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تسجيل مستخدم جديدInvestigation of the thermal and hydraulic properties of a novel heat exchanger for smart heat supply systems
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In this study, analysis of shell and tube heat exchanger (HE) is performed. Theory part on heat transfer, calculation of heat exchanger and general thermal and hydrological properties are described. Several models are developed and computed in different cases: plain tubes and twisted tubes; common and separated inlet and outlet; heat exchanger with different baffles and geometry inside a shell; changed gas matter, tubes material, tubes thickness; modification of inlet and outlet. Twisted tubes shows better heat transfer efficiency than plain tubes. Baffles increase intensity of water mixing but dead zones can be formed in some cases. Length of air inlet and outlet influence on temperature distribution that is important for location of measuring systems. Experimental setup for a gas-liquid case is being created to verify the modelling and test new heat exchanger.
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This study investigates one of the possible approaches of improvement of heat exchangers efficiency. Literature review shows that most approaches of improvement are based on the heat transfer surface increasing and laminar-to-turbulent flow transitio
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