Determination of optimum tilt angles for solar collectors in low-latitude tropical region
TLDR
In this article, a set of data recorded from a pryanometer located on latitude 6.45° north of the equator was used to generate average monthly radiation over the latitudes.Abstract:
This work optimises the collection of solar energy within the period of its availability in order to increase its utilisation and also to enhance performance of heating systems that depend on it through appropriate determination of optimum solar collector tilt angles. Buoyancy-induced flow equation in solar collector pipe was established by continuity, energy and Navier–Stokes equations in cylindrical coordinates. Fundamental solar radiation equations were programmed to determine optimum tilt angles in locations within latitudes 1° and 14°. A set of data recorded from a pryanometer located on latitude 6.45° north of the equator was used to generate average monthly radiation over the latitudes. Graphs obtained from latitude 6° and 13° data were analysed to investigate solar radiation on some tilt angles. The optimum tilt angles for solar heating for periodic tracking of the sun in the region within latitudes 1° and 14° were predicted as ∅ + 25° for November, December and January; ∅ + 15° for February, September and October; ∅ − 15° for August; ∅ − 25° for May, June and July; and ∅ for March and April. The results of this work confirmed that solar radiation on tilted surface increases with latitude.read more
Citations
More filters
Journal ArticleDOI
A review on recent developments in thermal performance enhancement methods of flat plate solar air collector
TL;DR: In this article, the authors provide an insight into the recent critical findings on the thermal performance enhancement of the flat plate solar air collector to stimulate further developments towards the betterment of sustainable development.
Journal ArticleDOI
Increasing household solar energy penetration through load partitioning based on quality of life: The case study of Nigeria
TL;DR: In this paper, the authors proposed the installation of solar energy system using energy partitioning approach based on scalable level of importance to quality of life, where household energy utilization is partitioned into different energy sectors, and then the importance of each sector as it affects the basic quality-of-life of the intending users are determined using structured questionnaire.
Journal ArticleDOI
Integration of evaporative cooling technique with solar chimney to improve indoor thermal environment in the New Assiut City, Egypt
Amr Sayed Hassan Abdallah,Amr Sayed Hassan Abdallah,Hiroshi Yoshino,Tomonobu Goto,Napoleon Enteria,Magdy Mohamed Radwan,M. Abdelsamei Eid +6 more
TL;DR: In this article, the authors developed an integration of direct evaporative cooling tower with a solar chimney multi-zone thermal ventilation model to achieve a decrease in indoor temperatures that reach 10°C to 11.5°C compared to outdoor temperatures.
Journal ArticleDOI
Optimal electricity development by increasing solar resources in diesel-based micro grid of island society in Thailand
TL;DR: In this article, the authors used net present cost (NPC) to evaluate the optimum PV/diesel system configurations for installation in isolated island in Thailand, and the results of analyses show that the optimal case PV and diesel system can decrease COE from $ 0.429/kWh to $0.374/kW when compared to the existing diesel-based system and can decrease emissions both carbon dioxide of 796.61 tons/yr and other gases of 21.47 tons/r.
Journal ArticleDOI
Assessment of solar radiation on diversely oriented surfaces and optimum tilts for solar absorbers in Malaysian tropical latitude
TL;DR: In this paper, the solar radiation on diversely oriented surfaces and optimum tilts for solar absorbers were assessed using MATLAB-based environment to compute the monthly solar radiation values.
References
More filters
Book
Solar engineering of thermal processes
TL;DR: In this article, the authors present an active and passive building heating system for solar thermal power systems, where the active system is designed by f--chart and the passive one by Utilizability Methods.
Book
Convective Heat and Mass Transfer
W. M. Kays,J. H. Whitelaw +1 more
TL;DR: In this article, the echangeurs de : chaleur, couche de : limite, modeles de : turbulence, transfert de masse reference record created on 2005-11-18, modified on 2016-08-08
Journal ArticleDOI
Optimization of tilt angle for solar panel: Case study for Madinah, Saudi Arabia
TL;DR: In this paper, the optimal tilt angle for the solar panel in order to collect the maximum solar irradiation was analyzed and the authors found that the loss in the amount of collected energy when using the yearly average fixed angle is around 8% compared with the monthly optimum tilt βopt.
Journal ArticleDOI
Determination of the optimum tilt angle of solar collectors for building applications
Huseyin Gunerhan,Arif Hepbasli +1 more
TL;DR: In this article, the optimum tilt angle of a solar collector for building applications is calculated by searching for the values for which the total radiation on the collector surface is a maximum for a particular day or a specific period.