Question

QUESTION 3 [26] In the steam cycle shown below, the steam leaves the boiler at a pressure of 1.6-MPa and 300°C and expands isentropically to a pressure of 7-kPa in a turbine. It is then condensed at this pressure and passes without undercooling to the hot well. Five percent of the steam flow is extracted from the turbine when the pressure is 200-kPa and is used to heat the feed water on its way from the hot well to the boiler. This steam is condensed in the feed water heater at the extraction pressure and is then fed to the hot well without undercooling. The mixing of the condensates in the hot well determines the hot well temperature. Draw the process on a T-s diagram and determine: 3.1 The temperature of the steam at the turbine exhaust and at entry to the feed water. 3.2 The temperature in the hot well and the temperature of the feed water leaving the heater. 3.3 The turbine output per kg of steam leaving the boiler. 3.4 The heat supplied by the boiler and the heat extracted by the condenser per kg of steam leaving the boiler. (8) (9) (4) (5) Boiler Turbine Condenser Feed Water Heater Hot Well 1 2 3 4 5 6 7

          QUESTION 3
[26]
In the steam cycle shown below, the steam leaves the boiler at a pressure of 1.6-MPa and 300°C and expands isentropically to a pressure of 7-kPa in a turbine. It is then condensed at this pressure and passes without undercooling to the hot well. Five percent of the steam flow is extracted from the turbine when the pressure is 200-kPa and is used to heat the feed water on its way from the hot well to the boiler. This steam is condensed in the feed water heater at the extraction pressure and is then fed to the hot well without undercooling. The mixing of the condensates in the hot well determines the hot well temperature. Draw the process on a T-s diagram and determine:
3.1 The temperature of the steam at the turbine exhaust and at entry to the feed water.
3.2 The temperature in the hot well and the temperature of the feed water leaving the heater.
3.3 The turbine output per kg of steam leaving the boiler.
3.4 The heat supplied by the boiler and the heat extracted by the condenser per kg of steam leaving the boiler.
(8)
(9)
(4)
(5)
Boiler
Turbine
Condenser
Feed Water Heater
Hot Well
1
2
3
4
5
6
7

question 3 26 in the steam cycle shown below the steam leaves the boiler at a pressure of 16 mpa and 300c and expands isentropically to a pressure of 7 kpa in a turbine it is then condensed 02697

Added by Cheryl R.

Question

Please give Ace some feedback