the irreversibility (in W) due to heat
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Q: It is cooled by passing air over the glass plate at 600°C. The heat transfer coefficient is 5 W/…
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A: Solution:
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A: The significance of pinch point is explained as under,
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A: Given: The inlet area, A = 7000 in^2 = 4.516 m^2 The inlet Mach number, M1 = 0.8 The flying Mach…
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Q: Which of the following statements is CORRECT? Don't Know A force can be moved along its line of…
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A: Given: The air pressure, P = 1.1 MPa The diameter of plunger, d = 12 cm = 0.12 m The stroke, L = 4…
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Q: DETERMINE THE PRESSURE TO HAVE A DISTANCE: 600m CONSISTENT AND COMPATIBLE FLOW RATE Raver ELEVATION:…
A: Given: Total length of the pipe: →L=600 m Height of the water tank from the river surface: →H=100 m…
Q: Problem 7.56 If the system is rotating clockwise with the angular speed @ = 10 rad/s in the position…
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Q: For the Mechanical Translation system shown below. If C= 5 N.s/m, K-6 N/m, and M= 6 kg, find F(a) +…
A: Given Data: Mass (m)=6 kg Spring constant (K)=6 Nm Mechanical Impedance (C)=5 N.sm
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A: given; weighting of tube(w)=0.344pound/fttotal length of tube(l)=42.5ftnet weight of tube(wnet)=?
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A: Given: The cross-section area is given below,
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A: (a) Write the given data. k=8000 N/mm=20 kgc=40 Ns/mx0=0.1 mv0=0Ft=100cos10t
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A: Given data: M=1 Kg c=5Kg/s K=100KN/m
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Q: A heat pump is a device that transfer thermal energy from a lower temperature to a higher…
A: Heat Pump : Definition: A heat Pump is also called as heat engine which works in reverse direction…
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A: Given data- 1.cam running at =500 rpm 2.force on helical spring =80 lb-160 lb 355.8 N-711.7 N…
Q: Consider two liquids of densities p₁ = 1000 kg/m³ and p₂ = 800 kg/m³ that are initially flowing in…
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Q: Consider two liquids of densities p₁ = 1000 kg/m³ and p2 = 800 kg/m³ that are initially flowing in…
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Q: The force P is applied to the 50-kg block whe. rest. Determine the magnitude and directio friction…
A: Given data as per questionMass of block, m=50 kgμs=0.25μk=0.20
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Q: A pipe has an initial radius of r1, which then changes to a radius of r2. The velocity of the water…
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Q: Use graph paper to draw simplified sketch of the gear and the rack shown in problem. What are the…
A: Draw the above diagram on a graph paper by using scale.
Q: A heat pump is a device that transfer thermal energy from a lower temperature to a higher…
A: Given question: A heat pump is a device that transfers thermal energy from a lower temperature to a…
Q: A brake drum with 0.4m diameter is applied with force 600N where the angle is 180°, the coefficient…
A: Givend=0.4mF=600Nθ=180o=π radianμ=0.4
Q: 5. How we will measure the flow rate? Explain any one-flow rate-measuring instrument.
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Q: the diagram). The figure shows a rigid link AB of length 2 m which rotates anticlockwise about a…
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Q: A heat pump is a device that transfer thermal energy from a lower temperature to a higher…
A: Given question: A heat pump is a device that transfer thermal energy from a lower temperature to a…
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- A plane wall, 7.5 cm thick, generates heat internally at the rate of 105 W/m3. One side of the wall is insulated, and the other side is exposed to an environment at 90C. The convection heat transfer coefficient between the wall and the environment is 500 W/m2 K. If the thermal conductivity of the wall is 12 W/m K, calculate the maximum temperature in the wall.A heat engine receives a heat-transfer at the rate of 2 MW at a high temperature of 750 °C. The engine releases energy to its surrounding at 300 K and work is produced at a rate of 1200 kW. What are 1. The energy released to the ambient surroundings? 2. The efficiency of the engine?A Carnot heat engine receives 650 kJ of heat from a source of unknown temperature and rejects 250 kJ of it to a sink at 240C. Determine the thermal efficiency of the heat engine.
- A room is heated by an electrical space heater operating at 1500W and its temperature is 800 C. The heat transfer convective coefficient is 6 W/m^2 C. What is the room temperature given that the space heater surface is 0.325m^2?A household refrigerator draws 113.9 W of electricity in order to keep its refrigerated compartment at a steady 4.7 ºC; the insulation of the compartment is such that heat passes from the room to the refrigerated compartment at 53.9 kJ per minute. Rejected heat is dumped to the room in which the refrigerator is placed. By comparison to the coefficient of performance for an ideal refrigerator, determine the maximum room temperature in which the refrigerator could operate. Give your answer in ºC to 1 decimal place.A refrigerator is connected to a generator powered by a fuel with a calorific value of 35000 kJ/kg and a density of 0.85 g/cm3 . The inside temperature of the refrigerator is 0°C, and the outside temperature is 20°C. a. How much work is required to freeze 500 g of water? ΔfreezingH° = 6.02 kJ mol– 1 ) b. How much internal energy change occurs during the process? c. Since the generator consumes 5 L of fuel per hour, calculate the thermal efficiency of this engine.
- A heat engine receives heat from a heat source at 1200°C and has a thermal efficency of 40 percent. The heat engine does maximum work equal to 500 kJ. Determine the heat supplied to the heat engine by the heat source, the heat rejected to the heat sink, and the tmeperature of the heat sink.The interior of a refrigerator has a surface area of 6.2 m2 . It is insulated by a 2 cm thick material that has a thermal conductivity of 0.0199 J/m · s · ◦ C. The ratio of the heat extracted from the interior to the work done by the motor is 5.5 % of the theoretical maximum. The temperature of the room is 27.6 ◦C, and the temperature inside the refrigerator is 6.6 ◦C. Determine the power required to run the compressor. Answer in units of W.A Carnot heat pump is to be used to heat a house and maintain it at 25°C in winter. On a day when the average outdoor temperature remains at about 2°C, the house is estimated to lose heat at a rate of 55,000 kJ/h. If the heat pump consumes 4.8 kW of power while operating, determine how long the heat pump ran on that day.
- Water flows through a pipe at an average temperature of T = 50°C. The inner and outer radii of the pipe are r1 = 6 cm and r2 = 6.5 cm, respectively. The outer surface of the pipe is wrapped with a thin electric heater that consumes 300 W per m length of the pipe. The exposed surface of the heater is heavily insulated so that the entire heat generated in the heater is transferred to the pipe. Heat is transferred from the inner surface of the pipe to the water by convection with a heat transfer coefficient of h = 55 W/m2· °C. Assuming constant thermal conductivity and one-dimensional heat transfer, express the mathematical formulation (the differential equation and the boundary conditions) of the heat conduction in the pipe during steady operation and obtain temperature distribution in pipe.A Carnot heat pump is to be used to heat a house and maintain it at 25°C in winter. On a day when the average outdoor temperature remains at about 2°C, the house is estimatedto lose heat at a rate of 55 000 kJ/h. If the heat pump consumes 4.8 kW of power while operating, determine: (a). how long the heat pump ran on that day(b). The total heating costs, assuming an average price of R 2.35/kWh for electricity, and(c). The heating cost for the same day if resistance heating is used instead of a heat pump.A tank containing 200 kg of water was used as a constant temperature heat bath. How long would it take to heat the bath from 20°C to 25°C with a 250-W immersion heater? Neglect the heat capacity of the tank frane and any heat loss to the air. 3.2 hrs 3.7 hrs 4.6 hrs 4.9 hrs 5.8 hrs