Produced water is chemically very complex. The process of producing and processing produced water causes changes in temperature and pressure. The addition of treating chemicals, along with the presence of coproduced gas, oil, and likely solids, changes the produced-water properties and behavior.
Many times, relative humidity can be misleading. For example, a temperature of 30 and a dew point of 30 will give you a relative humidity of 100%, but a temperature of 80 and a dew point of 60 produces a relative humidity of 50%. It would feel much more humid on the 80 degree day with 50% relative humidity than on the 30 degree day with a 100% relative humidity.
The new definition says absolute humidity is the mass of the water vapor in a volume divided by the mass of dry air in the said volume. This definition is much convenient when dealing with pressure changes. However, to avoid confusion, the first definition is renamed as the volumetric humidity. Relative Humidity. Relative humidity is important when the real effect of the humidity is concerned. To understand the concept of relative humidity, there are two concepts that are needed to be addressed first. First one is the partial pressure.