Bundle: Electricity For Refrigeration, Heating, And Air Conditioning, 10th + Refrigeration And Air Conditioning Technology, 8th + Mindtap Hvac, 4 ... Whitman/johnson's Refrigeration And Air Condi
8th Edition
ISBN: 9780357261385
Author: Russell E. Smith
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
thumb_up100%
Chapter 24, Problem 1RQ
Which is not a pressure or force acting on a TXV diaphragm?
A. Head pressure
B. Evaporator pressure
C. Spring pressure
D. Bulb pressure
Expert Solution & Answer
To determine
The type of pressure or force that does not act on a TXV diaphragm.
Answer to Problem 1RQ
The type of pressure or force that does not act on a TXV diaphragm is Head Pressure.
Explanation of Solution
TXV is a thermostatic expansion valve. It is a component which is used in a refrigeration and air conditioning cycle. It is used for the expansion of refrigerant from the condenser pressure to the evaporator pressure. It controls the amount of refrigerant that which has to be fed from condenser to evaporator. Thermal sensors are installed in this type of expansion device, which maintains a constant superheat in the evaporator.
TXV expansion valve consists of a valve body, a diaphragm, spring, needle and seat, and different types of sensors. The diaphragm which is used in this expansion valve measures the evaporator pressure. The seat in the valve body of a TXV valve is stationary. The needle has an ability to move in the diaphragm. The pressure caused by the bulb acts on the diaphragm and from the other side, its pressure is applied by the evaporator and the spring. The diaphragm moves up and down due to these pressures applied by the different components of TXV. These pressure forces regulate the valve needle at a regular time to open and close.
Therefore, Evaporator pressure, Bulb pressure, and Spring pressure are the active forces which work to move the needle in a TXV diaphragm.
Conclusion:
The pressure or force that does not act on a TXV diaphragm is Head Pressure.
Want to see more full solutions like this?
Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
A tensile specimen made of hot-rolled AISI 1020 steel is loaded to point corresponding to a strain of 43%.
60
Su = 66 ksi
Stress σ (ksi)
40 B
20
0
0
0
T
H
Sy = 39 ksi
Se = 36 ksi
Hot-rolled 1020 steel
F
10 20 30 40
50 60 70 80 90 100 110 120 130 140 150 160
Strain € (%)
T
1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 2.1 2.2 2.3 2.4 2.5 2.6
Area ratio R
0.1
0.2
0.3
0.4
0.5
Area reduction A,
What value of strain is applicable to this location?
0.6
A tensile specimen made of hot-rolled AISI 1020 steel is loaded to point corresponding to a strain of 40%.
60
Su = 66 ksi
Stress σ (ksi)
S₁ = 39 ksi
40
Se = 36 ksi
Hot-rolled 1020 steel
20
0
10 20 30 40
50 60 70 80 90 100 110 120 130 140 150 160
Strain € (%)
0
1.1 1.2 1.3 1.4 1.5
1.6 1.7 1.8 1.9 2.0 2.1 2.2 2.3 2.4 2.5 2.6
Area ratio R
0.1
0.2
0.3
0.4
0.5
Area reduction A,
What value of area ratio is applicable to this location?
0.6
A tensile specimen made of hot-rolled AISI 1020 steel is loaded to point corresponding to a strain of 43%.
60
Su = 66 ksi
Stress σ (ksi)
20
Sy = 39 ksi
Se = 36 ksi
Hot-rolled 1020 steel
F
0
10 20 30
40 50 60
70 80 90 100 110 120 130 140 150 160
Strain € (%)
0
1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 2.1 2.2 2.3 2.4 2.5 2.6
Area ratio R
0.1
0.2
0.3
0.4
0.5
Area reduction A,
What value of area reduction is applicable to this location?
0.6
Chapter 24 Solutions
Bundle: Electricity For Refrigeration, Heating, And Air Conditioning, 10th + Refrigeration And Air Conditioning Technology, 8th + Mindtap Hvac, 4 ... Whitman/johnson's Refrigeration And Air Condi
Ch. 24 - Which is not a pressure or force acting on a TXV...Ch. 24 - The needle and seat of a TXV are normally made of...Ch. 24 - The TXV tries to maintain a constant _____in...Ch. 24 - The four types of charges that the TXV uses to...Ch. 24 - Prob. 5RQCh. 24 - When do some TXVs require an external an external...Ch. 24 - Draw a diagram showing how an external equalizer...Ch. 24 - The TXV responds to an increased heat load by A....Ch. 24 - The three factors that determine the capacity of a...Ch. 24 - Explain why the entering liquid pressure has no...
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
- Table of Measurements and Results: Reading m/s Ji- a (wh Nu h Re Nu Error% (C) (°C) 2 1 Discussion: 1-Estimate the heat transfer and experimental value of the heat transfer coefficient hex with its unit and Nusselt number Nu expl 2- Find the percentage error for the value of the experimental Nusselt number. 3-Draw the graph showing a relationship between the temperatures difference (T-T) and theoretical and experimental value of Nusselt number. 4-The forced convection heat transfer coefficient of a plate depends on which of the following: a-gravity. b-velocity of fluid. e-conductivity of fluid. d-conductivity of plate material. Experiment: Internal Forced convenction Heat trovate on now through t objectives. Study the convection heat transfer of air flow through stage Calculations. Q & (T-T) Vary Re Q. heup A (TT) (T. Te-T ASPL Nep Re 117 RITT 14 ' 14arrow_forwardIf AE = 1.6 m, ED = CD = 1.9 m and F = 3.1 kN, then find the magnitude of the force acting in EB. B 30° 30° C E D ED m DC m ♥F KNarrow_forwardAssume multiple single degree of freedom systems with natural periods T ∈ [0.05, 2.00] seconds with in- crement of period dT = 0.05 seconds. Assume three cases of damping ratio: Case (A) ξ = 0%; Case (B) ξ = 2%; Case (C) ξ = 5%. The systems are initially at rest. Thus, the initial conditions are u(t = 0) = 0 and ̇u(t = 0) = 0. The systems are subjected to the base acceleration that was provided in the ElCentro.txt file (i.e., first column). For the systems in Case (A), Case (B), and Case (C) and for each natural period compute the peak acceleration, peak velocity, and peak displacement responses to the given base excitation. Please, use the Newmark method for β = 1/4 (average acceleration) to compute the responses. Create three plots with three lines in each plot. The first plot will have the peak accelerations in y-axis and the natural period of the system in x-axis. The second plot will have the peak velocities in y-axis and the natural period of the system in x-axis. The third plot…arrow_forward
- Determine the resultant stress at points P and Q.arrow_forwardFor the notched specimen with h = 0.13 m and r =11 mm, calculate the nominal stress for F=5 kN. F h F 25 mm Please submit your answer in the units of MPa.arrow_forwardA tensile specimen made of hot-rolled AISI 1020 steel is loaded to point corresponding to a strain of 49%. 60 Su = 66 ksi Stress σ (ksi) Sy = 39 ksi 400B Se = 36 ksi Hot-rolled 1020 steel 20 F 0 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 Strain € (%) 0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 2.1 2.2 2.3 2.4 2.5 2.6 Area ratio R 0.1 0.2 0.3 0.4 0.5 Area reduction A, What value of Su is applicable to this location? 0.6arrow_forward
- A tensile specimen made of hot-rolled AISI 1020 steel is loaded to point corresponding to a strain of 40%. 60 Su = 66 ksi Stress σ (ksi) 40 20 Sy= = 39 ksi Se = 36 ksi Hot-rolled 1020 steel F | G | H 0 10 20 30 40 50 60 0 70 80 90 100 110 120 130 140 150 160 Strain € (%) ☐ T 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 2.1 2.2 2.3 2.4 2.5 2.6 Area ratio R 0.1 0.2 0.3 0.4 0.5 Area reduction A, What value of Sy is applicable to this location? 0.6arrow_forwardA vertical .2m by .2m square plate is exposed to saturated water vapor at atmospheric pressure. If the surface temperature is 80 degrees C and the flow is laminar, estimate the loal heat transfer coefficents at the middles and at the bottom of the plate.arrow_forwardA transformer that is 10 cm long, 6.2 cm wide, and 5 cm high is to be cooled by attaching a 10 cm by 6.2 cm wide polished aluminum heat sink(emissivity=.03) to its top surface. The heat sink has seven fins, which are 5 mm high, 2mm thick, and 10 cm long. A fan blows air at 25 degrees C parallel to the passages between the fins. The heat sink is to dissipate 12W of heat, and the base temp of the ehat sink is not to exceed 60 degrees C. Assuming the fins and the base plate to be nearly isothermal and the radiation heat transfer to be negligible, determine the minimum free-stream velocity the fan needs to supply to avoid overheating. Assume the flow is laminar over the entire finned surface of the transformer.arrow_forward
- I need a mechanical engineering expert to solve this question,no Ai pleasearrow_forwardCan you give me the meaning of Combination spanner and Give Examples of Spannersarrow_forwardHW8 A shaft fitted with a flywheel rotates at 650 r.p.m. and drives a machine. The torque of machine varies in a cyclic manner over a period of 2 revolutions. The torque rises from 650 N-m to 2200 N-m uniformly during 110° and remains constant for the following 270°. It then falls uniformly to 600 N-m during the next 100° and remains constant for the end cycle, the cycle being repeated thereafter. Determine the power required to drive the machine and percentage fluctuation in speed, if the driving torque applied to the shaft is constant and the mass of the flywheel is 180 kg with radius of gyration of 35 cm. HW9arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Refrigeration and Air Conditioning Technology (Mi...Mechanical EngineeringISBN:9781305578296Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill JohnsonPublisher:Cengage Learning
Welding: Principles and Applications (MindTap Cou...Mechanical EngineeringISBN:9781305494695Author:Larry JeffusPublisher:Cengage Learning
Automotive Technology: A Systems Approach (MindTa...Mechanical EngineeringISBN:9781133612315Author:Jack Erjavec, Rob ThompsonPublisher:Cengage Learning
Refrigeration and Air Conditioning Technology (Mi...
Mechanical Engineering
ISBN:9781305578296
Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher:Cengage Learning
Welding: Principles and Applications (MindTap Cou...
Mechanical Engineering
ISBN:9781305494695
Author:Larry Jeffus
Publisher:Cengage Learning
Automotive Technology: A Systems Approach (MindTa...
Mechanical Engineering
ISBN:9781133612315
Author:Jack Erjavec, Rob Thompson
Publisher:Cengage Learning
Mechanical SPRING DESIGN Strategy and Restrictions in Under 15 Minutes!; Author: Less Boring Lectures;https://www.youtube.com/watch?v=dsWQrzfQt3s;License: Standard Youtube License