Märkähöyryn

Märkähöyryn is a Finnish term that translates to "wet steam" in English. It refers to a mixture of steam and liquid water that occurs when water is heated to its boiling point but has not yet fully vaporized. In this state, the steam is saturated and in direct contact with its liquid phase.

The temperature of wet steam is constant at its boiling point for a given pressure. Its enthalpy, or heat content, is a function of both the temperature and the proportion of liquid water present, known as the quality of the steam. A steam quality of 0 indicates all water, while a quality of 1 signifies dry, saturated steam.

Wet steam is commonly encountered in various industrial processes, such as in boilers, turbines, and heat exchangers. Its presence can affect the efficiency and performance of these systems. For instance, in steam turbines, the presence of liquid water droplets in wet steam can cause erosion and reduce the turbine's overall power output. Therefore, managing and controlling the quality of steam is crucial in many engineering applications.