Mar 29, 2020   3:10 p.m. Miroslav

# Persons at STU

 doc. Ing. Otília Lulkovičová, PhD. Identification number: 808 University e-mail: qlulkovicova [at] stuba.sk External colleague - Faculty of Civil Engineering (STU)

 Contacts Lesson Projects Publications Bodies Supervised theses

Basic information

Basic information about a final thesis

 Type of thesis: Dissertation thesis Thesis title: Energy and Environmental Aspects of Combined Solar Heating and Cooling Systems in Buildings Written by (author): Ing. Simona Michaličková, PhD. Department: Department of Building Services (FCE) Thesis supervisor: doc. Ing. Otília Lulkovičová, PhD. Opponent 1: Ing. Daniel Čurka, PhD. Opponent 2: doc. Ing. Belo Füri, PhD. Opponent 3: prof. Ing. Karel Kabele, CSc. Final thesis progress: Final thesis was successfully defended.

Additional information about the final thesis follows. Click on the language link to display the information in the desired language.

 Language of final thesis: English

 Slovak        English

 Title of the thesis: Energy and Environmental Aspects of Combined Solar Heating and Cooling Systems in Buildings Summary: The study main objective is the analysis of solar cooling systems with single- stage effect. Mathematical model of an absorption cycle is defined based on thermodynamics relations. In my thesis I also deal with comparison of two single - stage absorption cycles using pairs of matter H2O/LiBr (lithium bromide /water) and HN3/H2O (ammonia/water). To be able to define and optimize system behavior under certain input conditions, we need to be able to determine it in each part of pressure (P), temperature (T), enthalpy (h), concentration (x) and mass flow (m) of the substance, which is located in the part of the system. Basic principles of the functional absorption cycle definition is the most important step considering the calculation of these quantities. Input parameters of both working substances have a direct impact on the Energy Efficiency Ratio (EER). Based on this analysis I decided to work with absorption cycle and working substance H2O/LiBr. The other thesis content is work with simulation programs. First program what I used is Solar Cooling Light, which deals with simplified design of the collector array considering to cooling surface, location, solar gains. The second simulation program is Open studio for Sketchup and Energy Plus. In this section there is created a hotel property having an absorption unit H2O/LiBr installed, as working substance and variable energy efficiency. The last step is to analyze the direct dependence between energy efficiency of the absorption unit and the proposed collector array. Key words: solar cooling, sun, working substance