A feedwater heater is a power plant component used to pre-heat water delivered to a steam generating boiler.[1][2][3] Preheating the feedwater reduces the irreversibilities involved in steam generation and therefore improves the thermodynamic efficiency of the system.[4] This reduces plant operating costs and also helps to avoid thermal shock ...

This is called "direct-contact heating". The Regenerative Rankine cycle (with minor variants) is commonly used in real power stations. Another variation sends bleed steam from between turbine stages to feedwater heaters to preheat the water on its way from the condenser to the boiler. These heaters do not mix the input steam and condensate ...

A steam power plant operates on an ideal reheat– regenerative Rankine cycle with one reheater and two feedwater heaters, one open and one closed. Steam enters the high-pressure turbine at 15 MPa and 600°C and the low-pressure turbine at 1 MPa and 500°C. The condenser pressure is 5 kPa.

Example of Rankine Cycle – Problem with Solution Let assume the Rankine cycle , which is the one of most common thermodynamic cycles in thermal power plants. In this case assume a simple cycle without reheat and without with condensing steam turbine running on saturated steam (dry steam).

Conservation of energy for the open feedwater heater: Example 10-3 An ideal regenerative steam power cycle operates so that steam enters the turbine at 3 MPa, 500oC, and exhausts at 10 kPa. A single open feedwater heater is used and operates at 0.5 MPa. … Fetch Content

Question: Consider a steam power plant that operates on a regenerative Rankine cycle and has a net power output of 150 MW. Steam enters the turbine at 10 MPa and 500 C and the condenser at 10 kPa.

Today, the Rankine cycle is the fundamental operating cycle of all thermal power plants where an operating fluid is continuously evaporated and condensed. It is the one of most common thermodynamic cycles, because in most of the places in the world the turbine is steam-driven.. In contrast to Carnot cycle, the Rankine cycle does not execute isothermal processes, because these must be performed ...

2010-11-30 · 4. A steam power plant operates on an ideal regenerative Rankine cycle. Steam enters the turbine at 6 MPa and 450oC and is condensed in the condenser at 20 kPa. Steam is extracted from the turbine at 0.4 MPa to heat the feedwater in an open feedwater heater. Water leaves the feedwater heater as a saturated liquid. Get A Quote