Dorin LET

Dr. Dorin LET


Research Focus & Metrics

Academic Career Length

15Years (2012-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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2 October 2019 in Atmosphere
Verified
Journal Article
Open access
PDF file
Cristiana RadulescuCristiana Radulescu
Cristiana Radulescu
Claudia StihiClaudia Stihi
Claudia Stihi
Rodica-Mariana IonRodica-Mariana Ion
Rodica-Mariana Ion
Ioana-Daniela DulamaIoana-Daniela Dulama
Ioana-Daniela Dulama
Sorina-Geanina StanescuSorina-Geanina Stanescu
Sorina-Geanina Stanescu
CNCristina Mihaela Nicolescu
Cristina Mihaela Nicolescu
This study is the first attempt to decipher the effect of particulate matter (PM) composition on people’s health and on historic sites, in correlation with the daily and seasonal microclimate monitoring of the indoor and outdoor areas of the Roman Mosaic Edifice museum (the maritime port of Constanta, Romania). More specifically, the increase of metal concentrations in particulate matter during the summer of 2018 and spring of 2019 in the museum under investigation could possibly be associated with the microclimates of both seasons, with coastal factors, as well as with the anthropic activities specific to the port of Constanta. FTIR and inductively coupled plasma mass spectroscopy (ICP-MS) techniques, used for the investigation of PM2.5–10 samples, revealed high concentrations of Fe, Al-rich, and soluble particles inside the investigated museum area. In this respect, the chemical measurements of the PM2.5–10 masses highlighted high concentrations of heavy metals (i.e., Al, Fe, Zn, Mn, and Pb) and low concentrations of trace metals (i.e., Cr, Ni, Cu, and Cd). Statistical analysis showed that the chemical compositions of the particulate matter in the indoor and outdoor areas of the Roman Mosaic Edifice were influenced by microclimatic conditions, mainly temperature and relative humidity (RH). A potential health risk for tourists is the thermal and humid conditions, alongside the toxic components of the particulate matter. This research seeks to provide solutions for improving the environmental conditions inside the Roman Mosaic Edifice and to offer useful suggestions concerning health promotion and the protection of museum exhibits against possible future deterioration.

1 June 2019
Verified
Conference Paper
Closed access
DLDorin LET
Dorin LET
BTBogdan Ionut Tene
Bogdan Ionut Tene
AHAdela-Gabriela Husu
Adela-Gabriela Husu
MSMihai-Florin Stan
Mihai-Florin Stan
LSLaurentiu Marian Stancu
Laurentiu Marian Stancu
ALAndreea Let
Andreea Let
This paper presents an applicative study designed to analyze PV power system energy installed at the UVT Campus' energy autonomy. The case study, analyzes the results obtained from the operation of the pilot building of the Institute of Multidisciplinary Research for Science and Technology (ICSTM). This building was designed and built according to worldwide directions in the areas of Near Zero Energy Building (nZeb) and buildings with scientific research laboratories specifics. The particular / specific problem, both at the constructive and installations levels, of great complexity, had been assessed and dimensioned at the level of energy balance with energy input obtained through Building Integrated Photovoltaic's (BIPV) technologies. The experimental results obtained demonstrate the achievement of very high levels of efficiency and economy in 2017 compared to the previous baseline year. Therefore, by consuming more efficiently and improving the PV absorption efficiency, savings of ~ 7800 Eur / 33% less energy absorbed from the national network (SEN) were achieved.

17 May 2018 in Bulletin of Materials Science
Verified
Journal Article
Closed access
PDF file
Ioan Alin BucuricaIoan Alin Bucurica
Ioan Alin Bucurica
IPIon Popescu
Ion Popescu
Cristiana RadulescuCristiana Radulescu
Cristiana Radulescu
GCGheorghe Valerica Cimpoca
Gheorghe Valerica Cimpoca
Ioana-Daniela DulamaIoana-Daniela Dulama
Ioana-Daniela Dulama
DLDorin LET
Dorin LET

1 January 2012 in Acta Physica Polonica A
Verified
Journal Article
Closed access
DLDorin LET
Dorin LET
VCV. Cimpoca
V. Cimpoca
ASA. Stancu
A. Stancu
CFC. Fluieraru
C. Fluieraru
ZBZ. Bacinschi
Z. Bacinschi

18 July 2020
Verified
Book Chapter
Closed access
PDF file
ALAndreea-Mihaela Let
Andreea-Mihaela Let
Viviana FilipViviana Filip
Viviana Filip
DLDorin LET
Dorin LET
MSMihai Simona
Mihai Simona

30 September 2024 in Journal of Science and Arts
Verified
Journal Article
Open access
ALAndreea-Mihaela Let
Andreea-Mihaela Let
Viviana FilipViviana Filip
Viviana Filip
Ioan Alin BucuricaIoan Alin Bucurica
Ioan Alin Bucurica
SSSimona Simona
Simona Simona
DLDorin LET
Dorin LET
This paper analyzes the thermodynamic performance of solar thermal heat input in HVACR (Heating, Ventilation, Air Conditioning, and Refrigeration) systems for large office and laboratory buildings. As energy demands rise, solar-assisted HVACR systems provide a sustainable solution to enhance energy efficiency. The study focuses on a configuration with two 500 L puffer tanks connected to a 3000 L Thermal Energy Storage System (TESS), utilizing direct integration during the cold season and indirect integration via an adsorption chiller in the hot season. Dynamic simulations assess key performance indicators, including solar fraction and overall system efficiency, under varying solar radiation and building load profiles. Results highlight the potential for significant energy savings and improved climate control in large-scale buildings, emphasizing the critical role of thermal energy storage in optimizing system performance throughout the year. The research conducted on the experimental platform at Institute of Multidisciplinary Research for Science and Technology (ICSTM) has identified the regimes and scenarios in which this approach can be considered both economically and technically viable.