Sökning: "Heat and mass balance"
Visar resultat 1 - 5 av 53 avhandlingar innehållade orden Heat and mass balance.
1. Heat and Mass Transfer in Built Structures - Numerical Analyses
Sammanfattning : Heat and mass transport processes are often present simultaneously in built structures in building applications. The emphasis of this thesis is to contribute to knowledge about predicting the effects of combined heat and mass transport in built structures. LÄS MER
2. Heat and Mass Transfer Investigations of Relevance for Food Engineering Applications
Sammanfattning : This thesis concerns two interrelated subjects of heat and mass transfer processes. The first one concerns mainly experimental measurements, with a subsequent development of a calculation procedure, of the thermal and hydraulic performances, experimental methods and evaluation procedures applied on various plate heat exchangers (PHEs) as evaporators with the refrigerant ammonia as working medium. LÄS MER
3. Boreal land surface water and heat balance : Modelling soil-snow-vegetation-atmosphere behaviour
Sammanfattning : The water and heat exchange in thesoil-snow-vegetation-atmosphere system was studied in order toimprove the quantitative knowledge of land surface processes.In this study, numerical simulation models and availabledatasets representing arable land, sub-alpine snowpack, andboreal forest were evaluated at both diurnal and seasonaltimescales. LÄS MER
4. Land surface heat exchange over snow and frozen soil
Sammanfattning : The energy exchange in the soil-snow-vegetation-atmospheresystem was studied to improve the quantitative knowledge of thegoverning processes. The lack of such knowledge contributes tothe uncertainty in the applicability of many existing modelsindependent of the temporal or spatial scale. LÄS MER
5. Methods and Tools for Analysis and Optimization of Power Plants
Sammanfattning : Modern societies' functionality is strongly dependent on the electricity. Efficient, environment friendly, and economical power production has been in focus for a long time. LÄS MER