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assume that 40 of the light emitted by a 1000 w metal halide lamp 110 000 lumens illuminates a surface with the area of
a 1000 candela light source emits a beam of light the source is held exactly 4 ft above a moveable surface the surface
parabolic-louvered fluorescent luminaires have spacing coefficients of 1411 they are mounted 10 ft above the floor the
illumination of a 100 ft by 140 ft conference center lobby requires 40-400 w metal halide luminaires assume each
an existing fixture inserts the velocity probe described in problem 95 exactly 600 mm from the outside surface of the
the result for problem 912 predicts that the average velocity for turbulent flow will be found at a distance of 0216r 0
a shell-and-tube heat exchanger is made of two standard steel tubes as shown in fig 913 the outer tube has an od of 718
an alternative scheme for using the velocity probe described in problem 95 is to place it in the middle of the pipe
compute points on the velocity profile from the tube wall to the centerline of a plastic pipe 125 mm od x 74 mm wall if
use pipe-flo to model a straight horizontal run of 100 ft of 1-in schedule 40 pipe carrying 20 galmin of 75degf water
medium fuel oil at 25degc is to be pumped at a flow rate of 200 m3 h through a dn 125 schedule 40 pipe over a total
modify assignment 3 to require input of data for fluid properties volume flow rate pipe wall roughness and size of the
section 64 includes the recommendation that the velocity of flow in discharge lines of fluid power systems be in the
use pipe-floreg to calculate the head loss and pressure drop in a length of pipe that includes a filter the pipe is a
determine the pressure difference between two points on either side of a sudden enlargement from a tube with a 2-in id
figure 932 shows a heat exchanger with internal fins compute the reynolds number for the flow of brine 20 nacl at 0degc
task-an insurance company wants to get a rough estimate of their annual car insurance income the company has three
calculate the resistance coefficient k for a ball-type check valve placed in a 2-in schedule 40 steel pipe if water at
three surfaces of an instrument package are cooled by soldering half-sections of copper tubing to it as shown in fig
write a program or a spreadsheet for computing points on the velocity profile in a pipe for laminar flow using eq 9-1
figure 914 shows a heat exchanger in which each o f two dn 150 schedule 40 pipes carries 450 lmin of water the pipes
figure 924 shows the cross section of a flow path machined from a casting using a 34-in-diameter milling cutter
refer to the shell-and-tube heat exchanger shown in fig 913 the outer tube has an od of 78 in and the od of the inner
carbon dioxide with a specific weight of 0114 lb ft3 and a dynamic viscosity of 334 x 10-7 lb-s ft2 flows in the shaded