Processes, Год журнала: 2024, Номер 12(12), С. 2867 - 2867

Опубликована: Дек. 14, 2024

This study presents the development of a novel computational technique for modeling transient heat transfer in outer and inner regions single U-tube ground exchanger. The approach couples forward-difference numerical with well-established analytical method aim reducing two-dimensional axisymmetric problem into one-dimensional problem, which has benefit time. Furthermore, suggested is numerically stable compared to full scheme, solution converges time step up 150 min. because computes streaming fluid U-tube, lower thermal capacitance, using technique, resulting stability at larger step, while scheme issues large as it flowing also requires more than method. In this model, analyses are coupled borehole wall temperature. time-varying temperature histories grout material inside borehole, wall, surrounding soil presented. addition, variations exit energy storage within results show that reaches 62 MJ end 1000 h exchanger charging operation, can be high 7366 MJ. investigates effect mass flow rate on performance

Язык: Английский