Abstract

Vyacheslav Erikovich Shkarpet¹, Ivan Nikolaevich Tislenko¹, Kristina Vladimirovna Kochariantc¹, Dmitry Vladimirovich Kapko² and Iurii Andreevich Tabunshchikov³

 

DOI : http://dx.doi.org/10.13005/ojc/31.Special-Issue1.21

Energy saving has recently become one of the priority tasks for designers and engineers working to improve ventilation and air conditioning systems. Central recirculation is a traditional way of increasing energy efficiency of ventilation systems. Application of such systems reduces the consumption of heat energy for heat the outdoor air. At the same time, this technology increases both the consumption of electric power to move air, and the space required for the air ducts. Moreover, air flows carry hazardous emissions between the rooms serviced by the same air supply plant. The purpose of this research is to develop a local recirculation diffuser, which would make it possible to use a local recirculation system (Naumov et al., 2014) free of the above-mentioned flaws typical of central recirculation systems. This article offers a local recirculation diffuser (LRD) scheme, describes computation modelling that confirmed the performance capacity and efficiency of the local recirculation diffuser, analyses ways to optimise its scheme in order to reduce power consumption, and lays forth the aerodynamic characteristics of the proposed air diffuser.

Ventilation systems; recirculation; local recirculation diffusers; computation modelling; intake air; pressure drop; velocity coefficient; ceiling effect; ANSYS CFX

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