Girassol
armando herculano - [email protected] - Portugal - 04.Abril.2004 1/23
Team from Escola EB2,3
“A Ribeirinha” - Vila do Conde,
Competitor in the
“Padre Himalaya” 20041 Contest
1- http://www.cienciaviva.pt/himalaya
> "Girassol" (SunFlower) is a panel solar oven.
>This oven is appropriate for picnics on thebeach or in the garden. It is light andcollapsible, but it can also be constructed to bepermanently set up.
> It is constructed with common, strong, and light household materials.
> The cooker can remain stationary as the foodcooks (up to 3 hours).
Girassol
armando herculano - [email protected] - Portugal - 04.Abril.2004 2/23
> The cooking chamber can consist of a glass or Pyrex container invertedover an aluminium pot, or a transparent enclosure can be made with woodand plastic film.
> The pan must be black and made of metal.The glass container will serve to accumulateheat.
> You can use reflective gift wrapping paper oraluminum foil to coat the reflector.
> For the support structure, we use corrugated cardboard or plastic.
Girassol
armando herculano - [email protected] - Portugal - 04.Abril.2004 3/23
38,3cm
112,5cm
10
4,5
cm
43,5
4,7
21,2
4,7
30,7cm
Girassol
armando herculano - [email protected] - Portugal - 04.Abril.2004 4/23
38,6
2,2
12,7
39,3
60,2
Girassol
armando herculano - [email protected] - Portugal - 4.Abril.2004 5/23
Girassol
armando herculano - [email protected] - Portugal - 04.Abril.2004 7/23
51,1
46,8
8,5
19,7
30,1
51,1
46,8
30,1
8,5
19 ,7
Girassol
armando herculano - [email protected] - Portugal - 04.Abril.2004 8/23
2,0
43,8
44,3
13,5
35,62,2
17
,1
Girassol
armando herculano - [email protected] - Portugal - 04.Abril.2004 9/23
Girassol
armando herculano - [email protected] - Portugal - 04.Abril.2004 10/23
23,315,8
32
,32
5,3
1,7
26,3 19,7
38,0
37,5
12,5
14,6
17
,0
14,77,2
17,7
22,7
30,3
3,8
33,2
6,4
3,2
19,2
76cm
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orn
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10
89cm
Girassol
armando herculano - [email protected] - Portugal - 04.Abril.2004 11/23
44,0cm 52,0cm 52,0cm
66,0
cm
70,0
cm
55,5
cm
70,0
cm
44,0cm 52,0cm 52,0cm
66,0
cm
70,0
cm
70,0
cm
10
0,1
cm
55,5
cm
PVC pipes(VD 16)
armando herculano - [email protected] - Portugal - 04.Abril.2004 12/23
3.5mm Alveolar Polypropylene (PP)
16 mm PVC pipe
(electric VD 16) Plastic Tie
Materials
Reflectiv paper
Girassol
Black turnished ink
High (800ºC)
temperatures
resistant
Transparent plastic foil
Polypropylene (PP)
armando herculano - [email protected] - Portugal - 04.Abril.2004 13/23
Tape - 15 mm double face
Polypropylene (PP) transparent basin
Materials
(3mm) Cork leaf
Girassol
VELCRO
armando herculano - [email protected] - Portugal - 04.Abril.2004 14/23
Enalelled black Iron pan with “pyrex” glass
plate
Materials
Asiatic WOKThe handle is dismountable
Girassol
armando herculano - [email protected] - Portugal - 04.Abril.2004 15/23
Front side
Without reflector paper
Back side
Girassol
armando herculano - [email protected] - Portugal - 04.Abril.2004 16/23
Place the velcro between the parts Place the double-face tape in the extremities to fix the reflector
Girassol
armando herculano - [email protected] - Portugal - 4.Abril.2004 17/23
Girassol
Reflector paper placing
armando herculano - [email protected] - Portugal - 04.Abril.2004 18/23
Girassol
2 types of stove
Bamboo structure and polypropylene foil
Inverted Plastic (PP) transparent bucket
armando herculano - [email protected] - Portugal - 04.Abril.2004 29/23
Girassol
East-Timor University students
armando herculano - [email protected] - Portugal - 04.Abril.2004 20/23
Girassol
3 Liters of water ( Timor-Leste, Dili- UNTL - 2005)
T(Water) = 0,349 · Time(minutes) + 26,95
0
10
20
30
40
50
60
70
80
90
100
110
0:0
0
0:1
0
0:2
0
0:3
0
0:4
0
0:5
0
1:0
0
1:1
0
1:2
0
1:3
0
1:4
0
1:5
0
2:0
0
2:1
0
2:2
0
2:3
0
2:4
0
2:5
0
3:0
0
3:1
0
3:2
0
3:3
0
Time (hh:mm)
Te
mp
era
ture
(
ºC )
Stove
Water
linha de Tendência da Temper. da Água
Temperature
ascent
~ 0,35ºC / minuto
Pasteurized water
[65ºC during 15 minutes]
armando herculano - [email protected] - Portugal - 04.Abril.2004 21/23
Girassol
Santa Bakhita –Dili Orphanage
armando herculano - [email protected] - Portugal - 04.Abril.2004 22/23
Girassol
Cookery TV show recordings “Timor-Contacto” - RTPi - Dili
armando herculano - [email protected] - Portugal - 04.Abril.2004 23/23
Girassol (sunflower)
António Palma SerafimArmando Herculano Lopes Ferreira
PORTUGAL
