Air enters the compressor of an ideal gas refrigeration cycle at -23°C and enters the turbine at 17°C. If the pressure ratio is 3.5, determine the COP of the cycle. (Assume cold-air-standard: Constant specific heat)
Q: Q5. According to the manufacturer, a Porsche Spyder reaches 0-100 kmph in 3 seconds. A person starts...
A:
Q: Discuss the result of thermal conductivity coefficient and compared its value with thermal conductiv...
A: Coefficient of thermal conductivity of a material is the ability of a material to conduct heat. It ...
Q: Find the minimum principal stress if maximum shear stress is 10 MPa and maximum principal stress is ...
A:
Q: The velocity of a particle traveling along a straight line is v= (312 - 6t) ft/s, where t is in seco...
A: Given: Velocity of the particle→v=312-6t fts We know that→v=dsdt Hence: →dsdt=312-6t→ds=312-6tdt→∫d...
Q: 12 kg/s of steam expands in an adiabatic turbine from at 10 MPa and 450°C to 10 KPa. The inlet and e...
A:
Q: A vertical rod of length L and diameter d is fixed at its upper end and carries a load Wat its lower...
A:
Q: The Dipping Bird Machine experiment:explain the dipping bird machine motion in the context of a the...
A:
Q: Water (Cp = 4200 J/kg. °C) is used cool an unknown fluid (with a given Cp = 3810 J/kg.°C) using a tw...
A:
Q: Solve by using dimensional analysis. Calculate the weight in lbf of a 58 lbm object in a place where...
A:
Q: Fused deposition modelling is an additive manufacturing process where a binder is used to join the m...
A: Fused Deposition modeling is an additive manufacturing process in which 3D objects are manufactured....
Q: 7. Try to answer application conditions of three kinds of most common used drill bit? 8. What are th...
A: Three most common types of drill bits and their uses can be as follows: (1) If the drill bit has low...
Q: Calculate the maximum load (P) that can be supported by the knuckle joint that shown in the figure b...
A:
Q: 40 kN 15 kN 30 3. Two forces are acting on a beam as shown. Determine a single resultant force and s...
A:
Q: 1. The mass of packages C, D, and E are 300, 200, and 400 lb, respectively. Ignore the masses of the...
A:
Q: Given the following Product Structure Record, the number of D's required for each A is A B(3) C(2) D...
A: Given Data: Number of B required for each A, 3 Number of C required for each A, 2
Q: , calculate the resultant force.
A: TO FIND Resultant force(FR)
Q: A simple heat exchanger is made by installing a close return bend on two 3/4-in Schedule 40 steel pi...
A: Given data as per the question Diameter of pipe =0.75 in =0.0625 ft Flow rate =29.2 gal/min we know ...
Q: A yoke, alternatively known as a control wheel or a control column, is a device used for piloting so...
A: Answer: velocity of wind ,v w =21 mil/hr Relative velocity of plane,va/w=78 mil/ hr Drawing the vel...
Q: The assembly consists of a solid 15 mm diameter rod connected to the inside of a tube using a rigid ...
A:
Q: Q3/ A 10-cm length of platinum wire 0.5 mm in diameter is placed horizontally in a container of air ...
A:
Q: s. Obtain the amount of water leaking
A: To find Amount of water leaking through hole.
Q: specific gravity 0.8, two pressure gauges have been installed at A and B where the diameters are 16 ...
A:
Q: a power input of 23 kW nd heat is delivered to be 3000Kj/min, what is its COP? if the temperature in...
A:
Q: (4) Two steels are being considered for manufacture of as-forged connecting rods. One is AISI 4340 C...
A:
Q: The tension in the supporting cable AB is 10 kN. Write the force which the cable exerts on the boom ...
A:
Q: 12 cm x 16 cm air compressor is operated with a maximum pressure of 10 kg/cm^2. There are 5 bolts wi...
A:
Q: Assuming that the gyroscope is at a point on the Earth's surface with latitude A and that ws >> 7, 3...
A: GYROSCOPE If the axis of spinning of rotating body is given and angular motion about an axis of spin...
Q: Water is flowing in a fire hose with a velocity 200000 Pa. At the nozzle the pressure decreases to a...
A:
Q: Stereolithography is a additive manufacturing process. based O foil O powder O filament O liquid
A: Stereolithography is a Foil(layer by layer)based additive manufacturing process.
Q: Consider the portion of an excavator shown. At the instant under consideration, the hydraulic cylind...
A:
Q: 1. Containers of various liquids are connected to a U-shaped tube as shown (the surface of the oll l...
A: A manometer is a device that measures liquid pressure in relation to an external source, which is co...
Q: 4. The acceleration of a rocket travelling upward is given by a = (6 + 0.02s) m/s², where s is in me...
A: Given: a = 6 + 0.02s Correct answer: t = 5.625 s
Q: 5. The jet engines on an airplace must develop a certain amount of power to propel the airplane thro...
A: given; speed (V1)=280km/haltitude(h1)=4000 mincrease in power percentage (%P)=?at altitude(h2)=500mv...
Q: 1. The mass of packages C, D, and E are 300, 200, and 400 lb, respectively. Ignore the masses of the...
A:
Q: For the following mechanism, if velocities vc = 3.7 m/s, and va = 4.0, determine the magnitude of th...
A: Given: V_A = 4.0 m/s V_C = 3.7 m/s To find: Angular velocity of AC = ?
Q: Write, but do not solve, the equations of motion for the translation mechanical system shown in the ...
A:
Q: Two forces of 800 N and 300 N are acting on a hook and passing through point O as shown in Figure 1....
A:
Q: The spring constant shown is k and the masses are ma and mg . The horizontal bar is smooth. At the i...
A:
Q: Hydrogen is expanded in a cylinder in an equilibrium process from initial conditions of volume of 0....
A: It is very basic question of thermodynamics. Used concept is work done in a closed system.
Q: You have three devices: a Carnot heat engine, a Carnot heat pump and a Carnot refrigerator. Use a co...
A: Given, Cold reservoir temperature = TC = -18 oC = 255 K Minimum hot reservoir temperature = Thmin = ...
Q: What are dislocations? One dimensional crystal defects. Bone ruptures. Places in the crystal wher...
A: It is required to determine correct option
Q: For the mechanism in the image below, the end A of the bar is moving downward along the slotted guid...
A: Given that, VA=2 m/sec,r=0.5 m,θ=49°,x=y2-r2 From the triangle given in the figure, sinθ=ry .......
Q: For the T-shaped device shown in the figure, 3 couples act and a force S = 71i+30j- 15k If M= 60lb, ...
A:
Q: You are designing a robot for engineering students to teach a course online what type of actuator wi...
A: INTRODUCTION Assuming that you will construct robot equipment, picking the right robot components is...
Q: What Is tne value oT Torce in member AB In kN if the vertical reaction at A is 28 kN? Tensile force ...
A:
Q: What is the difference between refrigerators and heat pumps? From their mechanics and theory
A: The heat pump and refrigerator can be described as: Refrigerator: The refrigerator is a device that ...
Q: for distance s 54 1-17t from time 0.1 to 2 seconds, determine the maximum velocity.
A: To find maximum velocity
Q: A steel rod 8 mm in diameter is under the action of a tensile force (P) of 600 Newton. Calculate the...
A: Tensile stress is given by the following formula, Sigma=P/A Where P is the tension force and A is th...
Q: Theoretical calculations: 3. How dose the bandwidth change in relation to increasing signal amplitud...
A: Answer: consider the wide band Frequency modulation ( WBfm) β ⇒ modulation Index ⇒▵ ffm β = kf...
Q: What are the Bench Drill Press OBJECTIVES/PURPOSE
A: A bench drill press is a machine tool used to produce holes in a work piece. The tool used is called...
Step by step
Solved in 2 steps
- Condensers in these refrigerators are all_______cooled.Refrigerators currently being manufactured in the United States are using______as their refrigerant.The COP of vapor-compression refrigeration cycles improves when the refrigerant is subcooled before it enters the throttling valve. Can the refrigerant be subcooled indefinitely to maximize this effect, or is there a lower limit? Explain.
- Air enters the compressor of an ideal gas refrigeration cycle at 12°C and 50 kPa and the turbine at 47°C and 250 kPa. The mass flow rate of air through the cycle is 0.08 kg/s. Assuming variable specific heats for air, determine (a) the rate of refrigeration, (b) the net power input, and (c) the coefficient of performance.Why is the reversed Carnot cycle executed within the saturation dome not a realistic model for refrigeration cycles?An ideal vapor-compression refrigeration cycle uses R-134a as the refrigerant. The refrigerant enters the evaporator at 160 kpa with a quality of 25% and leaves the compressor at 65 °C. If the compressor consumes 800W of power, determine (a) the mass flow rate of the refrigerant, (b) the condenser pressure, and (c) the COP of the refrigerator
- A steam turbine cycle running on a Rankin cycle between the condenser pressure of 10 kPa and the boiler pressure of 165 bar, the steam enters the high pressure turbine at a temperature of 600 ° C. The average turbine expands to 800 kPa and then enters the boiler again to be reheated to 550 ° C. The steam leaves the boiler to a low pressure turbine, where it expands to the condenser pressure. If the expansion and compression in the turbine and the pump is isotropic, and the addition of heat is constant pressure, find the efficiency of the cycle. Note point # 1 at the exit area of the steam from the boilerA refrigerator uses refrigerant-134a as the working fluid and operates on an ideal vapourcompression refrigeration cycle between 0.12 MPa and 0.7 MPa. The mass flow rate of therefrigerant is 0.05 kg/s. Show the cycle on a T-s diagram with respect to saturation lines.Determine;(a) The rate of heat removal from the refrigerated space and the power input to thecompressor,(b) The rate of heat rejection to the environment, and(c) The coefficient of performance.A steam power plant operates on a simple ideal Rankine cycle between the pressure limits of 1250 and 2 psia. The mass flow rate of steam through the cycle is 75 lbm/s. The moisture content of the steam at the turbine exit is not to exceed 10 percent. Show the cycle on a T-s diagram with respect to saturation lines, and determine (a) the minimum turbine inlet temperature, (b) the rate of heat input in the boiler, and (c) the thermal efficiency of the cycle.
- A simple vapor compression cycle develops 15 tons of refrigeration using ammonia as refrigerant and operating at condensing temperature of 24 C and evaporating temperature of -18C and assuming compression are isentropic and that the gas leaving the condenser is saturated, find the power per ton. Properties of Ammonia: h1=hf = 312.87 kJ/kg h2= 1665 kJ/kg At -18C hg = 1439.94 kJ/kgConsider the ideal vapor compression cycle operating between 1.4 bar and 9bar using R-125 as the refrigerant, which removes heat from a cold space at a rate of 100kW. If the evaporator outlet was suddenly superheated by 2℃ above saturation, what will be the resulting effect on the cycle? a.Refrigerant flowrate will decrease, Condenser duty will decrease b.Refrigerant flowrate will increase, Condenser duty will decrease c.Refrigerant flowrate will increase, Condenser duty will increase d.Refrigerant flowrate will decrease, Condenser duty will increaseGiven the T-s diagram of the vapor compression refrigeration cycle with 0.09 kg/s of refrigerant 134a as the working fluid, as shown, determine: a) The isentropic efficiency of the compressor, %. b) Cooler performance coefficient