particle Image Velocimetry (PIV) measurements give some indication of the flow situation on the in- and outside of the solar tower and underneath the collector roof. Numerical simulations have been performed with the ANSYS Fluent to validate the experimental tests.

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Burek, S. A. M., and A. Habeb. "Air flow and thermal efficiency characteristics in solar chimneys and Trombe Walls." Energy and Buildings 39, no. 2 (February 2007): 128–35. http://dx.doi.org/10.1016/j.enbuild.2006.04.015.

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Hassanein, Soubhi A., and Waleed A. Abdel-Fadeel. "IMPROVEMENT OF NATURAL VENTILATION IN BUILDING USING MULTI SOLAR CHIMNEYS AT DIFFERENT DIRECTIONS." JES. Journal of Engineering Sciences 40, no. 6 (November 1, 2012): 1661–77. http://dx.doi.org/10.21608/jesaun.2012.114607.

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Pavlou, K., K. Vasilakopoulou, and M. Santamouris. "The Impact of Several Construction Elements on the Thermal Performance of Solar Chimneys." International Journal of Ventilation 8, no. 3 (December 2009): 277–85. http://dx.doi.org/10.1080/14733315.2009.11683852.

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Zuo, Lu, Yue Yuan, Zhenjie Li, and Yuan Zheng. "Experimental research on solar chimneys integrated with seawater desalination under practical weather condition." Desalination 298 (July 2012): 22–33. http://dx.doi.org/10.1016/j.desal.2012.05.001.

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