Homework Answers
Add Answer to:
Problem 4.040 SI Refrigerant 134a enters an air conditioner compressor at 4 bar, 20°C, and is...
Problem 4.041 SI Refrigerant 134a enters an insulated compressor operating at steady state as saturated vapor...
Problem 4.041 SI Refrigerant 134a enters an insulated compressor operating at steady state as saturated vapor at -26°C with a volumetric flow rate of 0.18 m3/s. Refrigerant exits at 9 bar, 70°C. Changes in kinetic and potential energy from inlet to exit can be ignored. Determine the volumetric flow rate at the exit, in m3/s, and the compressor power, in kW.
3. An air-conditioning system is shown in Fig.3, in which air flows over tubes carrying Refrigerant...
3. An air-conditioning system is shown in Fig.3, in which air flows over tubes carrying Refrigerant 134a. Air enters with a volumetric flow rate of 50 m3/min at 32°C, 1 bar, and exits at 22°C, 0.95 bar. Refrigerant enters the tubes at 5 bar with a quality of 20% and exits at 5 bar, 20°C. Ignoring heat transfer at the outer surface of the air conditioner, and neglecting kinetic and potential energy effects, determine at steady state (a) the mass...
Problem 10.008 SI Refrigerant 22 enters the compressor of an ideal vapor-compression refrigeration system as saturated...
Problem 10.008 SI Refrigerant 22 enters the compressor of an ideal vapor-compression refrigeration system as saturated vapor at -30°C with a volumetric flow rate of 5 m/min. The refrigerant leaves the condenser at 19°C, 9 bar. Determine: (a) the magnitude of the compressor power, in kW. (b) the refrigerating capacity, in tons. (c) the coefficient of performance. (d) the rate of entropy production for the cycle, in kW/K. Part A Determine the magnitude of the compressor power, in kW. W....
Problem 12.043 SI Air enters a compressor operating at steady state at 50°C, 0.9 bar, 70%...
Problem 12.043 SI Air enters a compressor operating at steady state at 50°C, 0.9 bar, 70% relative humidity with a volumetric flow rate of 0.8 m3/s. The molst alr exits the compressor at 155°C, 1.5 bar Assuming the compressor is well insulated, determine: (a) the relative humidity at the exit, in percent (b) the magnitude of the power input, in kVW (c) the rate of entropy production, in kW/K
6. Refrigerant-134a enters an adiabatic compressor as saturated vapor at 100 kPa at a rate of...
6. Refrigerant-134a enters an adiabatic compressor as saturated vapor at 100 kPa at a rate of 0.7 m3/min and exits at 1 MPa pressure. If the isentropic efficiency of the compressor is 87%, determine (a) the temperature of the refrigerant at the exit of the compressor, (b) the power input (in kW), and (c) the rate of entropy generation during this process.
(33%) An insulated compressor is used in an air conditioner that uses R-134a as the working fluid...
(33%) An insulated compressor is used in an air conditioner that uses R-134a as the working fluid. The R-134a enters °C. The mass flow rate of the R-134a through the compressor is 0.1 kg/s. Determine the following: the compressor as a saturated vapor at 4 °C and exits at 10 bar, 70 1-a) The compressor inlet pressure in bar 1-b) The compressor work per unit mass in kJ/kg. 1-c) The compressor power requirement in kW.
(33%) An insulated compressor is...
Refrigerant 134a enters a compressor with a mass flow rate of 15 kg/s with a velocity...
Refrigerant 134a enters a compressor with a mass flow rate of 15 kg/s with a velocity of 10 m/s. The refrigerant enters the compressor as a saturated vapor at 10°C and leaves the compressor at 1400 kPa with an enthalpy of 281.39 kJ/kg with a negligible velocity. The rate of work done on the refrigerant is measured to be 380 kW. If the elevation change between the compressor inlet and exit is negligible, determine the rate of heat transfer associated...
QUESTION 3 Refrigerant-134a enters a compressor at 100 kPa and -20°C with flow rate of 1.601...
QUESTION 3 Refrigerant-134a enters a compressor at 100 kPa and -20°C with flow rate of 1.601 m/min and leaves at 800 kPa and 60 °C. Determine the power input of the compressor in kW (Give your answer with three decimals, and do NOT enter units!!!).
An ideal vapor-compression refrigerant cycle operates at steady state with Refrigerant 134a as the working fluid....
An ideal vapor-compression refrigerant cycle operates at steady state with Refrigerant 134a as the working fluid. Saturated vapor enters the compressor at -10°C, and saturated liquid leaves the condenser at 28°C. The mass flow rate of refrigerant is 5 kg/min. Determine (a) The compressor power, in kW (b) The refrigerating capacity, in tons. (c) The coefficient of performance. Sketch the system on a T-s diagram with full label. A vapor-compression heat pump with a heating capacity of 500 kJ/min is...
Problem #2 Refrigerant 134a enters an adiabatic compressor at 0.1 MPa and -20 oC while it...
Problem #2 Refrigerant 134a enters an adiabatic compressor at 0.1 MPa and -20 oC while it leaves at 1 MPa and 110 oC. The mass flow rate of the compressor is 0.3 kg/s. Determine: a) The power input to the compressor, in kW. b) The volume flow rate of the refrigerant at the compressor inlet.
Problem 4.041 SI Refrigerant 134a enters an insulated compressor operating at steady state as saturated vapor at -26°C with a volumetric flow rate of 0.18 m3/s. Refrigerant exits at 9 bar, 70°C. Changes in kinetic and potential energy from inlet to exit can be ignored. Determine the volumetric flow rate at the exit, in m3/s, and the compressor power, in kW.
3. An air-conditioning system is shown in Fig.3, in which air flows over tubes carrying Refrigerant 134a. Air enters with a volumetric flow rate of 50 m3/min at 32°C, 1 bar, and exits at 22°C, 0.95 bar. Refrigerant enters the tubes at 5 bar with a quality of 20% and exits at 5 bar, 20°C. Ignoring heat transfer at the outer surface of the air conditioner, and neglecting kinetic and potential energy effects, determine at steady state (a) the mass...
Problem 10.008 SI Refrigerant 22 enters the compressor of an ideal vapor-compression refrigeration system as saturated vapor at -30°C with a volumetric flow rate of 5 m/min. The refrigerant leaves the condenser at 19°C, 9 bar. Determine: (a) the magnitude of the compressor power, in kW. (b) the refrigerating capacity, in tons. (c) the coefficient of performance. (d) the rate of entropy production for the cycle, in kW/K. Part A Determine the magnitude of the compressor power, in kW. W....
Problem 12.043 SI Air enters a compressor operating at steady state at 50°C, 0.9 bar, 70% relative humidity with a volumetric flow rate of 0.8 m3/s. The molst alr exits the compressor at 155°C, 1.5 bar Assuming the compressor is well insulated, determine: (a) the relative humidity at the exit, in percent (b) the magnitude of the power input, in kVW (c) the rate of entropy production, in kW/K
6. Refrigerant-134a enters an adiabatic compressor as saturated vapor at 100 kPa at a rate of 0.7 m3/min and exits at 1 MPa pressure. If the isentropic efficiency of the compressor is 87%, determine (a) the temperature of the refrigerant at the exit of the compressor, (b) the power input (in kW), and (c) the rate of entropy generation during this process.
(33%) An insulated compressor is used in an air conditioner that uses R-134a as the working fluid. The R-134a enters °C. The mass flow rate of the R-134a through the compressor is 0.1 kg/s. Determine the following: the compressor as a saturated vapor at 4 °C and exits at 10 bar, 70 1-a) The compressor inlet pressure in bar 1-b) The compressor work per unit mass in kJ/kg. 1-c) The compressor power requirement in kW.
(33%) An insulated compressor is...
QUESTION 3 Refrigerant-134a enters a compressor at 100 kPa and -20°C with flow rate of 1.601 m/min and leaves at 800 kPa and 60 °C. Determine the power input of the compressor in kW (Give your answer with three decimals, and do NOT enter units!!!).
An ideal vapor-compression refrigerant cycle operates at steady state with Refrigerant 134a as the working fluid. Saturated vapor enters the compressor at -10°C, and saturated liquid leaves the condenser at 28°C. The mass flow rate of refrigerant is 5 kg/min. Determine (a) The compressor power, in kW (b) The refrigerating capacity, in tons. (c) The coefficient of performance. Sketch the system on a T-s diagram with full label. A vapor-compression heat pump with a heating capacity of 500 kJ/min is...
Most questions answered within 3 hours.
-
30 people are selected randomly from a certain town.
If their mean age is 32.2 and...
asked 1 minute ago -
Consider the following program that reads a number of
nonnegative integers into an array and prints...
asked 39 seconds from now -
A lean manufacturing system basically removes all waste,
including inventory, as much as possible. An ideal...
asked 7 minutes ago -
Write a JAVA program to sort a given array of integers (1
Dimensional) in ascending order...
asked 17 minutes ago -
The table below shows the number of deaths in the U.S. in a year
due to...
asked 37 minutes ago -
The solubility of magnesium phosphate is 2.27 × 10-3 g/1.0 L of
solution. What is the...
asked 55 minutes ago -
Two tugboats pull a disabled supertanker. Each tug exerts a
constant force of 1.20×106 N ,...
asked 48 minutes ago -
In the following concepts of economics provide a
discussion of the meaning as well as the...
asked 24 minutes ago -
Suppose we now care about the long run decisions of a firm that
has a production...
asked 37 minutes ago -
Outline the major trends shaping franchising
asked 55 minutes ago -
. Pendulum Inc. uses moving-average costing. Its 20X8
ending inventory is 900 units that have an...
asked 53 minutes ago -
This is a question about selling :
Abby has been working with a couple for a...
asked 57 minutes ago