Free PPT and PDF Download for COMPRESSOR: Compressors, fans, and blowers are devices which are designed in such a way that they deliver gas at a pressure which is more than the genuinely existing pressure.The features like a rise in pressure, working pressure, mechanical design and specific speed become the basis for the classification and differentiation. PDF | On Nov 14, 2018, Shaimaa Seyam published Types of HVAC Systems | Find, read and cite all the research you need on ResearchGate All other mic types are either condenser or dynamic, but the ribbon mic is a category of its own due to the unique diaphragm it uses. endstream endobj startxref Graham-type condensers: The Liebig condenser is simple, but has low cooling capacity and can be fairly easily clogged as the condensed liquid flows back into the flask and blocks the vapor that is trying to escape. Based on their construction the various types of evaporators are: 1) Bare tube evaporators, 2) Plate type of evaporators, 3) Finned evaporators and 4) Shell and Tube type of evaporators. Finned radiator type condensers. 10 Analysis of condensers The total heat rejected in the condenser, QC is given by: m is the mass flow rate of refrigerant h2, h4 are the inlet and exit enthalpies of refrigerant mext is the mass flow rate of the external fluid Cp, ext is an average specific heat of the external fluid Text,o and T ext,i are the inlet and exit temperatures of the external fluid In all types, the front-end head is stationary, while Reference [1] and GBHE-PEG-MAS-608 give good reviews of alternative methods, discussing their advantages and drawbacks. Basically reflux condensers fall into two categories, namely, Graham type and coil type. Condenser-; Condenser is a unite or device which is used to Condense the substance from its gaseous state to liquid state by cooling it. J�,�X�fU��gX�}�OH�4����}�AkY��L�d]��'�m�)�l�j5��Lu����d���I�1#�>Yr輬��Es@ ��f99���1� ��0�0��g-k2B�K�W��+��S���+>�e��t�>]���D�ReK��?��M�uk��r�q���E�s�y觧��᧴��a�ģ�"F�bJ�1h��x�S� S`���2�,v}��^��ힺߑ��V|�&z��5o ��0��b�@�U��\��i�������Գ�E�R�)���+��:�:�_�>)�Zʣd[�#.�e�~�,��v�t���z΢�m�:�ѷ#j{5��j�q�"k�&č���ς�{�~�{�z�Ѱ,k���x�����DŽ�N��:�f�)��z&C�=��ʝ�^�: )�Kc-���^n�>��#n�M� fR�"�m*��2��21ԓ�D�R-��]�N8ȱW̃d͢yc��װ͚�Ѝ�ѱ%�t��S�l���}���g��y#+�D��}�HԱ��L��Ce�t��q����Ur-f��{GP��/z^#:ƴ�lH����y^�ם��Z���WK�Ֆ)�pƲ�#��. The tubes are positioned horizontally to form a vertical bank. 1026 ��� It is electrostatic capacitor-based and this eliminates the need for a polarizing power supply by using a permanently charged material. endstream In practice, rather than that which is currently being used will be determined by an analysis to be made economically. Manwell, in Encyclopedia of Energy, 2004. The two most common types of condensers used are surface and contact condensers (Vatavuk and Neveril, 1983). 7 0 obj The Best PDF Compressor. It can be used at the place where sufficient amount of good quality water is available. � � Elements of a steam condensing plant: 1. Forced convection type condensers are commonly used in window air conditioners, water coolers and packaged air conditioning plants. stream endobj Most surface condensers in refrigerated systems are the shell and tube type (see Figure 2.3) (McCabe and … Plate condensers are used mainly for smaller power plants; and •Direct contact types where the cooling water is sprayed directly into the steam. condenser surface is maintained by using a fan or a blower. It dramatically improves the efficiency of the steam generation plant. design car & truck applications, with limited use on late model vehicles. Air-chilled condensers should be kept free from dirt, lint, and other external materials because they tend to lessen the airflow around the tubes and fins if they are allowed to accumulate just like evaporators. 2 0 obj Elements of a condensing plant, Types of condensers, Comparison of jet and surface condensers, Condenser vacuum, Sources of air leakage & its disadvantages, Vacuum efficiency, Condenser efficiency Steam Condenser: It is a device or an appliance in which steam condenses and heat released by Compress PDF files for publishing on web pages, sharing in social networks or sending by email. Hybrid Energy Systems. h�bbd``b`��@�� H0��W�x�����a%H #1���? .U9��NK]e��W��N��Eeu"������/� In high level jet condensers, the condensate falls to the hot well by the barometric leg provided in the condenser. High conducting copper tube is used for most of the application. In surface condensers, the coolant does not contact the gas stream. While the shell-and-tube construction predominates for water-cooled condensers, plate-type condensers, sister of the plate-type evaporator explained in Sec. Metal fins or other aids are usually attached to the outer surface of the serpentine-shaped conduit in order to increase the transfer of heat between the refrigerant passing through the condenser and the ambient air. Download as PDF. Air leaks should be located and repaired as quickly as possible. %äüöß While the shell-and-tube construction predominates for water-cooled condensers, plate-type condensers, sister of the plate-type evaporator explained in Sec. A schematic diagram of horizontal shell-and-tube type condenser is shown above. In counter flow j ctions. 3.3 Condensers 3.3.1 Types of Condenser 3.3.2 Air-cooled Condenser 3.3.3 Water Cooled Condenser 3.3.4 Evaporative Condenser 3.3.5 Heat Transfer in Condensers 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 … Gandhy college of engg.& tech.,surat Branch : Mechanical Department Semester : 5th Division : B By VAIBHAV TAILOR h,Z��pM��G!�1���.�$-l�:��c�͂��QY� i��������� �R��� �V����2>��6����ks�����C��� ��X Download Free PDF. Download PDF. There are 3 condensers used in HVAC systems Water-cooled Air-cooled Evaporative Applications Air cooled – If the condenser… u � However, since the operating speeds are normally very high the flow appears to be almost steady on macroscopic time scale. 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