heat exchanger design pdf

~�ɩ�5NXŦ�cՐ���ֈ����9�r+ޫ���h�t�� �~�-�ȼ o}�o�=8���cS�R�Y�G.���/�~s����9��i�ә-��t����m�H����W������a�^}�����)�U?�� 7�g��߸��� �`=&ߋ'�k5�|�[��?��K�m�`�'�s��i{߃���J_�nj�^&�SZ~�fq�9V-�>r]�sQ�����٨&�d��ނG�B�.T��2�|ӢeXV�~u2e����)y��LK?άu^-zZE�sk�|^�`�$��ۡ��b�j������ 蓹% �J�(��K�_�߇�8�9�?��{���M`l-^x�9�y�@4����x0���{��z�f���D3�{x�D�.O:�}��u�a�.Cv&}mʁ�>6���(������}�#��:��^��NA��F{�x�{5o�N__]s`4dU��� Heat Exchanger Design Example..(a) Objective: Design a double pipe heat exchanger with bare inner multi-tubes that can be used to cool engine oil with cold sea water. %PDF-1.5 Since NTU and capacity rate ratio accounts for all the 0000001945 00000 n 0000001869 00000 n <> The basic design involves choosing an appropriate number of transfer units (NTU) and capacity rate ratio for a given application. 3 0 obj % % Co u n t er %F l o w %H E %!!!!! x���AN"A��D�cg��{N�,�.���s�,X��c$��yc� Effectiveness 5. �i��u_wN����>�R�G{�ʜO���\�:V��>N�+z�NO�9L4�#D>�/��ձǘ�f��m ���1��C��]�r?�>w�L"�^�i6�j�nz����G1!� The counter flow design is most efficient, in that it can transfer the most heat from the heat transfer medium. %PDF-1.3 The most common problems in heat exchanger design are rating and sizing. *Ö¾lónşóM¾hóå1QƒA4—M8l…=Jé´½�‘R‰\P6¢7:ı’¨è%EÂ]Š±� y�áãɶ¦4¹P™ÓwmGd¢“qB%�ğ‚~AcŸÙ³�d (^�j%8 Fabrication and Experimental Analysis of Absorber Based LiBr -Water Absorption Refrigeration System, The Design of Shell and Tube Heat Exchangers - A Review, Electrocatalytic Conversion of CO2 to formic acid, Utillization of oil shale ash for removal of toxic gases and water pollutants, Solubility of CO2 in some solvents for electrochemical conversion, Syntheis of AC from fly ash and application for removal of acidic gases from gas stream, Handout: Steps for design of Furnace & Fired Heater. Parallel flow heat exchangers 3. ��:�oѩ��z�����M |/��&_?^�:�� ���g���+_I��� pr;� �3�5����: ���)��� ����{� ��|���tww�X,��� ,�˺�ӂ����z�#}��j�fbˡ:��'�Z ��"��ß*�" ʲ|xx���N3�~���v�"�y�h4Jծ���+䍧�P �wb��z?h����|�������y����畃� U�5i��j�1��� ��E&/��P�? Then obtain the heat duty, Calculate the mean temperature difference using. 0000026406 00000 n t as initial guess from the table bellow: are the heat transfer coefficients for the scales (dirt) inside and. Heat exchanger description 2. The rating program determines the heat transfer rate and the fluid outlet temperatures for prescribed fluid flow rates, inlet refer to cold and hot streams. Join ResearchGate to find the people and research you need to help your work. <> <> stream 0000005874 00000 n 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. 1 0 obj %���� © 2008-2020 ResearchGate GmbH. The refrigerant vapours (6) flows to the condenser which is under forced convection, where the vapour converts its phase from vapour to liquid by heat rejection and later flows to the evaporator (8) through a flow restrictor called expansion valve (capillary). Use the. Critical analysis is carried-out at each level to calculate the each accessory heat load and other parameters. endobj startxref 4 0 obj %PDF-1.4 %���� At last the performance parameters are examined in connection to the concentration of the absorber and mass flow rates. These fundamental dimensionless parameters account for the thermal & physical properties of the fluids and the heat exchanger (HX) material. The determined hypothetical results including the overall heat transfer coefficient are compared with the test results inferred for a developed unit with a nominal output of 1kW. 0000018897 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. Handout that help Student in Furnace & Fired Heater Design. Assume tube diameter and BWG, Assume tube length, the shell or tube side flow rate. 0000000016 00000 n 0000006245 00000 n In the case considered herein, both LMTD and ε-NTU techniques yield the same exact results. endstream 0000006502 00000 n It uses low-cost materials, is easy to construct, and gives ample scope for individual initiative and the application of engineering analysis to the optimization of the design. 0000003004 00000 n 0000001443 00000 n 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.

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