r. The total lo
Q: GO A 52-kg mountain climber, starting from rest, climbs a vertical distance of 730 m. At the top,…
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Q: 2g of air in a piston cylinder is compressed isothermally. The initial temperature is 399 K the…
A: mass = 2 g = 0.002 kg initial temperature 399 K Initial pressure 7.1 bar = 710 kpa Final volume =…
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A: Refrigeration is basically cooling a particular space and maintaining the temperature lower the…
Q: Q4/ A wall (3m*2m) consist of 10 cm face brick with 15 cm concrete plaster. The outdoor temperature…
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Q: A steel billet of 2000 kg mass is to be coolec from 1250 K to 450 K. The heat released during this…
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Q: A heat pump absorbs 10 kW of heat from outside environment at 250 K While absorbing 15 kW of work.…
A: Given, Heat absorbed from outside environment = Q1 = 10 kW Work done = W = 15 kW Heat rejected to…
Q: A Carnot refrigerator reguires 1.3 kW per tonne of refrigeration to maintain a region at low…
A: Find the cop of refrigerator and heat pump also find higher temperature.
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Q: To sterilize a 50.0-g glass baby bottle, we must raise its temperature from 15.5°C to 95.0°C. How…
A: The given values are - m = 50gm=501000kgC = 840 J/kg°C∆T = Change in temperature = 95 - 15.5°C =…
Q: A piston cylinder containing 0.55 kg helium of 285 ⁰K receives heat at constant temp. until the…
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Q: 1. A scuba tank contains 1.5 kg of air. The air in the tank is initially at 15 °C. The tank is left…
A: Write the mass of air. m=1.5 kg Write the initial temperature of air. Ti=15 °C=15+273=288 K…
Q: refrigerator maintains a food compartment at 2°C by r e required power input to the refrigerator is…
A: given:Q1=420kj/minWinput=2.5kw
Q: A heat pump is absorbing heat from the cold outdoors and supplying heat to a house. The house is…
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Q: A water fountain is designed to cool water initially at 22.8∘C to a cool 7.7∘C at an average rate of…
A: Given data: Temperature T1 = 7.7°C Temperature T2 = 22.8°C Average Rate for cooling water v = 47…
Q: Water (T = 20°C) from a reservoir is pumped up at 5 kg/s through a 3-in Sch. 40 pipe connected to a…
A: we will use simple calorimetry for solving this question
Q: 11. A piston-cylinder assembly shown below is initially containing 2g of air at STP. Heat is then…
A: Given: The mass of air at STP, m = 2g The final temperature, T2 = 25 C The final pressure, P2 = 3…
Q: Determine the quantity (volume) of saline water in a steam generator. The heat energy of 1605 kJ is…
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Q: e. If the net heat transfer during the cyclic process i cess BC (Take R = 8.314 J/mol-K) TIK)A 500…
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Q: Solar thermal water heater is feeding a water tank of 0.32 m. The final temperature is maintained at…
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Q: One of the Computer company in the US uses carnot heat pump to be used for heating its office and…
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Q: Q2) Water is being heated in a closed insulated pan stirred by a paddle wheel. During the process…
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Q: You are considering two heaters in your house which must provide 10kW of heating. You expect to run…
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Q: A large fridge freezer is to extract 80 kJ of energy every second from inside of the fridge,…
A: Given data: A large freezer Extraction of heat Temperature maintained at lower side Outside…
Q: A: A heat engine is working between the starting temperature limits of T, and T; of rwo bodies.…
A: Intial temperature of two bodies T1 and T2Mass flow rate =m kg/secSpecific heat at constant pressure…
Q: 1. 1.G5 1b oF gas is stored in a tank op 2t° . If the internal energy decre ases by 27.4 BTU as…
A: given data- mass of the gas = m = 1.63 lb change in internal energy, dU = 27.4 BTU change in…
Q: A heat pump absorbs 10 kW of heat from outside environ- ment at 250 K while absorbing 15 kW of work.…
A: Useful data from the given question is as below, Heat absorbed from low-temperature reservoir = QL =…
Q: Determine the quantity (volume) of saline water in a steam generator. The heat energy of 1526 kJ is…
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Q: A piston cylinder device is fitted with stops at the top. Initially.5lbs of R-134a is in the tank at…
A: Given: The mass of refrigerant, m = 5 lbs The initial temperature of the tank, T1 = 80 F = 26.66°C…
Q: 8.One kg of air is heated in a closed rigid vessel such that its temperature changes from 270C to…
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Q: 5. A fluid enters a machine at 170 m/s, 800 kPa, and with a specific volume of 0.3 m/kg. The…
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Q: 300 kg of fruits are supplied to a cold storage at 25°C The cold storage is maintained at -5°C and…
A: Data given- m = 300 kg T1 = -5° C = 268 K T2 = 25° C = 298 K latent heat of freezing = 105 kJ/kg…
Q: In a insulated rigid container there is helium gas being stirred by a paddle wheel using 0.02 hp for…
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Q: A man is trapped in a 1000 m3 sealed basement that is initially at 30°C and atmospheric pressure. He…
A: We need to understand first whether it will heat the room or cool the room. The refrigerating effect…
Q: A piston cylinder device is fitted with stops at the top. Initially .5lbs of R-134a is in the tank…
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Q: 's claim? ng point. N An ideal gas is confined to a cylindrical container with a movable piston on…
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Q: Heat is being generated within a 6 m long stainless steel cylinder with the amount of 2kW. The…
A: Radius was not given so 1 mm is assumed (0.1 cm radius = 0.2 cm diameter) formula for surface…
Q: Heat at a rate of 5 kW is being uniformly produced in a solid cylinder. The cylinder has a diameter…
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Q: A Carnot engine receives 130BTU of heat from a hot reservoir at 700degF and reject 49 BTU of heat…
A: Given data: The heat received, Q1=130 Btu. The heat rejected, Q2=49 Btu. The temperature of the hot…
Q: The temperature of a gym is wanted to be kept at 297K. The environment is 312 K and the gym unit has…
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Q: A heat reservoir at 900 K is brought into contact with the ambient at 300 K for a short time. During…
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Q: Water is heated with the aid of a diesel furnace. 2kg of diesel fuel is required for every 300…
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Q: A solar collector absorbed 40 W/m2 heat from the atmosphere. This is equal to the convection brought…
A: Given data, q = Q/A = 40 W/m² T1=40°C T2=80°C
Q: A steel billet of 2000 kg mass is to be cooled from 1250 K to 450 K. The heat released during this…
A: Given:mass, m=2000 kgT2=1250 KT1=450 K
Q: Find the change of internal energy in kJ when 1.0 kg of air is heated from OC to 100C? The constant…
A: Givenm=1kgT1=0oCT2=100oCCV=0.718 kJ/kgK
Q: A frietionless piston-cylinder device contains Ikg ol woter at 2óc ,300 kfa. Heat is transferred to…
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Q: A fan that consumes 20W of electric power is discharges air from ventilated room at a rate of 0.25…
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Q: storage is maintained at -5°C and the fruits get cooled to the storage temperature in 10 hours The…
A: heating capacity = heat removed for lowering temp + latent heat
Q: maximum useful work that can be obtained form the heat source
A: Given; A source at a temperature of ;T1=600 KIt provides , Q1=2000 kJThe temperature of environment…
Q: Let the cylinder (hollow) in the figure has variable heat generation which is
A: Given Data: The inner radius of the hollow cylinder is r The outer radius of the hollow cylinder is…
A heat reservoir at 900 K is brought into contact with the ambient at 300 K for a short time Dunng this period 9000 kJ of heat is lost by the heat reservoir. The total loss inavailability due to this process is
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- 3.17 A 1.4-kg aluminum household iron has a 500-W heating element. The surface area is . The ambient temperature is 21°C, and the surface heat transfer coefficient is . How long after the iron is plugged in does its temperature reach 104°C?The tip of a soldering iron consists of a 0.6-cm- diameter copper rod, 7.6 cm long. If the tip must be 204C, what are the required minimum temperature of the base and the heat flow, in watts, into the base? Assume that h=22.7W/m2KandTair=21C.A steel billet of 2000 kg mass is to be cooled from 1250 K to 450 K. The heat released during this process is to be used as a source of energy. The ambient temperature is 303 K and specific heat of steel is 0.5 kJ/kgK. The available energy of this billet is?
- A water fountain is designed to cool water initially at 22.8∘C to a cool 7.7∘C at an average rate of 47 L/hr. It is expected that the water reservoir will absorb 46 W of heat from the surroudings. The refrigeration system has a COP of 1.79. (Assume the water has a constant specific heat.) What is the rate of heat absorption for this water fountain?An automobile engine operates with a thermal efficiency of 35%. Assumed machine car cooler (AC) has a coefficient of performance = 3, and cools the room in the car using the work of the car engine. What is the energy of the material fuel expended to move 1 kJ.give two example and explanation of thermal energy transformation at constant volume, pressure and heat that happen in daily
- (a) Calculate the rate of heat transfer by radiation from a car radiator at 110°C into a 50.0ºC environment, if the radiator has an emissivity of 0.750 and a 1.20-m^2 surface area. (b) Is this a significant fraction of the heat transfer by an automobile engine? To answer this, assume a horsepower of 200hp (1.5kW) and the efficiency of automobile engines as 25%.300 kg of fruits are supplied to a cold storage at 25°C The cold storage is maintained at -5°C and the fruits get cooled to the storage temperature in 08 hours The latent heat of freezing is 105 kJ/kg and specific heat of fruit is 1.256 kJ/kg K. Find the refrigeration capacity of the planıThe temperature of a gym is wanted to be kept at 297K. The environment is 312 K and the gym unit has a heat input of 80kW from this environment. 8 kW of heat is produced per unit time inside the gym. The total electrical energy given to the electronic devices in the gym is 292kW. With a heat machine operating between 312K environment and 1200K hot heat source, it is desired to obtain both the electricity requirement of the center and the work required to operate the cooling machine.600Kw of heat is drawn.A) If the thermal efficiency of the heat engine is 55%, find W,W1,Q2,Q3,Q4 and the cooling coefficient of the influence cooling machine and the efficiency of the system.B)f the gym and the cooling machine are considered as the control area, is it possible to release Q3=560KW heat from the cooling machine to the environment? Show by calculating.
- A constant temperature of -125 C must be maintained in a cryogenic experiment, although it gains 120 W due to heat transfer. What is the smallest motor you would need for a heat pump absorbing heat from the container and rejecting heat to the room at 20 CA 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 steel billet of 2000 kg mass is to be cooled from 1250 K to 450 K. The heat released during this process is to be used as a source of energy. The ambient temperature is 303 K and specific heat of steel is 0.5 kJ/kgK.find out the available energy of this billet ?