DSpace at VGTU: Recent submissions
Dabar rodomi įrašai 21-40 iš 53028
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Impact assessment of the urban development and the nature frame upon the use of the land designated for agricultural purposes
(8th International Conference “Environmental Engineering” (ICEE-2011), 2011)The necessity to limit the transfer of productive arable land for other purposes, to adjust economical measures assigned for the maintenance of the optimal land use is emphasized in international strategic documents. ... -
Quality of experience evaluation and enhancement of video streaming services in cellular networks
(2026)This doctoral dissertation investigates the evaluation and enhancement of Quality of Experience (QoE) in 4G and 5G cellular networks. This research belongs to the field of Electrical and Electronics Engineering, specifically ... -
Sustainable renovation and evaluation of blocks of multiapartment houses
(8th International Conference “Environmental Engineering” (ICEE-2011), 2011)A significant amount of energy, materials and finances are consumed when using and demolishing the buildings. Proper planning, design, construction, management and marketing allow to reduce the environmental impact and ... -
Assessment of the cooling potential of an earth-tube heat exchanger in residential buildings
(8th International Conference “Environmental Engineering” (ICEE-2011), 2011)At present, we can observe the increase in glazing area of all types of buildings. Large size of south windows to allow for high passive solar heat gains during the heating period and can reduce primary energy demand. But, ... -
The environmental analysis of insulation-materials in the context of sustainable buildings
(8th International Conference “Environmental Engineering” (ICEE-2011), 2011)Sustainable building means constructing structures using processes that are environmentally responsible and resource-efficient through the various stages of a building's life-cycle, namely design, construction, ... -
Aviacijos paslaugas teikiančių organizacijų pokyčių valdymo sprendimai
(2026)Disertacijoje nagrinėjama aviacijos paslaugas teikiančių organizacijų veiklos pokyčių valdymo sprendimų parinkimo neapibrėžtumo sąlygomis problematika, sprendimus pagrindžiant tikimybinėmis priežastinėmis sąveikomis. Tyrimo ... -
Technologinėmis atliekomis modifikuoto betono atsparumas užšaldymo ir atšildymo ciklams bei šarminei korozijai
(2026)Darbe tiriamas betonas, modifikuotas stiklo apdirbimo atliekomis, betono šlamu ir kristalizuojančiu priedu. Tikslas – sukurti šalčiui ir šarminei korozijai atsparų betoną, dalį cemento keičiant stiklo atliekomis, o smėlį ... -
Influence of unsteady thermal state on productivity in office buildings
(8th International Conference “Environmental Engineering” (ICEE-2011), 2011)Indoor air temperature has a significant effect on productivity of the employees in office buildings. It may reduce work performance and cause financial losses in a long term perspective. However, sudden variations of air ... -
Simulation of thermal stratification in the heat storage for CHP plant
(8th International Conference “Environmental Engineering” (ICEE-2011), 2011)Thermal stratification phenomenon is successfully used to store and retrieve thermal energy from heat storages. The aim of this study is to compare two simulation models for describing thermal stratification in the heat ... -
The house plan drawing and heating system automated design
(8th International Conference “Environmental Engineering” (ICEE-2011), 2011)The heating system design is directly related to the building’s plan drawings. The article reviews the possibility of programming a way to find the necessary information directly from the drawing and using it for designing ... -
The mathematical modelling of the absorption refrigeration machines used in energy systems
(8th International Conference “Environmental Engineering” (ICEE-2011), 2011)In the paper the authors present the possible usage of absorption refrigeration machines in air-conditioning systems and tri- and cogeneration processes. One-stage and multi-stage absorption refrigeration cycles are ... -
Temperature efficiency of rotary heat recovery units in ventilation and air conditioning
(8th International Conference “Environmental Engineering” (ICEE-2011), 2011)The article focuses on processes in rotary heat recovery ventilation and air conditioning units. Here we offer approximated engineering formula of thermal efficiency based on dimensionless parameters and further analysis ... -
Energy efficient building design legal basis
(8th International Conference “Environmental Engineering” (ICEE-2011), 2011)Nowadays there are passed many EU directives and documents aimed to stimulate development of renewable energy resources and reduction of energy demand in living houses. On another hand, energy efficient buildings in legal ... -
Selection of the efficient glazing for low energy office building
(8th International Conference “Environmental Engineering” (ICEE-2011), 2011)Building’s energy efficiency is already significantly determined at an early design stage of an architectural constructive part. It is important already at that stage to select in terms of energy and daylighting effective ... -
Analysis of ventilation system’s heat exchangers integration possibilities for heating season
(8th International Conference “Environmental Engineering” (ICEE-2011), 2011)Ventilation systems are known as intensive energy used building engineering system. Heat exchangers are the main equipments used for energy transformation in building engineering systems as well as in ventilation systems. ... -
Analysis of annual power consumption by central air conditioning systems using the climatic data stochastic statistics model
(8th International Conference “Environmental Engineering” (ICEE-2011), 2011)The purpose of the offered research is creation of a method to estimate annual power consumption by central air conditioning systems (ACS), using modern computer possibilities. The developed method is aimed at determining ... -
The analysis of the efficiency of passive energy saving measures in office building
(8th International Conference “Environmental Engineering” (ICEE-2011), 2011)The European Union is steadily tightening requirements on the energy performance of buildings. This enforces to take new measures to improve the indicators of energy both of existing and newly constructed buildings. Therefore, ... -
The role of district heating and cooling technologies in energy provisions for building sector: challenges and perspectives
(8th International Conference “Environmental Engineering” (ICEE-2011), 2011)District heating and cooling technology finally is recognized at European level as promising tool for implementing energy and environment policy goals. At the same time new approach towards traditional concept of DH systems ... -
Energy load forecasting model for integrated urban energy planning
(8th International Conference “Environmental Engineering” (ICEE-2011), 2011)Nearly 75 % of the world’s energy is consumed in urban areas and it is expected that together with the cities expansion it will grow rapidly in the future. Therefore the energy management in the urban areas is crucial in ... -
Numerical simulation of a district heating system with emphases on transient temperature behaviour
(8th International Conference “Environmental Engineering” (ICEE-2011), 2011)Numerical simulation of a district heating system was performed with emphases on transient temperature behaviour. The distortion of transient temperature throughout a heating system network was simulated using modelling approach ...