What type of superheater is described as having a steady steam temperature?

The correct choice is the combination superheater, which is designed to maintain a steady steam temperature. This type of superheater achieves this by utilizing a combination of radiant and convective heating methods, which effectively balances the temperature of the steam as it passes through the superheating process.

In a combination superheater, the design allows for a more uniform heat transfer to the steam, minimizing temperature fluctuations that can be caused by varying conditions within the boiler. This stability is crucial in many applications, as it ensures that the steam quality remains consistent, which is essential for efficient energy transfer in power generation and industrial processes.

Options like pendant superheaters and integral superheaters have distinct configurations or operational characteristics that may lead to varying steam temperatures based on load changes or flow rates. Meanwhile, horizontal superheaters primarily refer to the orientation and installation of the superheater rather than its ability to maintain a steady steam temperature, which is best fulfilled by the combination superheater design.