Daily applications of plate heat exchangers and heat transfer mechanisms

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This post was last edited by Catalyzing a Grain on 2019-3-2 at 16:59. Thanks to its various advantages, plate heat exchangers have become an important heating element in heat exchange stations used in urban central heating systems, and they are employed in water-to-water, steam-to-water, and domestic hot water supply systems. The following are the daily applications of plate heat exchangers and their heat transfer methods. Air conditioning system: Plate heat exchangers are widely used in air conditioning systems for heat exchange of chilled water. Installing a plate heat exchanger near the condenser, between the cooling tower and the condenser, can act as a substitute for the condenser itself, preventing equipment corrosion or blockages, and it can also reduce the operating time of chiller units during transitional seasons. Pressure breakers in high-rise buildings: In high-rise buildings, HVAC systems that use heat transfer media such as water or ethylene glycol often experience very high static pressures. By using plate heat exchangers as pressure breakers, these high static pressures can be divided into several smaller pressures, thereby reducing the pressure requirements placed on pumps, valves, heat and cold water units, and other equipment – which in turn saves on investment costs for such equipment. Ice storage system: An ice storage system using plate heat exchangers helps to regulate the power grid by reducing peak loads and filling in capacity gaps. In other words, chillers are used to produce cooling at night, with ice being stored in ice banks to meet the cooling demands of the following day; this reduces the peak load on air conditioning systems, thereby enabling effective energy savings and lower operating costs. Waste heat recovery: In various industries, a large amount of heat is released into the surrounding atmosphere every day along with waste thermal media, resulting in significant energy waste. Due to their low investment cost, high thermal efficiency, and low requirement for a temperature difference between hot and cold media, plate heat exchangers can be used to recover waste heat and convert it into heat energy that can be reused for preheating purposes. Heat transfer is the transfer of heat, and it is a physical phenomenon that occurs widely in nature. In any system where there is a temperature difference, heat transfer occurs, with heat moving from the higher-temperature area to the lower-temperature area. There are three basic modes of heat transfer: conduction, convection, and radiation. Heat conduction: Also known as thermal conduction, it refers to the process by which heat moves from the hotter parts of an object to its cooler parts. Convection heat transfer: It is a phenomenon in which heat is transferred from one place to another by the macroscopic movement of fluids. Convection heat transfer in chemical production usually refers to the heat transfer that occurs when a fluid is in direct contact with a solid wall surface. Radiative heat transfer: also known as thermal radiation, refers to the propagation of electromagnetic waves in space due to heat. An object converts thermal energy into radiant energy, which travels through the air in the form of electromagnetic waves; when it encounters another object, this energy is absorbed in whole or in part, turning back into thermal energy. The above covers the applications of plate heat exchangers as well as their heat transfer mechanisms. If you have any further questions, you can simply search for Kangjinghui Thermal Energy Equipment Co., Ltd. to find more information. Kang Jinghui welcomes your visit.