The influence of plate corrugation geometry on heat and mass transfer performance of plate heat exchangers for condensation of steam in the presence of air

被引:6
作者
Arsenyeva, Olga [1 ]
Plankovskyy, Sergiy [2 ]
Kapustenko, Petro [3 ]
Klemes, Jiri Jaromir [1 ]
机构
[1] Brno Univ Technol VUT Brno, Fac Mech Engn, NETME Ctr, Sustainable Proc Integrat Lab, Technicka 2896-2, Brno 616 69, Czech Republic
[2] OM Beketov Natl Univ Urban Econ Kharkiv, Dept Automatic Control & Comp Integrated Engn, 17 Marshal Bazhanov St, UA-61002 Kharkiv, Ukraine
[3] Natl Tech Univ Kharkiv Polytech Inst, 2 Kyrpychova st, UA-61002 Kharkiv, Ukraine
关键词
Plate heat exchanger; Condensation; Non-condensable gas; Plate geometry optimisation; Heat and mass transfer; PRESSURE-DROP; GAS; FLOW;
D O I
10.1016/j.tsep.2022.101248
中图分类号
O414.1 [热力学];
学科分类号
摘要
Processes of steam condensation in the presence of air, as non-condensable gas, was studied in experiments with the models of plate heat exchanger (PHE) channels formed by plates with corrugations of different geometry. Validity of the developed mathematical model for the calculation of local process parameters is confirmed, and it is used to facilitate the analysis of experimental results. Sets of experiments were performed on five samples modelling PHE channel main corrugated field. The corrugations angle to plate vertical axis in three experimental samples was 30 degrees, 45 degrees and 60 degrees at the same corrugations' height of 5 mm. Another two samples had corrugations height 7.5 mm and 10 mm at the same corrugations angle 60 degrees. Various effects of plate sizes and geometrical parameters of corrugations on the performance of PHE as a condenser for steam-air mixture and local process parameters profiles are discussed. Presented analysis shows that the specified process conditions on temperature and pressure drop in PHE can be satisfied by varying corrugations angle and channel spacing at plates of different lengths. To maintain the same temperature program with a decrease of plates corrugation angle from 60 degrees to 30 degrees require the plates with a length bigger from 2 to 2.6 times, depending on specific process conditions. These plate parameters are recommended for use as variables in solving the problem of PHE plate geometry optimisation with the use of the proposed mathematical model.
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页数:8
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