David Milton

For the internal surfaces of pipes and appliances heating biggest problem is their overgrowing of hardness salts. Experimentally determined that the sediment thickness of 1 mm reduce heat loss by 15%. Layer of scale has a large thermal resistance of heat flow, which leads to lower temperature coolant and a decrease in the heat of […]

In recent years, have significantly increased interest in the English language as a means of international communication. He is already recognized as the language of professional communication in various fields, and the emergence of computers has put his use in a special position in comparison with other languages. Now there are so many opportunities for […]