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MMLU-Pro / 11421 / A 4 in. schedule 40 wrought iron pipe is covered with 2 in. thick layer of…

Problem

Answer published by the source. Consult the official source to check your work against its answer.

question

A 4 in. schedule 40 wrought iron pipe is covered with 2 in. thick layer of magnesia insulation (k = 0.041 Btu/hr-ft-°F) and 1(1/4) in. thickness of glass wool (k = 0.032 Btu/hr-ft-°F). If the outer surface of the pipe is at 700°F and the outer surface of the glass wool insulation is at 100°F, determine the rate of heat loss per foot length of the pipe.

category

engineering

options

  1. 175.9 Btu/(hr)(ft. of pipe)
  2. 190.3 Btu/(hr)(ft. of pipe)
  3. 160.2 Btu/(hr)(ft. of pipe)
  4. 220.8 Btu/(hr)(ft. of pipe)
  5. 150.1 Btu/(hr)(ft. of pipe)
  6. 130.7 Btu/(hr)(ft. of pipe)
  7. 120.5 Btu/(hr)(ft. of pipe)
  8. 180.3 Btu/(hr)(ft. of pipe)
  9. 140.4 Btu/(hr)(ft. of pipe)
  10. 200.6 Btu/(hr)(ft. of pipe)

src

stemez-TransportPhenomena

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Source and history

upstream_id / Original problem ID
11421
task_id
1388ff50-856e-5e12-add6-001515f95fac
task_key
default--test--11421
task_revision_id
1
config / split
default / test

Official source

initial import