Table of Contents
How does a reheater work?
Reheat is the addition of heat to previously cooled air. Reheat is used sometimes for humidity control, and sometimes for occupant comfort. Then the reheat coil activates and the incoming cool air is reheated to maintain the setpoint.
What is the role of the reheater in a gas turbine?
In gas turbine, what is the function of Re-heater? Explanation: In order to make a thermodynamic process of larger efficiency, it is shifted towards isothermal behavior. Then, it is again heated to the final temperature thereby increasing the efficiency of the cycle.
What is the purpose of intercooler in gas turbine power plant?
The addition of intercoolers in gas turbine cycles reduces the compression work, and this is achieved by dividing the compression processes into two or more stages, and the exit air/gas from each stage is cooled by the intercooler/heat exchanger to the minimum cycle temperature.
How does VAV reheat work?
Typical VAV with Reheat System The supply air temperature is held constant at 55°F. When a zone falls below its set point, the damper closes and reheat is enabled. When a zone is above its set point, the damper opens fully to allow as much 55°F air as possible into the zone to cool the space quickly.
What is the location of reheater in gas turbine?
The superheaters and reheaters (refer to Fig. 4.4 for typical locations) are tube bundles located in the flue gas stream that increase the temperature of the saturated steam, which is produced in the furnace waterwalls.
How do intercoolers work?
How does an intercooler work? Turbochargers work by compressing air, increasing its density before it reaches the cylinders of the engine. The intercooler works to counteract this process, cooling the compressed air to provide the engine with more oxygen, and improving the combustion in each cylinder.
Will an intercooler give more power?
It also makes the compressed air denser as it enters the intake manifold, which causes a richer air-to-fuel mix in the engine’s cylinders. The result is increased power output. So, the answer to the question is yes! An intercooler does help to increase horsepower.
How does a gas oil plant cause the turbine to spin?
All natural gas plants use a gas turbine; natural gas is added, along with a stream of air, which combusts and expands through this turbine causing a generator to spin a magnet, making electricity.
How with the incorporation of reheater in thermal power plant the efficiency of the plant can be enhanced analyze using Rankine Cycle?
net work in power cycle = heat delivered – heat extracted. Thus the work produced is increased ,thereby efficiency increases. By increasing the number of reheats, high steam pressures can be achieved but the mechanical stresses at higher rate than that of pressure, due to prevailing high temperature.
What is reheat gas turbine?
Reheat gas turbine cycle arrangement is shown in figure. In order to maximize the work available from the simple gas turbine cycle one of the option is to increase enthalpy of fluid entering gas turbine and extend its expansion upto the lowest possible enthalpy value.
How does a gas turbine work?
Procedure starts with the introduction of gasses at high temperature and high pressure into the turbine section having number of blades. Blades absorb power form gasses and after that gasses are eliminated from that section of gas turbine.
What is rereheat and how does it work?
Reheat not only effectively reduced the penalty of the latent heat of vaporization in steam discharged from the low-pressure end of the turbine cycle, but it also improved the quality of the steam at the low-pressure end of the turbines by reducing condensation and the formation of water droplets within the turbine.
What happens to steam when it is heated in a turbine?
The steam expands in the high-pressure turbine to some intermediate pressure, then passes back to the boiler, where it is reheated at constant pressure to a temperature that is usually equal to the original superheat temperature. This reheated steam is directed to the low-pressure turbine, where is expanded until the condenser pressure is reached.