BrainMap

Mrs. Larisa Madalina Melita

Ph.D.

Associate Professor - UNIVERSITATEA TEHNICA DE CONSTRUCTII BUCURESTI

Researcher | Teaching staff | Scientific reviewer | Other

Web of Science ResearcherID: C-2615-2012

Curriculum Vitae (18/11/2019)

Expertise & keywords

Adaptive air solar collector with integrated nano-enhanced phase changing materials Call name: P 2 - SP 2.1 - Proiect experimental - demonstrativ
PN-III-P2-2.1-PED-2021-1903 2022 - 2024

Role in this project: Key expert

Coordinating institution: UNIVERSITATEA TEHNICA DE CONSTRUCTII BUCURESTI

Project partners: UNIVERSITATEA TEHNICA DE CONSTRUCTII BUCURESTI (RO)

Affiliation: UNIVERSITATEA TEHNICA DE CONSTRUCTII BUCURESTI (RO)

Project website: http://cambi.utcb.ro/researchprojects/nanosun

Abstract:

Building sector is one of the biggest energy consumer being responsible for more than 45% of the total worldwide energy demand. Moreover, year by year the CO2 emissions around the world are higher and global warming threats are more and more visible. In this context, the use of renewable energy sources in order to achieve indoor comfort and low energy consumptions is mandatory. Transpired solar collectors are usually a cost-effective solution taking into account their low cost of investment, high efficiency and fast return of investment. Through the nanoSUN project we propose a new innovative transpired solar collector with integrated nano-enhanced phase changing materials (NEPCMs). This solution can improve the thermal conductivity of the storage material thus achieving our goal to obtain a solar collector with low outlet temperature variations and a large amount of operating hours during the periods when solar energy is not available. Our idea is to take advantage even of the concept of climate adaptive building shell proposing an improved concept where a NEPCM core will stay in fixed position in the façade and an advanced insulation - aerogel based module – will change position as a function of season and day/night period, allowing to a true optimal behaviour of the dynamic element of solar façade.

Sistem integrat cu elemente de fatada ventilata pentru uscarea fructelor si legumelor cu aplicatie in agricultura urbana Call name: P 2 - SP 2.1 - Proiect experimental - demonstrativ
PN-III-P2-2.1-PED-2019-4165 2020 - 2022

Role in this project: Key expert

Coordinating institution: UNIVERSITATEA TEHNICA DE CONSTRUCTII BUCURESTI

Project partners: UNIVERSITATEA TEHNICA DE CONSTRUCTII BUCURESTI (RO)

Affiliation: UNIVERSITATEA TEHNICA DE CONSTRUCTII BUCURESTI (RO)

Project website: https://www.biscuitsolarproject.com/

Abstract:

The building and food sectors are two major actors in the world energy consumption. Researchers are indicating that world food and energy consumption is set to mark a significant growth by 2050. The rapid urbanization that is taking place goes together with a rapid increase in urban poverty and urban food insecurity. The overall goal of BISCUIT project is to endorse the circular economy concept, helping local urban agriculture development for a sustainable food future. The project aims to prove that the renewable energy sources used for heating the buildings during the cold period can successfully also address the energy needs of urban farming, in the process of food preservation during the cropping period, closing the loop. Thus, the symbiotic system of the building, as a shelter and as a food source, integrates seamlessly in sustainable urban communities. The scope of BISCUIT is to develop an experimental demonstrator to prove the all year-round functionality and efficiency of the concept building adaptive solar energy system, integrating cascaded Phase Change Materials, for passive air heating and food drying purposes. The specific objectives of the project are : O1: Definition of the requirements and conceptual design of the demonstrator; O2: Thermo-dynamic optimization of the solar dryer; O3: Optimization of the adaptive solar façade; O4: Integration of the optimized dryer system and solar collector in a functional experimental set-up; O5: Creation of the building integrated system model. Thus, the adaptive solar system will lead to two main objectives: providing the pre-heated building fresh air during the cold period and providing heated air for drying process of the crop resulted from local urban farming during the warm period. This project proves a technical application of energy recovery of the wasted heat generated by energy usage during summertime, also contributing to the heat island effect.

Smart system for water quality monitoring Call name: P 2 - SP 2.1 - Proiect de transfer la operatorul economic
PN-III-P2-2.1-PTE-2019-0394 2020 - 2022

Role in this project: Key expert

Coordinating institution: MIRA TECHNOLOGIES GROUP SRL

Project partners: MIRA TECHNOLOGIES GROUP SRL (RO); UNIVERSITATEA TEHNICA DE CONSTRUCTII BUCURESTI (RO); INSTITUTUL NATIONAL DE CERCETARE-DEZVOLTARE PENTRU ELECTROCHIMIE SI MATERIE CONDENSATA - INCEMC TIMISOARA (RO)

Affiliation: UNIVERSITATEA TEHNICA DE CONSTRUCTII BUCURESTI (RO)

Project website: http://www.cambi.ro/smartmonwater

Abstract:

Flowing water represents the main source of drinking water for human settlements and it is obvious that its quality level directly influences the water treatment and distribution facilities. Apart from natural diurnal and seasonal variations, flowing water is often influenced by the impact of different types of pollutants resulting from human activity. The idea of this project is based on the need to monitor in real time both the flowing water and its arms, and the city sewerage systems responsible for draining used water, in order to evaluate its quality and determine the pollutant sources resulting from human activity. This project proposes to develop a smart water monitoring system based on ultra-low power multi-sensor technologies for measuring the pollutant levels, and data analysis solutions based on artificial intelligence algorithms for predicting pollution events. The system will inform citizens in real time about the pollution events and will be a research tool for the academia. It can also be extended to a wide range of pollutants and is adaptable to any locality or geographical area.

Smart buildings adaptable to the climate change effects Call name: P 1 - SP 1.2 - Proiecte complexe realizate in consorții CDI
PN-III-P1-1.2-PCCDI-2017-0391 2018 - 2021

Role in this project: Key expert

Coordinating institution: UNIVERSITATEA POLITEHNICA TIMIŞOARA

Project partners: UNIVERSITATEA POLITEHNICA TIMIŞOARA (RO); UNIVERSITATEA TEHNICA DE CONSTRUCTII BUCURESTI (RO); UNIVERSITATEA TEHNICA DIN CLUJ - NAPOCA (RO); INSTITUTUL NATIONAL DE CERCETARE-DEZVOLTARE PENTRU INGINERIE ELECTRICA ICPE - CA BUCURESTI (RO); INSTITUTUL NATIONAL DE CERCETARE-DEZVOLTARE PENTRU ELECTROCHIMIE SI MATERIE CONDENSATA - INCEMC TIMISOARA (RO)

Affiliation: UNIVERSITATEA TEHNICA DE CONSTRUCTII BUCURESTI (RO)

Project website: https://www.icer.ro/cercetare/proiecte-de-cercetare/cia-clim

Abstract:

In the construction domain, the energy represents the key-point in achieving efficient buildings.

The project proposes the improvement or institutional performances between three universities and two research institutes for the revival of the research activities and transfer of knowledge between partners.

The 4 proposed projects, centred on the efficient energy buildings, are focused on two principal research directions: (i) use of smart facades with low-thermal transfer, actively integrated for the enhancement of internal comfort and possessing a passive control of energy (by using the solar energy) and (ii) smart energy efficiency through building automatization and solar energy collectors. The resulted system, the smart house, is conceived thus to minimize the input energy for maintenance.

The Project 1 has as main objective the determination of mechanical properties of cellular materials used as thermal insulations in smart façade systems, through mechanical compression, bending and toughness fracture testing of such cellular materials.

Project 2 is focused on obtaining, characterizing and testing of high-property materials used for smart facades as thermal insulation materials and as support for special property layers: photo-catalytic layers and with reduced absorption/reflexion of UV-VIS-IR radiation.

The Project 3 has as main objective the theoretical and experimental investigation of the implementation of the electric power distribution in direct current for individual households or in small communities (smart-grid), with renewable energy sources integration.

The scope of the Project 4 is to implement the knowledge and data resulted from projects no. 1-3 through a modular laboratory demonstrative application. The project will perform an integrated study on the influence of the facades and the energetic contribution to the internal comfort of the building by considering different façade systems and respectively by integrating a smart-grid energy system.

Passive flow control for heat and mass transfer enhancement of impinging jets Call name: P 4 - Proiecte de Cercetare Exploratorie
PN-III-P4-ID-PCE-2016-0758 2017 - 2019

Role in this project: Key expert

Coordinating institution: UNIVERSITATEA TEHNICA DE CONSTRUCTII BUCURESTI

Project partners: UNIVERSITATEA TEHNICA DE CONSTRUCTII BUCURESTI (RO)

Affiliation: UNIVERSITATEA TEHNICA DE CONSTRUCTII BUCURESTI (RO)

Project website: http://www.cambi.ro/phantom

Abstract:

In many industrial applications, heat and mass transfer is controlled by the use of impinging jets. These particular flows can produce very high heat/mass transfer rates since they exhibit amongst the highest known levels of transfer capabilities for single phase flows, especially at low nozzle-to-plate distances. The great implications that vortical structures can have on surface heat or mass transfer rate motivated the flourishing of countless investigations devoted to passive and active strategies of enhancement. Passive strategies are mainly based on the optimization of the shape of the nozzle. For instance, nozzles with chamfered outlets produce 20–30% increase of the heat transfer rate when compared to non-chamfered ones. Less studied from this point of view, but maybe the most promising passive devices, lobed nozzles are also examples of configurations that lead to enhanced heat transfer values. With respect to the circular impinging jet, a cross-shaped lobed jet attains the highest average heat transfer rate in the considered range of the Reynolds number compared with other devices in the literature, with very high heat transfer peaks. On the other hand, mixing and turbulence enhancement can be also promoted directly on the impinged surface with surface structure modification, an increase of the average Nusselt number value by 12–23% can be produced. Surface roughness, in the form of cubes, was found to produce heat transfer augmentation in the range of 8–28% while a dimpled surface is reported to reduce the heat transfer coefficient as compared to a smooth surface.

The general objective of the project is to propose an optimal combination of the two types of passive flow control methods in order to achieve higher heat and mass transfer rates for impinging jet flows. Applications of this fundamental problem are related generally for impinging flows to paper and fabric drying, furnace heating, food processing, electronic industry, etc.

Environment improvement of Sludge dewatering from the wastewater treatment system of SEAU Glina by Optimizing the Local Effluent Capture and Treatment Call name: P 2 - SP 2.1 - Transfer de cunoaștere la agentul economic „Bridge Grant”
PN-III-P2-2.1-BG-2016-0158 2016 - 2018

Role in this project: Key expert

Coordinating institution: UNIVERSITATEA TEHNICA DE CONSTRUCTII BUCURESTI

Project partners: UNIVERSITATEA TEHNICA DE CONSTRUCTII BUCURESTI (RO); APA NOVA BUCURESTI S.A. (RO)

Affiliation: UNIVERSITATEA TEHNICA DE CONSTRUCTII BUCURESTI (RO)

Project website: http://www.cambi.ro/solect

Abstract:

Wastewater treatment plant Glina was built as a prerequisite for joining the European Union. Construction of a modern wastewater treatment in three steps was absolutely necessary, as required by EU, being put into operation by Apa Nova SA in 2011. On the sludge dewatering line in the Highly Dehydrated hall, the working environment for the process treatment is inadequate to exploitation for humans, due to a malfunctioning ventilation system. After processing the sludge it results different chemical compounds such as water vapor, hydrogen sulphide and ammonia, and calcium oxide powder or polymer. To avoid these problems, Apa Nova SA has to suspend the human activity, with long pauses to protect their employees. In the current conditions of operation and maintenance of this technological line there are high costs caused by increased maintenance time and hence the equipment unavailability time. To solve these problems, Apa Nova SA decided collaboration with UTCB in order to provide an optimal ventilation solution, obtained using the latest technologies available in the University. The research team can ensure concentration measurements, numerical studies conducting air flow (CFD) and experimental investigation by optical techniques (PIV and LDV) and also proposing solutions supported by the best technical skills of the team. The project aims defining an optimal solution for ventilation of the hall for highly dehydrated sludge and improvement of technological parameters and working conditions. This solution will adapt existing general ventilation system and will prepare for the introduction of local solutions to capture and treat effluent from the process line. The interdisciplinary quality of the research team recommends it as the only alternative approach absolutely necessary of such a study.

Liquid-liquid extraction of heavy metals from ground and wastewater with di-(2 etilhexil) ditiofosforic acid imoblized in activated composite membranes and their using in heavy metals recovery from industrial processes. Call name:
COD CNCSIS 8 2003 - 2004

Role in this project: Project coordinator

Coordinating institution: UNIVERSITATEA POLITEHNICA DIN BUCURESTI

Project partners: UNIVERSITATEA POLITEHNICA DIN BUCURESTI (RO)

Affiliation: UNIVERSITATEA POLITEHNICA DIN BUCURESTI (RO)

Project website: http://cncsis.gov.ro/UserFiles/File/Competitii%20derulate/Rez_2003_AT_finantate_noi.pdf

Abstract:

Modern method of water purifying with Activated Composite Membranes. The absorption capacity simulation with Artificial Neural Networks. Call name:
COD CNCSIS 71 2001 - 2002

Role in this project: Project coordinator

Coordinating institution: UNIVERSITATEA POLITEHNICA DIN BUCURESTI

Project partners: UNIVERSITATEA POLITEHNICA DIN BUCURESTI (RO)

Affiliation: UNIVERSITATEA POLITEHNICA DIN BUCURESTI (RO)

Project website: http://cncsis.gov.ro/UserFiles/File/Competitii%20derulate/Rez_2002_MEC_At.htm

Abstract:

FILE DESCRIPTION	DOCUMENT
List of research grants as project coordinator or partner team leader	Download (35.3 kb) 01/10/2019
Significant R&D projects for enterprises, as project manager
R&D activities in enterprises
Peer-review activity for international programs/projects