A fluid with a specific heat of 2.0 kJ/kg. 0C enters an adiabatic piping system at...
A fluid with a specific heat of 2.0 kJ/kg. 0C enters an adiabatic piping system at 30 0at a rate of 2.1 kg/s. If the water temperature rises by 0.8 0C during flow due to friction, what is the rate of entropy generation in the pipe in W/K?
Be sure to enter your answer in W/K, not in kW/K
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A fluid with a specific heat of 2.0 kJ/kg. 0C enters
an adiabatic piping system at...
A vapor compression refrigeration cycle utilizes R-134a as the working fluid. The refrigerant flow rate is 50 g/s. Vapor at 150 kPa and -10 0C enters the compressor and leaves at 1.2 MPa and 75 0C. Th...
A vapor compression refrigeration cycle utilizes R-134a as the working fluid. The refrigerant flow rate is 50 g/s. Vapor at 150 kPa and -10 0C enters the compressor and leaves at 1.2 MPa and 75 0C. The power input to the non-adiabatic compressor is measured and found to be 2.4 kW. The refrigerant enters the expansion valve at 1.15 MPa and 40 0C and leaves the evaporator at 160 kPa and -15 0C. Determine the entropy generation in the compression...
NO INTERPOLATION REQUIRED Air enters an adiabatic turbine at 1000 kPa and 1625 degrees C (state...
NO INTERPOLATION REQUIRED Air enters an adiabatic turbine at 1000 kPa and 1625 degrees C (state 1) with a mass flow rate of 5 kg/s and leaves at 100 kPa the isentropic efficiency of the turbine is 85%. Neglecting the kinetic energy change of the steam, and considering variable specific heats, determine: a. the isentropic power of the turbine Isentropic power in kW b. the temperature at the turbine exit temperature at exit in degrees C c. the actual power...
Steam enters a horizontal pipe operating at steady state with a specific enthalpy of 1,671 kJ/kg...
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A) Steam enters a horizontal pipe operating at steady state with a specific enthalpy of 2,663 kJ/...
A) Steam enters a horizontal pipe operating at steady state with a specific enthalpy of 2,663 kJ/kg and a mass flow rate of 0.1 kg/s. At the exit, the specific enthalpy is 1,531 kJ/kg. If there is no significant change in kinetic energy from inlet to exit, determine the rate of heat transfer between the pipe and its surroundings, in kW. B) Refrigerant 134a enters a horizontal pipe operating at steady state at 40°C, 3.1 bar and a velocity of...
Water is the working fluid in a Rankine cycle. Superheated vapor enters the turbine at 10...
Water is the working fluid in a Rankine cycle. Superheated vapor enters the turbine at 10 Mpa, 560 C with a mass flow rate of 7.8kg/s and exits at 8 kPa. Saturated liquid enters the pump at 8 kPa. The isentropic turbine efficiency is 85%, and the isentropic pump efficiency is 85%. Cooling water enters the adiabatic condenser at 18 C and exits at 36 C with no significant change in pressure and assuming the specific heat of the cooling...
Twenty [kw] of heat is to be removed from 375 [k] water flowing at 0.15 [kg/s] into the inner pipe of concentric tube heat exchanger. Cooling water enters the annulus at 290 [k] and leaves at 320...
Twenty [kw] of heat is to be removed from 375 [k] water flowing at 0.15 [kg/s] into the inner pipe of concentric tube heat exchanger. Cooling water enters the annulus at 290 [k] and leaves at 320 [k] with a flow in the opposite direction of the inner flow. The diameter of the thin- walled inner pipe is 2.5 [cm] a) b) c) Calculate the exit temperature of the hot fluid and the mass flow rate of the cold fluid...
In a counter flow double pipe heat exchanger water is heated from 25^0C to 75^0C by...
In a counter flow double pipe heat exchanger water is heated from 25^0C to 75^0C by oil with specific heat of 1.44KJ/KgK and mass flow rate of 0.81 kg/s.The oil is cooled from 240^0C to 150^0C.If the overall heat exchanger coefficient is 470W/m^2 0C.Calculate; 1.The rate flow of heat transfer 2.Sketch temperature distribution diagram 3.The mass flow rate of water 4.The surface area of the heat exchanger
A hot fluid of specific heat 4100 J/kg K flows through a parallel flow heat exchanger...
A hot fluid of specific heat 4100 J/kg K flows through a parallel flow heat exchanger at the rate of 3.5 kg/min with an inlet temp. of 105C. A cold fluid of specific heat 2350 J/kg K flows in at a rate of 9 kg/min and with inlet temperature 25C. Make calculations for maximum possible effectiveness if the fluid flow conforms to parallel * .flow arrangement 0.596 0.458 .321 0.825 O
5-30 Air enters an adiabatic nozzle steadily at 300 kPa, 200°C, and 30 m/s and leaves...
5-30 Air enters an adiabatic nozzle steadily at 300 kPa, 200°C, and 30 m/s and leaves at 100 kPa and 180 m/s. The inlet area of the nozzle is 80 cm². Determine (a) the mass flow rate through the nozzle, (b) the exit temperature of the air, and (c) the exit area of the nozzle. Answers: (a) 0.5304 kg/s, (b) 184.6°C, (c) 38.7 cm P = 300 kPa T, = 200°C Vi = 30 m/s A = 80 cm AIR...
Consider steady flow of steam through a horizontal pipe at a rate of 0.5 kg/s: Steam...
Consider steady flow of steam through a horizontal pipe at a rate of 0.5 kg/s: Steam enters the pipe as a saturated vapor at 0.5 MPa with a velocity of 12 m/s and exits at 0.45 MPa with a quality of 95% and a velocity of 10.5 m/s. Heat transfer from the pipe to the surroundings, which is at 300 K. takes place at an average outer surface temperature of the pipe) of 400 K. Saturated vapor 0.5 MPa 12...
Twenty [kw] of heat is to be removed from 375 [k] water flowing at 0.15 [kg/s] into the inner pipe of concentric tube heat exchanger. Cooling water enters the annulus at 290 [k] and leaves at 320 [k] with a flow in the opposite direction of the inner flow. The diameter of the thin- walled inner pipe is 2.5 [cm] a) b) c) Calculate the exit temperature of the hot fluid and the mass flow rate of the cold fluid...
A hot fluid of specific heat 4100 J/kg K flows through a parallel flow heat exchanger at the rate of 3.5 kg/min with an inlet temp. of 105C. A cold fluid of specific heat 2350 J/kg K flows in at a rate of 9 kg/min and with inlet temperature 25C. Make calculations for maximum possible effectiveness if the fluid flow conforms to parallel * .flow arrangement 0.596 0.458 .321 0.825 O
5-30 Air enters an adiabatic nozzle steadily at 300 kPa, 200°C, and 30 m/s and leaves at 100 kPa and 180 m/s. The inlet area of the nozzle is 80 cm². Determine (a) the mass flow rate through the nozzle, (b) the exit temperature of the air, and (c) the exit area of the nozzle. Answers: (a) 0.5304 kg/s, (b) 184.6°C, (c) 38.7 cm P = 300 kPa T, = 200°C Vi = 30 m/s A = 80 cm AIR...
Consider steady flow of steam through a horizontal pipe at a rate of 0.5 kg/s: Steam enters the pipe as a saturated vapor at 0.5 MPa with a velocity of 12 m/s and exits at 0.45 MPa with a quality of 95% and a velocity of 10.5 m/s. Heat transfer from the pipe to the surroundings, which is at 300 K. takes place at an average outer surface temperature of the pipe) of 400 K. Saturated vapor 0.5 MPa 12...
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