don't about that certain one here are many ideas/videos https://www.youtube.com/results?search_query=diy+air+cooler+with+fan
ice in a bucket, fan blowing across the top-referred to as a swamp cooler.
Is this the project you're looking for? https://www.hometalk.com/30017925/homemade-ac-unit
just put a large bowl of ice in front of a fan. the air blowing across the ice cools the air. very simple.