What is the desirable condition for operation of a boiler with a superheater for maximum economy?

A constant superheat temperature is desirable for the operation of a boiler with a superheater to achieve maximum economy. This stability allows for the efficient production of steam at uniform quality, which is essential for optimal thermal efficiency in power generation or heating applications. When the superheat temperature is maintained consistently, the steam produced has a higher energy content, leading to better efficiency in performing work, such as driving turbines or heating processes.

Maintaining a constant temperature helps to prevent issues related to overheating or underheating, both of which can result in energy losses and increased wear on the boiler components. Stable conditions create an optimal environment for combustion and heat transfer, minimizing fuel consumption while maximizing steam output and system reliability.