Problem 1.4-6 A current lead must be designed to carry current to a cryogenic superconducting magnet, as shown in Figure P1.4-6.
TH = 300 K current lead D = 1 cm L = 20 cm Ic = 1000 amp
TC = 300 K Figure P1.4-6: Current lead.
The current lead carri
Heat Transfer Links 1) Conceptual ideas of heat tranfer physics: http:/www.gcse.com/energy/conduction.htm 2) More heat transfer ideas: http:/sol.sci.uop.edu/~jfalward/heattransfer/heattransfer.html 3) Another look at the mathematical formulation for
ME 364 HW 3 Solutions Problem 1: You have been contracted by ASHRAE (the American Society of Heating, Refrigeration, and AirConditioning Engineers) to measure the thermal conductivity of various, new materials for insulating pipes. Your contract spec
Problem 1.4-8
Figure P1.4-8(a) illustrates a large infrared detector array that must be cooled to 100 K within a
vacuum enclosure in order to be tested.
TH = 300 K
x
Ac
g
L
vacuum
!
qs
!
qc
cryocooler
detector array
Marray = 500 kg
TC = 100 K
Figure P1.4-
5.3-12 Your cabin is located adjacent to a stream and you like cold beer out of a keg. There is no electricity to your cabin so you cannot put the keg in the refrigerator. Therefore, you have decided to run the warm beer from the keg through a tube t
ME 364, Fall 2011
Pfefferkorn & Miller
HW#3
Due Wednesday 9/21/2011 at the beginning of class
You must follow the homework format ([email protected] > ME364 > Contents > Homework).
You must show all of your work to receive full credit.
Work this problem using EES.
ME 364, Fall 2011
Pfefferkorn & Miller
HW#4
Due Wednesday 9/28/2011 at the beginning of class
You must follow the homework format ([email protected] > ME364 > Contents > Homework).
You must show all of your work to receive full credit.
Problem 1 [EES]
A resistance
ME 364, Fall 2011
Miller & Pfefferkorn
ME 364 (Fall 2011)
Solution to Homework 9
2
Fully developed heat transfer coef. (W/m -K)
Problem 1
Fluid flows through a tube with inner diameter D. You have been asked to help interpret some
measured data for flow t
ME 364 HW 2 Solutions Problem 1: The convection heat transfer coefficient for heat transfer from an electrically heated wire to air is to be determined by measuring temperatures when steady operating conditions are reached and the electric power cons
ME 364 Exam #1, in-class portion Name _ Lecture time (circle one): 11:00 or 2:25 Note there are 4 multiple choice questions worth 40 pts followed by a problem that is worth 60 pts. There is an extra credit question at the end that is worth 10 pts. Y
PROBLEM 12.18
ICN'OWN: Solar ux at outer edge of earths atmosphere, 1353 Uni-"ml.
FIND: [a] Emissive power of sun, Surface temperature of sun, Wavelength of maximum solar
emission, (r1) Earth equilibrimn temperature.
SCHE MATIC :
;. DELZJOYm
PROBLEEI 3.101
KNOHN: Dimensions of a plate insulated on its bottom and thermally joined to heat sinks at its
ends. Net heat ux at top surface.
FIND: {3) Differential equation which determines temperature distribution in plate, {b} Temperature
distribut
PROBLEM 3.77
KNOWN: Geometry and boundary conditions of a nuclear fuel element.
FIND: (a) Expression for the temperature distribution in the fuel, (b) Form of temperature
distribution for the entire system.
SCHEMATIC:
Steel "46
ASSUMPTIONS: (l) On
EES Workshops
Fall 2005 Information and Schedule
Two workshops have been scheduled for the fall 2005 semester. Each workshop will be directed by either a faculty member or a graduate student with other graduate students available to help answer quest
ME 364: Elementary Heat Transfer Summer 2006 Final Examination Time: 2 Hours, 30 minutes Total Points: 40 Open Book, Open Notes and Open Homework. No other printed/photocopied material. 1. Short answer questions/problems. (a) (3 points) A slab of wid
ME 364: Elementary Heat Transfer Summer 2006 Examination 3 Time: 75 minutes Total Points: 25 Open Book, Open Notes and Open Homework. No other printed/photocopied material. 1. (5 points) Experimental measurements of the convection heat transfer coeff
ME 364: Elementary Heat Transfer Summer 2006 Examination 2 Time: 75 Minutes Total Points: 25 Open Notes and Homework Only 1. (5 points) Consider the following grooves (semicircular, rectangular, and V, in the order shown in the sketch below) each of
ME 364: Elementary Heat Transfer Summer 2006 Examination 1 Time: 75 Minutes Total Points: 25 Open Notes and Homework Only; No Printed and Photocopied Material Allowed 1. (8 points) Steam flowing through a long, thin-walled pipe maintains the pipe wal
Problem 1
Convection heat transfer flux, q '
_
h(Ts
T ) = 59 * (50-25) = 1475 W/m2
Problem 2
(c) The special paint reduces absorption of the solar irradiation (due to small absorptivity) and increases emission (due to large emissivity). The fin