Mathematical analysis of the influence of the chimney height and collector area on the performance of a roof top solar chimney

Al-Kayiem, Hussain H.; Sreejaya, K.V.; Gilani, Syed I.U.

doi:10.1016/j.enbuild.2013.09.021

Cited by 62 publications

(20 citation statements)

References 13 publications

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“…Bazı sistemlerde cam yüzey yerine fotovoltaik panel veya mat yüzey kullanılabilir [3]. Bu çalışmayla IPWSC sistem performansının bilindik güneş bacası sistemiyle kıyaslandığında havalandırma veriminin çok daha fazla olduğu kanıtlanmıştır [5].…”

Section: Güneş Bacasıunclassified

Güneş Bacası ve Toprak Hava Isı Değiştiricisi Hibrid Sisteminin Pasif Soğutma Amaçlı Kullanılması

Kalkan

2016

Bitlis Eren Üniversitesi Fen Bilimleri Dergisi

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ÖzetBu çalışmada, daha önce yapılan deneysel ve bilgisayar destekli çalışmalar göz önüne alınarak yeni bir Güneş bacası sistemi Elazığ iklim şartları için tasarlanmıştır. Bugüne kadar yapılan çalışmalarda bazı eksiklikler göze çarpmaktadır bunların giderilmesi için bilgisayar destekli analize ağırlık verilmiştir. Örneğin, mimari açıdan kullanılan materyaller Computational Fluid Dynamic (CFD) Fluent ortamında tekrar düzenlenerek yeniden incelenmiştir. Ayrıca, sistemin bilgisayar tabanlı analizi yapılarak ve deneysel verilerden elde edilen değerlerle kıyaslanarak verimin artırılması sağlanmıştır. Soğutma kapasitesinin artırılması adına birçok yöntem bulunmaktadır. Bu çalışmada ise Güneş bacası ve Toprak & Hava Isı Değiştiricisi aynı anda kullanılarak sistemin iki farklı koldan soğutulması sağlanmıştır. Çalışmamızın sonundaki amacımız, bilgisayar ortamında modelleyeceğimiz hibrit sistemin en verimli şekilde çalışmasını sağlayabilmek, soğutma kapasitesini artırabilmek ve günümüzde kullanılan binalara uygulanabilir hale getirmektir.Anahtar Kelimeler Güneş Bacası, Toprak Hava Isı Değiştiricisi, Pasif Soğutma Sistemleri. Passive Cooling Technology by Using Solar Chimney and Earth to Air Heat Exchanger Hybrid Systems AbstractThis study describes the design and analysis of a new solar chimney system for Elazığ climatic conditions. In order to improve the performance of solar chimney system, one of the computer-aided analysis systems is that Computational Fluid Dynamic (CFD) fluent is used to demonstrate the structures of these systems and finally compare the results with several examples, which have been studied experimentally and carried out previously. There are numerous methods to assist this cooling technique, and in the present study the use of solar chimney together with earth to air heat exchanger is introduced. The general purpose of the research is to understand how efficiently the hybrid system generates cooling, and is to improve the efficient of such systems for integration with existing and future domestic buildings.

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Section: Güneş Bacasıunclassified

Güneş Bacası ve Toprak Hava Isı Değiştiricisi Hibrid Sisteminin Pasif Soğutma Amaçlı Kullanılması

Kalkan

2016

Bitlis Eren Üniversitesi Fen Bilimleri Dergisi

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“…They found that for the solar chimney consisting of an inclined section on the roof and a vertical section near the south wall, the optimal ratio of length to width was 12:1. Al-Kayiem et al [12] developed a mathematical model which is able to predict the ventilation performance of a roof top solar chimney. They carried out the analysis on the velocity and mass flow rate in the roof top solar chimney at three different collector areas and three different heights.…”

Section: Introductionmentioning

confidence: 99%

“…Numerous investigations on the effect of the parameter of roof solar chimney have been carried out because the design and the parameter of a roof solar chimney are critical for the fluid flow and heat transfer in roof solar chimney [6][7][8][9][10][11][12][13] .Other studies have focused on the optimization of roof solar chimney and the studies of roof solar chimney combined other technologies [14][15][16][17][18][19][20][21][22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Enhancement of natural ventilation of a novel roof solar chimney with perforated absorber plate for building energy conservation

Lei

Zhang

Wang

et al. 2016

Applied Thermal Engineering

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“…The collector inlet opening, the collector outlet diameter, the divergence angles, the chimney inlet opening were changed, while the collector diameter and chimney height were fixed. Lebbi et al [174] Analyzing an inclined roof-top solar chimney was an interesting work which was done by AlKayiem et al [175] by studying the effects of the collector dimensions and chimney height on the system. Gholamalizadeh and Kim [176] studied the greenhouse effect on the natural convection heat transfer characteristics in solar chimney.…”

Section: Analytical and Simulation Studiesmentioning

confidence: 99%

A review on solar chimney systems

Kasaeian

Molana

Rahmani

et al. 2017

Renewable and Sustainable Energy Reviews

135

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The increased utilization of solar energy has gained the attention of researchers to develop the solar chimney (SC) technology in recent years. Many studies have been conducted in this aear both experimentally and theoretically, whereas experimental studies are mainly focused on small-scale systems. This work provides a comprehensive and updated review that include most of the experimental studies, analytical and simulation works, the solar chimney applications, hybrid systems and geographical case studies based on extended references, citation of the updated works and the specified way of looking at different sections. The technological gaps in differnet sections are identified and a summary of suggestions is given for the future work, including more experimental works on the large-scale systems, and CFD analyses for optimization between the geometrical parameters and the output power. More studies on new applications of solar chimney technology including hybrid systems are also recommended.

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Mathematical analysis of the influence of the chimney height and collector area on the performance of a roof top solar chimney

Cited by 62 publications

References 13 publications

Güneş Bacası ve Toprak Hava Isı Değiştiricisi Hibrid Sisteminin Pasif Soğutma Amaçlı Kullanılması

Güneş Bacası ve Toprak Hava Isı Değiştiricisi Hibrid Sisteminin Pasif Soğutma Amaçlı Kullanılması

Enhancement of natural ventilation of a novel roof solar chimney with perforated absorber plate for building energy conservation

A review on solar chimney systems

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