Experimental study of heat transfer coefficient with rectangular baffle fin of solar air heater

Chabane, Foued; Hatraf, N.; Moummi, Noureddine

doi:10.1007/s11708-014-0321-y

Cited by 28 publications

(12 citation statements)

References 36 publications

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“…https://www.indjst.org/ 3.4.7 Similarly, the Prandtl number (21) is calculated by the following eq (3.24),…”

Section: The Reynolds Number Is Calculated By the Following Eq(323)mentioning

confidence: 99%

Heat transfer characteristics of nocturnal cooling system for clear sky climate of Western Maharashtra, India

Mulik¹

2020

IJST

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Objectives: To investigate heat transfer characteristics of nocturnal cooling system in the Indian climate with suitable material for radiator and proper coating to enhance the heat transfer. Methodology: A nighttime radiative cooling system with aluminum radiator in a dry area, is assessed both experimentally and theoretically. A theoretical model has been proposed to evaluate the radiative cooling potential for the dry type climate of Western Maharashtra, India. However, the end result can be improved by a nighttime cooling system based on nocturnal longwave radiation, which cools the air below ambient temperature. Findings: The experimental room temperature could be maintained at about 2-4.5 • C less than the outer room temperature. It is found that there is a huge scope in reducing the energy requirements for cooling purposes. Average radiative cooling rate of 55.84-71.88 W/m2 is achieved for without coating and 72.30-80.99 W/m2 for coating on the radiator. Novelty: In this study, we have designed and assessed the radiative cooling system which has a possibility of reducing the power using up for space cooling purposes. For achieving the building healthier and more comfortable, the building design is a key factor for saving energy and reducing emissions by considering nocturnal cooling design principles with suitable design and materials. The design of energy-efficient and sustainable buildings is important for the future.

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“…https://www.indjst.org/ 3.4.7 Similarly, the Prandtl number (21) is calculated by the following eq (3.24),…”

Section: The Reynolds Number Is Calculated By the Following Eq(323)mentioning

confidence: 99%

Heat transfer characteristics of nocturnal cooling system for clear sky climate of Western Maharashtra, India

Mulik¹

2020

IJST

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“…There is a great diversity of designs and modes of operation: forced convection, Ahmad et al, [4], Indirect forced convection, Bahlou et al, [5], Direct cabinet and indirect cabinet solar dryers, Banoult et al, [6], Solarbiomass hybrid dryer enhanced by the Co-Gen technique, Tadahmun and Hussai, [7]; Leon and Kumar, [8], Greenhouse solar dryers, Abdullah, [9]; Bechoff et al, [10], Direct solar dryer, Hii et al, [11], Heat pumps, Fadhel et al, [12]; Li et al, [13], Indirect natural convection solar dryer with chimney, solar dryer with greenhouse as collector, solar tunnel dryer (air collector), hybrid solar dryer assisted by evacuated tube collectors, Jairaj et al, [14]. F. Chabane & al [15][16][17][18][19][20][21][22][23][24][25][26], Presents a study of heat transfer in a solar air heater by using new design of solar collector. The collector efficiency in a single pass of solar air heater without, and with using fins attached under the absorbing plate has been investigated experimentally the maximum efficiency obtained for the 0.012 and 0.016 kg/s with, and without fins were 40.02, 51.50% and 34.92, 43.94%.…”

Section: Introductionmentioning

confidence: 99%

Solar drying of drying agricultural product (Apricot)

Chabane¹,

Bensahal²,

Brima³

et al. 2019

MMEP

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This work allowed us to study the effects of some parameters on drying and specify the most influential. Drying is basically a phenomenon of removal of liquid by evaporation from an apricot. Solar drying is one of the processes that have found application in Algeria, because of the important quantities of solar irradiations that can be exploited in this country.Drying basically comprises of two fundamental and simultaneous processes: heat is transferred to evaporate liquid, and mass is transferred as a liquid or vapor within and the apricot as a vapor from the surface. The experimental study is investigated in the Biskra city of Algeria for drying Apricot in the drying room which it integrated with a solar air collector (new design) which the drying chamber receives the temperature from the solar collector which absorbed from sun. We have to spread the produce on a suitable surface and let it dry in the drying room and added the study of thermal performance of solar air collector and trying with three different airflow rates, namely, 0.018, 0.028 and 0.034 kg/s are conducted. Finally the results have been illustrated with mass water content, product temperature, drying room temperature, outlet temperature in both solar collector and drying room and enthalpy of solar collector and drying room which effect with increase the mass flow rate.

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“…There is a great diversity of designs and modes of operation: forced convection, Ahmad et al, [4], Indirect forced convection, Bahlou et al, [5], Direct cabinet and indirect cabinet solar dryers, Banoult et al, [6], Solarbiomass hybrid dryer enhanced by the Co-Gen technique, Tadahmun and Hussai, [7]; Leon and Kumar, [8], Greenhouse solar dryers, Abdullah, [9]; Bechoff et al, [10], Direct solar dryer, Hii et al, [11], Heat pumps, Fadhel et al, [12]; Li et al, [13], Indirect natural convection solar dryer with chimney, solar dryer with greenhouse as collector, solar tunnel dryer (air collector), hybrid solar dryer assisted by evacuated tube collectors, Jairaj et al, [14]. F. Chabane et al [15][16][17][18][19][20][21][22][23][24][25][26], Presents a study of heat transfer in a solar air heater by using new design of solar collector. The collector efficiency in a single pass of solar air heater without, and with using fins attached under the absorbing plate has been investigated experimentally the maximum efficiency obtained for the 0.012 and 0.016 kg/s with, and without fins were 40.02, 51.50 % and 34.92, 43.94 %.…”

Section: Introductionmentioning

confidence: 99%

Mathematical Modeling of Drying of Mint in a Forced Convective Dryer Based on Important Parameters

Chabane¹,

Adouane²,

Moummi³

et al. 2019

IJHT

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Thin layer drying of mint was evaluated using a solar dryer at the university of Biskra. The experimental moisture ratios of the samples were fitted to eight drying models. The drying experiments were carried out on the mint with effect the mass flow rate, which varies from 0.018 to 0.034 kg.s -1 . In this part of the study, we cut the mint to virtual median little pieces. The mathematical models were tested with the drying behavior of mint in the laboratory solar dryer. The coefficients of the models were determined by the multiple regression method in the solar dryer to find out the most suitable moisture ratio model. We conclude that the mass flow rate influence onto the coefficients of correlation it's meaning the mass flow it is an important factor. The our model was found as the best model based on statistical parameters of R², RMSE and χ². The model is applicable to predict the moisture content of mint during solar drying of mint.

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Experimental study of heat transfer coefficient with rectangular baffle fin of solar air heater

Cited by 28 publications

References 36 publications

Heat transfer characteristics of nocturnal cooling system for clear sky climate of Western Maharashtra, India

Heat transfer characteristics of nocturnal cooling system for clear sky climate of Western Maharashtra, India

Solar drying of drying agricultural product (Apricot)

Mathematical Modeling of Drying of Mint in a Forced Convective Dryer Based on Important Parameters

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