Homework Answers
Add Answer to:
QUESTION 3 Refrigerant-134a enters a compressor at 100 kPa and -20°C with flow rate of 1.601...
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.
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...
First part is really the important one Problem 1. Refrigerant-134a enters a compressor at 180 kPa...
First part is really the important one
Problem 1. Refrigerant-134a enters a compressor at 180 kPa as saturated vapor with a flow rate of 0.35 m/min and leaves at 700 kPa. The power supplied to the refrigerant during the compression process is 2.35 kW. Start from the general form of the energy equation and simplify it for this problem. Note: term. The final answer is an equation with no numbers. Calculate the temperature of R-134a at the exit of the...
3) A vapor-compression refrigerator uses refrigerant-134a. Superheated vapor enters the compressor at 100 kPa and -20°...
3) A vapor-compression refrigerator uses refrigerant-134a. Superheated vapor enters the compressor at 100 kPa and -20° C, and exits at 1 MPa and 60° C. The refrigerant is cooled to 35° C in the condenser and then expands back to 100 kPa through an expansion valve. Neglect pressure losses within the condenser and evaporator. The refrigerant flow rate is 0.10 kg/s. Calculate the following a) the rate of heat removal from the cooled space, in kw, b) the rate of...
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.
1 MPa Isentropic Efficiency of a Compressor Refrigerant-134a enters an adiabatic compressor as a saturated vapor...
1 MPa Isentropic Efficiency of a Compressor Refrigerant-134a enters an adiabatic compressor as a saturated vapor at 100kPa at a rate of 0.7 m/min and exits at 1-MPa pressure. The isentropic efficiency of the compressor is 87%. R-134a Compressor Isentropic Compressor Work hs-h 100 kPa sat. vapor Actual Compressor Work Determine the refrigerant properties at the inlet and outlet for an isentropic process. Actual 2s entropic procEss Inlet state Determine the actual isentropic enthalpy from the efficiency. (Ans: 289.71 J/kg)...
Refrigerant-134a enters the condenser of a residential heat pump at 800 kPa and 35°C at a...
Refrigerant-134a enters the condenser of a residential heat pump at 800 kPa and 35°C at a rate of 0.018 kg/s and leaves at 800 kPa as a saturated liquid. If the compressor consumes 1.2 kW of power, determine (a) the COP of the heat pump and (b) the rate of heat absorption from the outside air.
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...
A commercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at by The refrigerant enters the condenser at compressor consumes 3.3 kW of power, dete...
A commercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at by The refrigerant enters the condenser at compressor consumes 3.3 kW of power, determine (a) the mass flow rate of the refrigerant, (b) the refrigeration load, (e) the COP, and (d) the g waste heat to cooling water that enters the condenser at 18°C at a rate of 0.25 kg/s and leaves at 26°C. 1.2 MPa and 50°C and leaves at the same...
Problem 4.040 SI Refrigerant 134a enters an air conditioner compressor at 4 bar, 20°C, and is...
Problem 4.040 SI Refrigerant 134a enters an air conditioner compressor at 4 bar, 20°C, and is compressed at steady state to 12 bar, 80°C. The volumetric flow rate of the refrigerant entering is 8.5 m3/min. The work input to the compressor is 127.5 kJ per kg of refrigerant flowing Neglecting kinetic and potential energy effects, determine the magnitude of the heat transfer rate from the compressor, in kw kW the tolerance is +/-596 Click if you would like to Show...
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.
First part is really the important one
Problem 1. Refrigerant-134a enters a compressor at 180 kPa as saturated vapor with a flow rate of 0.35 m/min and leaves at 700 kPa. The power supplied to the refrigerant during the compression process is 2.35 kW. Start from the general form of the energy equation and simplify it for this problem. Note: term. The final answer is an equation with no numbers. Calculate the temperature of R-134a at the exit of the...
3) A vapor-compression refrigerator uses refrigerant-134a. Superheated vapor enters the compressor at 100 kPa and -20° C, and exits at 1 MPa and 60° C. The refrigerant is cooled to 35° C in the condenser and then expands back to 100 kPa through an expansion valve. Neglect pressure losses within the condenser and evaporator. The refrigerant flow rate is 0.10 kg/s. Calculate the following a) the rate of heat removal from the cooled space, in kw, b) the rate of...
1 MPa Isentropic Efficiency of a Compressor Refrigerant-134a enters an adiabatic compressor as a saturated vapor at 100kPa at a rate of 0.7 m/min and exits at 1-MPa pressure. The isentropic efficiency of the compressor is 87%. R-134a Compressor Isentropic Compressor Work hs-h 100 kPa sat. vapor Actual Compressor Work Determine the refrigerant properties at the inlet and outlet for an isentropic process. Actual 2s entropic procEss Inlet state Determine the actual isentropic enthalpy from the efficiency. (Ans: 289.71 J/kg)...
A commercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at by The refrigerant enters the condenser at compressor consumes 3.3 kW of power, determine (a) the mass flow rate of the refrigerant, (b) the refrigeration load, (e) the COP, and (d) the g waste heat to cooling water that enters the condenser at 18°C at a rate of 0.25 kg/s and leaves at 26°C. 1.2 MPa and 50°C and leaves at the same...
Problem 4.040 SI Refrigerant 134a enters an air conditioner compressor at 4 bar, 20°C, and is compressed at steady state to 12 bar, 80°C. The volumetric flow rate of the refrigerant entering is 8.5 m3/min. The work input to the compressor is 127.5 kJ per kg of refrigerant flowing Neglecting kinetic and potential energy effects, determine the magnitude of the heat transfer rate from the compressor, in kw kW the tolerance is +/-596 Click if you would like to Show...
Most questions answered within 3 hours.
-
a bottle cap manufacturer with four machines and six operators
wants to see if variation in...
asked 35 minutes ago -
State Farm Insurance studies show that in Colorado, 55% of the
auto insurance claims submitted for...
asked 1 hour ago -
Complete the following reactions which form ethers (A
and B) and cyclic ethers (C-E) as major...
asked 1 hour ago -
in a perfectly elastic collision what is the velocity of ball A
if the original direction...
asked 2 hours ago -
PLEASE ANSWER ALL
1) The pressure of the atmosphere decreases with increasing
altitude in the
Choose...
asked 2 hours ago -
A simple random sample of 25,000 individuals are surveyed in
order to determine the prevalence of...
asked 2 hours ago -
People who do very detailed work close up, such as jewelers,
often can see objects clearly...
asked 2 hours ago -
14 years ago, Blue Lake Corp. issued 30 year to maturity
zero-coupon bonds with a par...
asked 2 hours ago -
Warnerwoods Company uses a perpetual inventory system. It
entered into the following purchases and sales transactions...
asked 2 hours ago -
Equivalent Units of Conversion Costs
The Rolling Department of Oak Ridge Steel Company had 6,842 tons...
asked 2 hours ago -
what does the concept of "core competence" mean? why
is this concept important? How would you...
asked 2 hours ago -
__________ is a type of visualization that is linked to strategy
and used within a formal...
asked 2 hours ago