Application of one-dimensional two-phase flow modeling to design the capillary assembly before entering a tube-fin heat pump evaporator

V sklopu zaključne naloge smo z eno-dimenzijskim modeliranjem dvofaznega toka analizirali padec tlaka v sklopu kapilar pred vstopom v cevno-lamelni uparjalnik toplotne črpalke. Postavljena je bila eksperimentalna kolona, kjer smo lahko beležili podatke o padcu tlaka. Za izračune smo uporabili eno-dimenzijski pristop z modelom ločenega toka (Lockhart – Martinelli). Analitični model smo preverili z meritvami na obstoječi toplotni črpalki ADAPT 0724. Na podlagi analitičnega modela smo zasnovali sklop kapilar za novi model toplotne črpalke.In the final assigment, the pressure drop in the capillary assembly before entering a tube-fin heat pump evaporator were analysed using one-dimensional two-phase flow modelling. An experimental column was set up to record pressure dropa data. For the calculations, we used a one-dimensional approach with a seperate flow model (Lockhart – Martinelli). The analytical model was verified with measurements on an existing heat pump ADAPT 0724. Based on the corresponding analytical model, we have designed a set of capillaries for a new heat pump model