Steam at a pressure of 0.08 bar and a quality of 99.0% enters a shell-and-tube heat exchanger where it condenses on the outside oftubes through which cooling water flows, exiting as saturated liquid at 0.08 bar. The mass flow rate of the condensing steam is 5.8 x105 kg/h. Cooling water enters the tubes at 15°C and exits at 35°C with negligible change in pressure.Neglecting stray heat transfer and ignoring kinetic and potential energy effects, determine the mass flow rate of the cooling water, inkg/h, for steady-state operation.mwater = i 568765.92kg/h

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Answered: Steam at a pressure of 0.08 bar and a…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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HMW-1 Regenerative steam power plant shown in figure below employs two feed heaters which are optimally placed such that cycle has the maximum thermal efficiency. The mass of steam generated is 16 kg/s. The feed water leaves each heater as saturated liquid at corresponding bleed pressure. Neglect the pumps work and find: a. Cycle thermal efficiency. b. Specific steam consumption. c. Mechanical efficiency of the turbine-generator gearing unit. Draw the equivalent (T-s) diagram considering an ideal cycle. 70 bar 450°C Gearing unit Generator 15 MW Turbine Super heater Boiler Condenser 0.07 bar Оpen heater Closed heater Pump Pump Throttling Valve
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Q1/ liquid is pumped from a ground 90 elbow 90° For this system: - (Le/d) of globe valve = 240 (Le/d) of 90" elbow = 40 (Le/d) of 45" elbow - 18 h: of Heat Exchanger 1 = 2.2 m of liq. Fof Heat Exchanger 2 = 25 J/kg Pump efficiency elbow level reservoir to an overhead tank H.Ex.2 through a 15 cm ID pipes of e/d = 0.018 as shown in figure: i. What is the pressure developed by the pump to supply water to Tank Globe Valve 45" elbow - 62 % Pump the tank at the rate of 960 45° elbow /min? ii. What is the power required for the pump? Given that: u = 1.6 cP; sp.gr 0.86; and the lengths as follow; L = 33 m, L2 = 17 m, L3 = 8 m, L4 = 35 m Reservair H.Ex.1
A spring-loaded piston-cylinder device contains 1.5 kg of carbon dioxide. This system is heated from 200 kPa and 25 °C to 1200 kPa and 300°C. Determine the total heat transfer to and work produced by this system.
a constant pressure container (inside the piston-cylinder) with 250 kPa pressureat the beginning the mass of the saturated water vapor was 8 kg. Then the saturated steam in the cylinder compressed to 3/4 of its mass vy cooling.1) what's the amount of heat transferred to the environment.
A steam turbine is to operate on a simple regenerative cycle. Steam is supplied dry saturated at 40 bar, and is exhausted to a condenser at 0.07 bar. The condensate is pumped to a pressure of 3.5 bar at which it is mixed with bleed steam from the turbine at 3.5 bar. The resulting water which is at saturation temperature is then pumped to the boiler. For the ideal cycle sketch the process on the T-s diagram and calculate, neglecting feed pump work,The amount of bleed steam required per kg of supply steamThe thermal efficiency of the plantThe specific steam consumption
1. A Rankine cycle with reheating has a throttle pressure of 135 bars at the turbine inlet and 28 bars reheat pressure, the throttle and reheat temperature of the steam is 550C, condenser pressure is 0.035 bar, mass flow rate of steam is 10 kg/sec. Draw the T-s and schematic diagram of the cycle and determine the following: (c) theoretical thermal efficiency (d) the steam rate (e) heat rate of the cycle
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An insulated piston-cylinder device contains 4 L of saturated liquid water at a constant pressure of 200 kPa. Water is stirred by a paddle wheel while a current of 8A flows for 50 min through a resistor placed in the water. If one-half of the liquid is evaporated during this constant-pressure process and the paddle-wheel work amounts to 300 kJ, determine the voltage of the source. Also, show the process on a P-v diagram with respect to the saturation lines.
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A constant-area duct that is 20 cm in length by 2 cm in diameter is connected to a reservoir through a converging nozzle, as shown in Figure 9.13. For a reservoir pressure and tem- perature of 1 MPa and 500 K, determine the maximum air flow rate in kilograms per sec- ond through the system and the range of back pressures over which this flow is realized. Repeat these calculations for a converging nozzle with no duct. Assume that fis equal to 0.032 and that y - 1.4. f= 0.032 D-2 cm Isentropic flow P1,000 kPa I 500 K 20 cm

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