BKF2423-HEAT TRANSFER 11516.PDF

BKF2423-HEAT TRANSFER 11516.PDF - Universiti Malaysia...

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Q Universiti Malaysia PAHANG Engineering Technology Creativity FACULTY OF CHEMICAL & NATURAL RESOURCES ENGINEERING  FINAL EXAMINATION  COURSE  COURSE CODE  LECTURER  DATE  DURATION  SESSION/SEMESTER  PROGRAMME CODE  INSTRUCTIONS TO CANDIDATE: HEAT TRANSFER  BKF2423  CHEW FEW NE  NOR HANIMAH HAIvIIDI  WAN SALWANIS WAN  MD  ZAIN  08 JANUARY 2016  3 HOURS  SESSION 2015/2016 SEMESTER I  BKC  1. This question paper consists of  FOUR (4)  questions. Answer ALL questions.  2. All answers to a new question should start on new page.  3. All the calculations and assumptions must be clearly stated.  4. Candidates are not allowed to bring any material other than those allowed by  the invigilator into the examination room.  EXAMINATION REqUIREMENTS: 1. Heat Transfer Handbook  DO NOT TURN THIS PAGE UNTIL YOU ARE TOLD TO DO SO This examination paper consists of  SIX (6)  printed pages including front page.
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CONFIDENTIAL BKC/151611BKF2423  QUESTION 1  An energy consultant is in charge of energy conservation in one of the hydroelectric  plant. There is a 300 m of 15 cm 0.1) horizontal pipe carrying steam at 250  ° C. The  company requires that any insulation installed must pay for itself in one year. The  thermal resistance of the pipe is very high that the outer surface of the pipes is 250  ° C and  is in contact with ambience air at an average temperature of 20  ° C.  a) Determine the rate of heat losses from the pipe to the surrounding. State all your  assumptions.
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