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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
11

Vėdinimo įrenginių su integruotais šilumos siurbliais projektavimas, tyrimas ir analizė / Design, Research and Analysis of Air Handling Units with Air Source Heat Pumps

Bareika, Paulius 20 June 2013 (has links)
Magistro baigiamajame darbe nagrinėjami vėdinimo įrenginiai su integruotais šilumos siurbliais. Darbe atliekama tokios rūšies įrenginių literatūros apžvalga. Apžvelgiami šilumos siurblio komponentai, darantys didžiausią įtaką jo darbui. Darbo metu atlikti įrenginių projektavimo ir konstravimo darbai. Pateikiamos projektavimo rekomendacijos. Lyginami skirtingi kompresorių galios moduliacijos principai. Nagrinėjami įrenginių darbo režimai, kylančios problemos eksploatacijos metu, ieškomi problemų sprendimų būdai. Pateikiamos kintamo sukimosi greičio kompresorių galių moduliacijos ribos. Atliekamos energinė ir ekserginė analizės pagal eksperimentinio bandymo duomenis. Nustatomi realūs termodinaminio efektyvumo ir naudingumo koeficientai. Jautrumo analizės metu atliekami elektrinio šildytuvo efektyvumo ir naudingumo skaičiavimai. Pateikiami rezultatai, išvados ir rekomendacijos tokios rūšies įrenginių tobulinimui ir tolimesniam vystymui. Darbo apimtis – 94 psl. teksto be priedų, 66 iliustr., 7 lent., 43 bibliografiniai šaltiniai. / Master's thesis examines air handling units with integrated air source heat pumps. Literature review about this type of units was carried out. An overview of mostly important heat pump‘s components are given. Thesis was an opportunity to design, construct and analyze these units. Different heat pump‘s operation modes examined and main issues turned out. Based on experimental data variable speed compressor's capacity modulation results defined. Moist air thermodynamic calculations have been made and air handling unit with integrated air source heat pump experimental energy and exergy efficiency was defined. Sensitivity evaluation changing heat pump with electric heater carried out. The main recommendation provided for units designing and further development. Thesis consist of 94 p. text without appendixes, 66 pictures, 7 tables, 43 bibliographical entries.
12

Návrh zařízení pro úpravu mikroklimatu v rekonstruovaném rodinném domě / Design of an HVAC system in a retrofitted family house

Vacenovský, Jan January 2018 (has links)
This work is devoted to the design of a microclimate facility in a family house. The first part contains analysis of thermal losses before and after using thermal insulation. Based on this analysis, a heating system is proposed, including the necessary technical calculations for the operation of the system. As a heat source, a condensing boiler is selected. At the next point, the thesis focuses on the calculation of the heat gains in selected rooms in order to design a cooling device. A multisplit system is selected for cooling the rooms. In the next part the thesis deals with the design of forced ventilation of selected rooms. The ventilation system provides the necessary air exchange and covers heat losses through ventilation. At the end of the thesis is outlined the concept of regulation of individual systems and also the requirements for individual professions are described.
13

Horský rekreační komplex, Wellness & Spa / Montane Recreation complex, Wellness & Spa

Najman, Jakub January 2019 (has links)
The topic of this thesis is project and documentation for montane recreative komplex, which is situated in Loučná nad Desnou. The object is located in land-registered area Kouty nad Desnou. In this region is famous ski slope and from the hotel is nice view on this ski slope. The montane hotel respects criteria of protected landscape area Jeseníky. Architectonic plan is designed with respect to mountain scenery. In the hotel are 18 rooms with possibility 9 extra beds for 51 guests. There is a option to visit restaurant all-day. This restaurant is part of the hotel. Recreative zone is situated in north part of the hotel and this zone is devided into two parts. First part, is public and serves for all guests. This zone includes pool with whirpool bath, sauna and steam bath. Second zone is private. This zone provides privacy in massage rooms or in rooms for aromatic bath. The object is devided into four floors. Three floors are overground and one floor is underground. In the second and thirds floors are hotels rooms and rooms for clean-up and employees. First overground floor containes restauration with kitchen, coffee-bar, main hall with reception and all recreation zone, which passes to the second floor. Basement is consists of air handling units, technical rooms and housed mass garages with 21 places. Main entrance to the hotel is from south-eastern side and it is open space which passes to gallery. Type of constructional system is reinforcement framework. It is made of monolithic pillars placed on reinforcement column base with beam PEIKKO DELTABEAM. On this beam are located reinforcement ceilings elements SPIROLL. Fulfil brickwork is SILKA covered by combination of heating EPS with MW, ISOVER TWINNER with 200 millimetre thikness. Roof is combination of double cover flatbed roofs and single cover flatbed roofs. In the second floor is roof with posibility to walk to a terrace. Project was process in program ArchiCAD like BIM. In process of making was important to
14

Vzduchotechnické jednotky / Air handling units

Cakl, Dominik January 2020 (has links)
The diploma thesis deals with the analysis of problems of unevenly stratified air flow in air handling units and subsequent optimization with respect to speed ratios, energy efficiency and legislative requirements. Methods of solving the problem are theoretical and experimental, while the theoretical part deals with air distribution by means of air-conditioning fans with a focus on their aerodynamics, pressure conditions and other requirements, which are an integral part of properly designed equipment. In the experimental part of the thesis was applied a proposal of an innovative technical approach to a specific model of air conditioning assembly, which was implemented in the laboratories of the Institute of Building Services.
15

Mikroklima bazénových hal / Indoor environment of pool halls

Halla, Ondřej January 2019 (has links)
The diploma thesis deals with the problems of the indoor environment of swimming pool halls. Firstly, it describes issues and principles of designing HVAC system in the areas with high humidity production. Thesis then focuses on various approaches to calculations of evaporation from the water surface and different possibilities of dehumidification including different types of HVAC units. This knowledge was applied to the design of HVAC system for particular assigned building, for which are proposed two different solutions. Thesis includes experimental part, its aim is to analyse one specific critical part of the hall. Based on local surveying and long-term measurements a few possibilities of improvement are suggested.

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