Sökning: "heat fins"

Visar resultat 1 - 5 av 14 uppsatser innehållade orden heat fins.

  1. 1. Precision Tailoring Cooling Systems using Linear Regression

    Kandidat-uppsats, KTH/Matematisk statistik

    Författare :Kajsa Bjelle; Ida Cui; [2021]
    Nyckelord :Regression analysis; nonlinear regression; linear regression; Levenberg-Marquardt; applied mathematics; friction factor; wavy fin; bachelor thesis; Regressionsanalys; ickelinjär regression; linjär regression; Levenberg-Marquardt; tillämpad matematik; friktionsfaktor; wavy fin; kandidatexamensarbete;

    Sammanfattning : This bachelor thesis is written for KTH Royal Institute of Technology and Ymer Technology AB. It examines the friction factor associated with the pressure drop in wavy-fin heat exchangers. Previous studies have used a nonlinear approach for determining the regression coefficients. LÄS MER

  3. 2. Frosting and Defrosting on Air Source Heat Pump Evaporators

    Master-uppsats, KTH/Energiteknik

    Författare :Camilla Sandström; [2021]
    Nyckelord :;

    Sammanfattning : Air source heat pumps has become increasingly popular for residential households as they are considered an energy efficient alternative on the heating market. The air source heat pumps use the outdoor air as heat source and can operate in cold climates around -15 to -20°C, but as the temperatures drops below 6°C the heat pump experiences problems with frost accumulating on the heat exchanger. LÄS MER

  4. 3. CFD Simulation of a Fin-Tube Evaporator under icing

    Master-uppsats, Linköpings universitet/Mekanisk värmeteori och strömningslära

    Författare :Abhay Mahesh Hervatte; [2021]
    Nyckelord :CFD; Refrigeration; HVAC; Evaporator; Thermodynamics; Icing;

    Sammanfattning : The study involves development of a methodology to simulate a fin-tube evaporator under icing conditions using CFD in Ansys® Academic Fluent 2021R1. It aims to build on previous studies performed on heat pumps. It was performed by Abhay M. Hervatte in collaboration with Bosch Thermoteknik AB, Tranås, SE during the spring term of the year 2021. LÄS MER

  5. 4. Modeling of waste heat recovery system and outdoor swimming pool : Waste heat from hotel kitchen recovered by heat exchanger transferred to pool

    Master-uppsats, Umeå universitet/Institutionen för tillämpad fysik och elektronik

    Författare :Linn Olanders; [2020]
    Nyckelord :Heat exchanger; heat recovery; waste heat; pool; swimming pool; comsol; modeling; commercial kitchen; kitchen;

    Sammanfattning : This project was performed to evaluate if waste heat from hotel kitchens is enough to heat outdoor swimming pools in southern Europe or if it can be used as a compliment to another heat source. Another aim was to analyze the simulations and calculations of the pools and the heat recovery system. LÄS MER

  7. 5. Simulation of solidification and cooling of a casting product using COMSOL Multiphysics

    Master-uppsats, Lunds universitet/Institutionen för energivetenskaper

    Författare :Tom Allen; [2019]
    Nyckelord :Heat transfer; casting; phase change; COMSOL Multiphysics; Technology and Engineering;

    Sammanfattning : In this project, the cooling and solidification processes for a Valmet Foundry product have been simulated in order to shorten the cooling time. The study has also been done in cooperation with RISE Swecast in Jönköping, as a part of finding ways to make casting procedures more energy efficient. LÄS MER