A fluid enters an apparatus at 480 ft/s, initially the pressure of the fluid is 120 psia, the specific volume of 5ft3/lb and the internal energy is 383 BTU/lb. The fluid leaves the apparatus at 25psia, specific volume of 18 ft3/lb, an exit velocity of 1200 ft/s and internal energy of 120 BTU/lb. The heat radiation

A fluid enters an apparatus at 480 ft/s, initially the pressure of the fluid is 120 psia, the specific volume of 5ft3/lb and the internal energy is 383 BTU/lb. The fluid leaves the apparatus at 25psia, specific volume of 18 ft3/lb, an exit velocity of 1200 ft/s and internal energy of 120 BTU/lb. The heat radiation

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter2: Steady Heat Conduction

Section: Chapter Questions

Problem 2.39P: The tip of a soldering iron consists of a 0.6-cm- diameter copper rod, 7.6 cm long. If the tip must...

See similar textbooks

Similar questions

A fluid enters a steady-flow system at a rate of 2.5 kg/s with an initial pressure of 0.70 MPa, density of 3.2 kg/m3, velocity of 30 m/s and internal energy of 1860 kJ/kg and leaves with a pressure of 0.14 MPa, density of 0.8 kg/m3, velocity of 150 m/s and internal energy of 1810 kJ/kg. During passage through the open system, each kg rejects 25 kJ of heat. Find the shaft work involve in horsepower.1 hp = 746 WAns. 194.2 hp
A turbine with an inlet area of 150 cm² receives a steam with a speed of 60 m/s, inlet pressure of 10,00 kPa, and inlet temp of 550 C. Steam leaves in an exit area of 1400 cm² at 25,000 Pa with a quality of 95% and a heat loss of 30,000 J/kg. Determine (a) mass flow rate of the steam (b) exit velocity (c) power output, kW.
A turbine operating under steady-flow condition receives steam at the following state: pressure,13.8bar; specific volume 0143 m3 /kg, and velocity 30m/s. The state of the steam leaving the turbine is as follow: pressure 0.35 bar, specific volume 4.37 m3/kg and velocity 90 m/s. The difference in elevation is negligible. Heat is rejected to the surrounding at the rate of 0.25 kW, the turbine develops 103kW of power and the rate of steam flow through the turbine is 0.5 kg/s. Calculate the change in internal energy of the steam
Steam flows through a turbine at a rate of 2.3 kg/s, at 3.2 MPa and 480°C with a velocity of 85 m/s and an elevation of 7.5 m. The heat transfer from the turbine is 15.5 kW. It leaves the turbine at 180 m/s as a saturated vapor at 0.25 MPa with an elevation of 3.4 m. Determine the power output of the turbine in HP?
In a natural gas pipeline compressor, 110 m3/min. propane is compressed polytropically. The inlet pressure is 101 kPaa and the temperature is 38 0 The process follows pV1.08 = C. The exit pressure is 510 kPaa. Determine (a) the exit temperature, (b) the mass flow rate, (c) the heat loss, and (d) the work required.
Q19: A stationary mass of gas is compressed without friction from an initial state of 2 m3 and 2*105 N/m2 to a final state of 1 m3 and 2*105 N/m2 , the pressure remaining the same. There is a transfer of 360 kJ of heat from the gas during the a process. How much does the internal energy of the gas change
A Steam is supplied to a turbine at 407.1 inHg (abs) with the following initial conditions: u = 1163.3 Btu/lb, density = 0.3774 lb/ft^3 and intake velocity of 400 fps. Exhaust conditions are at 2 inHg (abs) and u = 925 Btu/lb, specific volume = 294 ft^3/lb and exit velocity of 335.26 mps. The heat loss form the steam in the turbine is 10 Btu/lb. Determine the work in hp for 10 lb/min of steam
A steady state flow compressor draws in 14170 li/min of air whose density is 1.267 kg/m3 and discharge it with density of 4.88 kg/m3. At the suction, P1-103.42 kPa, at the discharge, p2=551.584 kPa. Thge increase in specific internal energy is 78.45 kJ/kg and the heat from air by cooling is 30.173 kJ/kg. Neglecting the change of potential and kinetic energy, determine the work done on the system in kJ/min.
A reciprocating compressor draws in 500 cubic feet per minute of air whose density is 0.079 lb/cu.ft and discharges it with a density of 0.304 lb/cu.ft. At the suction, p1= 15 psia; at discharge, p2= 80 psia. The increase in the specific internal energy is 33.8 Btu/lb and the heat transferred from the air by cooling is 13 Btu/lb. Determine the work on the air in Btu/min and in hp. Neglect change in kinetic energy.
A compressor draws in 0.25 m% of air whose density is 1.26 kg/m? and discharges it with a density of 4.87 kg/m°. At the suction, P, = 103.4 kPaa; at the discharge, P2 = 551.4 kPaa. The increase in the specific internal energy is 78.63 kJ/kg, and the heat from the air by cooling is 30.24 kJ/kg. Neglecting changes of potential and kinetic energy, determine the work on air in kW, BTU/min, and Hp.
A steady - state steady flow thermodynamics system receives 100 lb/min of a fluid at 30 psia and 200°F and discharges it from a point 80 ft above the entrance section at 150 psia and 600°F. The fluid enters with a velocity of 2400 fpm. During the process, there are supplied 25000 Btu/hr of heat from an external source and the increase in the enthalpy is 2 btu/lb. Determine the work done in horsepower.
Cold water at 10°C enters a water heater at the rate of 0.02 m3 /min and leaves the water heater at 50°C. The water heater receives heat from a heat pump that receives heat from a heat source at 0°C. Assuming the water heater acts as a heat sink having an average temperature of 30°C, determine the minimum power supplied to the heat pump, in kW.