Solar Powered Pizza - Progress #3

Justin Ly
Fri, 04 Nov 2016 09:20 AM

Result: 

The temperature inside the container reached a high of 90 degrees celsius. With this temperature, it took around 2 hours for the hashbrowns to be ready. However, it must be taken into account that the hashbrowns placed inside were frozen, thus it took time for it to thraw. When we took out the hashbrowns it was burning and we could not hold it properly. Of the two hashbrowns, one with cling wrap and one with foil, it was evident that the foil one tasted much better. The cling wrap hashbrown were soggy and falling apart. This could have been due to thrawing process. While the foil hashbrown were crunchy and tasted much better but the middle was similar to the cling wrap one. 

It should be taken into account that leaving frozen outside for a large amount of time is not good. It promotes bacteria growth and could cause sickness. 

Improvements: 

After the first day of creating the container, we found that there were some problems with our solar powered oven. Thus, on the second day we work to improve our oven. 

In order to pass the 90 degrees limit from the first day we chose to add more insulation inside the oven. Before, inside the container were was nothing to insulate the food. To impreve this we chose to use newspaper and line the edges. We also wrapped the newspaper with foil to increase reflection onto the food. This will allow less room for air to escape, and concentrate in one section of the container were the food will sit. 

 Another imprrovement we investigated in was with the use of corrigated black cardboard instead of normal flat black cardboard. The use of the corrigated cardboard provided more surface area and thus subsequently allowed the absorbtion of heat to increase. In combination with the additional reflective panels, there was an increase up to 23 degrees changing from 80 degrees to 103 degrees. At this point, the solar oven could be used to boil water and kill any bacteria. This would make the filtered water drinkable without any negative health impacts. 

Conclusion:

In conclusion, we identified many environmental and health issues in third-world countries. In order to address these problems, we decided to create a Solar-powered oven. This could provide a fuel-less way to heat-up food. Using constant modification and analyse we were able to improve on our original oven.

 

African Countries

Solar Energy Potential (Potential Global Horizontal Irradiation)

% Pop. Below Poverty Line

$1.90 a day/$3.10 a day (US$)

Angola

935 615 1 569 600 kWh/km²/yr

30.1% / 54.5%

Burkina Faso

52 167 kWh/km²/yr

55.3%/80.5%

Burundi

7 212 kWh/km²/yr

77.7%/92.2%

Central African Republic

501 023 kWh/km²/yr

66.3%/82.3%

Chad

1 036 490 kWh/km²/yr

38.4%/64.8%

Dem. Rep. of Congo

1 790 372 kWh/km²/yr

77.1%/90.7%

Ethiopia

522 231 kWh/km²/yr

33.5%/71.3%

Guinea

109 061 kWh/km²/yr

35.3%/68.7%

Guinea - Bissau

806 kWh/km²/yr

61.7%/83.6%

Liberia

76 813 kWh/km²/yr

68.6%/89.6

Madagascar

470 590 kWh/km²/yr

77.8%/90.5%

Malawi

2 291 kWh/km²/yr

70.9%/87.6%

Mali

1 025 676 kWh/km²/yr

49.3%/77.7%

Mauritania

851 352 kWh/km²/yr

10.8%/32.5%

Mozambique

263 635 kWh/km²/yr

68.7%/87.5%

Niger

809 033 kWh/km²/yr

50.3%/81.8%

Rwanda

5 382 kWh/km²/yr

60.3%/80.7%

Tanzania

80 565 kWh/km²/yr

46.6%/76.1%

Zambia

10 177 kWh/km²/yr

64.4%/78.9%

http://www.irena.org/DocumentDownloads/Publications/IRENA_Africa_Resource_Potential_Aug2014.pdf

 

http://databank.worldbank.org/data/views/reports/ReportWidgetCustom.aspx?Report_Name=POV_REG_2&Id=29f02f2f&tb=y&dd=n&pr=n&export=y&xlbl=y&ylbl=y&legend=y&isportal=y&inf=n&exptypes=Excel&country=AGO,BEN,BWA,BFA,BDI,CMR,CPV,CAF,TCD,COM,ZAR,COG,CIV,ERI,ETH,GAB,GMB,GHA,GIN,GNB,LSO,LBR,MDG,MWI,MLI,MRT,MOZ,NAM,NER,NGA,RWA,STP,SEN,ZAF,SWZ,TZA,TGO,UGA,ZMB,ZWE&series=SI.POV.DDAY,SI.POV.2DAY&zm=n

 

This data above is showing countries in Africa's potential solar energy and then their percentage of people under the poverty line ($1.90 or $3.10 per day). The countries italicised are the countries that would most benefit our product, as they have a high potential capacity to gain large amounts of solar energy, and also have a high percentage of their population under the poverty line. These countries were: the Central African Republic, the Democratic Republic of Congo, Liberia, Madagascar, Mali, Mozambique and Niger. These countries were targetted as they all had a potential energy of over 75% of their area, apart Mozambique, and had over 75% of their population under $3.10 US a day. Mozambique still being applicable due to it's large population percentage under the poverty line, and a significant area, which allows for a significant solar energy use.

Comments are not currently enabled

© Copyright 2017 Newington College ICT