Drinking water from the old residents of Kerman was provided through aqueducts and wells because of submerged water. The qnats traveled only from some neighborhoods on their route, and the houses that the qanats passed through were worth more than other houses, because the inhabitants could get their water less effortlessly. Another part of the people's drinking water was supplied through the wells, and they dumped the well with the well in the house where the well was located. But a large part of the drinking water was supplied from the water contained in the tanks, which were called water reservoirs. These water caches were divided into two categories, one for household water caldrons and one for warehouses in the deserts, towns and villages for public use. There are many water reservoirs in the Kerman area, which is located on the edge of the desert.
The building of water storage can not be circular, without columns. Hence, in the old days, they had to consider columns in one or more rows to lean over the dome or dipping roofs. In some cisterns, the floor of a water tank, or the same pool in the water tank, was covered with a layer of lead to actually be insulating to prevent the heat and heat of the land, and thus the cooling of the water in the dock.
Apart from these water storage facilities, in many parts of the country, ruinous structures are found in the form of large conical water storage depots used to store ice. These warehouses were called refrigerators and, as its name implies, they were a place for the accumulation of ice, and they provided ice to the people during the warm season of the summer.
The ice-making method of these glaciers was very interesting, and behind the walls of its long and thick, smooth surfaces that lay flat on the winter nights and froze in the extreme cold of winter. The use of this long wall was that it prevented sunshine from frozen water during the day. If there were a few sunshine on ice surfaces in the east and west, then at these points they were building side walls.
The amount of water that was driven every day on frozen masses from previous ice was to a degree that the cold of one night could freeze it, or, in other words, the height of water on ice surfaces did not exceed a few centimeters. This technical condition ensures that refrigerators have to thoroughly level the ice levels. After the ice was reaching 30 to 40 centimeters, the ice was split into pieces and stored and stored into ice cisterns that were embedded as circular water storage and adjacent to ice levels. On the floor of the ice storage, one or more wells were predicted to move away from the floor of the warehouse, which would probably have been caused by the melting of the ice in the heat of the season, and strawed on each floor of the ice to prevent them from sticking to Prevent each other. These ice tanks had two corridors, one for storing ice after it was prepared, and another for removing it in the summer.
In Kerman there were lakes in the outskirts of the city, where in the ice days of the winter, water was poured into the pool beside it, and it immobilized the ice, then it broke down the ice early in the morning and poured into the ice to fill it. They were then closed in the refrigerator and opened in the summer and loaded with ice inside it.