Refrigeration and Air Conditioning Technology (MindTap Course List)
8th Edition
ISBN: 9781305578296
Author: John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
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
##2# Superheated steam powers a steam turbine for the production of electrical energy. The steam expands in the turbine and at an intermediate expansion pressure (0.1 Mpa) a fraction is extracted for a regeneration process in a surface regenerator. The turbine has an isentropic efficiency of 90%
Design the simplified power plant schematic
Analyze it on the basis of the attached figure
Determine the power generated and the thermal efficiency of the plant
### Dados in the attached images
### To make a conclusion for a report of an experiment on rockets, in which the openrocket software was used for the construction and modeling of two rockets: one one-stage and one two-stage.
First rocket (single-stage) reached a maximum vertical speed of 100 m/s and a maximum height of 500 m
The second rocket (two-stage) reached a maximum vertical speed of 50 m/s and a maximum height of 250 m
To make a simplified conclusion, taking into account the efficiency of the software in the study of rockets
Determine the coefficients of polynomial for the polynomial function of Cam profile based on
the boundary conditions shown in the figure.
S
a
3
4
5
C₁
(+)
Ꮎ
В
s = q + q { + c f * + q € * + q ( +c+c+c
6
Ꮎ
+C5
+C
β
В
В
0
cam angle 0
B
7
(
Chapter 24 Solutions
Refrigeration and Air Conditioning Technology (MindTap Course List)
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
- ### Superheated steam powers a steam turbine for the production of electrical energy. The steam expands in the turbine and at an intermediate expansion pressure (0.1 Mpa) a fraction is extracted for a regeneration process in a surface regenerator. The turbine has an isentropic efficiency of 90% Design the simplified power plant schematic Analyze it on the basis of the attached figure Determine the power generated and the thermal efficiency of the plant ### Dados in the attached imagesarrow_forwardThe machine below forms metal plates through the application of force. Two toggles (ABC and DEF) transfer forces from the central hydraulic cylinder (H) to the plates that will be formed. The toggles then push bar G to the right, which then presses a plate (p) into the cavity, thus shaping it. In this case, the plate becomes a section of a sphere. If the hydraulic cylinder can produce a maximum force of F = 10 kN, then what is the maximum P value (i.e. Pmax) that can be applied to the plate when θ = 35°? Also, what are the compressive forces in the toggle rods in that situation? Finally, what happens to Pmax and the forces in the rods as θ decreases in magnitude?arrow_forwardDetermine the magnitude of the minimum force P needed to prevent the 20 kg uniform rod AB from sliding. The contact surface at A is smooth, whereas the coefficient of static friction between the rod and the floor is μs = 0.3.arrow_forward
- Determine the magnitudes of the reactions at the fixed support at A.arrow_forwardLet Hill frame H = {i-hat_r, i-hat_θ, i-hat_h} be the orbit frame of the LMO satellite. These base vectors are generally defined as:i-hat_r = r_LM / |r_LM|, i-hat_theta = i-hat_h X i-hat_r, i-hat_h = r_LM X r-dot_LMO /( | r_LM X r-dot_LMO | ) How would you: • Determine an analytic expressions for [HN]arrow_forwardDe Moivre’s Theoremarrow_forward
- hand-written solutions only, please.arrow_forwardDetermine the shear flow qqq for the given profile when the shear forces acting at the torsional center are Qy=30Q_y = 30Qy=30 kN and Qz=20Q_z = 20Qz=20 kN. Also, calculate qmaxq_{\max}qmax and τmax\tau_{\max}τmax. Given:Iy=10.5×106I_y = 10.5 \times 10^6Iy=10.5×106 mm4^44,Iz=20.8×106I_z = 20.8 \times 10^6Iz=20.8×106 mm4^44,Iyz=6×106I_{yz} = 6 \times 10^6Iyz=6×106 mm4^44. Additional parameters:αy=0.5714\alpha_y = 0.5714αy=0.5714,αz=0.2885\alpha_z = 0.2885αz=0.2885,γ=1.1974\gamma = 1.1974γ=1.1974. (Check hint: τmax\tau_{\max}τmax should be approximately 30 MPa.)arrow_forwardhand-written solutions only, please.arrow_forward
- In the bending of a U-profile beam, the load path passes through the torsional center C, causing a moment of 25 kNm at the cross-section under consideration. Additionally, the beam is subjected to an axial tensile force of 100 kN at the centroid. Determine the maximum absolute normal stress.(Check hint: approximately 350 MPa, but where?)arrow_forward### Make an introduction to a report of a rocket study project, in the OpenRocket software, where the project consists of the simulation of single-stage and two-stage rockets, estimating the values of the exhaust velocities of the engines used, as well as obtaining the graphs of "altitude", "mass ratio x t", "thrust x t" and "ψ × t".arrow_forwardA 6305 ball bearing is subjected to a steady 5000-N radial load and a 2000-N thrust load and uses a very clean lubricant throughout its life. If the inner race angular velocity is 500 rpm find The equivalent radial load the L10 life and the L50 lifearrow_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