Uporaba eno-dimenzijskega modeliranja dvofaznega toka za projektiranje kapilarnega sklopa pred vstopom v cevno-lamelni uparjalnik toplotne črpalke

Podpečan, Luka (author), Perpar, Matjaž (mentor)

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.

• Language: Slovenian
• Keywords: toplotna črpalka, dvofazni tok, sklop kapilar, padec tlaka
• Work type: Final paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: FS - Faculty of Mechanical Engineering
• Place of publishing: Ljubljana
• Publisher: [L. Podpečan]
• Year: 2023
• Number of pages: XI, 28 str.
• PID: 20.500.12556/RUL-149652
• UDC: 621.577:621.3.025.2:532.11(043.2)
• COBISS.SI-ID: 169623811
• Publication date in RUL: 08.09.2023

Secondary language

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

Abstract

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.

• Keywords: heat pump, two-phase flow, capillary tubes, pressure drop