An electronic device is cooled by water flowing through capillary holes drilled in the casing as shown in below figure. The temperature of the device casing is constant at 353 K. The capillary holes are 0.3 m long and 2.54x10-3 m in diameter. If water enters at a temperature of 333 K and flows at a velocity of 0.2 m/s, calculate the outlet temperature of the water. 0.3 m Surface temperature = 353 K Water Water 333 K 0.2 m/s 2.54 x 10 m Capillary holes Single capillary

An electronic device is cooled by water flowing through capillary holes drilled in the casing as shown in below figure. The temperature of the device casing is constant at 353 K. The capillary holes are 0.3 m long and 2.54x10-3 m in diameter. If water enters at a temperature of 333 K and flows at a velocity of 0.2 m/s, calculate the outlet temperature of the water. 0.3 m Surface temperature = 353 K Water Water 333 K 0.2 m/s 2.54 x 10 m Capillary holes Single capillary

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

Water flows along a tube of diameter d = 6 mm with a velocity w = 0.4 m/s. The temperature of the tube wall t = 50°C. What should the length of the tube be to ensure a water outlet temperature tr2 = 20°C at a water inlet temperature twi = 10°C?
A square duct having D=23-cm and surface temperature T=70°C is located horizontally in an attic space with ambient temperature T=11°C. If the duct is subjected to ait flow of U=1.4-m/s, find the Nusselt number for the external flow over the duct as shown in the figure below. U air T
A 30mm ID, 50mm OD aluminum round tube passes air through it at a rate of 0.08 m^3/s. A 100W electric heater blanket covers the outside of the 2m long tube. If the air enters the tube at 100 celsius , what temperature does it exit at? Assume that the heater blanket is perfectly insulated on the back side (no heat loss out the back). Note-RT is 25 celsius
Glycerin at 10°C is flowing steadily through a 8-cm diameter pipe at 0.1 kg/s. What is the average velocity of the glycerin flow? What is the Reynolds number?
A square duct having D=17-cm and surface temperature T=66°C is located horizontally in an attic space with ambient temperature T=14°C. If the duct is subjected to ait flow of U=1.0-m/s, find the Nusselt number for the external flow over the duct as shown in the figure below. U air T,
At a speed of 0.2 m/s, light oil with a density of 880kg/m and a viscosity of 2.1cP is pumped from a huge oil tanker to a power plant's storage tank. The discharge point is 50m above the liquid level in the tanker, at the top of the storage tank. The pipeline is a 150mm smooth pipe with six typical 90° elbows and two gate valves that is 200 meters long (fully open). The atmosphere is vented from both the oil tanker and the storage tank. a. Calculate the pressure drop in J/kg along the pipeline. b. Calculate the pumping power (in kW) if the pump-motor set has a 65 percent efficiency.
A plate with a negligible thickness of 50 cm in width and 100 cm in length and from its upper surface, it is exposed to 2 different airflows in the same direction along its length. top of the sheet The speed of the air flowing from its surface is 3600 m/min and its temperature is 473 K. Its temperature is 298 K and its speed is 600 m/min. The total heat exchange between both fluids calculate. (Assume the initial temperature of the plate is 160⁰C.)
Give me your thoughts in the inverse proportionality between bulk velocity of a liquid flowing inside a pipe and its friction factor (and consequently, its skin friction energy loss). Effectively, for a fixed pipe length and diameter, the Fanning friction factor and the head loss due to friction decreases as the bulk velocity of the liquid increases. Explain this phenomena scientifically.
Pls solve acc
A fluid with a constant density of 961 kg/m3 and a constant viscosity of 1.419×10-3 Kg/m.s is flowing over a flat plate at a stream free velocity of 0.87 m/s. If the plate has a length of 2 m, answer the following: 1.What is Reynolds number at a point that is (1/4)L down the entrance? 2.Is the flow laminar or turbulent? 3.Calculate the thickness of the boundary layer in mm at (1/4)L down the entrance 4.Calculate the drag coefficient at (1/4)L down the entrance
As shown in the figure, electrical heaters operating in the V-220 V are placed on the lower surface of the square-shaped horizontal aluminum plate with a length and width of 1.2 m. Air at a temperature of 27 °C flows from the upper surface of the plate in parallel at 15 m/s. Since the bottom surface of the plate is fully insulated, what should the value of the current () passing through the electrical elements be so that the temperature of the plate does not exceed 77 °C? Air Al plate Heaters L=1.2 m