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(5 pt) The efficiency of an actual refrigerator must be equivalent Camot refrigerator 4. that of an
6. Using an engine of 45% thermal efficiency to drive a refrigerator having a COP of...
6. Using an engine of 45% thermal efficiency to drive a refrigerator having a COP of 3, a. Draw the heat engine and heat pump diagram as described with a suitable label What is the heat input into the engine for 5 MJ removed from the cold body by the refrigerator? b. If this system is used as a heat pump, how many MJ of heat would be available for heating for 5 MJ of heat input to the engine?...
The actual work of an adiabatic compressor is 5 kW. If the second law efficiency of...
The actual work of an adiabatic compressor is 5 kW. If the second law efficiency of this compressor is 90%. The irreversibility is
4) A refrigerator may be regarded as the inverse of a steam engine, in that work...
4) A refrigerator may be regarded as the inverse of a steam engine, in that work is performed in order to remove heat from a system. It may be regarded as a steam engine run in reverse (i.e. the first step is a reversible adiabatic expansion from Th to Tc.) Heat is absorbed by the gas at the lower temperature in the succeeding isothermal expansion. The efficiency of a refrigerator is: Aqabsorbed TcdS Tc Awinput Tyds – TcdsTy - Tc...
4) A refrigerator may be regarded as the inverse of a steam engine, in that work...
4) A refrigerator may be regarded as the inverse of a steam engine, in that work is performed in order to remove heat from a system. It may be regarded as a steam engine run in reverse (i.e. the first step is a reversible adiabatic expansion from Th to Tc.) Heat is absorbed by the gas at the lower temperature in the succeeding isothermal expansion. The efficiency of a refrigerator is: _Aqabsorbed TcdS To Tyds – Tcds TH - Tc...
4) A refrigerator may be regarded as the inverse of a steam engine, in that work...
4) A refrigerator may be regarded as the inverse of a steam engine, in that work is performed in order to remove heat from a system. It may be regarded as a steam engine run in reverse (i.e. the first step is a reversible adiabatic expansion from Th to Tc.) Heat is absorbed by the gas at the lower temperature in the succeeding isothermal expansion. The efficiency of a refrigerator is: Tods Tc E-49absorbed - AWinput Tyds – Tods TH...
5. Time to failure of a household refrigerator. The time to failure of a particular refrigerator...
5. Time to failure of a household refrigerator. The time to
failure of a particular refrigerator type is represented by the
following pdf: , which iObtain the probability and thereby the %
units, or relative frequency of occurrence, of this refrigerator
that are expected to survive its MTTF. f) The refrigerator company
has a 1-month warranty program. Write the expression for and obtain
the probability that the refrigerator will fail during the first
month. F(1/12) = g) Write the expression...
Homework: HW #4 Score: 0 of 1 pt 6 of 7 (5 complete) SC4-4 (book/static) The Cheesecake Factory must implement and...
Homework: HW #4 Score: 0 of 1 pt 6 of 7 (5 complete) SC4-4 (book/static) The Cheesecake Factory must implement and enforce an effective internal control system to both comply with financial reporting reg server at a Cheesecake Factory restaurant A (Click the icon to view information about the beginning of the server's shift) (Click the icon to view information about serving customers ) A (Click the icon to view information about the end of the server's shift.) Which of...
1.5 L of 19 ∘C water is placed in a refrigerator. The refrigerator's motor must supply...
1.5 L of 19 ∘C water is placed in a refrigerator. The refrigerator's motor must supply an extra 7.0 W power to chill the water to 5∘C in 1.0h. What is the refrigerator's coefficient of performance?
5. Which of the following does not improve the efficiency of Rankine Cycle a. Increasing the...
5. Which of the following does not improve the efficiency of Rankine Cycle a. Increasing the condenser temperature b. Lowering the condenser pressure b. Superheating the steam to high temperature d. Increasing the boiler pressure 6. For the ideal vapor-compression cycle, the phase description at the compressor inlet is: a. Saturated Mixture b. Superheated Vapor c. Saturated Liquid d. Saturated Vapor 7. For the ideal vapor-compression cycle, the expansion valve is used to: a. Increases the refrigerator pressure b. Increases...
1. A refrigerator uses refrigerant-134a as the working fluid and operates between -5 oC and 40...
1. A refrigerator uses refrigerant-134a as the working fluid and operates between -5 oC and 40 oC. The compressor, which is a reciprocating type, rotates at 1500 rpm. The compressor has 4 cylinders. The cylinder diameter is 120 mm and the stroke is 100 mm. The clearance volume is 5%. Find: Clearance volumetric efficiency, the mass flow rate of the refrigerant the power input to the compressor, the refrigeration capacity the COP of the system For above compressor type, sketch...
6. Using an engine of 45% thermal efficiency to drive a refrigerator having a COP of 3, a. Draw the heat engine and heat pump diagram as described with a suitable label What is the heat input into the engine for 5 MJ removed from the cold body by the refrigerator? b. If this system is used as a heat pump, how many MJ of heat would be available for heating for 5 MJ of heat input to the engine?...
4) A refrigerator may be regarded as the inverse of a steam engine, in that work is performed in order to remove heat from a system. It may be regarded as a steam engine run in reverse (i.e. the first step is a reversible adiabatic expansion from Th to Tc.) Heat is absorbed by the gas at the lower temperature in the succeeding isothermal expansion. The efficiency of a refrigerator is: Aqabsorbed TcdS Tc Awinput Tyds – TcdsTy - Tc...
4) A refrigerator may be regarded as the inverse of a steam engine, in that work is performed in order to remove heat from a system. It may be regarded as a steam engine run in reverse (i.e. the first step is a reversible adiabatic expansion from Th to Tc.) Heat is absorbed by the gas at the lower temperature in the succeeding isothermal expansion. The efficiency of a refrigerator is: _Aqabsorbed TcdS To Tyds – Tcds TH - Tc...
4) A refrigerator may be regarded as the inverse of a steam engine, in that work is performed in order to remove heat from a system. It may be regarded as a steam engine run in reverse (i.e. the first step is a reversible adiabatic expansion from Th to Tc.) Heat is absorbed by the gas at the lower temperature in the succeeding isothermal expansion. The efficiency of a refrigerator is: Tods Tc E-49absorbed - AWinput Tyds – Tods TH...
5. Time to failure of a household refrigerator. The time to
failure of a particular refrigerator type is represented by the
following pdf: , which iObtain the probability and thereby the %
units, or relative frequency of occurrence, of this refrigerator
that are expected to survive its MTTF. f) The refrigerator company
has a 1-month warranty program. Write the expression for and obtain
the probability that the refrigerator will fail during the first
month. F(1/12) = g) Write the expression...
Homework: HW #4 Score: 0 of 1 pt 6 of 7 (5 complete) SC4-4 (book/static) The Cheesecake Factory must implement and enforce an effective internal control system to both comply with financial reporting reg server at a Cheesecake Factory restaurant A (Click the icon to view information about the beginning of the server's shift) (Click the icon to view information about serving customers ) A (Click the icon to view information about the end of the server's shift.) Which of...
5. Which of the following does not improve the efficiency of Rankine Cycle a. Increasing the condenser temperature b. Lowering the condenser pressure b. Superheating the steam to high temperature d. Increasing the boiler pressure 6. For the ideal vapor-compression cycle, the phase description at the compressor inlet is: a. Saturated Mixture b. Superheated Vapor c. Saturated Liquid d. Saturated Vapor 7. For the ideal vapor-compression cycle, the expansion valve is used to: a. Increases the refrigerator pressure b. Increases...
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