Povečanje učinkovitosti prenosa toplote v kompleksni strukturi uparjalnika

Lorbek, Luka (author), Poredoš, Alojz (mentor), Kitanovski, Andrej (comentor)

Magistrsko delo obravnava prenos toplote v kompleksni strukturi cevno-ploščnega uparjalnika, ki se uporablja v gospodinjskih hladilnikih. V prvem delu je predstavljen analitični model za popis porazdelitve temperatur, toplotnih tokov in toplotnih upornosti v strukturi uparjalnika. Analitični rezultati so primerjani z numerično simulacijo. V drugem delu so predstavljene ideje in rezultati iskanja novih konstrukcijskih rešitev za povečanje učinkovitosti prenosa toplote. Ideje so vrednotene glede na njihov vpliv na toplotni tok, tehnično izvedljivost in stroškovno upravičenost.

• Language: Slovenian
• Keywords: uparjalnik, prenos toplote, učinkovitost, prenosnik toplote, hlajenje
• Work type: Master's thesis/paper
• Organization: FS - Faculty of Mechanical Engineering
• Year: 2017
• PID: 20.500.12556/RUL-92941
• Publication date in RUL: 11.07.2017

Secondary language

• Language: English
• Title: Increasing the efficiency of heat transfer in a complex evaporator structure

Abstract

The topic of this thesis is heat transfer in the complex structure of a hot-wall evaporator, used in household refrigerators. An analytical model for describing temperature, heat flow and thermal resistance distribution in a hot wall evaporator structure, of a household refrigerator, is presented in the first part of this thesis. Analytical results are compared with a numerical simulation. Ideas and results of possible design improvements, for increased heat transfer in the evaporator structure, are presented in the second part of this thesis. They are evaluated by their influence on heat flow increase, technical feasibility and costs.

• Keywords: evaporator, heat transfer, efficiency, heat exchanger, refrigeration