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Why steam is to be condensed in thermal power plant Y should not you use a compressor to suck compress and send back the steam at high pressure?
Wiki User
∙ 11y ago
It's a matter of the steam cycle, the condenser in a condensing power plant creates a vacuum, or low pressure zone for the steam to flow into. A compressor would need to compress this steam 650 times plus generate enough force to force it back into the boiler, this would require a lot of energy to do. It is much simpler and much more cost effective (energy wise), to condense the steam and exhaust the excess heat to the cooling tower. The condensed water can then be pumped back to the boiler in stages to repeat the cycle. In these stages the water is de-aerated, treated and heated back to the boiler's temperature to prevent thermal shock in the boiler. In short condensing the steam is easier, safer and cheaper than trying to mechanically compress it.
**By the way, there are vacuum pumps called "hoggers" or steam powered ejectors, and injectors which could do just what you suggest, but use exorbitant amounts of energy to do so. These are typically used in conjunction with condensers to eject non-condensible gasses from condensers.
Wiki User
∙ 11y ago
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In thermal power generation part the steam came from turbine condensed and again resend to steam conversionIn this part my doubt is why return steam need to be cooled?
The low pressure steam from the last stage of the steam turbine is condensed so that it can be pumped back to the steam raising units at high pressure, as water. You can't compress steam as it would condense in the compressor. The only way to use steam as a gas in a gas turbine would be if it was supercritical, but this would mean operating at temperatures well above the limits for most engineering materials, and steam at these conditions would be very corrosive. This type of reactor cycle using a gas turbine has been considered using helium as the working fluid, and it may be built as the "pebble bed" reactor, or it may not. I think you need to understand more of thermodynamics. Read the Wikipedia entry for the "Rankine Cycle", see link below
What energy does the steam engine use?
steam engine uses thermal energy to convert water into steam and then uses pressure of steam to move the engine .thus thermal energy into pressure and further pressure into mechanical energy.
What is the working principle of the drink dispenser?
It operates over a thermal cycle where a gas (like freon) is passed through a compressor and thus becomes hot.This gas then condeses to a liquid as it heats the water container.The condensed liquid again passes through an evapourator and becomes gas again & comes to the compressor to start the process again.
What is the effect or reheater in the gas turbine?
1.Turbine output is increased for same compressor work. 2.As more heat is supplied,thermal efficiency decreases.
Why is over-pressurizing an Air Conditioning system bad?
Overcharging a refrigeration or air conditioning system can result in an explosion. To avoid serious injury or death, never overcharge the system. Always use proper charging techniques. Limit charge amounts to those specified on the system equipment serial label or in the original equipment manufacturer's service information. Overcharging the system immerses the compressor motor, piston, connecting rods, and cylinders in liquid refrigerant. This creates a hydraulic block preventing the compressor from starting. The hydraulic block is also known as locked rotor. Continued supply of electricity to the system causes heat to build in the compressor. This heat will eventually vaporize the refrigerant and rapidly increase system pressure. If, for any reason, the thermal protector fails to open the electrical circuit, system pressure can rise to high enough levels to cause a compressor housing explosion. Overcharging a refrigeration or air conditioning system can result in an explosion. To avoid serious injury or death, never overcharge the system. Always use proper charging techniques. Limit charge amounts to those specified on the system equipment serial label or in the original equipment manufacturer's service information. Overcharging the system immerses the compressor motor, piston, connecting rods, and cylinders in liquid refrigerant. This creates a hydraulic block preventing the compressor from starting. The hydraulic block is also known as locked rotor. Continued supply of electricity to the system causes heat to build in the compressor. This heat will eventually vaporize the refrigerant and rapidly increase system pressure. If, for any reason, the thermal protector fails to open the electrical circuit, system pressure can rise to high enough levels to cause a compressor housing explosion.
What part of refrigeration system changes the high pressure side to the low pressure side?
There are two parts which do. The first is the compressor - the high side starts at the compressor outlet. The other is the metering device (either a Thermal Expansion Valve or a Fixed Orifice Tube). The high pressure high ends at the metering device inlet. The low pressure side starts at the metering device outlet and ends at the compressor inlet.
What makes matter change forms?
Any type of reaction, really. You could add heat or remove heat (thermal energy) to cause the matter to change phase. Also pressure can compress the matter into a new form.
In thermal power generation part the steam came from turbine condensed and again resend to steam conversionIn this part my doubt is why return steam need to be cooled?
The low pressure steam from the last stage of the steam turbine is condensed so that it can be pumped back to the steam raising units at high pressure, as water. You can't compress steam as it would condense in the compressor. The only way to use steam as a gas in a gas turbine would be if it was supercritical, but this would mean operating at temperatures well above the limits for most engineering materials, and steam at these conditions would be very corrosive. This type of reactor cycle using a gas turbine has been considered using helium as the working fluid, and it may be built as the "pebble bed" reactor, or it may not. I think you need to understand more of thermodynamics. Read the Wikipedia entry for the "Rankine Cycle", see link below
Is it safe to use the unit even if your compressor is over heat?
Compressors have a thermal overload built inside that will shut down the compressor if the conditions are critical.
Thermal energy is energy stored by things that stretch or compress?
Thermal energy is not the energy stored by things that stretch or compress. This type of energy applies to strain potential energy. Thermal energy refers to motion energy due to the random vibration of atoms or molecules within an object.
Is there a thermal limit switch for 2006 econoline van air conditioner?
Usually mounted on the compressor.
What are the thermal parameters?
the basic thermal parameter are pressure(P), volume(V), and temprature(T).
What the pressure of steam on the turbine blade in any thermal plant?
Its not possible the same pressure in every thermal pp turbines very Pressure each capacity of turbine according to design.kachin panchal
What is a TXV valve?
Thermal Expansion Valve is a type of metering device which is one of the separation points between the high and low pressure sides of an air conditioning system (the other being the compressor). It depressurises the liquid refrigerant which passes through it, ensuring that low pressure liquid refrigerant is passed on to the evaporator.
What is in a refrigerator that makes cold?
A fridge works by absorbing the thermal energy (heat) out of the things you put in it and a compressor pushes the thermal energy from the food through a tube into the air outside of it.
Which side of the ac is the high side on a Chevy Venture?
You'll see two lines coming in and out of the compressor. One will be larger than the other. The compressor splits the low pressure side from the high pressure side. The smaller line will be at the compressor outlet, and that's where the high side of the system begins. From the compressor, the line will go to the condenser. Where the line goes next depends on what type of system you have. If you have a Thermal Expansion Valve (TXV) system, it will go to the receiver-drier. If you have a Fixed Orifice Tube (FOT) system, it will go directly to the FOT from the condenser outlet. On a TXV system, the line will go from the receiver-drier outlet to the TXV inlet. The TXV and FOT are both metering devices which separate the high and low pressure side of the system. The high pressure side ends at the metering device inlet, and the low pressure side begins at the metering device outlet.
How does thermal energy contribute to condensation?
lack of thermal energy or excess pressure (or both) will contribute to condensation.
