Experimental analysis of solar air collector with PCM-honeycomb combination under the natural convection

2019 ◽  
Vol 195 ◽  
pp. 299-308 ◽  
Author(s):  
Mesut Abuşka ◽  
Seyfi Şevik ◽  
Arif Kayapunar
Keyword(s):  
Natural Convection ◽  
Experimental Analysis ◽  
Solar Air Collector

Experimental Analysis of the Pool Boiling Phenomenon of Sugarcane Juice

2015 ◽  
Vol 789-790 ◽  
pp. 489-495 ◽  
Author(s):  
Daniel Marcelo ◽  
Paul Villar Yacila ◽  
Raúl La Madrid Olivares
Keyword(s):  
Heat Transfer ◽  
Natural Convection ◽  
Experimental Analysis ◽  
Electrical Power ◽  
Power Input ◽  
Sugarcane Juice ◽  
Middle Level ◽  
Transfer Coefficients ◽  
Combustion Gases ◽  
Heat Transfer Coefficients

In Peru, jaggery making process has low energy efficiency and it is due to low heat transfer coefficients for natural convection linked to the sugar cane movement generated by the heat exchange between the sugarcane juice and the combustion gases. This low heat transfer coefficients are caused by improper heat exchangers designs. In this work, is performed an experimental analysis that consist in supplie heat to a pot containing sugarcane juice using a hot plate of constant electrical power. This study consist in identify boiling regimes and estimate the heat transfer coefficients linked to natural convection boiling, measuring: (i) the temperature at the bottom of the pot (ii) the temperature at the bottom level of sugarcane juice (iii) the temperature at middle level of sugarcane juice (iv) the temperature at free surface of sugarcane juice (v) rate of water evaporated. The method of linear regression and the correlation of Rohsenow were used for obtaining the values of the heat transfer coefficients ranging from 4088.6 W/m2°C to 12592.8 W/m2°C with power input ranging from 700W to 1300W.

EXPERIMENTAL ANALYSIS OF THE INFLUENCE OF HEAT SINK GEOMETRIC PARAMETERS ON NATURAL CONVECTION

2015 ◽  
Author(s):  
Vilson Altair da Silva ◽  
Bruno de Campos Salles Anselmo ◽  
Ana Lúcia Fernandes de Lima E Silva ◽  
Sandro Metrevelle Marcondes Lima E Silva
Keyword(s):  
Natural Convection ◽  
Experimental Analysis ◽  
Heat Sink ◽  
Geometric Parameters

Numerical and Experimental Analysis of Mixed Forced and Natural Convection about a Sphere

1988 ◽  
Vol 31 (1) ◽  
pp. 0293-0299 ◽  
Author(s):  
Arthur T. Johnson ◽  
G. Douglas Kirk ◽  
Soung H. Moon ◽  
Tien-Mo Shih
Keyword(s):  
Natural Convection ◽  
Experimental Analysis

Experimental analysis of natural convection in vertical annuli filled with AlN and TiO2/mineral oil-based nanofluids

2017 ◽  
Vol 111 ◽  
pp. 138-145 ◽  
Author(s):  
Natalia L. Cadena-de la Peña ◽  
Carlos I. Rivera-Solorio ◽  
Luis A. Payán-Rodríguez ◽  
Alejandro J. García-Cuéllar ◽  
José L. López-Salinas
Keyword(s):  
Natural Convection ◽  
Experimental Analysis ◽  
Mineral Oil ◽  
Vertical Annuli
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