solar panels on the facades

Experimental study on the performance of a prism-shaped integrated collector-storage solar water heater

Experimental study on the performance of a prism-shaped integrated collector-storage solar water heater

... equals to the ratio between the mass-weighted average temperature and the solar radiation may be used for the purpose of the comparison, which should reflect the effect of solar radiation on the temperature ... from the solar radiation, the tank wall heats a thin vertical layer of water along the tank wall Part of this heat is then transferred by diffusion towards the core of the tank The water of the ... circulation and to insure accurate temperature measurement Reflecting shields were used on the tip of the thermocouple junctions to minimize the effect of direct solar radiation on the temperature

Ngày tải lên: 05/09/2013, 15:28

12 525 1
Optimization of design and operating parameters on the year round performance of a multi-stage evacuated solar desalination system using transient mathematical analysis

Optimization of design and operating parameters on the year round performance of a multi-stage evacuated solar desalination system using transient mathematical analysis

... a passive solar still, the solar radiation is received directly by the basin water and is the only source of energy for raising the water temperature and consequently, the evaporation leading ... parameters on the performance and thermal characteristics of the system 2 Description of the multi-stage evacuated solar desalination system The Multi-stage evacuated solar desalination system ... stages stacked one over the other The condenser surface of bottom stages acts as the evaporator surface for the stages above The system consists of two flat plate collectors connected either in series

Ngày tải lên: 05/09/2013, 16:11

26 572 0
scientific american  special edition  -  2003 vol 13 no3  -  new light on the solar system

scientific american special edition - 2003 vol 13 no3 - new light on the solar system

... lively debate on the origin and evolution of the solarsystem Astronomers assume that all the planets condensedfrom the solar nebula at about the same time If this premise istrue, then one of three ... captured only one face of Mercury; the other side has nev-er been seen By measuring the acceleration of Mariner in Mercury’s sur-prisingly strong gravitational field, astronomers confirmed one of the ... beads on very long strings The limits on their motion explain the sharp boundaries of features such as coronal holes Within the tenuous plasma, the magnetic pressure (pro-portional to the strength

Ngày tải lên: 12/05/2014, 16:27

101 509 1
On the solid phase crystallization for thin film silicon solar cells on glass

On the solid phase crystallization for thin film silicon solar cells on glass

... incubation time while 200ETP had the longest incubation time 70 Figure 4.11 The XRD FWHM as a function of incubation time The larger the FWHM, the lower the MRO of the a-Si:H A good correlation ... Silicon based thin film solar cells on the other hand do not have issues with the availability of raw materials since silicon is the second most abundant material on earth In addition, Si is non-toxic ... out The contacting scheme is beyond the scope of this Thesis and is represented here in a simplified form The solar cell design adopts a superstrate configuration where the sunlight enters the

Ngày tải lên: 10/09/2015, 09:31

166 347 0
DSpace at VNU: Influence of Surface Treatment and Annealing Temperature on the Recombination Processes of the Quantum Dots Solar Cells

DSpace at VNU: Influence of Surface Treatment and Annealing Temperature on the Recombination Processes of the Quantum Dots Solar Cells

... passivation thickness on the recombination resistance of the QDSSCs To determine the effect of the ZnS thickness on the recombination resistance of the QDSSCs, we considered the I-V curves of the ... to the high recombination processes at TiO2/QDs contact and the diffusion into the TiO2film Therefore, the ZnS passivation layers were coated on the surface of the CdS/CdSe QDs to reduce the ... without the ZnS passivation layers can occur in the high recombination processes between the photoelectrons in the conduction band (CB) of the TiO2 with the holes in the valence band (VB) of the

Ngày tải lên: 16/12/2017, 10:24

10 147 0
DSpace at VNU: Nonlinear Analysis on Flutter of Functional Graded Cylindrical Panels on Elastic Foundations Using the Ilyushin Nonlinear Supersonic Aerodynamic Theory

DSpace at VNU: Nonlinear Analysis on Flutter of Functional Graded Cylindrical Panels on Elastic Foundations Using the Ilyushin Nonlinear Supersonic Aerodynamic Theory

... conditions on the nonlinear flutter response of the FGM cylindrical panel at 1000( / ) V = m s in the case 2( ).a Fig 13 Effect of initial conditions on the nonlinear flutter response of the ... initial conditions in the case 1( ).a Fig 7 Nonlinear flutter response of the FGM panel at V =800(m s/ )with initial conditions in the case 1( ).b Fig 8 Nonlinear flutter response of the FGM ... initial conditions in the case 1( )a Fig 9 Nonlinear flutter response of the FGM panel at V =980(m s/ )with initial conditions in the case 1( )b By considering the flutter behavior of the panel

Ngày tải lên: 16/12/2017, 16:18

14 87 1
Study on the deposition of amorphous silicon and ito thin films for heterojunction solar cell application

Study on the deposition of amorphous silicon and ito thin films for heterojunction solar cell application

... (e, f); Response transients of the ZnO NWs sensors synthesised at 950to 100–5000 ppm NH 3 (g); the sensor response as a function of NH 3 gas concentration (h); the estimation of response and recovery ... that the diameter of CNTs strongly affected the electronic properties as well as gas-adsorption/desorption behavior Therefore, in this work, we also studied the effect of MWCNTs diameter on the ... increase the conductivity of the sensing material It is noted that the adsorption of the ethanol gas may change the two depletions as described above Before the ethanol gas is adsorbed, the widths

Ngày tải lên: 11/01/2020, 23:09

26 55 0
Analysis of the effects of cell temperature on the predictability of the solar photovoltaic power production

Analysis of the effects of cell temperature on the predictability of the solar photovoltaic power production

... Just as the human brains are connected by the means of neurons where the dendrites take information from other neurons whereas the axon shares the information, so does the ANN function (Hornik ... distribution companies since the amount of rays hitting the solar panel constantly varies during the day The power output changes depending on multiple factors affecting the PV, from weather conditions ... bias neuron and the corresponding hidden neuron, and then an addition operation gets carried out to add all the modified inputs that come to the neuron after they are multiplied with the weighted

Ngày tải lên: 17/08/2020, 20:13

12 23 0
Studying the influence of angolas tropical climatic conditions on the operational efficiency of silicon photovoltaic solar cells and finding technological solutions to enhance their perfomance

Studying the influence of angolas tropical climatic conditions on the operational efficiency of silicon photovoltaic solar cells and finding technological solutions to enhance their perfomance

... hole The absorption of a photon therefore leads to the creation of an electron-hole pair The radioactive energy of the photon is converted to the chemical energy of the electron-hole pair The ... temperature The most corrosive phenomenon on a solar cell array is the potential deterioration of the titanium-silver contact on silicon solar cells in humid environments Conditions of high temperature ... electron concentration in p-type semiconductors, npo is electron concentrations in the p-type semiconductor in thermodynamic equilibrium (cm-1) và n is the lifetime of electron (s) We note that, the

Ngày tải lên: 19/02/2021, 21:23

141 27 0
Study on the improvement of perovskite solar cell efficiency

Study on the improvement of perovskite solar cell efficiency

... Inje University Trang 5-1-Contents I INTRODUCTION 1 A Photovoltaic Energy Conversion 1 1 Solar Cells and Solar Energy Conversion 1 2 Solar Cell Applications 5 B Perovskite Solar Cells 6 1 Crystal ... Methylammonium Iodide (CH3NH3I) Synthesis 75 3 Solar Cell Fabrication 76 4 Characterization 77 B Results and Discussion 77 1 Effects of Laser Operation Parameters on the Grain Size of the Perovskite ... the reverse scan under AM 1.5G condition .85 Figure 37 (a) Cross-section of perovskite solar cell, (b) Two-dimensional model of perovskite solar cell for simulation 86 Figure 38 The prediction

Ngày tải lên: 25/08/2021, 09:12

15 7 0
On the elastoplastic stability problem of the cylindrical panels subjected to the complex loading wi...

On the elastoplastic stability problem of the cylindrical panels subjected to the complex loading wi...

... investigated By the Bubnov-Galerkin method, we have established the expression for determining the critical loads The sufficient condition of extremum for a long cylindrical panels was considered Some ... GY tape) CZ) +a) EY +E) Tam = Trang 4Because of the condition on the existence of non-trivial solution i.e Amn # 0 then we receive the expression for determining critical loads 2Á) +(22) (CE) ... expression We will obtain a system of linear algebraic equations with the unknowns C,; which is written in the matrix form la;][Œu¿] = Because of the condition on the existence of non-trivial

Ngày tải lên: 29/05/2022, 03:11

10 1 0
magnetohydrodynamics modeling of coronal magnetic field and solar eruptions based on the photospheric magnetic field

magnetohydrodynamics modeling of coronal magnetic field and solar eruptions based on the photospheric magnetic field

... region that is not influenced by the magnetic fields of other regions On the other hand, if the magnetic field lines inthe active region extend into another active region, theboundary conditions ... that of the coronal plasma,solar flares are widely considered to be a manifestation ofthe conversion of the magnetic energy of the solar coronainto kinetic and thermal energy, culminating in the ... harmonicsanalysis The boundary condition is based on the normalcomponent of the photospheric magnetic field, and theNeumann condition ofψ is the same as that in Eq (7). Using the above calculations,

Ngày tải lên: 04/12/2022, 15:06

28 2 0
Midterm report the current impact of solar power on sustainable development in vietnam from 2018 to 2023

Midterm report the current impact of solar power on sustainable development in vietnam from 2018 to 2023

... growth concentrated in developed countries taken together and the The challenges faced by emerging economies raise concerns about the continuous deployment of solar energy Addressing the existing ... restoration and improvement in affected areas.The world has witnessed rapid changes in the capacity of solar panels in the last few years, promising a bright future for the transformation of solar ... in the solar energy revolution. 26 is a cause for concern, as it will prolong the energy inequality between developed and developing nations, and transition to renewable energy sources where their

Ngày tải lên: 28/06/2025, 16:21

57 0 0
Mêting new people and on the phone

Mêting new people and on the phone

... meeting someone your age for the first time Check () the things you usually do Write an  next to the things you never do.  shake hands  touch the person on the arm  kiss the person on the cheek ... work These people are meeting for the first time Are they making good first impressions? The people in the first picture are making a good first impression I agree They’re smiling , and they ... Pair work What phone behavior bothers you? Ask your partner the questions, and check () the answers. Does it bother you when Trang 10C Join another pair Discuss these questions Compare your

Ngày tải lên: 30/06/2013, 01:26

15 479 0
Words and expressions that frequently appear on the TOEIC

Words and expressions that frequently appear on the TOEIC

... 10 % because of the recession.  depend on The cost of your flight depends on what time of year you go. The city's economy depends largely on the car industry.  divide among (more than two ... her mother on the phone every week,  wait for (something or someone) The dentist kept me waiting for ages.  wait on (a customer) She waited on shoppers all day at the department store. Others ... I'm on the waiting list for a ticket, but there are ten people ahead of me.  along with Why don't you take him along with you when you go?  because of We had to cancel the convention because

Ngày tải lên: 09/08/2013, 18:46

18 934 0
A Study on the Optimum Backwashing Method applied to Activated Carbon Process in Waterworks

A Study on the Optimum Backwashing Method applied to Activated Carbon Process in Waterworks

... spent carbon basins, and 1 virgin carbon basin) of granular activated carbon from 24 ones in the M water purification plant in Daegu; tried to find out the optimum condition by changing the time ... difference in the point of the minimum fluidization between spent and reactivated carbon results from the height of an activated-carbon layer and the condition of activated carbon, etc Also, ... backwashing at the LL water position required less time for the minimum fluidization than at the L water position; the loss head of both spent and reactivated carbon at the LL water position was 12㎝

Ngày tải lên: 05/09/2013, 08:40

14 708 0
Effect of dissolved organic matter (DOM) and biofilm on the adsorption capacity of powdered activated carbon in activated sludge

Effect of dissolved organic matter (DOM) and biofilm on the adsorption capacity of powdered activated carbon in activated sludge

... aeration tank was 29% of new PAC The adsorption capacity of the PAC in the aeration tank significantly decreased compared to the new one Figure 3 shows 3,5-DCP concentrations in the PACT and the ... shows the amount of organic carbon on PAC after each incubation Figure 6 shows the adsorption isotherm of new PAC, PAC in the aeration tank, and PAC after 1st and 4th incubation The adsorption ... 5recover the initial glucose concentration of 1000mg l-1 The incubation was defined as incubation from addition of glucose until DOC concentration in the medium was zero For biofilm developed on

Ngày tải lên: 05/09/2013, 08:40

10 563 0
EFFECT OF CARBON TO NITROGEN RATIO ON THE COMPOSTING OF CASSAVA PULP WITH SWINE MANURE

EFFECT OF CARBON TO NITROGEN RATIO ON THE COMPOSTING OF CASSAVA PULP WITH SWINE MANURE

... the production of ammonium as a result of the ammonification process (Huang et al., 2004) The pH patterns were concomitant to the previous studies on the composting of other organic wastes (Meunchang ... be considered mature when the temperature in the compost reached the ambient temperature With this, the compost in pile 5 was considered matured after day 40, which was the fastest among the ... it dropped to nearly 25% at the end of the composting period (Figure 4) Decrease in total organic carbon concentration resulted from the oxidation of carbon to carbon dioxide by microorganisms

Ngày tải lên: 05/09/2013, 09:08

18 633 0
A STUDY ON THE STRUCTURAL FEATUES OF ENGLISH NEWS STORY.DOC

A STUDY ON THE STRUCTURAL FEATUES OF ENGLISH NEWS STORY.DOC

... parts: the topic and the controlling idea. - The topic sentence is the subject of the paragraph. Eg: The color yellow is the color of mental activity. The topic: the color yellow - The controlling ... affects them with the means of language in the written form. However, with the written language there is no common situation as there is in face-to-face interaction. The situation, therefore, ... in the news plentiful of content and the content expresses the reaction to the news. Like the headline, it attracts the reader’s attentions to the main content of the news story. Trinh Thi...

Ngày tải lên: 02/09/2012, 11:12

62 1,1K 5
Cambridge.University.Press.The.Works.of.Archimedes.Volume.1.The.Two.Books.On.the.Sphere.and.the.Cylinder.Translation.and.Commentary.May.2004.pdf

Cambridge.University.Press.The.Works.of.Archimedes.Volume.1.The.Two.Books.On.the.Sphere.and.the.Cylinder.Translation.and.Commentary.May.2004.pdf

... this clause, on the relation between the volumes, from the next one, on the relation between the surfaces. In other words, the cylinder “itself ” is what we call the volume of the cylinder.” ... taken, the straight <lines> between the <two> points either all fall on the same side of the line, or some fall on the same side, and some on the line itself, but none on the other ... plane, they Eut. 246 have the same limits): that such <lines> are unequal, when they are both concave in the same direction and either one of them is wholly contained by the other and by the...

Ngày tải lên: 21/09/2012, 11:00

387 1,2K 3

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