The air in a room has a dry-bulb temperature of 90 F and a wet-bulb temperature of 60 F. Assume a pressure of 1 atm total pressure.
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A: The properties are calculated from the steam table. At the given temperature and specific volume,…
Q: Which of the following is the volume occupied by the refrigerant 134a with a mass of 12.4 kg at a…
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Q: 7-Nitrogen is present in a closed system at a pressure of 830 kPa and a temperature of 380°C. If…
A: Given data Initial pressure (P1)= 830 kPa Initial temperature (T1)=380 °C =653 K Final pressure…
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Q: DESCRIBE THE ENTROPY CHANGE OF PURE SUBSTANCES?
A: In this figure the change of entropy is explained with respect to temperature.
Q: (iv) Show that the Kelvin-Planck and the Clausius expressions of the second law are equivalent.
A: To Show:- Kelvin-Planck and Clausius expressions of the second law are equivalent.
Q: For a liquid vapor mixture, as you increase the temperature, the difference between the specific…
A: As per our guidelines we are supposed to solve only one question if multiple questions are asked .…
Q: Specific heat value at constant pressure (c_p) is function of temperature and given as 1/T where T…
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Q: What is the enthalpy of the 5 kg R-134a refrigerant in the container?
A: Option A is correct
Q: Calculate the data from the table of thermodynamic properties of CO2 as an ideal gas
A: For an ideal gas ( enthalpy and internal energy are linear function of temperature only )
Q: What is the specific enthalphy (kj/kg) and specific entrophy (kJ/kg-K) of a steam with specific…
A: What is the specific enthalpy (kj/kg) and specific entropy (kJ/kg-K)
Q: Which of the following is the correct definition of enthalpy. Pa. difference of internal energy and…
A: C. Sum of internal energy and product of pressure and volume.
Q: 1 pound mass of steam expands isentropically from 300psia and 600°F to atmosphere 14.696 psia. Use…
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Q: The isentropic equation of state for air as an ideal gas, gives p2/p1 =(c2/c1 )^(2/(y-1)) p2/p1…
A: From the gas equation, P1V1=mRT1P1=ρRT1From the isentropic…
Q: Determine the mass of ideal air inside the chamber at a volume of 10 m^3 , pressure of 3 bar and…
A: Given data: Pressure (P) = 3 bar = 3*105 Pa Volume of the chamber (V) = 10 m3…
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Q: standard atmospheric pressure and tdb = 25°C and 90% RH. Compute a.) dew point temperature b.)…
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Q: An empty greenhouse with a volume of 60m³ has cracks around doors and windows so that air can flow…
A: Given: Volume of green house room= 60m3 Pressure of room = Patm = 100kPa Initial temperature, T0=…
Q: First law of thermodynamics introduces the property of O a. Mass Pressure O C. Enthalpy O d.…
A: First law of thermodynamics says that energy can never be created nor be destroyed. It only can be…
Q: Water with a mass of 2,425 kg passes from a saturated liquid state to saturated vapor at a constant…
A: Mass of water, m=2.425 kg Pressure of water, P=100 Kpa
Q: A vessel of volume 0.03m3 contains dry saturated steam at 17 bar. Determine the mass of the steam in…
A: Mass of steam is given as m=Volume/Specific Volume Here as steam is dry saturated we have Specific…
Q: Evaluate the specific volume, in m3 /kg, and the specific enthalpy, in kJ/kg, of Refrigerant 134a at…
A: Given: The pressure of R134a, P = 10.3 bar The temperature of R134a, T = 35oC
Q: air enters an ideal nozzle at a pressure of 45 psig with a temperature of 1,340F. The pressure at…
A: Given Pressure,P1 = 45 psig = 310 kPa P2 = 14.925 psia = 103 kPa…
Q: Argon is confined in a frictionless piston-cylinder device surrounded by the atmosphere. Initially,…
A: The process considered is the expansion of the gas. (a) Constant pressure process is shown below,
Q: A spherical balloon has a diameter of 8 m and contains Helium gas at a temperature of 23 °C and a…
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Q: Specific heat value at constant pressure (c_p) is function of temperature and given as 1/T where T…
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Q: The specific enthalpy for steam at 5.18 bar and 523 °C is (to no d.p.] in (Insert units symbol)…
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Q: 1 kg of wet steam (has dryness fraction 52.16%) is heated at constant volume until it becomes…
A: Given - m = 1 kg Initial quality (x1) = 52.16 % = 0.5216 Final condition saturated vapor at P2 = 4…
Q: . A mixture of 14.7 psia and 68°F that is 30% by weight CO₂ and 70% by weight N₂ has a partial…
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Q: Which of the following statements best describe an adiabatic process undergone by a closed system?…
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Q: For which of the following processes does a gas do work? adiabatic expansion O isobaric compression…
A: Given: Processes for which gas does work.
Q: Explain enthalpy, entropy, and internal energy
A: All these three terms are property of a system.
Q: Determine the mass of ideal air inside the chamber at a volume of 15 m^3 , pressure of 5 bar and…
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Q: An insulated rigid tank initially contains 1.5 lbm of helium at 80°F and 50 psia. A paddle wheel…
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Q: Identify the Enthalpy of State 1 to 4 (h1, h2, h3 and h4)
A: It is asked to find the enthalpy at each state points
Q: 7. Consider heating 2 moles of steam from 1000 kPa and 200 °C to 500 °C at constant pressure.…
A: Given data: The number of moles of steam is n = 2 moles. The pressure of the steam is P = 1000 kPa.…
Q: b. Prove the following two themodynamic property relationships ). Where: T. P. V are temperature,…
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Q: Try to explain the characteristics of thermodynamic energy and enthalpy of ideal gas.
A: given; Try to explain the characteristics of thermodynamic energy and enthalpy of ideal gas.
Q: 20. Using the steam tables, what is the value of specific enthalpy of saturated liquid water at 200…
A: As per our guidelines we are supposed to answer only one question (in case of multiple questions…
Q: Task 3 A 3 m tank contains air at 15 C and 400 kPa is connected through a valve to another tank…
A: Given Data Volume of tank 1 is :V1=3 m3 Temperature of air in tank 1 is : T1=15°C Pressure in tank…
Q: 35 - What is the temperature of refrigerant 134a with a pressure of 1400 kPa and an enthalpy of…
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Q: alculate the amount of heat required to generate 3000 kg of dry saturated steam at a pressure of 8…
A: Properties of steam at 8 bar:Saturated Steam Temperature,Ts=448.57 K Latent Heat of Steam,hfg=2030.1…
Q: Calculate the energy requirement to raise the temperature of 1 kg of water from 60 ° C of water to…
A: mass of water= 1 kg ;Initial temperature =60°C ;Final temperature =90°C ; ∆T=Final temperature…
Q: Determine the change in enthalpy per Ib mass of nitrogen gas as its temperature changes from 500°F…
A: We know that Change in enthalpy is given by = mCp(T2-T1) m is mass Cp- specific heat at constant…
Q: **100. Beginning with a pressure of 2.20 X 10° Pa and a volume of 6.34 × 10-3 m², an ideal monatomic…
A: For adiabatic process,
Q: 19. A 10m3 vessel initially contains 5m3 of liquid water and 5m3 of saturated vapor at 100 kPa.…
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- The Sahara desert with a very arid climate is one of the hottest regions in the world. Its average temperature is above 30°C or 86°F. In a 24-hour period, the temperature can go from a day-time high of 95°F to a low of 32°F at night. (a) By how many Celsius degrees does the temperature fall in the 24-hour period? °C (b) By how many Kelvin degrees does the temperature fall in the 24-hour period? KWhat is the specific internal energy of water at 50°C with a specific enthalpy of 1500 kJ/kg? Report your answer to one decimal place using rounding.1. A saturated water vapor is in a tank with a volume of 2.5 ft. It has a pressure at 25 psia. Due to heat transfer, the temperature decreases to 75°F. This process is held at isochoric condition. Determine the following: a. Initial temperature (°F) of the steam; b. Final pressure (in psia) of the steam; c. Total mass (Ibm) of steam in the tank at initial condition; d. Volume (in ft) and mass (Ibm) of liquid water in the tank at final condition. 2. Eighteen kilograms of ethyne has a temperature of 55°C and 35 bar. What is the volume (in cm3) occupied by ethyne? Use Peng/Robinson equation.
- Question 1 5 pts The temperature of ambient air in a certain location is measured to be 8.88°C. Express this temperature in Rankine (R) units. (Use 2 decimal places for the final answer.) Question 2 5 pts The barometer of a mountain hiker reads 744.43 mbars at the beginning of a hiking trip and 635.15 mbars at the end. Neglecting the effect of altitude on local gravitational acceleration, determine the vertical distance (meters) climbed. Assume an average air density of 1.20 kg/m³. (Use 2 decimal places for the final answer.)What is the value of the maximum temperature in °C?What is the resulting gage pressure when one pound of air at a gage pressure of 15 torr and 95°C is heated at constant volume to 800°F? Choices: 28.49 psi 13.79 psi 0.55 psi 15.25 ps
- According to the figure (figure is in spanish), define the following terms:1. Dry bulb temperature2. Wet bulb temperature3. Relative Humidity4. Dew point temperature5. Specific humidity6. Enthalpy7. Specific volume Indicate the units in the International system and in the English system in each oneFor Questions 6 and 7 The dry-bulb temperature and wet-bulb temperature of a sample of air are 23°C and 18°C, respectively. The pressure of the air is 97 kPa. If the air was adiabatically saturated: Question 6 Calculate the humidity ratio in kg of vapor per kg of dry air. Round your answer to 5 decimal places. Add your answer Question 7 What is its degree of saturation in %? Round your answer to 0 decimal places. Add your answerAn unknown gas with a mass of 1.5 kg is contained in a bottle of 1.17 m3 at a temperature of 27 degrees Celsius and a pressure of 2 atmospheres (bar). If you know that the value of the general constant for gases is 8314 joules / kilogram degrees Kelvin. Calculate the gas constant and determine the type of gas. *
- 4. A gas at a temperature of 20°C and 1.5 bar occupies a volume of 0.105m'. If the gas is compressed to a pressure of 7.5 bar and volume of 0.04 m, what will be the final temperature-of the gas? (Ans. 285°C)NOTE: Complete solution and derivation of units. KJ A certain gas with Cp = 2.215 kg K KJ and R = 0.518 kg K expand from %3D 0.142 m3 and 300 °K to 0.425m3while the pressure remains constant at 106.869 KPa. Determine: a. T2 b. mass of gas C. Δh d. ΔυUsing the following information, determine the vapor pressure of water at 300 °C. Note: We started this problem in week 6 lecture 3. Please refer to the lecture to get started on this problem. You only need to show your work starting from where the lecture left off. H₂0 at T = 179.88 degrees C the vapor pressure is PSAT = 10 bar. The enthalpy of vaporization is 2014.59 kJ/kg V = 0.1944 m³/kg V¹ = 0.001127 m³/kg The equation we left off on in class was, cpf 1 [P² psat dpsat pi psat Tf 1 ∆vapH (TF 1 RAZ Ti dT T2a