DSpace at VGTU: Recent submissions
Now showing items 1-20 of 53001
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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 ... -
Energy use in the life cycle of a low-energy building
(8th International Conference “Environmental Engineering” (ICEE-2011), 2011)Nowadays a new generation building has a variety of definitions, namely, low energy building, passive house, nearly zero energy building. These definitions refer to the building with a very high energy performance and a ... -
The small-tonnage oleo-chemical plant processing wastewater treatment and agro-utilization
(8th International Conference “Environmental Engineering” (ICEE-2011), 2011)The paper presents a developed method of pretreating wastewaters coming from small-tonnage oleochemical production and also the research results on variability of concentrations of nickel (Ni) in the soil irrigated and ... -
Analysis of the operation of a cold thermal energy storage system cooperating with an air conditioning system under temperate climate conditions
(13th International Conference “Environmental Engineering” (ICEE-2026), 2026)Increased share of renewable energy sources and the dynamic nature of cooling demand in air-conditioning systems have intensified the need for effective thermal energy storage solutions, particularly under temperate ... -
Hydraulic configuration analysis of chiller-based cooling systems
(13th International Conference “Environmental Engineering” (ICEE-2026), 2026)Hydraulic imbalance in chilled water systems remains one of the most underestimated causes of reduced cooling capacity, degraded part-load efficiency, and excessive energy consumption in commercial buildings. Although modern ... -
Current building management system capabilities and requirements in Slovakia – preliminary results from a questionnaire survey
(13th International Conference “Environmental Engineering” (ICEE-2026), 2026)The present paper reports preliminary results of a questionnaire survey of building managers in Slovakia designed to map the current use of building management systems and identifying practical requirements for improvement of ... -
Air-source heat pump integration to support district heating decarbonization in Lithuanian climate
(13th International Conference “Environmental Engineering” (ICEE-2026), 2026)Many district heating (DH) systems in Eastern Europe continue to rely heavily on fossil fuels and ageing biomass boilers, limiting operational efficiency and slowing progress toward climate targets. As these systems face ... -
Supermarket refrigeration systems in cold-climate regions: a comprehensive review of waste heat recovery potential, compatibility with district heating network integration, and forward-looking free-cooling-enabled operation
(13th International Conference “Environmental Engineering” (ICEE-2026), 2026)Supermarkets are among the most refrigeration-intensive commercial buildings, converting a large share of electricity consumption into rejected heat at condensers or gas coolers. In cold climates, low ambient temperatur ...