Physicsguy - That is very inaccurate. The Yakhchal was simply their equivalent of an icehouse. They still had to bring the ice into the building from elsewhere. Does it make sense to put water inside an insulated building to freeze it? How would the heat energy be removed from the water to freeze it?
In addition to that inaccuracy, does the fact that the Persians called their "icehouse" a Yakhchal mean that all ice made/stored in the "old days" was made in the same fashion? My own grandfather cut ice from rivers during the cold months just as Palpatane described above. Given the conditions “in the old days” there is bound to be many correct answers.
I am not sure if you are to be taken seriously or not. From the posts of yours I have read I would have to guess you are simply trying to see how long a person can post meaningless personal attacks before being banned. If so then you at least have some goal in mind when you post ill formed arguments based mostly on personal attacks. If this is not the case then you are a very sad specimen.
Don’t worry about how I deal with certain posters here. Idiots have a say on everything, and
ridicule anyone not agreeing with them. They deserve no respect, and understand only the
language of insult. They also are very quick to run to the Moderator and whine like little boys.
You should see these pretentious individuals’ private messages to me. Insulting, stupid and
immature. Yet, they put on a facade of civility and constraint in the forum.
As for your question of how to bring water or freeze it, or remove the heat energy from the
water. The Persians/Iranians had that figured out 2,400 years ago.
Water from streams/rivers were redirected into the structure during the cold seasons, using
above and underground canals. And, poured of enough dept to be able to completely freeze
Or if the river/stream was frozen, ice was cut and stored. The ice was also used for the making of
Faloodeh, the traditional Persian ice cream. Which is made even today in Iran, and is the
specialty in a town called Shiraz. Red Wine drinkers should be familiar with the Grapes from
The subterranean space coupled with the thick heat-resistant construction material kept the
outside heat from reaching the interior space year round. These Yakhchals were an Iranian
invention and many remain standing that were built hundreds of years ago.
The Yakhchals were constructed with a special mortar, composed of sand, clay, egg whites,
lime, goat hair, and ash in specific proportions. Which was resistant to heat transfer, and was
thought to be completely water impenetrable. The space often contained a system of
windcatchers, to catch the slightest breeze and funnel it down through internal, vertically placed
wooded slats, that could easily bring temperatures inside the space down to frigid levels even in
summer days. As a result, the ice melted slowly and ice was available year-round.