8. -17.
The true 'drum for solar steam generator' is an essential piece of technology in the history of egypt and other ancient civilizations. The solar steam drum is indispensable for the production of useful resources. It is used as a means of evaporation for use in various processes as is the case in ancient societies.
The building materials are high quality and of good strength, and it has been produced on a large scale.
DETAILS
Cyclopean drums where the two surfaces are made from the same material. One of the large drums is of copper and the other is made of tin. The tin drum is used as a heating surface while the copper drum serves as a cooling surface for removing the heat.
The copper surface is coated with verdius to prevent it from rusting.
The drum is mounted on a wooden frame with an outer diameter of 90 cm and a length of about 140 cm.
The outer surface has a black paint finish and the inner surface has a white paint finish.
A sticker with the name and the mark of origin has been applied to the side of the drum.
The drum has been produced in an ancient Egyptian city of Aswan and the copper drum is in good condition while the tin drum shows signs of age and wear.
Please note: The actual color of the copper surface is a greenish/brownish color due to oxidation of the copper surface as it has been exposed to the environment for a long time.
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Description
The drum is mounted on a wooden frame with an outer diameter of 90 cm and a length of about 140
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