4. A reversed Carnot cycle is used for refrigeration and rejects 1000kW of heat at 67C while receiving heat at -23C. Determine (a) COP, (b) the power required and (c) the refrigerating effect.
Q: 2. A parabolic antenna has a diameter across the top of 48 inches and a depth of 6 inches at the cen...
A:
Q: A piston is moving through a cylinder at a speed of 18 ft/s. The film of oil separating the piston f...
A: Given Diameter, d = 5 in Length, L = 3 in Velocity, dv = 18 ft/s Thickness, dt = 5 - 4.9...
Q: Q5: For the below shaded area, calculate Ixand Kx 130 mm 30 mm |30 mm
A: To Find:- IX & KX =?
Q: since 1986 DATE: Air enters 300 K rate of ratio temperature the the thermal efficiency of, the Brayt...
A:
Q: Figure Q1 shows the angular velocity of rod AB at the instant is 15 rad/s clockwise, determine the a...
A:
Q: A pair of gears, having 40 and 30 teeth respectively, are of 25° involute form. The addendum length ...
A: Given Z1 = 30 Z2 = 40 Pressure angle = 25 Length of addendum = 5 mm Module = 5.5 mm N = 1500 rpm To ...
Q: The rigid bar ABC is supported by pin at A and aluminium wire BD, is horizontal before the Load P is...
A: GIVEN DATA- A RIGID BAR GIVEN SUPPORTED BY WIRE AND PIN JOINT WE HAVE TO FIND VERTICAL DISPLACEMENT ...
Q: A: for the frame shown below, calculate the components of the force P directed along the axes of AB ...
A: Given frame
Q: Q3: Answer One of the following: A: for the frame shown below, calculate the components of the force...
A:
Q: To maximize production and minimize pumping costs, crude oil is heated to reduce its viscosity durin...
A:
Q: A cylindrical object with a mass of m = 4.65 lbm slides into a pipe downward. The object has a diame...
A: Write the given data. m=4.65 lbmd=8.4 inh=9.9 iny=0.018 inμ=0.125 lbf×s/ft2
Q: Find the moment with respect to x = 2a the area bounded by x = 2y and x2 4ay. %3D
A: Givenx=2ax=2yx2=4ay
Q: Determine work done
A: Given data : Force Applied F=3 N Distance covered d=2 m To find : Work done
Q: an aluminum shaft is 6ft. and has toruq of 500 lb-ft. the shear stress is 6500 psi and the angle of ...
A:
Q: Isometric View
A: Different types of lines used in engineering drawings are: Continues line Center line Hidden line
Q: A thin-walled cylindrical pressure vessel ofa radius r is subjected simultaneously to internal gaspr...
A: A cylindrical vessel or shell may be thin and thick depending upon the thickness of the plate in rel...
Q: Automatic transmissions use a __ instead of a clutchto transfer power from the flywheel to the trans...
A: An automated car is one that has an automatic gearbox and does not require the driver to manually...
Q: alculate the reactions at the point O
A:
Q: Consider the frictionless piston cylinder arrangement shown in the figure 1, in which two pistons ar...
A: Given: Atmospheric pressure Pa=105 Pa combined mass m= 5 kg A1-A2=10 cm2 Upward movement h=25 cm T...
Q: Consider the forces acting on the chip during an orthogonal cutting as shown in Figure 3. The cuttin...
A:
Q: The operating conditions found at two different points of a blade on a wind turbine are shown. These...
A: Given Dataϑk=1.33×10-5Re=?
Q: Calculate the heat transfer or the work for each step of a Rankine cycle. Also calculate the thermod...
A:
Q: A rectangular plate, 30mm by 60 mm is subjected to a tensile force of 5kN in the direction of the pl...
A: GIVEN DATA- w=30mm d=60mm Diameter D=15mm Load F=5KN Maximum stress =80 N/mm2 Stress concentration f...
Q: The rear window of an automobile is defogged by passing warm air over its inner surface. If the warm...
A:
Q: A pipe with a 2 m diameter carries water having a velocity of 4 m/s. What is the discharge in cubic ...
A: Given Diameter, d = 2 m Velocity, v = 4 m/s Find Discharge, Q
Q: A centrifugal pump driven by a 160-hp motor rotating at 2400 rpm is used to pump 70°F water in a man...
A:
Q: For a Rankine cycle, higher steam pressures and temperature conditions can be achieved because of th...
A: Given: The maximum temperature, Tmax = 600 deg C The maximum pressure, Pmax = 20 MPa The reheat temp...
Q: Determine vertical pinned support reaction
A: Given data : Point load =8 KN Point load=8 KN Point load=8 KN Point load=16 KN To find : Vertical ...
Q: It has been proposed the pipeline to be 1m diameter made out of the following spirally or longitudin...
A: the pipe lines are made up of cast iron, steel, wrought iron, red copper and brass pipes for the con...
Q: Use the deal gas law to find the temperature rise/drop in the air (M = 18.57 kg/kmol) for the consta...
A:
Q: . For an 8-ft length of gate in the figure, find the compression in strut CD due to water pressure B...
A:
Q: An object is traveling along a straight line, and the velocity of the object is defined by v = (30 -...
A: Givenv=30-0.03s2s=10m
Q: A throttling valve takes in saturated water vapor at 420kPa and discharges it at 69kPa. Calculate th...
A:
Q: Q6: Calculate the distance travelled by a bike between three places: 1- It was driven from rest at t...
A:
Q: Varying thermal conductivity Problem: Heat is being transferred under steady state condition through...
A: Given: The range of thermal conductivity = 0.86 – 1.52 kcal/hr.m°c The temperature range = 100°C - 1...
Q: Cone A turns 120 rpm and cone B turns 150 rpm and the shaft angle is 60°. If the base of cone A is 3...
A:
Q: Q6: Calculate the distance travelled by a bike between thre 1- It was driven from rest at the univer...
A: t=60sa=0.5m/s2t=15min=15×60sDeaccelerates=1m/s2 To-Find:- Total Distance travelled
Q: 1) A simple vapour compression system using R12 as a refrigerant. The refrigerant enters the compres...
A:
Q: The specific heat of water is given to be 4.18 kJ/kg.°C. This is equivalent to -. 4.18 kJ/kg. K
A: Given:Specific heat of water, C=4.18 kJ/kg oC
Q: Explain the difference between the microscopic and the macroscopic forms of energy. State the approa...
A:
Q: 24) The Young's modulus and the shear modulus of material are 120GPa and 45GPA respectively. What is...
A: Given, Young's modulus = E = 120 GPa Shear modulus = G = 45 GPa Let us represent, Bulk modulus = K...
Q: Dimension of a centrifugal pump impeller are Parameter Inlet, Section 1 Outlet, Section 2 Radius,r (...
A:
Q: A standard 0.505-in.-diameter tensile bar was machined to a 2.00-in.-gage length from a copper-nicke...
A:
Q: A and B are rolling cylinders connecting the shafts S and T. C and E are cylinders fast to these sha...
A:
Q: ihe tension cable AC Learning Goal: To apply the condition of equilibrium to three-dimensional syste...
A:
Q: A flywheel rotates at 120 rpm slowed down to 102 rpm during the punching operation that requires ¾ s...
A:
Q: A centrifugal pump delivers 0.071 m3/s of water against a head of 7.6-m at 1450 rpm and requires 6.7...
A: Given Initial Speed, N1 = 1450 rpm Head, H1 = 7.6 m Final Speed, N2 = 1200 rpm Find ...
Q: bend allowance is
A: Given: Metal sheet thickness is =2 mmIt is to be bent at an angle of one radian,Bent radius is= 100 ...
Q: 2.14. The one-story structure shown in Fig. 2.21 can be modeled in the first approximation as a sing...
A: Now here we know that K=3EIH3 (For a beam with flexural rigidity EI)Here 2 beams are stacked parall...
Q: 5-104* Acylindrical pressure vessel is fabricated by butt-welding 20-mm-thick steel (E=200 GPa and G...
A:
Step by step
Solved in 3 steps with 6 images
- The Reversed Carnot Cycle is used to run a food production company's refrigeration system. The system's hot refrigerant supply temperature should be 52 degrees Celsius, while the sink temperature should be -14 degrees Celsius. It is expected to have a capacity of at least 24 tons. It's important not to overlook losses. Determine: a. The COP b. The COP of Heat Pump c. The heat rejected from the system in kW d. The network in, hP e. The Energy Efficiency RatioE Expert Q&A Show the heat pump that operates on the ideal vapor-compression refrigeration cycle, with refrigerant-134a as the working fluid, on T-s diagram as in Figure (1). T House Он 1.4 MPa Win 320 kPa 4 step: 2 of 8 For the given ideal vapor-compression refrigeration cycle, with refrigerant-134a as the working fluid,specific entropy, specific enthalpy, pressure, and specific volumeat state are $i, ", , and Virespectively. Also, the saturated liquid state is denoted by the subscript f, the saturated vapor is denoted by the subscript g, and the properties at latent stage are denoted by the subscript fg. th step: 3 of 8 (a) Use “saturated refrigerant-134a 00 00 Tools 88 Home Courses 2.Provide the complete solution and diagram for this problem. A reversed Carnot cycle operating in a heat pump has an evaporator temperature of -4oC andcondenser temperature of 50oC. Find the performance factor if it will operate in a heat pump. A. 4.45 B. 3.45 C. 6.21 D. 5.9
- (2) A reversed Carnot cycle has a refrigerating COP of 4. (a) What is the ratio Tmax/Tmin? (b) If the work input is 6 kW, what will be the maximum refrigerating effect, kJ/min and tons. Ans. (a) 1.25, (b) 6.82 TRA reversed Carnot cycle has a refrigerating COP of 4. (a) What is the ratio Tmax/Tmin? (b) If the work input is 6 kW, what will be the maximum refrigerating effect, kJ/min and tons. (2) Ans. (a) 1.25, (b) 6.82 TR A reversed Carnot engine removes 40,000 kW from a (3) heat sink. The temperature of the heat sink is 260 K and the temperature of the heat reservoir is 320 K. Determine the power required of the engine. Ans. 9230.7 kWA refrigerator operating using vapor-compression cycle uses R-134a as a working fluid. The condenser temperature is 65oC and the evaporator temperature is -15oC. The compressor operates at 80% efficiency. Suppose that we replace the expansion valve in the vapor-compression cycle with a turbine that operates at 80% efficiency. Determine the coefficient of performance of the refrigeration cycle. Provide the new state properties (i.e. H, P, T and S) for this changes and use CATT for any values needed
- II. Draw the Carnot cycle then prove that the efficiency of a Carnot heat engine is nc=1- TL THThe co-efficient of performance of a refrigerator wor ing on a reversed Carnot cycle is 4. The ratio of t highest absolute temperature to the lowest absolu temperature is3. A Carnot cycle operates between sources and sink temperatures of 260°C and - 17.8°C. If the system receives 100 kJ from the source, find the efficiency of the system, the net work transfer, and heat rejected to the sink.
- (a) Based on the analysis of steam power plant having condenser, why thermal efficiency of power plant is high in cold region and less in warm region. Explain with the help of T-s diagram (b) Outline why value of TTD is negative in scenario where we have high pressure heater. Explain with the help of T-L diagram (c) In cogeneration having back pressure turbine process heater replaces condenser, outline the difference between process heater and condenserAn ideal regenerative cycle is executed with steam generation at 10 MPa and 600 deg C. Before condensation at 0.005 MPa, steam is extracted for feedwater heating first at 2.5 MPa and second at 0.6 MPa. On the basis of 1 kg of throttle steam, find:a. m1 and m2 in kg/kgb. ec in percentc. ee in percent Reminder:1. For values taken from the steam tables: Use them as is, do not round off.2. For values obtained by interpolation and final answers obtained by solving, use FOUR (4) decimal places.PLEASE USE THIS STEAM TABLE:https://docs.google.com/document/d/1wUPYkDmHnCMBEuLRMRTGEfz4D5kkohT4/editA refrigeration system operates on the reversed carnot cycle. The minimum and maximum temperature are -25 and 72 oC, respectively. If the heat rejected at the condenser is 6000kJ/min, find the power input required, in kW, and the tons of refrigeration required.