Browsing Moksliniai ir apžvalginiai straipsniai / Research and Review Articles by VGTU prioritized fields "AE0303 - Pastatų energetika / Building energetics"
Now showing items 1-20 of 30
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A comparative thermodynamic analysis of air handling units at variable reference temperature
(Applied thermal engineering, 2018)Ventilation and air conditioning systems are emerging as the major energy consumers in low energy buildings. The objective of this paper is to present new methodology for assessment of Air Handling Units (AHUs) taking into ... -
A thermal diagnostic method based on a new approach of wall discretization in dynamic state
(Journal of cleaner production, 2019)This paper contains a thermal diagnostic method based on a new approach of wall discretization for buildings that predict energy behaviors, examined in both summer and winter periods. A computational approach has been ... -
Administracinio pastato energijos vartojimo efektyvumo spragos vertinimas
(Mokslas – Lietuvos ateitis. Aplinkos inžinerija = Science – Future of Lithuania. Environmental engineering, 2021)Patalpų mikroklimatui sukurti tenkanti didelė globalių energijos sąnaudų dalis jau keletą dešimtmečių vis labiau domina pasaulinę bendruomenę, vis dažniau ši problema atsiduria ir politikos dėmesio centre. Šiame straipsnyje ... -
Akumuliacinės talpyklos dinaminio veikimo eksperimentinis ir skaitinis tyrimas
(Mokslas – Lietuvos ateitis. Aplinkos inžinerija = Science – Future of Lithuania. Environmental engineering, 2019)Augant suvartojamos energijos kiekiui, taip pat jos gamybos metu į aplinką išmetamų teršalų apimčiai, vis dažniau atsigręžiama į atsinaujinančius energijos šaltinius ir jų transformavimo technologijas. Tai tampa ypač ... -
Analysis of the payback of primary energy and CO2 emissions in relation to the increase of thermal resistance of a building
(Energy and buildings, 2018)The authors of the paper present a methodological approach for combining environmental and energy life cycle assessments of building energy refurbishments towards a nearly zero-energy building. The authors applied the ... -
Atliekinės šilumos naudojimo galimybės medicinos priemonių gamybos paskirties pastate
(Mokslas – Lietuvos ateitis. Aplinkos inžinerija = Science – Future of Lithuania. Environmental engineering, 2020)Straipsnyje nagrinėjamos atliekinės šilumos naudojimo galimybės medicinos priemonių gamybos pastate. Gamybos metu šeši kompresoriai veikia nuolatos, o jų generuojamas šilumos perteklius šalinamas per aušykles arba iš dalies ... -
Comparative study of various thermal analyses of smart windows in cubic building design
(Journal of engineering science and technology review, 2018)This paper presents a thermal analysis of compounds called smart windows in typical building design; such windows are covered with a vanadium dioxide film doped with tungsten and are characterized by their phase transition ... -
Development and analysis of a dynamic energy model of an office using a Building Management System (BMS) and actual measurement data
(Energies: Special issue: Sustainable energy technologies for transition to energy positive buildings, 2021)Calibration of the energy model of a building is one of the essential tasks required to determine the efficiency of building management systems, and both their own and other systems’ improvement potential. In order to make ... -
Eksperimentinio šilumos siurblio ciklo valdymo algoritmo paieška
(Mokslas – Lietuvos ateitis. Aplinkos inžinerija = Science – Future of Lithuania. Environmental engineering, 2019)Straipsnyje analizuojamas eksperimentinis šilumos siurblys „oras–oras“, kuris naudojamas šilumai atgauti mechaninėje patalpos vėdinimo sistemoje. Darbo tikslas – ištirti eksperimentinio šilumos siurblio „oras–oras“ veikimą ... -
Eksploatuojamų gyvenamosios vieno ar dviejų butų paskirties pastatų sandarumo matavimų analizė
(Mokslas – Lietuvos ateitis. Aplinkos inžinerija = Science – Future of Lithuania. Environmental engineering, 2021)Siekiant Europos Sąjungos (ES) energijos vartojimo efektyvumo tikslų visose šalyse narėse yra įvestas privalomas naujai statomų ar parduodamų pastatų energinio naudingumo sertifikavimas. Sertifikuojant pastatus yra nustatyti ... -
Energinės ir ekserginės analizės taikymas oro paruošimo įrenginio su šilumos siurbliu veikimui tirti
(Mokslas – Lietuvos ateitis. Aplinkos inžinerija = Science – Future of Lithuania. Environmental engineering, 2020)Augant energiškai efektyvių pastatų sektoriui, vėdinimo sistemos tampa vis svarbesnės ne tik tiekiant švarų orą, bet ir vartojant energiją. Šio straipsnio tikslas – aprašyti ir išnagrinėti oro paruošimo įrenginio (OPĮ) su ... -
Energy performance gap analysis in energy efficient residential buildings in Lithuania
(Environmental and climate technologies, 2021)Implementing provisions of the EPBD all Member States require to provide EPC (Energy Performance Certificate) when buildings are constructed, sold or rented. The purpose of the certificate is to compare buildings' performance ... -
Experimental and theoretical investigation of the natural convection heat transfer coefficient in Phase Change Material (PCM) based fin-and-tube heat exchanger
(Energies: Special issue: Energy storage systems and conversion processes, 2021)Latent heat thermal energy storage systems allow storing large amounts of energy in relatively small volumes. Phase change materials (PCMs) are used as a latent heat storage medium. However, low thermal conductivity of ... -
Experimental comparison of the operation of PCM-based copper heat exchangers with different configurations
(Applied thermal engineering: Special sssue on the 10th International Conference on Multiphase Flow, 2020)Designing a heat exchanger/accumulator which can store a high quantity of heat in a brief period of time is one of the most important technological challenges. In this study, heat exchangers are designed for industrial ... -
Experimental investigation and prediction of charging/discharging performance of phase change material based thermal energy storage unit
(Environmental and climate technologies, 2021)The study presents the experimental and analytical investigation, which was carried out to evaluate the charging/discharging performance of phase change material (PCM) in the thermal energy storage (TES) unit. The experiments ... -
Experimental investigation of frost formation influence on an air source heat pump evaporator
(Energies: Special Issue Selected Papers from 17th International Conference of Young Scientists on Energy and Natural Sciences Issues (CYSENI 2021), 2021)The application of heat pumps in the heating systems of buildings in the cold or transitional season is becoming an increasingly common practice not only in Lithuania but in other countries as well. Due to the growing ... -
From entropy generation to exergy efficiency at varying reference environment temperature: case study of an air handling unit
(Entropy, 2019)The continuous energy transformation processes in heating, ventilation, and air conditioning systems of buildings are responsible for 36% of global final energy consumption. Tighter thermal insulation requirements for ... -
Heating and cooling primary energy demand and CO2 emissions: Lithuanian A+ buildings and/in different European locations
(Buildings, 2022)National legal and political regulation in the field of energy efficiency is closely connected to minimizing energy consumption in buildings. Within the framework of implementing Directive 2018/844/EU on the energy performance ... -
Investigation of heat pump efficiency in Baltic States using TRNSYS simulation tool
(Environmental and climate technologies, 2022)A heat pump is one of the most popular energy transformation devices to provide the building with the necessary heating and cooling energy during the cold and warm seasons. Air source heat pumps (ASHP) in building heating ... -
Investigation of the aerodynamic and thermal performance of a Decentralised Air Handling Unit (DAHU) heat recovery using balls charge
(Journal of building engineering, 2023)Decentralised ventilation solutions are applicable for both new and renovated buildings. This has a positive economic impact and helps ensure that there is sufficient fresh air even in limited indoor spaces. Unfortunately, ...