Difference between revisions of "Cardboard solar concentrator (type of solar cooker)"

Line 1: Line 1:
 
{{ {{tntn|Tuto Details}}
 
{{ {{tntn|Tuto Details}}
|SourceLanguage=none
+
|Main_Picture=Cardboard_solar_concentrator_(type_of_solar_cooker)_Capture_d_e_cran_2018-06-21_a_00.27.09.png
|Language=fr
 
|IsTranslation=0
 
 
|Licences=Attribution (CC BY)
 
|Licences=Attribution (CC BY)
 
|Description=Small solar parabola light, cheap and very easy to make.
 
|Description=Small solar parabola light, cheap and very easy to make.
Line 12: Line 10:
 
|Cost=10
 
|Cost=10
 
|Currency=EUR (€)
 
|Currency=EUR (€)
 +
|SourceLanguage=none
 +
|Language=fr
 +
|IsTranslation=0
 
}}
 
}}
 
{{ {{tntn|Introduction}}
 
{{ {{tntn|Introduction}}
Line 25: Line 26:
 
}}
 
}}
 
{{ {{tntn|Materials}}
 
{{ {{tntn|Materials}}
|Material=Aluminium foil,
+
|Material=- Aluminium foil  
  
Cardboard,
+
- Cardboard  
  
Duct tape,
+
- Duct tape  
  
Small bamboo or wooden sticks  
+
- Small bamboo or wooden sticks  
  
Rope
+
- Rope
 
|Tools=
 
|Tools=
 
}}
 
}}
 
{{ {{tntn|Separator}}}}
 
{{ {{tntn|Separator}}}}
 
{{ {{tntn|Tuto Step}}
 
{{ {{tntn|Tuto Step}}
 +
|Step_Picture_00=Cardboard_solar_concentrator_(type_of_solar_cooker)_Capture_d_e_cran_2018-06-21_a_00.33.48.png
 
|Step_Title=Building the parabola
 
|Step_Title=Building the parabola
 
|Step_Content=Cut the cardboard into 12 rectangular pieces of about 23cm x 61 cm each. Draw and cut the shape as below on each of the cardboard panel.
 
|Step_Content=Cut the cardboard into 12 rectangular pieces of about 23cm x 61 cm each. Draw and cut the shape as below on each of the cardboard panel.
 
}}
 
}}
 
{{ {{tntn|Tuto Step}}
 
{{ {{tntn|Tuto Step}}
 +
|Step_Picture_00=Cardboard_solar_concentrator_(type_of_solar_cooker)_Capture_d_e_cran_2018-06-21_a_00.27.01.png
 +
|Step_Picture_01=Cardboard_solar_concentrator_(type_of_solar_cooker)_Capture_d_e_cran_2018-06-21_a_00.26.53.png
 
|Step_Title=
 
|Step_Title=
 
|Step_Content=Make a straight fold 24 cm inches away from the small end of the panel.  Drill a hole in each of the two lid flaps in the narrow end of the panel (please refer to the image).  As indicated below, fold the lid flaps away from you.
 
|Step_Content=Make a straight fold 24 cm inches away from the small end of the panel.  Drill a hole in each of the two lid flaps in the narrow end of the panel (please refer to the image).  As indicated below, fold the lid flaps away from you.
Line 58: Line 62:
 
}}
 
}}
 
{{ {{tntn|Tuto Step}}
 
{{ {{tntn|Tuto Step}}
 +
|Step_Picture_00=Cardboard_solar_concentrator_(type_of_solar_cooker)_Capture_d_e_cran_2018-06-21_a_00.38.07.png
 
|Step_Title=
 
|Step_Title=
 
|Step_Content=To create the support, drill a small hole in the middle of the lower half in four of the panels. Once you have done the first hole, leave a panel between it and the next hole. Do the same for the panels in front in order for them to be symmetrical. 
 
|Step_Content=To create the support, drill a small hole in the middle of the lower half in four of the panels. Once you have done the first hole, leave a panel between it and the next hole. Do the same for the panels in front in order for them to be symmetrical. 
 
}}
 
}}
 
{{ {{tntn|Tuto Step}}
 
{{ {{tntn|Tuto Step}}
 +
|Step_Picture_00=Cardboard_solar_concentrator_(type_of_solar_cooker)_Capture_d_e_cran_2018-06-21_a_00.08.21.png
 
|Step_Title=
 
|Step_Title=
 
|Step_Content=Slide two 35 cm-long bamboo or wooden sticks in parallel through the four holes to form a pair of support rails for the Stirling engine or the cooking pot. Glue small pieces of cardboard on the exterior, close to the narrow opening and alongside the sticks for more resistant rails.  Secure the edges of the stick on the exterior with rubber band to prevent the sticks from sliding.  Tie two 29 cm-long bamboo or wooden sticks perpendicularly to the support rails and tighten the sticks’ lower end between the folded lid flaps for each lower panel.
 
|Step_Content=Slide two 35 cm-long bamboo or wooden sticks in parallel through the four holes to form a pair of support rails for the Stirling engine or the cooking pot. Glue small pieces of cardboard on the exterior, close to the narrow opening and alongside the sticks for more resistant rails.  Secure the edges of the stick on the exterior with rubber band to prevent the sticks from sliding.  Tie two 29 cm-long bamboo or wooden sticks perpendicularly to the support rails and tighten the sticks’ lower end between the folded lid flaps for each lower panel.
Line 70: Line 76:
 
}}
 
}}
 
{{ {{tntn|Tuto Step}}
 
{{ {{tntn|Tuto Step}}
 +
|Step_Picture_00=Cardboard_solar_concentrator_(type_of_solar_cooker)_Capture_d_e_cran_2018-06-21_a_00.04.57.png
 
|Step_Title=
 
|Step_Title=
 
|Step_Content=Your parabolic solar cooker is now ready. You just need to position it in front of the sun so it can produce heat. For cooking, please make sure to use a black container.
 
|Step_Content=Your parabolic solar cooker is now ready. You just need to position it in front of the sun so it can produce heat. For cooking, please make sure to use a black container.

Revision as of 23:42, 20 June 2018

Prototype de avatarElisa | Categories : Food, Energy

Small solar parabola light, cheap and very easy to make.

Difficulty
Easy
Duration
40 minute(s)
Cost
10 EUR (€)
Other languages:
English • ‎français
License : Attribution (CC BY)

Introduction

Overview

This small solar parabola is light, cheap and very easy to make.

It produces a medium temperature of 120°C, wether it is to fuel a Stirling engine or to cook (hard-boiled eggs in 30 min.)

It is made of 24 small reflective panels to concentrate the sunlight.

You need: aluminium foil, cardboard, duct tape, small bamboo or wooden sticks and a rope.

Materials

- Aluminium foil

- Cardboard

- Duct tape

- Small bamboo or wooden sticks

- Rope

Tools

Step 1 - Building the parabola

Cut the cardboard into 12 rectangular pieces of about 23cm x 61 cm each. Draw and cut the shape as below on each of the cardboard panel.



Step 2 -

Make a straight fold 24 cm inches away from the small end of the panel.  Drill a hole in each of the two lid flaps in the narrow end of the panel (please refer to the image). As indicated below, fold the lid flaps away from you.


Step 3 -

Position the panels side by side, alongside the longer side of each panel and tie them with the duct tape until they are joined together and form a circle. Glue the aluminium foil on the whole inner surface of the parabola.

Step 4 -

Thread a rope through the holes you previously drilled in the lower end of the parabola to join the lower panels together.

Step 5 -

Tie a knot with the slack rope around a short stick: we now have a stiff and deep parabolic shape.  For greater efficiency, cover the circular opening at the bottom of the parabola with a reflective disc.

Step 6 -

To create the support, drill a small hole in the middle of the lower half in four of the panels. Once you have done the first hole, leave a panel between it and the next hole. Do the same for the panels in front in order for them to be symmetrical. 



Step 7 -

Slide two 35 cm-long bamboo or wooden sticks in parallel through the four holes to form a pair of support rails for the Stirling engine or the cooking pot. Glue small pieces of cardboard on the exterior, close to the narrow opening and alongside the sticks for more resistant rails. Secure the edges of the stick on the exterior with rubber band to prevent the sticks from sliding. Tie two 29 cm-long bamboo or wooden sticks perpendicularly to the support rails and tighten the sticks’ lower end between the folded lid flaps for each lower panel.



Step 8 -

Join both perpendicular junctions of the rails/sticks to a thread or a rope for better load stability - it can carry up to 2.5 kg.

Step 9 -

Your parabolic solar cooker is now ready. You just need to position it in front of the sun so it can produce heat. For cooking, please make sure to use a black container.



Notes and references

Please click here if you want to leave a comment

Writer: Matt Lechien

Comments

Draft