2.36 Ammonia is heated in the evaporator of a refriger- ation system from inlet conditions of 10°F, 10% quality, to saturated vapor. The pressure remains constant during the process. For each pound, determine the changes in enthalpy and volume. [Ans: 505 Btu/lb; 6.55 ft³/lb]

2.36 Ammonia is heated in the evaporator of a refriger- ation system from inlet conditions of 10°F, 10% quality, to saturated vapor. The pressure remains constant during the process. For each pound, determine the changes in enthalpy and volume. [Ans: 505 Btu/lb; 6.55 ft³/lb]

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter2: Matter And Energy

Section: Chapter Questions

Problem 29RQ: If 3000 ft3 of air is crossing an evaporator coil and iscooled from 75F to 55F, what would be the...

See similar textbooks

Related questions

Q: Carbon dioxide (molar mass 44 kg/kmol) expands reversibly in a perfectly thermally insulated…

Q: A sealed rigid vessel has volume of 1 m3 and contains 2 kg of water at 100°C. The vessel is now…

A: Given:- T1=100°C T2=200°C m=2kg V=1m3 To find:- Pressure at which maximum temperature will be 200°C

Q: Determine the volume change, in ft3, when 1 lb of water, initially saturated liquid, is heated to…

Q: 4. A 100 liter tank contains a mixture of saturated liquid water and saturated steam at 370 °C. a)…

A: Answer: (a) If the volume of each phases are equal: ● The mass of liquid phase is 22.5938 kg. ● The…

Q: Two kg of oxygen

A: Given The mass of oxygen gas is m=2 kg. The pressure at state 1 is P1=1 bar. The volume at state 1…

Q: Determine the volume, in ft3, of 2 lb of a two-phase liquid–vapor mixture of Refrigerant 134A at…

A: As per given question We have to determine volume and pressure

Q: Calculate the increase of internal energy of the gas to two decimal places with the SI unit.

A: Given: Perfect gas Compression process P1=1 bar=100 kPa V1=0.084 m^3 P2=3.7 bar V2=0.033 m^3 Cp=1.02…

Q: 2. In the engine of a car that uses petrol as fuel, when the piston is at its highest position, air…

A: Given:P1=10 barT1=100°CT2=1500°C

Q: calculate the final pressure in bar to 3 decimal places.

A: For solution refer below images.

Q: 2. Using the Steam Table at initial pressure of 0.046 bar and final pressure of 0.107 bar, fınd the…

Q: Given: Ammonia, P = 1.05 bar, T = -39.7°C Find: u (kJ/kg) Your Answer:

Q: Carbon dioxide (molar mass 44 kg/kmol) expands reversibly in a perfectly thermally insulated…

A: Given: M=44 kg/kMolP1=3.7barV1=0.085m3V2=0.02 m3cv=0.63 kJ/kgK

Q: Carbon dioxide (molar mass 44 kg/kmol) expands reversibly in a perfectly thermally insulated…

A: Any thermodynamic process can be shown by the following equation: PVn=C As n varies, the process…

Q: If 2 bar of air at 27°C is heated to 177°C at constant volume, the pressure will be 1. 6.56 bar 2. 3…

A: Given, Initial pressure = P1 = 2 bar Initial temperature = T1 = 27 oC = 300 K Final temperature = T2…

Q: Water vapor is cooled in a closed, rigid tank from 440°C and 100 bar to a final temperature of…

Q: A space at sea level has a dry bulb temperature of 70 °F and 50% RH. Find the following in that…

A: Given data: DBT = 70 °F RH = 50 % To determine: WBT, Absolute humidity, Vapor…

Q: t=270°C s= 6.5 kJ/kg-K What is the state of the pure substance?

A: It is not necessary for a pure material to consist of only one element or compound. As long as the…

Q: after a series of state changes, the pressure and volume of 2.268 kg of nitrogen are each doubled.…

A: Given Mass, m = 2.268 kg Find The entropy

Q: The specific heat in kj / kg. C for a crude fraction with Specific gravity of 0.819 at 55.6 C is

A: Write the given data. SG=0.819T=55.6 °C

Q: 8. A cylinder contains gases with the following volumetric analysis: 13% CO2, 12% O2, and 75% N2.…

Q: Q2: The moist air exists at a total pressure of 1.01325 bar and 25° C dry bulb temperature. If the…

A: Given Data Td=25° C P=101.325 kPa Degree of saturation=50%

Q: 4. Four (4) moles of helium gas undergo the following cyclic process (A→B¬C→A). If 1 atm = 1.0 x 105…

Q: 1.09 m3 of a perfect gas at 1.6 bar and 1.78 deg C is compressed to a volume of 0.74 m3 and a…

Q: A quantity of a certain perfect gas is compressed from an initial state of 0.083 m3, 1 bar to a…

Q: Steam, initially at 700 lbf/in.2, 550°F undergoes a polytropic process in a piston–cylinder assembly…

A: Solution:

Q: Argon (molar mass 40 kg/kmol) compresses reversibly in an adiabatic system from 5 bar, 25 0C to a…

Q: A quantity of a certain perfect gas is compressed from an initial state of 0.082 m3, 1 bar to a…

A: Gas laws are important when it comes to the calculation of the pressure, volume, and temperature of…

Q: 28. Water vapor is cooled in a closed, rigid tank from 440°C and 100 bar to a final temperature of…

A: To find ; The final pressure of water vapor. Given that , The Initial Pressure is P1=100 bar. The…

Q: An ideal gas (at STP, standard temperature and pressure) occupies a volume of 22.4 liters. While…

A: As per given question V1=22.4L V2=32.4L We have to determine internal energy of gas

Q: Table 1: Case # along with the list of pressures P1 and P2 Case # P1 (kPa) P2 (kPa) 1 100 300 150…

Q: 0.2 m3 tank contains 2 kg of air at 280 K. Considering the air as an ideal gas determine (a) the…

Q: A quantity of a certain perfect gas is compressed from an initial state of 0.081 m, 1 bar to a final…

Q: Determine the phase of a substance: Ammonia at 30℃ and specific volume of 0.1 m^3/kg* a.…

Q: A quantity of a certain perfect gas is compressed from an initial state of 0.082 m3, 1 bar to a…

Q: 1- A steam turbine receives (600 kg/hr) of steam at (25 bar, 350 C°). At a certain stage of the…

Q: 1.26 cubic meter of a perfect gas at 1.6 bar and 18.1°C is compressed to a volume of 0.83 m³ and a…

A: It is very basic numerical of thermodynamics. Used concept is gas equation from state 1 to state 2

Q: Carbon dioxide (molar mass 44 kg/kmol) expands reversibly in a perfectly thermally insulated…

Q: 1. Determine the specific volume of water vapor in m/kg, at 200 bar and 520°C using (a) Ideal gas…

Q: A rigid tank of 1 m³ contains nitrogen gas (N2) at 600 kPa, 127 °C. By mistake someone let 0.5 kg of…

Q: 2. One kg of steam at 255.55 °C and with an enthalpy of 1873 kJ/kg is confined in a rigid container.…

A: Given data Mass of steam = 1 kg Temperature of steam = 255.5°C Enthalpy of steam = 1873 kJ/kg […

Q: 41.3g of water is contained in an 80 liter container. When the temperature is 150 ℃, find the…

Q: A 100 liter tank contains a mixture of saturated liquid water and saturated ste 370 °C. a) Find the…

Q: A rigid, well-insulated tank contains air. A partition in the tank separates 12 ft^3 of air at 14.7…

A: The temperature distribution represents the temperature at finite points on the surface. The…

Q: A quantity of a certain perfect gas is compressed from an initial state of 0.083 m3, 1 bar to a…

A: Given data Initial pressure (P1) = 1 bar Initial Volume (V1) = 0.083 m3 Final pressure (P1) = 3.8…

Q: 3.6 Determine the phase or phases in a system consisting of H.O at the following conditions and…

A: Note: We will answer the first 3 subparts of first question (3.6) since the exact question is not…

Q: A quantity of a certain perfect gas is compressed from an initial state of 0.081 m3, 1 bar to a…

Q: A closed vessel having a volume of 1.6 liters holds 3.4 x 10²² molecules of methanol vapor. For the…

Concept explainers

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.

Question

2.36 Ammonia is heated in the evaporator of a refriger-
ation system from inlet conditions of 10°F, 10% quality,
to saturated vapor. The pressure remains constant during
the process. For each pound, determine the changes in
enthalpy and volume. [Ans: 505 Btu/lb; 6.55 ft³/lb]

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.

Similar questions

One British thermal unit will raise the temperature of _____ 1b of water _____F.
Four pounds of a gas occupy 10 ft3. What would be itsdensity and specific gravity?
If 250(ft)3(s) of air at 122(°F) and approximately atmospheric pressure is preheated for a combustion process to 932(°F), what rate of heat transfer is required?
1.) While the pressure remains constant at 100 psia the volume of a system of air changes from 20 ft' to 10 ft'. What are (a) AU in Btu, (b) Q in Btu, (c) Wn, Btu
II. Constant Volume Process Problem: 4000 gal/min of saturated steam at 3.0 MPa undergoes a constant volume process at until the pressure becomes 4.0 MPa. Determine the following: A. Specific volume, m³/kg B. Temperature at point 1 and 2, °C C. Mass of steam, kg/s D. Au (kJ/kg), Ah (kJ/kg), and As(kJ/(kg-K)) E. Q (kW) F. Pv and ts diagram
3. A 2-kg steam water mixture at 1.0 MPaa is contained in an inflexible tank. Heat is added until the pressure rises to 3.5 MPaa and the temperature to 400 °C. Determine: a) Heat transferred (kJ), b) AH (kJ), c)AS (kJ/k)
Latent heat of fusion is the heat given up as a substance freezes. The latentheat of fusion for water is 144 British thermal units per pound (Btu/lb). Thismeans that 144 Btu are given up for each pound of water that freezes. Howmany British thermal units of heat are given up when 4,000 pounds of waterfreeze?
The air conditioning process in the humidifier, air at a dry bulb temperature of 20 ° C and RH of 15% increases the RH to 40%. determine the amount of water vapor added to the humidifier per kg of dry air = ...... (kg water / kg air).
! Required information NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Consider helium at 350 K and 0.75 m³/kg. Use dP = ()¸dT + (P),dv for calculations. The gas constant of helium is R= 2.0769 kPa-m³ /kg.K. Determine the change in pressure corresponding to an increase of 4 percent in specific volume at constant temperature. (You must provide an answer before moving on to the next part.) The change in pressure corresponding to an increase of 4 percent in specific volume at constant temperature is - kPa.
Question 2.8: Compressed air is commonly used to power a large variety of power tools. Lowe's sells an air compressor that can fill an 8-gallon tank to 160 psi. At a temperature of 70°F, determine the mass of the air inside a full 8-gallon tank. Let Patm = 14.7 psi. a) Use the ideal gas law (you will need to do a lot of unit conversions for this). [0.429 kg] b) Find the compressibility factor. How far off is your analysis above? [0.99]
m and 5 Kg Kg 2. Three liquids of different qualities, p1 = 1500 , V2 = .002 m3' Liters of water, are poured together into a 30 gallons tank, filling it. If Kg the resulting density of the mixture is 1,200 m3' find the respective quantities of liquids. Also, find the weight of the mixture.
whall Jui Spet250@alayen.edu.iq csf ci مطلوب Up load file 03\if consider the air ideal gas, 1.5kg of air with intail temperature & pressure of 200 c &160 kpa respectively. If the volume of system becomes 1.5 of general volume and temperature drops to 39 c. determine the final pressure of the air Q4 closed system of 2kg undergoes adiabatic process. The work done on the system is 30000 J. if the relation velocity during the process is (V2 V12= 216 ) the