Why is the thermal conductivity of superinsulation orders of magnitude lower than the thermal conductivity of ordinary

Question:

Why is the thermal conductivity of superinsulation orders of magnitude lower than the thermal conductivity of ordinary insulation?

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For book-img-for-question

Fundamentals of Thermal-Fluid Sciences

ISBN: 978-0078027680

5th edition

Authors: Yunus A. Cengel, Robert H. Turner, John M. Cimbala

See More Books

Question Posted: Dec 04, 2018 11:44 AM

See More Questions

Liquid helium is stored in containers fitted with 7-cm-thick "superinsulation" consisting of a large number of layers of very thin aluminized Mylar sheets. The rate of evaporation of liquid in a...
A hollow aluminum sphere, with an electrical heater in the center, is used in tests to determine the thermal conductivity of insulating materials. The inner and outer radii of the sphere are 0.15 and...
The thermal conductivity of silver at 212F is 238 Btu/(h ft F). What is the conductivity in SI units? GIVEN Thermal conductivity of silver (k) = 238 Btu/(h ft F)
Question #1 The following table indicates the net cash flows of a capital asset: Year Net Cash Flow 0 $-8,400 1 $5,900 2 $6,200 Do not enter dollar signs or commas in the input boxes. Use the...
Starship Enterprises enters into the following transactions during 2017 and 2018: 2017 Jan. 1: Purchased $100,000 face value of Northern Lights Inc. bonds at face value. The newly issued bonds have...
A cord of length 1.5 m is fixed at both ends. Its mass per unit length is 1.2 g/m and the tension is 12 N. (a) What is the frequency of the fundamental oscillation? (b) What tension is required to...
The following are 42 consecutive pizza breads baked by a newly improved oven model during 6...
Brendan Coleman created and marketed Clinex, a software billing program. Later, Retina Consultants, P. C., a medical practice, hired Coleman as a software engineer. Together, they modified the Clinex...
Harris Fabrics computes its plantwide predetermined overhead rate annually on the basis of direct labor-hours. At the beginning of the year, it estimated that 29,000 direct labor-hours would be...
Qwert Typewriter Company and Yuiop Typewriters, Inc., are identical except for capital structures. Qwert has 50 percent debt and 50 percent equity financing, whereas Yuiop has 20 percent debt and 80...
How do the thermal conductivity of gases and liquids vary with temperature?
Why do we characterize the heat conduction ability of insulators in terms of their apparent thermal conductivity instead of the ordinary thermal conductivity?
Let A be a set and let S A For a fixed a A, the set O a. - = { n (a) |n Z} is the orbit of a under . Find the orbit of 1 under the permutation defined prior to Exercise 1. Data Prior to...
Hoes does social media create a relationship between buyer and seller?
What are the components that make up a radio script?
What does interactive media focus on?
Social media has a diverse array of promotional vehicles. What are some of the most common, and how can each help promote the key consumer benefit?
When should brands consider using magazine advertising?
The article ??Influence of Supplemental Acetate on Bioremediation for Dissolved Polycyclic Aromatic Hydrocarbons?? (T. Ebihara and P. Bishop, Journal of Environmental Engineering, 2002:505??513)...
You've been asked to take over leadership of a group of paralegals that once had a reputation for being a tight-knit, supportive team, but you quickly figure out that this team is in danger of...
A net force acts on an object and accelerates it from rest to a speed v 1 . In doing so, the force does an amount of work W 1 . By what factor must the work done on the object be increased to produce...
Can the total work done on an object during a displacement be negative? Explain. If the total work is negative, can its magnitude be larger than the initial kinetic energy of the object? Explain.
A 128.0-N carton is pulled up a frictionless baggage ramp inclined at 30.0 above the horizontal by a rope exerting a 72.0-N pull parallel to the ramps surface. If the carton travels 5.20 m along the...
Prove MM1: Both Umbrella Inc. and Prixxa Inc. produce $300,000 of cash flow each year. Umbrella has no debt outstanding, and its cost of equity capital is 14 percent. But Prixxa has 1,000,000 depts...
How did they find the over head rate percentages for current year and last year? A job order cost sheet for Cullumber Company is shown below. Job No. 92 For 2,000 Units Date Direct Materials Direct...
An all-equity firm is considering the purchase of a depreciable asset that costs $680,000 and would be fully depreciated over six years using the straight-line method. The asset is expected to...

Why is the thermal conductivity of superinsulation orders of magnitude lower than the thermal conductivity of ordinary

Question:

Step by Step Answer:

Superinsulations are obtained by using layers of highly reflective sheets separated by glass fibe...View the full answer

Fundamentals of Thermal-Fluid Sciences

Students also viewed these Physics questions