A. Nurick's research while affiliated with University of Cape Town and other places

... A centering mandrel is introduced into the tube and the welding is performed. Studies can be found about this kind of heat exchanger in [25][26][27][28], but they are related to the design and analysis of the header box, especially the nozzle joints. ...

... Ref. CFD simulations were performed in many of the cited papers [7,11,21,30,60,62,65,[67][68][69][70]75,78,80,[113][114][115][116] The majority of the conducted studies were focused on 2D models [7,[11][12][13]21,30,34,48,52,55,[62][63][64]67,72,73,[75][76][77][78][80][81][82][83][84]89,[99][100][101]113,115] In many of the modeling approaches, the solar radiation was not considered [6,7,[10][11][12][13]21,30] The standard k-ε model or the RNG k-ε turbulence model were implemented for simulations of ventilated windows [48,62,71,80,98,99,103] In some cases, heat sources were included in the energy equation [63,64,82,93,100,114] Modelling of heat exchange processes through windows involves making a number of assumptions that simplify the solution of the governing equations. This fact indicates a Figure 11. ...