|
the most common heat-conveying media in the field of air conditioning and refrigeration systems of air, water and refrigerants. Focuses on the system of pipelines for water supply, pumps and motivation for a water drain in what is often called hydraulic systems. This site also contains recommendations for selecting the size of the refrigerant pipes. Special procedures required for the design of steam and condensate return, but the question will not be considered. Although steam systems are quite common in industrial units, in air conditioning systems, hot water almost completely supplanted steam as heat carrier, transferring to the environment. ....
The requirements of a water-distribution system are that it provide the necessary flow rate to all the heat exchangers, that it be safe, and that its life-cycle cost (including both first and operating costs) be low. In selecting sizes of refrigerant pipes there are some standard recommendations which are heavily influenced by the refrigerant pressure drop. Some pressure drop is expected, but the pipe size should ensure that it will not be excessive, which would result in high operating cost.
This site first compares air and water as media for conveying heat, citing reasons why air would be used in one situation and water in another. Next, water heaters (popularly and incorrectly called boilers) are described and thereafter the other elements of a water-distribution system, including the heat exchangers, pipes, and pumps. Finally, the joint working of these elements is explored in the design of water-distribution systems. |
main