Temperature Performance Evaluation of Parabolic Dishes Covered with Different Materials in Iwo, Nigeria

Aweda, F. O.; Akinpelu, J.A.; Falaiye, Adeniran Oluwasesan

doi:10.4314/njbas.v24i1.14

Cited by 8 publications

(7 citation statements)

References 5 publications

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“…Though the reflector faces the sun, the cookware remains horizontal within the dish. The cross-section of the asymmetric reflector tilt angle between their axes may be as low as zero [28][29][30], Figure 3, Figures 4 and 5, demonstrate the characteristics of the sun's beam of light been reflected off a flat mirror. The incident ray hits the mirror at the incidence point, a line perpendicular to the mirror i.e.…”

Section: Pot Holdermentioning

confidence: 99%

Performance Evaluation of Locally Designed and Produced Parabolic Solar Cooker

Aliyu¹,

Nnodim²,

Adebayo³

et al. 2021

IJEES

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Despite being able to supply beyond energy required for global use, the sun is still being greatly under-utilized possibly due to the availability of alternative sources of energies which are finite, costly, and far more hazardous. The aim of this research work is to seek better ways of utilizing the luminous flux (luminous energy emitted per second) or power from solar radiation, which is renewable, pollution free and which is freely available to mankind to generate heat or power required for cooking and for related needs of a cooker. The solar cooker, which is a family size type was designed (with the design specification temperature of 180°C) which was constructed and tested between the periods of 9.00 am and 4.00 pm during sun shine days. The maximum temperature attained was 140°C. The parabolic solar cooker has four panel booster reflectors (with rectangular plane mirrors on each booster reflector) each of which is detachable and a mechanical device is provided to constantly tilt the reflectors in the azimuthally direction so as to track the sun. These reflectors reflect the sun rays which falls incident on it to a focal point which give solar energy of high intensity. A known size pot was positioned with aid of a potholder on the focal point. The use of the parabolic cooker will help tremendously in the conservation of fossil fuel energy. However, on the sunny and cloudless days, the cooker can work effectively for various cooking purposes at almost the same rate as the conventional stoves. The efficiency of the cooker was determined and recorded. Finally, the cooker could be more efficient if the entire reflector surfaces of the cooker can be able to radiate heat energy from all its surfaces to the focal point. The cooker could be used for cooking on sunny days and in areas where electricity availability is questionable in terms of supply.

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Section: Pot Holdermentioning

confidence: 99%

Performance Evaluation of Locally Designed and Produced Parabolic Solar Cooker

Aliyu¹,

Nnodim²,

Adebayo³

et al. 2021

IJEES

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“…Mohandes et al [3], Trajekovic et al [4], Reddy and Ranjan [5] have used artificial neural network (IA) technique to estimate the solar radiation. The more solar radiation, induces more evaporation of water molecules As reported by Aweda et al [6]. Aweda et al [7], demonstrated that seasonal effect on evaporation rate occurs as a result of the dry or wet temperature of the environment.…”

Section: Introductionmentioning

confidence: 98%

Modelling the Earth’s Solar Irradiance Across Some Selected Stations in Sub-Sahara Region of Africa

Aweda

Samson

2020

IJEE

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“…It may also be referred to as the aspects of the atmospheric state which is visible and experienced because of human [3]. At high temperatures, there will be more evaporation across any region [4]. The weather conditions of any given location are often described in terms of the meteorological elements which include the state of the sky, temperature, winds, pressure, precipitation, and humidity.…”

Section: Introductionmentioning

confidence: 99%

Seasonal variation of some atmospheric parameters in fresh water swamp and Sudan Savanna areas of Nigeria

Aweda¹,

Agbolade²,

Oyewole³

et al. 2021

Nig. J. Tech.

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The year in year out variation in atmospheric parameters, solar radiation, and meteorological variables such as ambient temperature, relative humidity RH, wind speed etc, are posies that can be and are used to describe the atmospheric conditions. Ten years of data obtained from the Nigerian Meteorological Agency (NiMet) was analysed. Results showed that solar radiation rises from January to get to its peak in April which is maintained till August before it begins to fall again with the Sudan savanna area (Maiduguri) having a value of (15.70 MJm-2month-1) and freshwater swamp area (Ikeja) having the value of (10.16 MJm-2month-1). The extraterrestrial radiations calculated for the two stations are 333.53 (MJm-2month-1) and 195.53 (MJm-2month-1) respectively. However, the relative humidity of Ikeja (84.54%) is higher as compared to that of Maiduguri (42.23%). The minimum temperature ranges observed for the two stations varies from (22 - 24)0C and (12 - 26)°C, while the maximum temperature was as high as 33°C and 40°C obtained in April for Ikeja and Maiduguri, respectively. Similarly, the average wind speed is higher for Ikeja (4.97m/s) than for Maiduguri (4.62m/s). The result of the statistical correlation reveals that, in Maiduguri, solar radiation was found to have a significant negative relationship with relative humidity (r = -.256, p<0.01) and a significant positive relationship with minimum and maximum temperature (p<0.05). This means that minimum and maximum temperatures increase as solar radiation increases (p<0.05). Relative humidity decreases as solar radiation increases. In Ikeja, solar radiation was found to have a significant negative relationship with relative humidity (r =-.350, p<0.01) and wind speed (r = -146, p<0.05) and significant positive relationship with minimum temperature (r =.410, p<0.05) and maximum temperature (r =.575, p<0.01). In conclusion, the variables like relative humidity, minimum temperature and wind speed are higher in the freshwater swamp area of Nigeria as compared to the Sudan savanna area, while the solar radiation, extraterrestrial radiation and maximum temperature are generally higher in the Sudan savanna area of Nigeria.

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Temperature Performance Evaluation of Parabolic Dishes Covered with Different Materials in Iwo, Nigeria

Cited by 8 publications

References 5 publications

Performance Evaluation of Locally Designed and Produced Parabolic Solar Cooker

Performance Evaluation of Locally Designed and Produced Parabolic Solar Cooker

Modelling the Earth’s Solar Irradiance Across Some Selected Stations in Sub-Sahara Region of Africa

Seasonal variation of some atmospheric parameters in fresh water swamp and Sudan Savanna areas of Nigeria

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