Sheet No. Ten 1-the temperature in evaporator coil is -6 °C and that in the condenser coil is 22 °C. assuming that the machine operates on the reversed carnot cycle. Calculate the COP the refrigeration effect per kW of input work, and the heat rejected to the condenser. (9.54;9.54kW;10.4kW)

Sheet No. Ten 1-the temperature in evaporator coil is -6 °C and that in the condenser coil is 22 °C. assuming that the machine operates on the reversed carnot cycle. Calculate the COP the refrigeration effect per kW of input work, and the heat rejected to the condenser. (9.54;9.54kW;10.4kW)

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter22: Condensers

Section: Chapter Questions

Problem 7RQ: When a standard-efficiency air-cooled condenser is used, the condensing refrigerant will normally be...

See similar textbooks

Related questions

Q: Q2. Two 35 mm shafts are connected by a flanged coupling The flanges are fitted with 6 bolts on 125…

Q: 10 rivets are fastened on a lap joint of 1.25 inch in diameter the thickness of the lap join were…

A: Given: Number of rivets→n=10 Diameter of the each rivet→d=1.25 inch Hence area for shear…

Q: normal shock wave was formed on the surface of a supersonic aircraft at a velocity of 1,600 m/s into…

A: Given , V1=1600 m/s, Find a) M₁ b) M₂ c) P₂ d) T₂ e) V₂

Q: b) The fuselage of an aeroplane consists of the following three layers: the outer layer made from…

Q: y b k.. a

A: Diameter of the part= a Diameter of the hole= c Distance between top edge of the part and top edge…

Q: 32. A container has water. If the water level is 0.5 m and water density is 10³kg/m³, the pressure…

A: Pressure is directly proportional to density of fluid and height of fluid in the tank

Q: The strain components for a point in a body subjected to plane strain are &x= 820 μE, Ey=-360μe and…

Q: A Carnot engine receives heat from source at 327°C causing an increase in entropy is equal to 5…

Q: Analyze the existing condition of the crank in a four- bar linkage. Draw a quick-return mechanism.…

A: A quick return mechanism is a device that generates a reciprocating motion in which the return…

Q: For this long shoe break system, we adopt the hard surface assumption with the maximum pressure of…

Q: Mohr’s circle is shown for a point in a physical object that is subjected to plane stress. Each grid…

A: Given data as per question Each grid slide=16 MPaFor a point in a physical object that is subjected…

Q: A rocket engine can generate hot gas conditions at the exit of the combustion chamber Po=100 atm, To…

Q: Calculate the forces, in Newtons, for the following 1. member FG 2. pin H 3. hydraulic cylinder AB…

A: Given: The load, P = 789 N The angle, θ = 37.4°

Q: (6-4) uy) A / Let two layers of fluid be dragged along by the motion of an upper pla shown in Figure…

Q: K22 of the global stiffness matrix f k1 wwww www k2 F, ky Mwww. 3 O's The springs have the following…

Q: Convert vacuum gauge reading 200 mm of Hg into absolute pressure in N/mm".

A: We must convert a vacuum gauge reading of 200 mm Hg into absolute pressure in N/mm2 in this problem.…

Q: The center of the 262-lb wheel with centroidal radius of gyration of 6.1 in. has a velocity of 3.3…

Q: A refrigerating system operates on the reversed Carnot Cycle. The higher temperature of the…

Q: = 0.02 s, 2/60 At time t = 0, the position vector of a particle mov- ing in the x-y plane is r = 5i…

A: Given data: t1=0 sr1→=5i mt2=0.02 sr2→=5.1i+0.4j m Need to determine the average velocity of the…

Q: At what rpm should the lathe revolve to rough turn a piece of cast iron (CS = 60 SFPM) 51 mm in…

Q: 2/28 A particle moving along a straight line has an accel- awab eration which varies according to…

Q: Consider an aligned fiber reinforced-polymer matrix composite for which the constituent fibers have…

A: Tensile strength is the highest load a material can withstand without cracking when stretched,…

Q: A plain flange coupling is used by a 75 mm shaft to transmit 50 kW at 100 rpm. It uses 6 bolts with…

Q: 2. The half section of an arc is under a uniformly varying load. If the weight of the arch is 50,000…

A: The centroid of a body is the point where all sides have equal volume. The centre of mass of a solid…

Q: The velocity of a particle traveling along a straight line is v = (3t2 – 6t) ft/sec, where t is in…

Q: The initially stationary uniform disk of mass m₁ = 2.2 kg and radius b = 265 mm is allowed to drop…

A: Find the required time .

Q: + Compressibility of Soils SIT M. A 2.1 m layer of clay is buried beneath a 3 m stratum of very…

Q: The 45-kg reel has a radius of gyration about its center O of ko = 220 mm. If it is released from…

Q: Calculate the forces, in Newtons, for the following 1. member FG 2. pin H 3. hydraulic cylinder AB…

A: Given: The load, P = 789 N The angle, θ = 37.4°

Q: tep by step solution answer is given below. Question: According to (9.3), photosynthesis stores 460…

A: During the photosynthesis, plants take in (CO2) and (H2O) from the atmospheric air and soil. Within…

Q: 1. A closed horizontal cylindrical tank 1.5 m in diameter and 4 m long is completely filled with…

A: Given:Diameter of tank, d=1.5 mlength of the tank, l=4 mspecific gravity of gasoline,…

Q: 3/105 The small 0.2-kg slider is known to move from position A to position B along the…

Q: A gas with density 1.25kg/m and dynamic viscosity Aair force on one side of the plate is Fs = 4N.…

Q: The bar AB shown in Figure 12-13 moves so that its lowest point A travels horizontally to the right…

A: Given information Velocity of point A, Find Velocity of point B ,

Q: A cantilever beam of cross-section 90 mm. width 120 mm deep carries a UDL of 12 KN/m. over the…

A: When a cantilever beam having length 'L' is subjected to a UDL having intensity ω kN/m then maximum…

Q: a) What exposure limit do you recommend to be considered for Chromium XI ? why? b) What exposure…

A: Exposure limits are chromium XI: Permissible exposure limit (PEL). The leader shall make sure that…

Q: A particular device needs to be made that will experience a change in temperature of 100 °C. Two…

Q: Q1 / Show that velocity profile for fully developed laminar flow on an inclined plane, shown in…

A: Apply continuity equation and navier stokes equation to solve this problem

Q: Determine the surface tension of liquid in contact with air and a glass tube. If the capillary tube…

A: The surface tension of a liquid in contact with air and a glass tube must be determined.When a…

Q: 2. Determine the final Mach number and density in the compressive case with an initial Mach number…

A: Compression waves are oblique shock waves . Use compression wave concept to solve this problem

Q: 3. For a single element beam as shown in figure below, its equivalent nodal load matrix should be [T

Q: An object has a volume of 1 cubic meter. If its specific gravity is 1.2, what is its weight…

A: GivenVolume of the object V=1m3specific gravity =1.2

Q: Solve for the gas constant of this certain gas.

Q: i need the answer quickly

Q: You have a cube, 1.0 meter on a side. It is submerged in a fluid of density of 1500 kg/m. One side…

Q: L A collar with a mass of 2 kg is rigidly attached at a distance d = 300 mm from d the end of a…

Q: For the loading shown, use the double-integration method to determine (a) the equation of the…

Q: Given that the compressor's energy input is 2100 kJ and the heat provided is 3500 kJ. The area is…

Q: - х a = 6 in b = 0.7 in C = 2 in

Q: In no less than 300 words, explain in your own words, what do you know and how well do you…

A: Fuel, such as coal, wood, oil, or gas, is a combustible material used to keep a fire going in…

Question

i need the answer quickly

Sheet No. Ten
1-the temperature in evaporator coil is -6 °C and that in the condenser coil is 22 °C.
assuming that the machine operates on the reversed carnot cycle. Calculate the COP the
refrigeration effect per kW of input work, and the heat rejected to the condenser.
(9.54;9.54kW;10.4kW)

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps with 1 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.

Similar questions

When a standard-efficiency air-cooled condenser is used, the condensing refrigerant will normally be higher in temperature than the entering air temperature.
Condensers in these refrigerators are all_______cooled.
The condensing pressure is 260 psig and the condenser outlet temperature is 108F for R-22. By how many degrees is the liquid subcooled in the condenser? A. 12F B. 42F C. 7F D. 14F
Sheet No. Ten 1. the temperature in evaporator coil is -6 °C and that in the condenser coil is 22 °C. assuming that the machine operates on the reversed carnot cycle. Calculate the COP the refrigeration effect per kW of input work, and the heat rejected to the condenser. (9.54;9.54kW;10.4kW) 2. a Carnot refrigeration cycle absorbs heat at (-12 °C) and rejects it at 40 °C a- calculate the CoP of this cycle d- If the cycle is absorbing 15 kW at (-12 °C) temperature, how much power is required. 3. a refrigeration system using R-22 is to have a refrigerating capacity of 80 kW. The cycle is standard vapour compression cycle( dry saturated vapour at compressor inlet) in which the evaporation temperature is (-8°C) and the condensing temperature 42 °C a- determine the volume flow of refrigerant measured in cubic meter per second at the inlet to the compressor. B- calculate the power required by the compressor. C-at the entrance to the evaporator what is the fraction of vapour in the mixture…
In a refrigerant 11 system, one evaporator is to provide 256 kw of refrigerant at 0°C and another evaporator is to provide 228 kw at -20°C. The system uses two stage compression with intercooling and removal of flash gas. The condenser temp is 40°C. h2 = 393 kJ/kg, h4 = 412 kJ/kg Compute the ff:a. mass flow rate at low stage compressor (m1), answer must be in kg/sb. mass flow rate at high stage compressor (m3), answer must be in kg/sc. low stage compressor work, answer must be in kw
In a refrigerant 12 system which serves a 250 kw evaporator at -30°C. The system uses two stage compression with intercooling and removal of flash gas. The condenser temp is 40°C. h2 = 357 kJ/kg, h4 = 365 kJ/kg Compute the ff:- mass flow rate at low stage compressor (m1), answer must be in kg/s- mass flow rate at high stage compressor (m3), answer must be in kg/s- low stage compressor work, answer must be in kw
2. A cascade refrigeration system uses R22 in the low temp unit and R12 in the high temp unit. The system develops 28 kW of refrigeration at -45°C. The R12 system operates at -12°C evaporating temp and 40°C condensing temp. There is a 10° overlap of temperatures in the cascade condenser. Calculate the (a) mass flow rate of R22, (b) mass flow rate of R12
In a Refrigerant 11 system ,one evaporator is to provide 210 kw of refrigerant at 0 0C and another evaporator is to provide 224 kw at -200C . The system uses two stage compression with intercooling and removal of flash gas. The condenser temp is 400C . Given that, h2=389kJ/kg, h4=416kJ/kg Compute the following: a.) mass flow rate at low stage compressor (m1)ANSWER: 1.25377 kg/s b.) mass flow rate at high stage compressor (m3)ANSWER: 2.90255 kg/s c.) low stage compressor workANSWER: 12.96406 kw d.) high stage compressor workANSWER: 78.68819 kw e.) total compressor workANSWER: 91.65226 kw f.) COPANSWER: 4.73528 g.) heat rejected in the condenserANSWER: 525.65226 kw
b. A refrigerating system using Freon-12 has an evaporator saturation temperature of - 25°C and a condenser saturation temperature of 35°C. The vapor is dry saturated at entry to the compressor and has a temperature of 65°C after compression to the condenser pressure. There is no undercooling of the liquid in the condenser. i. Calculate the input power required by the compressor per kW of refrigeration. ii. Calculate the COPRef of the refrigerating system. ii. Show the operating cycle of the refrigerating system on a T-s diagram.
3)A cascade refrigeration system uses R22 in the low temp unit and R12 in the high temp unit. The system develops 30 kW of refrigeration at -40C. The R12 system operates at -10C evaporating temp and 38C condensing temp. There is a 10 degree overlap of temperatures in the cascade condenser. Calculate the (a) mass flow rate of R22, (b) mass flow rate of R12, (c) the power required by R22 compressor, and the power required by R12 compressor.
3) A cascade refrigeration system uses R22 in the low temp unit and R12 in the high temp unit. The system develops 28 kW of refrigeration at -45°C. The R12 system operates at -12°C evaporating temp and 40°C condensing temp. There is a 10° overlap of temperatures in the cascade condenser. Calculate the power required by R22 compressor, and the power required R12 compressor.
A refrigeration plant running on R-134a operates between saturation temperatures 0°C and 45°C andhas a refrigeration capacity of 1-MW. The vapour is dry saturated at entry to the compressor and there isno undercooling in the condenser. Taking an overall isentropic efficiency for the compressor of 0.8,calculate:3.1 The coefficient of performance,3.2 The required power input.