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heat exchanger design pdf

The basic design involves choosing an appropriate number of transfer units (NTU) and capacity rate ratio for a given application. ;;��?�|���dҼ��ss�������~���G 8���"�|UU�n7��N�3�#�O��X���Ov��)������e,�"Q|6�5�? The Basic Design Equation and Overall Heat Transfer Coefficient The basic heat exchanger equations applicable to shell and tube exchangers were developed in Chapter 1. 5.3 Heat Exchanger Design Methods The goal of heat exchanger design is to relate the inlet and outlet temperatures, the overall heat transfer coefficient, and the geometry of the heat exchanger, to the rate of heat transfer between the two fluids. • Synthesis of heat exchanger networks with the goal of designing a structure that provides the lowest total (capital plus operating) costs. �:�9]'S���{�y{��w��{�=��1.��wU۵�A�W��(��7�wE8J��~������7�\/���[��j-s�k�{�݅1�"I���R���_�x}T�5�r{�~����a�O\��7'�sO�9�s̄�D]� Xjh�̑ě�����_�"x|[o�{u?�Y��]� �=Y�q�Œ������7�~9Z=����E�1���0� \%��/c C�c�cF�ws`l'~v�bzM; ɦ�����_E�[!Q:9�.����0��k+h�5����g��K�%�~Z ~�ɩ�5NXŦ�cՐ���ֈ����9�r+ޫ���h�t�� �~�-�ȼ 0000002518 00000 n 3 0 obj %�쏢 Design and Thermal Analysis of Segmental baffle and Helical baffle in Shell and Tube Heat Exchangers... A Student Centered Senior Capstone Project In Heat Exchanger Design. Heat Exchanger Design Handbook SECOND EDITION KuppanThulukkanam CRCPress Taylor&Francis Group Boca Raton London NewYork CRCPress is an imprintof the Taylor &FrancisCroup, an informabusiness. endobj Heat Exchanger Design Example..(a) Objective: Design a double pipe heat exchanger with bare inner multi-tubes that can be used to cool engine oil with cold sea water. 1 0 obj shell and tube heat exchanger in terms of crucial dimensionless parameters were developed. <> Effectiveness 5. 0000005874 00000 n Figure E5.2.1 Shell and tube heat exchanger MathCAD format solution: 0000006888 00000 n 5 0 obj 0000001652 00000 n �i��u_wN����>�R�G{�ʜO���\�:V��>N�+z�NO�9L4�#D>�/��ձǘ�f��m ���1��C��]�r?�>w�L"�^�i6�j�nz����G1!� 0000001945 00000 n The most common problems in heat exchanger design are rating and sizing. 0000001869 00000 n significant physical and thermal properties of the heat exchanger, performance tables and charts would certainly help in maximizing the performance and minimizing the cost of the shell and tube heat exchanger. 0000000914 00000 n 0000019726 00000 n x���Mk1����9&�q&�ăm-mY�� v�=��Zڟ�̺h[Tda 3��0�;�tZ��h ��BoЇw)� "��Ea]J�؀��ᏻM��o����B��h1��+����>�/�Q�z���Tk1����ę6r4�`=�"˲?��w������$���hBt)���=�ГL�g��d� K�$�B�2�|Wp��p-œi A pool boiling generator has been installed in the unit. In the evaporator the refrigerant evaporates by extracting the rejected heat from refrigerated space and later flows back to the absorber. Assume tube diameter and BWG, Assume tube length, the shell or tube side flow rate. The two most common heat exchanger design problems are those of rating and sizing. 0000002200 00000 n endstream endobj 85 0 obj<. 1 Heat Exchanger Design Example..(a) Objective: Design a double pipe heat exchanger with bare inner multi-tubes that can be used to cool engine oil with cold sea water. Heat Exchanger –Example 3 Heat 291,800 lb/hr cold C2+ NGL feed from 80oF using 191,600 lb/hr hot C3+ bottoms @ 240oF. Here, we will cite only those that are immediately useful for design in shell and tube heat exchangers with sensible heat transfer on the shell-side. Here, we will cite only those that are immediately useful for design in shell and tube heat exchangers with sensible heat transfer on the shell-side. 2.2.1. arrangement (Triangular or square pitch): previous step with that you assumed in step, then you had a valid assumption, then tabul, other design specification. ���ܩ3��6ée8{"%��*��eY��PZA� )+Q�[�I�@{s��� q�/��H�����ü㌫��4�{��C"��Kk�姠��5�֎��V��"zde��ֈ��d�p�e�q��F�WbPঈ��D�9�^|��hx�.ԑ���~�_zk#K(�.����om����G��нM�;�ڵU��u�-��|��tP_f�0���Q�(=�;wS�9�mkfO�^ǎx���ّۣ�z�4�mx� 0000006023 00000 n <> x��}ݏe7rV#�f[�4�4;��d�q��=�ïC�5@ �Vy;��l��ǯX��� ӗ��6�n������o�������ٸ�w�E��o~�B���w�݆x���l����+D�~��m��>�~�����go�����}� Ż�����'oގ��m��={S�����i8���⬘{�/���{/�[b̿����uB��k�� ������7o����V�>�.sM��=�[N[��\0�Z�����(?������,�:P��;�Nm�w_0���/�W���N�2Я�3�O����^��!�`��O��=x��c��F@���ݷ"��;�}'��6�zn���2�����!�����7�>�m��k�sE���^h2R��kMG��u0��M�߶�F2n��bfz�/�m�/��4�}�RN�����}il���Ͽt���6�#�Nb�4��ߗ}��+""�\�RNݍfi4K����:�}�%���������7ex��3��V����4���o{����z��a4CK�����;�� Counter flow heat exchangers 4. 0000026842 00000 n Since NTU and capacity rate ratio accounts for all the stream %PDF-1.5 These fundamental dimensionless parameters account for the thermal & physical properties of the fluids and the heat exchanger (HX) material. A small-scale heat exchanger is described, suitable for construction as a design-and-make exercise by a class of students. The rating problem is evaluating the thermo-hydraulic performance of a fully specified exchanger. Handout that help students for design of Heat Exchangers based on Kern's Method, All figure content in this area was uploaded by Reyad Awwad Shawabkeh, All content in this area was uploaded by Reyad Awwad Shawabkeh on Sep 04, 2015, King Fahd University of Petroleum & Minerals, or four temperature values and find one of, Temperature correction factor: two shell passes; four or multiples of f, Temperature correction factor: divided-fl. In the design analysis, performance charts and tables describing the performance of the endstream trailer The following are the design specification: Fluid Engine Oil Sea Water Inlet Temperature, C 65 20 Outlet Temperature, C 55 25 Heat … Following figure details the boundary conditions for the heat exchanger… 1-1 Counter-Current heat exchanger from Example #1 designed with 25% excess heat transfer area (UA=196,000 Btu/hr oF) Assume only sensible heat effects •C2+ NGL feed heat capacity –0.704 Btu/lb F 4 0 obj 0000001523 00000 n The analysis is extended using the above Kern method with different fluid combinations …

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