study on thermal efficiency enhancement in solar tunnel
12th International Conference on Heat Transfer Fluid
Study of the Deformation of Compressor Blades During Rotating Stall Study of Winglets Vortex Generators in A Circular Tube for Thermal Enhancement Study on Aerodynamic Performance in Turbomachines Based on Fluid-Structure Coupling Method Study on the Surface Changes of Heat-Treated Aspen Wood Due to Aging by Different Techniques
Yupeng Wu
4 3D Engineering of Dye-sensitized solar cells: The aim of this project is to increase efficiency of Dye-Sensitized solar cells (DSCs) via 3D engineering design and analysis DSCs currently use a nanoporous TiO2 film sensitised to visible light by the adsorption of a suitable dye molecule which then undergoes charge transfer to the oxide By engineering the hierarchical structure of this TiO2
Analytical and Comparative Study for Solar Thermal Cooling
Analytical and Comparative Study for Solar Thermal Cooling and Photovoltaic Solar Cooling in the MENA Region By Younis Yousef Abidrabbu Badran A Thesis Submitted to the Faculty of Engineering at Cairo University and Faculty of Electrical Engineering and Computer Science at Kassel University in Partial Fulfillment of the Requirements for the Degree of Master of Science in Renewable Energy and
The Physics of Semiconductor Devices
Effect of Water on Cooling Efficiency of Activated Carbon Based Thermal Cooling Layer Beneath the Solar Cell to Boost Their Working Efficiency Pages 481-487 Kumar Vivek (et al ) Preview Buy Chapter 25 95 € Efficiency Enhancement of Polycrystalline Silicon Solar Cell Due to Integration of Ag Nanoparticles Fabricated by Rapid Thermal Annealing Pages 489-495 Barman Bidyut (et al
Efficiency enhancement in organic solar cells with
Efficiency enhancement in organic solar cells with ferroelectric polymers Yongbo Yuan1 2 Timothy J Reece2 3 Pankaj Sharma2 3 Shashi Poddar2 3 Stephen Ducharme2 3 Alexei Gruverman2 3 Yang Yang4 and Jinsong Huang1 2* The recombination of electrons and holes in semiconducting polymer–fullerene blends has been identified as a main cause of energy loss in organic photovoltaic devices
Youngkun (YK) Ahn
Theoretical study of the highest efficiency solar cell Fabrication and investigation of graphene transfer processes and its property change Process Design Engineer Samsung Electronics 2010 8 – 2010 12 5 대한민국 경기도 화성 Process design for Phase change-Random Access Memory (PRAM) Science Teacher Private institute for middle school students 2008 2
Performance testing of thermal and photovoltaic thermal
The comparison of thermal efficiency in Figure 10 shows that when electricity is being generated by the panels the thermal efficiency is reduced see also Table 10 The reason for this is because incident radiation generates electricity in the PV layer before reaching the absorber This observation is in agreement with Florchuetzs modification of absorbed solar energy in equation
Maximizing Solar
The results so far shows that combining thermal enhancement and optical concentration is a promising way to improve the efficiency of iron oxide photoelectrodes Our future plan is to explore this effect across multiple oxide material systems and implement an all solid-state PEC operating at elevated temperatures The specific plan includes: Heterojunction material development: 1) Identify
Sajad Naghavi
becomes critical for the efficiency enhancement of all solar thermal energy systems On the other hand latent heat storage has been located in the middle of attractions by different applications because of its high energy capacity specifically without changing the temperature The exact analysis of problems that deal with solar thermal collectors is not easy due to their non-linear nature
Energy Efficient Air Conditioning System Using Geothermal
It is well known that one unit of electrical energy saved is equal to more than two units produced One way of economizing the power is utilization of energy efficient systems at all locations In the present study the air conditioning system is analysed and an innovative way is suggested We use natural low temperature of shallow sub surface (1 - 3 m) of the earth—geothermal cooling system
A CFD Analysis Of A Solar Air Heater Having Triangular Rib
Anil Singh Yadav et al/Int J ChemTech Res 2013 5(2) 965 study is expensive as well as time consuming The results obtained with the CFD are of acceptable quality Chaube et al6 is carried out a 2-D computational analysis to assess the comparative performance of the absorber plate of a solar air heater with different roughness elements using commercial software package FLUENT 6 1
GENERAL NATIONAL AERONAUTICS AND SPACE ADMINISTRATION
CIRCUIT EFFICIENCY ENHANCEMENT STUDIES AT 12 G-Iz by Dr G M Branch GENERAL ELECTRIC COMPANY Tube Department Microwave Tube Operation Schenectady New York prepared 44 _I NATIONAL AERONAUTICS AND SPACE ADMINISTRATION May 29 1970 CONTRACT NAS3-11533 NASA Lewis Research Center Cleveland Ohio G J Chomos Project Manager Spacecraft Technology
Boosting photovoltaic efficiency with potent flexible
Their study demonstrated the application of a 38 1mm tall and 12 7mm wide aluminum strip to enhance the convective heat transfer from a heated plate in a wind tunnel at 10 m/s wind velocity Overall the turbulent length scale was observed to be independent of the chosen thickness instead it seemed to be related with the dimension of strips i e the height and the width
Journal
"Thermal stability of Al- and Zr-doped HfO2 thin films grown by direct current magnetron sputtering " J Vac Sci Tech A 23 1413 (2005) H Kim K C Saraswat and P C McIntyre "Comparative study on electrical and microstructural characteristics of ZrO2 and HfO2 grown by atomic layer deposition " J Mat Res 20 3125-3132 (2005)
Thermal performance enhancement of solar air collector
An experimental investigation of a novel V-groove absorber plate with pin-fins on double-pass solar air collector was made to study the enhancement of thermal performance The objective of this work is to develop a solar air collector for drying agricultural products with enhanced heat transfer rate by employing pin-fins on V-groove absorber plate under varied configurations
Journal
"Thermal stability of Al- and Zr-doped HfO2 thin films grown by direct current magnetron sputtering " J Vac Sci Tech A 23 1413 (2005) H Kim K C Saraswat and P C McIntyre "Comparative study on electrical and microstructural characteristics of ZrO2 and HfO2 grown by atomic layer deposition " J Mat Res 20 3125-3132 (2005)
Design of earth–air heat exchanger system
12/09/2015The earth–air heat exchanger (EAHE) is a promising technique which can effectively be used to reduce the heating/cooling load of a building by preheating the air in winter and vice versa in summer In the last two decades a lot of research has been done to develop analytical and numerical models for the analysis of EAHE systems Many researchers have developed sophisticated equations
EXPERIMENTAL STUDIES ON A HYBRID DRYER
A solar-biomass hybrid tunnel dryer has been designed and fabricated A biomass stove-heat exchangerchimney using briquetted ricehusk as fuel complements the solar tunnel dryer and thus extends the working time of the dryer Experiments have been conducted to test the performance of the dryer and chilli and mushroom have been dried During the load test conducted for chilli 19 5kg of ripe
Multiple
and thermal performance This study presents the development of a methodology for the modelling and design of multiple-inlet systems as well as a numerical study of such a system The modelling component consists of two aspects namely the fluid mechanics and the energy balance of the system A flow model was developed based on flow networking techniques in order to assess the inlet flow
Solar Thermal Engineering
Besides the technical issues related to solar thermal energy the economic and environmental subjects were of interest for review So the topics including solar radiation potential and feasibility study flat and evacuated tube collectors trough and Fresnel collectors solar Stirling systems heliostat fields solar chimney solar desalination nanofluid in solar thermal systems green
Energies
The underground air tunnel system shows promising potentials for reducing energy consumption of buildings and for improving indoor thermal comfort whereas the existing dynamic models using the computational fluid dynamic (CFD) method show computational complexity and are user-unfriendly for parametrical analysis In this study a dynamic numerical model was developed with the on-site
Experimental Analysis of Glazed Solar Photovoltaic Thermal
Efficiency Thermal Efficiency Overall Efficiency and Solar Energy 1 Introduction Since the industrial revolution in eighteenth century energy has been one of the greatest challenges facing mankind Fossil fuels such as coal petroleum and natural gas have been the main energy resources for everything vital for human society (transportation electricity lightning heating of buildings
Dr B K Maheshwari
The thermal efficiency of the roughened duct solar air heater is found to be about 15-40% higher than smooth duct solar air heater highest thermal performance advantage is at the lowest flow rate The improvement is attributed to the heat transfer enhancement due to the artificial roughness on the absorber plate and reduction in the mean absorber plate temperature The pumping power






