Many home heating systems operate by pumping hot water through radiator pipes. The flow of the water to different "zones" in the house is controlled by zone valves that open in response to thermostats. The opening and closing of a zone valve is commonly performed by a wax actuator, as shown in the diagram. When the thermostat signals the valve to open, a dc voltage of 29.8 V is applied across a heating element (resistance R= 208 Q) in the actuator. As the wax melts, it expands and pushes a cylindrical rod (radius 2.00 mm) out a distance 1.00 cm to open the zone switch. The actuator contains 3.10 mL of solid wax of density 0.900 g/cm3 at room temperature (20.0°C). The specific heat of the wax is 0.800 J/(g.°C), its latent heat of fusion is 60.0 J/g, and its melting point is 90.0°C. When the wax melts its volume expands by 15.0%. How long does it take until the valve is fully open? Wax Heating element Cylindrical rod To thermostat Rubber diaphragm Wax actuator
Many home heating systems operate by pumping hot water through radiator pipes. The flow of the water to different "zones" in the house is controlled by zone valves that open in response to thermostats. The opening and closing of a zone valve is commonly performed by a wax actuator, as shown in the diagram. When the thermostat signals the valve to open, a dc voltage of 29.8 V is applied across a heating element (resistance R= 208 Q) in the actuator. As the wax melts, it expands and pushes a cylindrical rod (radius 2.00 mm) out a distance 1.00 cm to open the zone switch. The actuator contains 3.10 mL of solid wax of density 0.900 g/cm3 at room temperature (20.0°C). The specific heat of the wax is 0.800 J/(g.°C), its latent heat of fusion is 60.0 J/g, and its melting point is 90.0°C. When the wax melts its volume expands by 15.0%. How long does it take until the valve is fully open? Wax Heating element Cylindrical rod To thermostat Rubber diaphragm Wax actuator
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
Related questions
Question
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!
Trending now
This is a popular solution!
Step by step
Solved in 5 steps with 5 images
Recommended textbooks for you
College Physics
Physics
ISBN:
9781305952300
Author:
Raymond A. Serway, Chris Vuille
Publisher:
Cengage Learning
University Physics (14th Edition)
Physics
ISBN:
9780133969290
Author:
Hugh D. Young, Roger A. Freedman
Publisher:
PEARSON
Introduction To Quantum Mechanics
Physics
ISBN:
9781107189638
Author:
Griffiths, David J., Schroeter, Darrell F.
Publisher:
Cambridge University Press
College Physics
Physics
ISBN:
9781305952300
Author:
Raymond A. Serway, Chris Vuille
Publisher:
Cengage Learning
University Physics (14th Edition)
Physics
ISBN:
9780133969290
Author:
Hugh D. Young, Roger A. Freedman
Publisher:
PEARSON
Introduction To Quantum Mechanics
Physics
ISBN:
9781107189638
Author:
Griffiths, David J., Schroeter, Darrell F.
Publisher:
Cambridge University Press
Physics for Scientists and Engineers
Physics
ISBN:
9781337553278
Author:
Raymond A. Serway, John W. Jewett
Publisher:
Cengage Learning
Lecture- Tutorials for Introductory Astronomy
Physics
ISBN:
9780321820464
Author:
Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina Brissenden
Publisher:
Addison-Wesley
College Physics: A Strategic Approach (4th Editio…
Physics
ISBN:
9780134609034
Author:
Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field
Publisher:
PEARSON