A liquid R-134a bottle has an internal volume of 0.001 m3 . initially it contains 0.4 kg of R-134a (saturated mix) at 26oC. A valve is opened and R-134a vapor only is allowed to escape slowly such that temperature remains constant until the mass of R-134a remaining is 0.1kg. find heat tranfer necessary with the surroundings to maintain the temperature and pressure of R-134a constant.

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A: First Law of thermodynamics: Energy can never be created nor be destroyed but it can be transferred…

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Q: Mr Luda wants to understand further about a newly created gas. The gas is initially at a pressure of…

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Q: We have refrigerant R-134a at a temperature of 30 C and a specific enthalpy of 127 kJ/kg. Find the…

A: According to the given data A refrigerant R-134a is at T= 30 C h=127 kJ/kg. we need to find The…

Q: Q3 A partition is placed between two tank as shown in figure. Initially tank 1 contains 3.4 kg of…

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Q: A 200 liter tank initially contains water at 1000 kPa and 1% quality. There is a heat transfer to…

A: Given that: V = volume of the tank = 200 liters P1 = initial pressure = 1000 kPa x1 = initial…

Q: Determine the change in Enthalpy, no need to answer question in picture, that's just for the context…

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Q: A quantity of ideal gas with an initial condition of 0.1 m3 and 735 kPa expands isothermally to 118…

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Q: An ideal gas enclosed in a 1.77ft3 rigid tank initially at 70°C and 0.93kg/cm2 . Find the…

A: Given data,  V1= 1.77 ft3 = V2 (volume of tank is going to be constant.)  T1= 70°C = 343 K  P1= 0.93…

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Q: The cooling system of a car engine contains 20.0 L of water (1L(1L of water has a mass of 1kg1kg ).…

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Q: Estimate the quality, x of refrigerant-134a at 800 kPa and 0.025645 m3/kg

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Q: Diagram Q ww Water, 90°C x = 0.10 1-kg of water that is initially at 90°C with a quality of 10…

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Q: A/ Find the missing properties: P (kpa) 320 u (KJ/kg) 0.5 Phase description Material T('C) X R-134…

A: We are suppose to solve only one question. Please post other question as a separate question.

Q: Saturated Refrigerant-134a vapor Saturated liquid A tank occupied by saturated liquid-vapor mixture…

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Q: Water with a quality of 53.5% and pressure of 200 kPa is inside a rigid tank.The tank is heated by…

A: Given, Quality of the water (x)=0.535 Pressure of water=200kPa heat supplied by the heater=120W…

Q: Thermodynamics problem. Two kilograms of water at 125KPa are completely vaporized. Calculate the…

A: For water m = 2 kg P = 125 kPa x1 = 0, x2 = 1 It is required to determine V1 and V2

Q: Steam is expands from a pressure of 4 bar and 70°C to a pressure of 1.4 bar. If the expansion is n…

A: The answer is in below steps

Q: A 2-m3 tank initially contains a mixture of saturated-vapor steam and saturated-liquid water at 2000…

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Q: how would you find the conditions of Saturated vapor at 1 MPa on a Mollier Chart

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Q: Q.1) An insulated piston-cylinder de vice contai ns 10 L of saturated liquid water at a constant…

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Q: 0.75 Ibm of oxygen is initially at 30 psi and 50°F. The oxygen expands in an isobaric process until…

A: Given data: Mass of Oxygen, m=0.75 lbInitial pressure, P1=30 psiInitial temperature, T1=50°FFinal…

Q: Consider a rigid container which contains 3 kg of an ideal gas at 300 kPa and 50°C. Yes connected to…

A: Given Data The mass of the rigid container is: m1=3 kg The initial pressure is: P1=300 kPa The…

Q: Water vapor at the throttling valve inlet in a piping circuit at 4MPa pressure at 300 °C is at the…

A: Given Data State 1: 4 MPa, 300°C Throttling process

Q: Saturated liquid water at 2.0 MPa is throttled to 20 kPa. Determine the fraction of water evaporated…

A: GivenP1=2MPa at Saturated liquid waterafter throttled P2=20kPa

Q: Two tanks connected with 2. each other as shown. The first one has 2 kg of water at P=200 kPa, V, =…

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Q: Find the mass in metric tons per day of at -5 °C that would theoretically made in a refrigerating…

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Q: enthalphy of 3015.2 Kj/kg undergoes a constant pressure at 1 mpa until the enthalphy becomes 2100…

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Q: Determine the type of steam, given: Temperature: 156°C Internal Energy: 1550 kJ/kg O Wet Vapor

A: For first question Given data, T = Temperature of the steam = 156 oC u = Internal energy = 1550…

Q: A container contains (L-V) mixture of R-22 at 5bar. The mass of saturated liquid in the container is…

A: Given that  A container contains (L-V) mixture of R-22 at 5bar. The mass of saturated liquid in the…

Q: Find the enthalpy of steam at 0.40 MPa with specific volume of 0.41 cubic m per kg

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Q: A vessel of 2 m3-capacity is filled with 0.02 m3 of liquid water and 1.98 m3 of water vapor at…

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Q: A piston-cylinder device initially contains 0.82 m3 of air at 212 kPa and 78.2oC. The air is now…

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Q: A 0.76m^3 tank is to be filled with saturated vapor at 12.34 bar. Determine the mass necessary and…

A: Given Data: The volume of the tank, V=0.76 m3 Pressure, P=12.34 bar

Q: Q3/A piston-cylinder contains air at 150Kpa and 400 C after cool air to temperature of 20 C.…

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Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.