Articles Posted in the " Heat Exchangers " Category

  • Interview Short Question Answers on Heat Exchangers-2

    Interview Short Question Answers on Heat Exchangers-2

      https://www.mesubjects.net/wp-admin/post.php?post=620&action=edit         Introduction HT https://www.mesubjects.net/wp-admin/post.php?post=289&action=edit          Fin HT https://www.mesubjects.net/wp-admin/post.php?post=138&action=edit       Q.A. HT https://www.mesubjects.net/wp-admin/post.php?post=2686&action=edit       Q.A.HEX 1 Interview Short Question Answers on Heat Exchangers-2 Q  Which of the arrangement of heat exchangers (HEX) is better, (i) parallel flow,(ii) Counter flow. Explain the reasons. Counter flow HEX is better because of the following reasons: (i) Average temperature difference is more. (ii) There […]


  • Interview Short Question Answers on heat exchangers-1

    Interview Short Question Answers on heat exchangers-1

      https://www.mesubjects.net/wp-admin/post.php?post=620&action=edit         Introduction HT https://www.mesubjects.net/wp-admin/post.php?post=289&action=edit          Fin HT https://www.mesubjects.net/wp-admin/post.php?post=138&action=edit       Q.A. HT https://www.mesubjects.net/wp-admin/post.php?post=2752&action=edit     Q.A.HEX 2  Interview Short Question Answers on Heat Exchangers-1 Q. Explain multi-pass heat exchangers? When are these used? These heat exchangers are of three types. 1. Firstly multi-pass shell heat exchanger In these, fluid passes through more than one shell and the other fluid […]


  • Analysis of a Heat Exchanger

    Analysis of a Heat Exchanger

      https://www.mesubjects.net/wp-admin/post.php?post=1352&action=edit     Counter flow HEX LMTD https://www.mesubjects.net/wp-admin/post.php?post=1344&action=edit      LMTD Parallel HEX https://www.mesubjects.net/wp-admin/post.php?post=1335&action=edit         HEX basics https://www.mesubjects.net/wp-admin/post.php?post=645&action=edit      1-D unsteady state Conduct https://www.mesubjects.net/wp-admin/post.php?post=11259&action=edit    Q.A. Cond-3 ANALYSIS OF HEAT A EXCHANGER (a)    LMTD METHOD (i)      when all the four temperatures are known. q.=U A LMTD (ii) When fouling is to be considered q.=Udirty A LMTD where f=1/Udirty  –1/Uclean Values of f […]


  • Heat Exchanger-Overall heat transfer coefficient

    Heat Exchanger-Overall heat transfer coefficient

    Heat Exchanger-Overall heat transfer coefficient DEFINITION OF OVERALL HEAT TRANSFER COEFFICIENT ‘U’ Overall heat transfer coefficient for conduction and convection taking place simultaneously.Its units are W/m2 K. 1/UA =1/hiAi+fi + ln (r2/r1)/2πkL +1/hoAo + fo Where fi  and  fo are fouling resistances on the inner and outer surfaces. CALCULATION OF U (i) On the basis of Ai (ii) On the […]


  • Heat Exchanger-Basics

    Heat Exchanger-Basics

      https://www.mesubjects.net/wp-admin/post.php?post=1352&action=edit     Counter flow HEX LMTD https://www.mesubjects.net/wp-admin/post.php?post=1347&action=edit     Analysis HEX https://www.mesubjects.net/wp-admin/post.php?post=1344&action=edit      LMTD Parallel HEX https://www.mesubjects.net/wp-admin/post.php?post=645&action=edit      1-D unsteady state Conduct https://www.mesubjects.net/wp-admin/post.php?post=11259&action=edit    Q.A. Cond-3 Heat Exchanger-Basics Definition of heat exchanger, definition of compact HEX, Types of HEX, Practical applications of HEX, Definition of U, Resistance of a HEX, Fouling in a HEX, How to account for Fouling, Methods […]