PHE produces higher heat transfer coefficients for liquid flow than most other types. The The high heat transfer coefficients are developed through t he efficient use pressure drop.
Feb 01, 2014 · Abstract. The continuous thermal processing of liquid foods with a three-section plate heat exchanger (PHE), heat integration and a non-isothermal holding tube was modeled to derive the temperature history of the product and the lethality distribution. Sequential linear temperature changes were assumed along the process and plug-flow was considered with three options for residence time: HISAKA Web-Simulator (HWS) Plate Heat ExchangerStructure of a Plate Heat Exchanger (PHE) Basic Structure Heat transfer plates are made by pressing thin sheets of corrosion-resis - tant metal such as stainless steel or titanium, then set them with seal gaskets and hang and pile them on the guide bar. Then, plates are tightened with bolts between the xed frame and the movable frame.
Plate. Figure 1 Tube and Shell Heat Exchanger. A plate type heat exchanger, as illustrated in Figure 2, consists of plates instead of tubes to separate the hot and cold fluids. The hot and cold fluids alternate between each of the plates. Baffles direct the flow of fluid between plates. Because each of the plates has Heat exchangers Dairy Processing Handbook
Plate type heat exchangers (PHE) consist of a number of parallel flow channels, formed by adjacent metal plates that are either welded or separated by gasket material around the perimeter of each plate. The plates can be formed from a variety of metals, but typically are made of stainless steel. The theory behind heat transfertube heat exchanger, the fouling of the heat transfer surfaces is considerably reduced. This means that the plate heat exchanger can remain in service far longer between cleaning intervals. Flexibility the plate heat exchanger consists of a framework containing several heat transfer plates. It can easily be extended to increase capacity.
Plate heat exchanger is an ideal equipment for liquid-liquid and liquid-steam heat exchange. It has the characteristics of high thermal efficiency, small heat loss, compact and light structure, small floor area, convenient installation and cleaning, wide
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