A refrigeration system multi evaporators at different temperatures as shown in figure. The system uses R134a as refrigerant. Determine the required power to operate the system and the COP. Tc = 34C

A refrigeration system multi evaporators at different temperatures as shown in figure. The system uses R134a as refrigerant. Determine the required power to operate the system and the COP. Tc = 34C

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

Chapter50: Commercial, Packaged Rooftop, Variable Refrigerant Flow, And Variable Air Volume Systems

Section: Chapter Questions

Problem 22RQ: Variable refrigerant flow systems sense the ______and _____of the refrigerant to determine the...

See similar textbooks

Related questions

Q: Cable ABCD is used to support the 1 kN and 2 kN loads applied at B and C, respectively. 0.3 m 1m B C…

Q: A small airplane flying horizontally with a speed 161 mi/hr at an altitude of 275 ft above a remote…

Q: As shown in the figure below, water behind a dam enters an intake pipe at a pressure of 24 psia and…

Q: Q1 A smooth cylinder of 50.1 mm inside diameter and 150 m long is placed with its axis vertical. If…

Q: Vo = 31 m/s A/α 54 m -R 11 m B

A: Given,

Q: Using the associated equations learned from the first law of thermodynamics derive the equations for…

A: First law of thermodynamics The first law of thermodynamics states that energy can neither be…

Q: Refrigerant 134a at p₁ = 30 lbf/in², T₁ = 40°F enters a compressor operating at steady state with a…

A: Given data: p1=30 lbf/in2T1=40°Fm˙=350 lb/hp2=160 lbf/in2To=40°FW˙C=3.5 hp=8905.52 Btu/hr Need to…

Q: 3 A cylinder contains 5 m³ of an ideal gas at a pressure 1 bar. This gas is compressed in a…

Q: Consider a reducer with inlet and outlet diameters of D1 and D2, respectively. The respective…

A: Law of conservation of momentum: According to this law, " the rate of change of linear momentum of…

Q: 15 kg boxes are being transported around a curve via a conveyor belt as shown to the right. Assuming…

Q: 3. For this series of 5 questions, a block is released from the position shown with a certain…

Q: When F = 300 N with Θ = 40°, what is the maximum value which P may have for static equilibrium?…

Q: Which is more important to you– model accuracy, or model performance?

Q: A cube of side 21 mm is made of a material with thermal conductivity 182 W m-1 K-1, density 1426 kg…

A: Given:Side of a cube, S=21 mm=0.021 mThermal conductivity of a material, k=182 W/m.KDensity of a…

Q: Crank OA = 75 cm with an angle of 30oC with respect to horizontal;OP = 50 cm; CA = 150 cm; CD = 135…

A: Given Data OA = 75 cm θ=30 OP = 50 cm; CA = 150 cm; CD = 135 cm

Q: 200 stress, σ (MPa) 0.01 0.03 strain, &

A: Given Data- A stress-strain curve given we gave to find the elastic strain and plastic strain

Q: Steps on autocad

A: Given 2D sketch To find Steps

Q: The loading and unloading response of a metal is shown in the figure. What is the elastic and…

A: Given: The stress-strain diagram of metal is given,

Q: 04:9 x 104 cm³ of water vapor is in equilibrium with the same amount of liquid phase at 8 MPa.…

Q: elasticity

A: Original Diameter D1= 0.505 in Hence Original Area A0= π4D12= π4×0.5052= 0.2003 m2 Final Diameter…

Q: A tall open-topped standpipe has an inside diameter of 2,750 mm and a wall thickness of 6 mm. The…

Q: Air within a piston-cylinder assembly, initially at 33 lbf/ in.², 510°R, and a volume of 6 ft³, is…

Q: 3. Water flows through a pipe at 5 L/s. If gage pressures of 12.5 kPa, 11.5 kPa, and 10.3 kPa are…

Q: Bar OA has the angular motions of 3.4 rad/s, and 7.2 rad/s2 is shown. If angular velocity of Bar AB…

Q: Determine the location h of the spot toward which the pitcher must throw if the ball is to hit the…

Q: Q6. The 9-kg ball is connected to a spring with spring constant k = 100 N/m and unstretched length…

A: The force responsible for the motion of the ball can be determined as shown below.

Q: Q15. A ball is being pushed by a rod in the vertical plane along a curved path with equation = (C.0)…

A: Given data Constant C = 0.5 Theta = 1.0 rad Determine the angle .

Q: A cylinder contains 5 m³ of an ideal gas at a pressure 1 bar. This gas is compressed in a reversible…

A: Given, V1= 5 m3 P1= 1 bar P2=5 bar

Q: Q22. As shown in the image below, the force acting on the 3-kg crate is a function of time. The…

Q: determine the minimum safe speed so no slipping occurs.

A: Centripetal acceleration will help to keep this car on bank and not sliding. It is given that angle…

Q: Just need to figure out how to draw the stress strain curve and calculate the modulus of elasticity

A: according to the given da6ta we need to find ss curve and elastic modulus.

Q: determine the: a. Equivalent concentrated load of each shape b. X and Y measurements of the centroid…

Q: Q5/ In refrigeration system uses R717, the evaporator temperature is -20°C and the condenser…

Q: 3. For this series of 5 questions, a block is released from the position shown with a certain…

Q: Answer the following questions using the phase diagram of iron and iron carbide below: For a…

A: Given data:- 99.70 wt% Fe–0.30 wt% C alloy at a temperature of 600 °C To Find:- a. The fractions of…

Q: Q4. In the image shown below, according to the provided datum line, determine the gravitational…

A: Given data Mass of block = 6.0 kg Radius = 2.1 m Take g= 9.81 m/s2

Q: Power can be generated in principle by utilizing the naturally occurring decrease with depth of the…

A: Hot reservoir temperature, Th = 60°F or 288.706 K Cold reservoir temperature,Tc = 45°F or 280.372 K

Q: The water was heated up until the temperature is 200°C. At this time, a pressure regulating valve…

Q: A particle is launched from point A with a horizontal speed u and subsequently passes through a…

Q: 2.80 A 1-m-diameter cylindrical mass, M, is connected to a 2-m-wide rectangular gate as shown in…

Q: (08) Air in a piston-cylinder occupies 0.12 m³ at 552 kPa. The air expands in a reversible adiabatic…

Q: m₁ m₂

Q: A 60-lb aluminum bar, initially at T₂ = 150°F, is placed in a tank together with 190 lb of liquid…

Q: 5) If the block has mass of 35 kg and its initial velocity is 2.7 m/s (at x = 3 m), determine the…

A: Given data: m=35 Kgx=3 mintial velocity v=2.7 m/sg=9.81 m/sk=5 KN/my=0.25x2

Q: st be included if the average

A: Given-Information:- Time, t = 8 seconds To-Determine:- Average Velocity, Vavg = m/s,

Q: Reaction Force at Joint A? Reaction Force at Joint I? B 70° 45° O 20 lbs 12.00- 36.62⁰ FL 30 lbs H G…

Q: Q7. In the image shown below, the 2.8-kg collar is connected to a spring with unstretched length of…

A: The vertical height of the collar from the datum can be determined as shown below.

Q: Determine the capillary action (rise or fall) of mercury in a capillary tube of diameter 1.5 mm.…

A: Given data :- Capillary tube of diameter (d) = 1.5 mm. Surface tension (σ) = 0.514 N/m contact…

Q: A conical bar tapers uniformly from a diameter of 4 cm to 15 cm in a length o al force of 80 kN is…

A: Given data:Diameters of the conical bars are 4 cm and 15 cm,d1=4 cmd2=15 cmLength of the conical…

Q: The assembly weighs 10 lb and has a radius of gyration kg = 0.60 ft about its center of mass G. The…

A: Given Data: Mass of Assembly M=10 lb=1032.174=0.3108 slug Radius of gyration KG=0.6 ft The kinetic…

Question

100%

Q8/ A refrigeration system multi evaporators at different temperatures as shown in figure.
The system uses R134a as refrigerant. Determine the required power to operate the system
and the COP.
T = 34°C Or
Pc =
Pe2
7
صمام تمدد. ۲
صمام تمدد. ۱
Pe2
Pel
مكثف
RC2=20 TR, T=10 °C
RC 1 = 10 TR. T=-10°C
مبخر-۱
ضاغط -1
ضاغط -۲

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

Step 2

Step 3

Step 4

Step 5

Step by step

Solved in 5 steps with 5 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

Q8/ A refrigeration system multi evaporators at different temperatures as shown in figure. The system uses R134a as refrigerant. Determine the required power to operate the system and the COP. Tc = 34C
Determine the coefficients of performance of the refrigeration cycle.
Three water coils are connected in parallel. The water supplied to the coils feeds into a commonreturn line. The first coil feeds 60 gpm of 125 o F water into the return line. The second coil feeds 50gpm of 120 o F water into the line. The third coil feeds 50 gpm of 118 o F water into the commonreturn line. What is the temperature of the water in the common line after the three streams ofwater mix?
Define an isothermal process
2- The following data relate to a two-pass surface condenser: Steam condensed = 1540 kg/hr Temperature of cooling water when it enters the condenser = 15° C Temperature of cooling water when it leaves the condenser = 30 ° C Vacuum in the condenser = 675 mm of Hg Barometer reading = 750 mm of Hg Temperature of condensate = 32 ° C Quality of exhaust steam = 0.92 Water velocity in tubes = 2.6 m/s Outside diameter of tubes = 2.8 cm Thickness of tubes = 0.03 cm Heat Transfer coefficient = 3.35 kJ/h/cm Determine Area of the tube surface required а- b- No. of tubes c- Length of tubes
The following data were obtained from a test of a surface condenser: Inlet temperature of circulating water = 21°C Outlet temperature of circulating water = 35°C Vacuum in the condenser mm of Hg Compute the efficiency of the condenser. 704.7 mm of Hg Barometer reading 760
A manufacturing company is intending to use its water cooled condenser for its proposed cold storage room. The name plate of the condenser gives the following specifications: refrigerant ammonia condenser water inlet 30 OC condenser water outlet 40 ỌC condensing temperature 35 OC refrigerant flow 3.84 kg/min circulating water flow 120 kg/min If the company decided to purchase a new compressor and evaporator, find the tonnage of the system and the temperature in the evaporator, (b) what is the COP? (c) find the theoretical hp required.
Provide a complete given and computation. Include all the decimals. There are received 68,000 kg/h of steam by an ideal regenerated engine, having only one heater, of which the heater receives 15,400 kg/hr the condenser receives the remainder at 0.007 MPa. If the heater pressure is 0.96 MPa, find the state (quality or "SH) of the steam (a) at the heater entrance and (b) at the condenser entrance.
Number 3 The food storage room requires a cooling system with a capacity of 15 tons of refrigeration that operates at an evaporator temperature of -17.5 ° C and a condenser temperature of 37.0 ° C. The refrigerant used is R-134a and the system operates in saturated conditions. a. COP= b.Refrigerant flow rate = Answer in kg / s. c. Heat loss rate in condenser = Answer kJ / s.
A summer air-conditioning shown below is required to maintain a certain room at specified conditions. The layout of the system is indicated on the next page and the specifications are listed below.System specifications:Required room temperature: 23⁰C, 50% Relative humidityAtmospheric pressure: 101 kPaOutside air conditions: 30⁰C, 80% Relative humidity Sensible heat gain: 5 kWLatent heat gain: 4 kWTemperature rise across fan: 1.5⁰CTemperature of air leaving cooler: 12⁰CTemperature of air entering room: 18⁰CApparatus dew point of cooler: 7⁰C
Please explain why: *A hot coffee in an open cup is an example of open system *Sealed pressure cooker with a whistle are a closed system
The temperature limits of a CO2 refrigerating plants are 25°C and -10°C. If the vapour is dry at the end of compression, calculate COP, the capacity of the refrigeration plant, if 4 kg/min fluid is circulated in the system. Use the following CO2 table. Also, draw the p-h and T-s diagram Temp Liquid Liquid entropy Vapour entropy Vapour enthalpy Latent in °C enthalpy enthalpy Sf in kJ/kg K Sg in kJ/kg K h; in kJ/kg hig in kJ/kg h, in kJ/kg 25 81.3 121.4 202.6 0.251 0.63 |-10 |-7.54 245.3 237 -0.042 0.84