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Notices by Tobias Haagen Michaelsen (tobiashm@mastodon.social)

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Tobias Haagen Michaelsen (tobiashm@mastodon.social)'s status on Sunday, 13-Aug-2023 03:58:10 JST Tobias Haagen Michaelsen
in reply to
- Thomas 🔭🕹️
- mekka okereke :verified:
@thomasfuchs @mekkaokereke this was used in combination with other techniques more than 2000 years ago in Persia to make buildings for storing, and sometimes making, ice in the desert (dry and hot). Pretty impressive engineering https://en.wikipedia.org/wiki/Yakhchāl
In conversation about a year ago from mastodon.social permalink
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  Yakhchāl
  
  A yakhchāl (Persian: یخچال "ice pit"; yakh meaning "ice" and chāl meaning "pit") is an ancient type of ice house, which also made ice. They are primarily found in the Dasht-e Lut and Dasht-e-Kavir deserts, whose climates range from cold (BWk) to hot (BWh) desert regions. In present-day Iran, Afghanistan, and Tajikistan, the term yakhchāl is also used to refer to modern refrigerators.The structure typically had a domed shape above ground, a subterranean storage space, shade walls, and ice pools. It was often used to store ice, but sometimes was used to store food as well as produce ice. The subterranean space and thick heat-resistant construction material insulated the storage space year-round. These structures were mainly built and used since ancient times in Persia. History Records indicate that these structures were built as far back as 400 BCE, and many that were built hundreds of years ago remain standing, where Persian engineers built yakhchāls in the desert to store ice, usually made nearby. The ice created nearby and stored in yakhchāls is used throughout the year...