Table of Contents
- 1 What will happen to a dry saturated steam if it undergoes a throttling process?
- 2 What happens when steam is throttled?
- 3 What happens to temperature in throttling process?
- 4 What happens to enthalpy of dry saturated steam with increase in pressure?
- 5 What happens to steam that is initially dry and when throttled reduced to a lower pressure?
What will happen to a dry saturated steam if it undergoes a throttling process?
When dry saturated steam is throttled from a higher pressure to a lower pressure, the. Temperature decreases and the steam becomes superheated.
What happens when steam is throttled?
Throttling of the wet steam is also associated with the conservation of enthalpy. As the pressure drops, some of the liquid in the wet steam vaporizes and increases the vapor quality (i.e., dryness fraction). This process takes place because the saturation temperature is lower at the lower pressure.
What happens to temperature in throttling process?
In the throttling process the down stream pressure is always less than the upstream pressure . Therefore, whenever a real gas is subjected to throttling, the temperature of the gas decreases if the initial state lies in the region to the left of the isenthalpic curve.
What is the dryness fraction of saturated liquid?
The dryness fraction of steam is defined as the ratio of the mass of dry saturated steam to the total mass of wet steam containing it. It is used to quantify the amount of liquid phase (or vapour phase) in the mixture.
Is throttling reversible?
Throttling process is a thermodynamic process which is used to reduce or decrease the pressure of a fluid. In this process a liquid having high pressure is converted into low pressure fluid. So the process can’t be reversible.
What happens to enthalpy of dry saturated steam with increase in pressure?
At atmospheric pressure the saturation temperature is 100°C. However, if the pressure is increased, this will allow the addition of more heat and an increase in temperature without a change of phase. Therefore, increasing the pressure effectively increases both the enthalpy of water, and the saturation temperature.
What happens to steam that is initially dry and when throttled reduced to a lower pressure?
Due to decrease in pressure the dry saturated steam will condense as per standard temperature entropy curve. Now regarding temperature, the system is considered as open volume system so with pressure the temperature will fall.