ANALYSIS OF THE EFFECT OF GEOMETRIC PARAMETERS OF SHELL AND TUBE HEAT EXCHANGER ON THE HEAT FLOW RATE

U ovom radu izvršena je analiza utjecaja geometrijskih parametara shell and tube izmjenjivača topline na izmijenjeni toplinski tok. Prikazan je matematički model po kome je izvršen termodinamički proračun utjecaja geometrijskih parametara shell and tube izmjenjivača topline na izmijenjeni toplinski tok. Izvršena je analiza utjecaja promjera cijevi na izmijenjeni toplinski tok. Zatim je izvršena analiza utjecaja duljine izmjenjivača topline na izmijenjeni toplinski tok variranjem duljine od 2 do 5 metara. U daljnjoj analizi variran je broj pregrada po metru duljine izmjenjivača (od 1 do 5 pregrada po metru) kako bi se dobio njihov utjecaj na izmijenjeni toplinski tok. Nadalje, izvršena je analiza utjecaja trokutastog i kvadratnog rasporeda cijevi na izmijenjeni toplinski tok te analiza utjecaja broja prolaza na izmijenjeni toplinski tok. Odabir izmjenjivača topline u ovom radu izvršen je isključivo na temelju zahtjeva za postizanjem optimalnog toplinskog toka, ne uzimajući u obzir cijenu izrade istoga.In this thesis, the analysis of the influence of geometric parameters of Shell and Tube heat exchanger on exchanged heat transfer rate is performed. Then, a mathematical model required for further thermodynamic calculation of the influence of the geometric paramaters of the shell and tube heat exchanger on modified heat transfer is presented. First, an analysis of the influence of two different tube diameters on modified heat transfer rate was performed. Then, the analysis of the influence of the length of the heat exchanger on modified heat transfer rate was performed by varying the length from 2 to 5 meters. In the next step, the number of baffles per meter of exchanger length (from 1 to 5 baffles per meter) was varied to obtain their influence on modified heat transfer rate. Furthermore, an analysis of the influence of the triangular and square pitch tube layouts on modified heat transfer rate, and analysis of the influence of the number of tube passes on modified heat transfer rate was performed. The selection of heat exchanger in this thesis was made exclusively on the basis of requirements for achieving optimal heat transfer rate, not taking into account the cost of making the same