Influence of well intensifiers and their shape on efficiency of tubular air-air heat exchangers

Аuthors

Agapov A. V.^*, Ionov A. V.^**

Moscow Aviation Institute (National Research University), 4, Volokolamskoe shosse, Moscow, А-80, GSP-3, 125993, Russia

*e-mail: agapov_andrey@icloud.com
**e-mail: woln@mail.ru

Abstract

The influence of TLJT-relief (well flow intensifiers) on the efficiency of air-air heat exchanger is considered. The design of air-air heat exchanger tubes with TLJT-relief at low efficiency sections was designed and the hydrogas-dynamic calculation of these tubes was carried out. The calculation results were compared with the results obtained from the calculation of unintensified tubes. At comparison the increase of heat transfer at insignificant increase of hydraulic resistance inside the tubes and, consequently, expediency of application of the given kind of intensifiers in design of tubes of air-air heat exchanger is revealed. At further researches the optimum form of wells in TLJT-relief is defined and dependences of influence of a form of wells on decrease in temperature of hot coolant and on increase in hydraulic resistance are received. The obtained data can be used in the design of tubular airair heat exchangers.

Keywords:

air-air heat exchanger, TLJT-relief, intensifiers, mathematical modelling

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