Principles of energy conversion and noise characterization in air ventilation ducts exposed to solar radiation

2019 ◽  
Vol 242 ◽  
pp. 1320-1345 ◽  
Author(s):  
Himanshu Dehra
Keyword(s):  
Solar Radiation ◽  
Energy Conversion ◽  
Ventilation Ducts ◽  
Air Ventilation ◽  
Noise Characterization

scholarly journals Decaffeination process characteristic of Robusta coffee in single column reactor using ethyl acetate solvent

2009 ◽  
Vol 26 (3) ◽  
Author(s):  
Sukrisno Widyotomo ◽  
Sri Mulato ◽  
Hadi K. Purwadaria ◽  
A.M Syarief
Keyword(s):  
Energy Efficiency ◽  
Solar Radiation ◽  
Solar Energy ◽  
Energy Conversion ◽  
Conversion Efficiency ◽  
Radiation Intensity ◽  
Energy Conversion Efficiency ◽  
Solar Radiation Intensity ◽  
Solar Energy Conversion Efficiency ◽  
Shading Plant

AbstractThis experiment aims to know the solar energy efficiency of four clones of cocoa that cultivated under three different shading plants. This experiment has been done from September until December 2013 located at Kaliwining Experiment Farm with characteristic 45 m above sea level, soil type is low humic gley, soil texture is silty clay loam, and climate classification type D based on Scmidht and Fergusson Classification. This experiment used Nested Design as Experimental Design with species of shading plant as main plot which are Teak (Tectona grandis L.), Krete (Cassia surattensis (Burm.) F.), Lamtoro (Leucaena leucocephala L.) and Cocoa clones as sub plot which are Sulawesi 1, Sulawesi 2, KKM 22, KW 165. The observation of solar energy efficiency consists of daily solar radiation intensity, solar radiation intensity above plant, solar radiation intensity under plant, and also plant total dry weight. The experimental result showed that there is differences (heterogenity) between shading location based on homogenity test by Bartlett Method. There are some interaction between the kind of shading plant and clones in parameter of interception efficiency, absorbtion efficiency, the efficiency of solar energy that caught by plant, and solar energy conversion efficiency. The efficiency of solar energy that caught by plant will affect the solar energy conversion efficiency with R2 = 0,86.  Keywords : Solar Energy Efficiency, Cocoa Clones, Shading Plant, Nested Design, Bartlett Method

scholarly journals The Estimate of Instantaneous Solar Radiation Intensity Using Energy Conversion Method

Natural-B ◽  
2018 ◽  
Vol 004 (03) ◽  
pp. 135-139
Author(s):  
Gancang Saroja ◽  
Lailatin Nuriyah ◽  
Chomsin S. Widodo ◽  
M. F. Novanata
Keyword(s):  
Solar Radiation ◽  
Energy Conversion ◽  
Radiation Intensity ◽  
Conversion Method ◽  
Solar Radiation Intensity

scholarly journals The Estimate of Instantaneous Solar Radiation Intensity Using Energy Conversion Method

Natural-B ◽  
2018 ◽  
Vol 004 (03) ◽  
pp. 135-139
Author(s):  
Gancang Saroja ◽  
Lailatin Nuriyah ◽  
Chomsin S. Widodo ◽  
M. F. Novanata
Keyword(s):  
Solar Radiation ◽  
Energy Conversion ◽  
Radiation Intensity ◽  
Conversion Method ◽  
Solar Radiation Intensity

Physics Considerations of Solar Energy Conversion

1984 ◽  
Vol 106 (1) ◽  
pp. 3-15 ◽  
Author(s):  
A. F. Haught
Keyword(s):  
Solar Radiation ◽  
Solar Energy ◽  
Energy Conversion ◽  
Conversion Efficiency ◽  
Radiant Energy ◽  
Solar Energy Conversion ◽  
Quantum Processes ◽  
Maximum Conversion ◽  
Energy Conversion Systems ◽  
Maximum Conversion Efficiency

A comparative analysis is presented of the conversion of radiant energy to useful work by thermal and quantum processes. The operation of thermal and quantum converters and the thermodynamic conversion efficiency of each are developed in terms of the mechanism of radiation-matter interaction in thermal and quantum systems. From the analysis the maximum conversion efficiency of a single-collector thermal converter with unconcentrated solar radiation and an ambient (reservoir) temperature of 300 K is 0.540; for the same conditions the maximum conversion efficiency of a single-collector quantum system is 0.309. The analysis is extended to consider the effects on the conversion efficiency of heat reject temperature, cascaded operation, in which the reject heat of the quantum converter is used as the input to a thermal bottoming cycle, and of concentration of the solar radiation. The results obtained represent the thermodynamic limits for radiant energy conversion by thermal and quantum processes, and calculations with solar input serve as a reference against which to judge the performance and capabilities of prospective solar energy conversion systems.

scholarly journals Artificial neural network and neuro fuzzy inference modelling of global solar radiation data using bayesian algorithm for design of solar energy conversion system

2018 ◽  
Vol 7 (2.21) ◽  
pp. 88
Author(s):  
S Shanmuga Priya ◽  
Lisa Maria Ubbenjans ◽  
I Thirunavukkarasu
Keyword(s):  
Solar Radiation ◽  
Solar Energy ◽  
Energy Conversion ◽  
Fuzzy Inference ◽  
Solar Energy Conversion ◽  
Global Solar Radiation ◽  
Weather Data ◽  
Applied Model ◽  
Energy Conversion Systems ◽  
Inference Systems

Measurement of global solar radiation is particularly required for proper design of solar energy conversion systems. This study investigates the use of software tools like neural networks and fuzzy inference systems for modelling so as to predict global solar radiation using different input parameters based on available weather data. Advantages include simplicity, speed and efficiency, to make short term predictions of global solar radiation at different locations in India, Germany and United Kingdom. It helps in estimation of effectiveness of the applied model which matches solar radiation and other meteorological parameters which are in a non-linear relationship. Bayesian Inference algorithm is used for the current study in estimation of global solar radiation.  

scholarly journals Level of Coffee Consumption in Urban Community and Its Determinant Factors: Case Study in Jember District

2009 ◽  
Vol 25 (3) ◽  
Author(s):  
Endang Wiji Lestari ◽  
Idha Haryanto ◽  
Surip Mawardi
Keyword(s):  
Energy Efficiency ◽  
Solar Radiation ◽  
Solar Energy ◽  
Energy Conversion ◽  
Conversion Efficiency ◽  
Radiation Intensity ◽  
Energy Conversion Efficiency ◽  
Solar Radiation Intensity ◽  
Solar Energy Conversion Efficiency ◽  
Shading Plant

AbstractThis experiment aims to know the solar energy efficiency of four clones of cocoa that cultivated under three different shading plants. This experiment has been done from September until December 2013 located at Kaliwining Experiment Farm with characteristic 45 m above sea level, soil type is low humic gley, soil texture is silty clay loam, and climate classification type D based on Scmidht and Fergusson Classification. This experiment used Nested Design as Experimental Design with species of shading plant as main plot which are Teak (Tectona grandis L.), Krete (Cassia surattensis (Burm.) F.), Lamtoro (Leucaena leucocephala L.) and Cocoa clones as sub plot which are Sulawesi 1, Sulawesi 2, KKM 22, KW 165. The observation of solar energy efficiency consists of daily solar radiation intensity, solar radiation intensity above plant, solar radiation intensity under plant, and also plant total dry weight. The experimental result showed that there is differences (heterogenity) between shading location based on homogenity test by Bartlett Method. There are some interaction between the kind of shading plant and clones in parameter of interception efficiency, absorbtion efficiency, the efficiency of solar energy that caught by plant, and solar energy conversion efficiency. The efficiency of solar energy that caught by plant will affect the solar energy conversion efficiency with R2 = 0,86.  Keywords : Solar Energy Efficiency, Cocoa Clones, Shading Plant, Nested Design, Bartlett Method

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