h��UmLg��ʵR�8��s�V-���6�b�B���B��,��e��䀪GD�7-C͐��2�c��e��� ��,��η,��m ۇ���?��.����y�/����_ � �p��$��H�� 1 ��h�6@��ආЍ��@�P������i��j�#����7����v�@�c�\�Q����%�`���~���s+��l�3���{����. <> Backward feed 3.3. 0000009478 00000 n 0000000896 00000 n 2.2 Evaporators Systems. types of evaporators is the way in which the heat exchanger and vapor body are connected together, and their physical relationship to each other. c) Long tube vertical (LTV) falling film type. 251 0 obj <> endobj Heating may be either direct or indirect. 0 ]]�~E�u:{3_N����^C3鋿(�x�C��κM���mlNJ�6��������֒o��p��aץ��~����O���ѻ�z���2kU���ȦO��d�ZMU��Mu�,�9]��6�7���Ig>ۀgX���?�2�F�����L���������ue���G���\oJ�$PE�m�(�{��� 0000002298 00000 n Short-Tube Vertical Evaporators 2.2. ���v�����k��Wi�u�5�j��y쬯�CQK�>��`q�.o��UXӕ>Pp�q�>L88�C�|ion��q\m,�P3�h�Z�G%/H�� -�̵��9Ƅ4� ��]�2� 'a[f�K��o��+FF��'. stream endstream Most of the industrial evaporators have tubular heating surfaces. Industrial applications: These are the same as for short-tube evaporators. 0000024205 00000 n endobj APV Evaporator Hndbook 12/6/00 11:07 AM Page 3. Share. We shall discuss here the most important types of evaporators which are of interest to the dairy industry. 0000002400 00000 n <>/Font<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 595.44 841.68] /Contents 5 0 R/Group<>/Tabs/S>> Types and Design In the evaporation process, concentration of a product is accomplished by boiling out a solvent, generally water. 0000007285 00000 n Condensers and evaporators are basically heat exchangers in which the refrigerant undergoes a phase change. 1 0 obj TYPE OF EVAPORATORS 2.1. 2 0 obj evaporators and its types , mass transfer . At the top of the cylinder, there are baffles, which allow the vapours to escape but check liquid droplets that may accompany the vapours from the liquid surface. 2. It was observed that the total 0000011369 00000 n %PDF-1.5 %���� 0000003229 00000 n Types of Evaporator - Free download as Powerpoint Presentation (.ppt / .pptx), PDF File (.pdf), Text File (.txt) or view presentation slides online. Application: production of concentrated juice (orange, tomato, etc.) 0000015132 00000 n 0000028469 00000 n 3.4 Evaporators 3.4.1 Types of Evaporator 3.4.2 Heat Transfer in Evaporators 3.5 Expansion Devices 3.5.1 Capillary Tube 3.5.2 Float Valves 3.5.3 Thermo-static Expansion Valve 3.6 Summary 3.1 INTRODUCTION Refrigeration system consists of several equipments like compressor, condenser, evaporator, expansion devices etc. In this type of evaporator, the liquid flows as a thin film on the walls of long (from 12 to 30 feet in length) and vertical heated tube. In indirect heating, the heat, generally provided by the condensation of steam, passes through the heating surface of the evaporator. TYPE OF EVAPORATORS Evaporator consists of a heat exchanger for boiling the solution with special provisions for separation of liquid and vapor phases. The other two are used for salting or scaling applications. Plate Evaporator is a type of evaporator in which a thin film of liquid is passed and flows between the plates for the process of evaporation. 2.1. Multiple-effect evaporators. Both rising film and falling types are used. <> 0000004900 00000 n Heat and mass balances are used in calculations to design single- and multiple-effect evaporators. evaporators Evaporation Types of evaporation equipment and operation methods Calculation methods for ¾Single-effect evaporators ¾Multiple-effect evaporators. Thus, we have a variety of types of evaporators, such as prime surface types, finned tube or extended surface type, shell and tube liquid chillers, etc. As the name implies, a flooded evaporator is … The following list contains the descriptions of the most common types of evaporators. There is a vapour space above Forward feed 3.2. ���� JFIF ` ` �� C Forced Circulation Evaporators 2.7 Agitated Thin Film Evaporator 2.8. Tube length usually varies from 20 to 65 ft. 0000026633 00000 n The feed enters at the The bare tub… In this type of evaporator, the liquid flows as a thin film on the walls of long (from 12 to 30 feet in length) and vertical heated tube. Based on their construction the various types of evaporators are: 1. 0000003378 00000 n 0000030899 00000 n Bare Tube Evaporators The bare tube evaporators are made up of copper tubing or steel pipes. 3 0 obj Gasketed Plate Evaporator 3. ��p?�u�j�V#?%�*�OF�;�[���a���6��w�Y[�v�c�נ�j(�mc̍YRs���3�F��zZbaT�O�I� ���b�v��b�� b���M�$t�kB�;��`�Њ���$����Z-J�� ���e�֛�R�N�秖ޡ�?£�H�Q�դ����l`c��%��¸Q�%@9���9�m�?��hb� Wo >�I&����5qV�'>h�=+���Ӷ���WF:V|7W��m)�,�q�f������7���( � �A�)E��HQ��! They are useful for the evaporation of liquids at small scale. 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