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The presentation of Slovenia
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Primary School entjernejStudents: Nea Cerinek, Eva Novak, Svetlana Gotovac,
Anja nidariMentors: Slavica Jordan, Roman Turk
SLOVENIA
GREEN HEATING
CONTENTS
WHAT ARE SOLAR PANELS
RESEARCH QUESTION AND GOAL
TO DO LIST
HYPOTHESIS
WORK COURSE
RESULTS
VERIFICATION THE HYPOTHESIS
IMPROVEMENTS
FUTURE RESEARCH
WHAT ARE SOLAR PANELS?
THEY TRANSFORM SOLAR ENERGY INTO THERMAL ENERGY
RESEARCH QUESTION AND GOAL
HOW TO INCREASE THE POWER OF SOLAR PANELS?
THE DIFFERENCE BETWEEN:
SOLAR PANELS
SOLAR ENERGY IS TRANSFORMED INTO THERMAL ENERGY
SOLAR CELLS
SOLAR ENERGY IS TRANSFORMED INTO ELECTRICITY
FORM HYPOTHESISMAKE A PROTOTYPE MODEL OF A SOLAR PANEL INITIAL MEASURMENTS CALCULATE ITS POWERSEARCH FOR POSSIBLE IMPROVEMENTS AND
MAKE MODELS OF IMPROVED PANELSADDITIONAL MEASURMENTSCALCULATE POWER OF THOSE PANELSVERIFICATION OF HYPOTHESISOPTIONS FOR FURTHER RESEARCH
RESEARCH STEPS
HYPOTHESIS
THE POWER OF OUR PROTOTYPE MODEL OF A SOLAR PANEL WOULD INCREASE IF WE USED LONG BLACK PIPE, BLACK MATTE LINING AND MIRRORS
THE EQUATIONS FOR CALCULATION OF THE POWER OF THE PANEL
=2 2 ( )
P=2 THE POWER IS PROPORTIONAL TO:
- THE VOLUME FLOW OF WATER - THE SPECIFIC HEAT OF WATER 2- THE TEMPERATURE DIFFERENCE BETWEEN OUTGOING AND INCOMING WATER
WORK COURSE
MAKING OUR PROTOTYPE MODEL OF A PANEL
MEASURING (THE FLOW, TEMPERTURES )
CALCULATING THE POWER OF THAT PANEL
CHANGING THE PARAMETERS
STRINGING UP THE PIPES IN THE BOX
INSTALLING THE PLASTIC BOTTLE (FILLED WITH WATER) IN THE POULTRY WATER SUPPLY DEVICE
INSTALLING THE THERMOMETERS (ONE AT THE START AND ON THE END OF IT) AND VALVE
PREPARING THE REFLECTOR
WORK COURSE
START WITH MEASUREMENT OF THE TEMPERATURE
PROBLEMS
PERFORATED PIPES
CURRENT FLOW OF THE WATER WAS NOT CONSTANT
PROTOTYPE MODEL OF PANEL (1)
BOX (PLASTIC)
PIPE
FOIL (ALUMINIUM)
STYROFOAM
POULTRY WATER SUPPLY DEVICE
PLASTIC BOTTLE (COCA COLA)
THERMOMETER AND VALVE
REFLECTOR
PROTOTYPE MODEL OF A SOLAR PANEL
SCHEME OF PROTOTYPE MOEL OF A SOLAR PANEL
RESULTS 1*
PROTOTYPE MODEL OF A SOLAR PANEL
P [W]
2,1
0 1 2 3
*Pr - prototype
IMPROVEMENT no. 1 (2)
PROTOTYPE MODEL OF PANEL
MIRROR (FOIL ALUMINIUM, CARTON)
ATTACHED TO STYROFOAM PLATE
ILLUSTRATION OF THE EXPECTEDREFLECTION OF THE LIGHT
HOME-MADE MIRROR
RESULTS 2
P[W]
3,4
0 1 2 3 4
PANEL WITH MIRROR
IMPROVEMENT no. 2 (3)
PROTOTYPE MODEL OF PANEL
BLACK PIPE
OUR PANEL WITH BLACK PIPE
RESULTS 3
4
0 1 2 3 4 5
PANEL WITH BLACK PIPE
IMPROVEMENT no. 3 (4)
PROTOTYPE MODEL OF PANEL
LONGER PIPE + BLACK MATTE LINING
OUR PANEL WITH LONGER PIPE AND BLACK MATTE LINING
RESULTS 4
7,9
0 2 4 6 8 10
PANEL WITH LONG PIPE + BLACK MATTE LINING
IMPROVEMENT no. 4 (5)
PROTOTYPE MODEL OF PANEL
BLACK PIPE
BLACK MATTE LINING
OUR PANEL WITH BLACK PIPE AND BLACK MATTE LINING
RESULTS 5
P[W]
19,4
0 5 10 15 20 25
PANEL WITH LONG PIPE + BLACK MATTE LINING
RESULTS
OUR BEST IMPROVEMENT
WERE BLACK PIPE
+ BLACK MATTE LINING
P[W]
PROTOTYPES
RESULTS
no. measurment
volume ofthewater
time interval
input temp.
output temp.
- power of thepanel
=22
[W]
1 23 60 20.4 21.7 1.3 2.1
2 22 60 20.6 22.8 2.2 3.4
3 22 60 21 23.6 2.6 4.0
4 19 60 20.7 26.6 5.9 7.9
5 22 60 20.8 33.4 12.6 19.4
CONFIRMING OF THE HYPOTHESIS
WE PARTIALLY CONFIRMED THE HYPOTHESIS:
WE USED BLACK PIPE (NOT LONGER)
BLACK MATTE LINING
X WE HAVE NOT YET USED THE MIRRORS
FURTHER IMPROVEMENTS
BLACK COPPER PIPE
MOVING ROBOT (ON BATTERIES), WHICH WOULD MOVE THE MIRRORS
GLAZED
FURTHER RESEARCH
HOW TO RECYCLE SOLAR PANELS?
HOW COULD THE SOLAR PANELS TRANSFORM THERMAL ENERGY INTO ELECTRICITY?
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