Hello,
           This is my last and final post about the design process problem.
I have done all the work on paper itself and nothing on digital,though I am making an infographic as my final solution is DIY(do it yourself) and I'll upload it by tomorrow.

In the above picture I have tried to understand the methods that my target audience use in order to keep their houses or roms cool.

 In this follwing picture,i got down on the best and worst thing about coolers and Ac's.
After that I got to know about an another phenomenon of air cooling.

Again,I have tried to explain the same phenomenon with simple human body example.

The above picture shows the solution to an issue very similar to mine in Dhaka.This solution uses the same phenomenon as i have explained in the sheet before this.

After understanding the solution used in dhaka,I tried to improve the same design making it more efficient.The above are some rough sketches and ideas of the same.

The above picture shows the points which i think are necessary in my final solution.

The last line in blue states that i realised that the solution used in dhaka is one of the best and so i decided to use the same solution and add up some things for improvement.

This picture consists of the final points of my solution.

This is the final sketch of my solution with a bit of information and also this solution is DIY(do it yourself) and very cheap to manufacture.Also,I'll make a infographic as a guide to make this and post it here and make working model this weekend to actually see how effectively this thing works.