Table of Contents
- 1 How the steam is condensed inside the condenser?
- 2 What happens when steam gets condensed?
- 3 What is the condenser pressure?
- 4 What are the factors on which lowest pressure in the condenser depends?
- 5 When steam condenses what is happening to the heat and water molecules?
- 6 How does pressure affect steam properties?
- 7 What is steam condenser and how does it work?
- 8 What is the pressure of a condenser?
How the steam is condensed inside the condenser?
The fuel is fired in a boiler which converts the heat released from combustion to steam at high pressure and temperature. This steam is then expanded through a turbine for generation of electrical power. Exhaust steam from the turbine is condensed in a heat exchanger and then returned via the feed pumps to the boiler.
Why there is low pressure in condenser?
This lower temperature will cause a lower pressure in the condenser because of the pressure/temperature relationship at saturation. As the condenser sees less and less heat from the compressor because of being starved from the undercharge of refrigerant, the condenser split will decrease.
What happens when steam gets condensed?
When liquid water solidifies it becomes ice.
How steam is condensed?
When water is heated it evaporates, which means it turns into water vapor and expands. At 100℃ it boils, thus rapidly evaporating. And at boiling point, the invisible gas of steam is created. The opposite of evaporation is condensation, which is when water vapor condenses back into tiny droplets of water.
What is the condenser pressure?
The condensing pressure is the pressure at which the refrigerant is phase changing from a vapor to a liquid. This phase change is referred to as condensation. Thus the term condensing pressure.
Is condenser pressure lower than atmospheric pressure?
Detailed Solution. Concept: In a condensing turbine, the pressure in the last stage of the turbine is less than atmospheric pressure, and the condensing turbines are characterized by high-pressure ratios.
What are the factors on which lowest pressure in the condenser depends?
The condenser pressure is dictated by two factors, either of which may be limiting: The condenser performance, which is a function of the thermal duty (amount of steam that must be condensed) and the cooling water flow rate and temperature. The NCG removal system capacity.
What is pressure in condenser?
Condensing pressure: The pressure at which the refrigerant is phase changing from a vapor to a liquid. Evaporating pressure: The pressure at which the refrigerant is phase changing from a liquid to a vapor.
When steam condenses what is happening to the heat and water molecules?
Water in its gaseous state is called water vapor. When water vapor condenses, the molecules cool and change into a liquid state.
How does steam create pressure?
This excess energy raises the pressure, in turn allowing the saturation temperature to rise, as the temperature of saturated steam correlates to its pressure. This is the amount of heat required to change the state of water at its boiling temperature, into steam.
How does pressure affect steam properties?
When water molecules heat up, they attain kinetic energy. The higher the pressure of a boiler the more heat must be applied to make steam. With the increased pressure, you in turn get steam at higher temperatures. Higher temperature steam contains more energy per pound, which is known as Enthalpy.
What happens when condenser pressure increases?
Figure 3.15 shows the effect of increasing condenser inlet pressure on the exergy efficiency and energetic COP of the heat pump cycle. Increasing the outlet temperature from 77 °C to 97 °C causes both the exergy efficiency and the energetic COP of the system to decrease. Figure 3.15.
What is steam condenser and how does it work?
Steam Condenser is a mechanical device that converts the low-pressure exhaust steam from the turbine into water. Or in other words, it is a device that is used to condense exhaust steam of the turbine into water. It does so with the help of cooling water circulated into it from the cooling tower. It works to achieve two main objectives
Why is the pressure in the condenser of a steam turbine low?
In the condenser pressure is low because It helps to suck the steam from the turbine exhaust, The steam comes out from turbine exhaust in the vapor form . Low pressure in condenser helps to suck it effectively Avoids the back pressure on the turbine Rate of steam flow in condenser increases.
What is the pressure of a condenser?
Condensers are almost at a uniform pressure, that of saturation of the wet steam, because velocities are very low, so that friction is very small. The pressure is affected by the circulating pump that extracts condensate, but also by the cooling medium.
What are the principle requirements of a steam condensing plant?
The principle requirements of the steam condensing plant are: 1. Condenser: It is a closed vessel used to condense the steam. The low-pressure steam gives off its heat to the coolant (here water from the cooling tower) and gets converted into the water during the process of condensation.