Issues with Introduction

[MinMah23]

• [x] I found some inconsistency in use of Solar and some other words, I’ve highlighted those for you. Please check this through your document.
• [x] You wrote “It is indeed a fact that the demand for renewable energy has increased to deal with the problem.”, but what’s the problem that you’ve mentioned?
• [x] It is better to say: several designs have been proposed.

[DeeshaPatel]

Dear @MinMah23, Thank you so much for your clear and useful suggestions.

But for your last suggestions, I think algorithm is perfect word. The reason is that I am comparing algorithms not design of the Solar Cooker.