Sandro Nizetic

Sandro Nizetic
University of Split · Department of Thermodynamics

Prof. Dr.
Editor in Chief - Energy Sources Part A: Recovery, Utilization and Environmental Effects

About

175
Publications
68,081
Reads
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3,965
Citations
Introduction
Applied and Theoretical Thermodynamics, Energy Efficiency,Renewable energy technologies, Solar Energy, Energy Sustainability, Smart and IoT supported technologies in energy related applications.
Additional affiliations
October 2015 - March 2016
University of Split
Position
  • Vice Dean for Research and International Relations

Publications

Publications (175)
Article
A hybrid solar photovoltaic-thermal collector is the combination of a solar thermal unit and a photovoltaic panel for the simultaneous generation of heat and electricity. In these systems, a fluid is used to cool photovoltaic panels and, thus, prevent their reduction of electrical efficiency. The hot fluid leaving the system can also be used in var...
Article
The supercritical carbon dioxide (S-CO2) Brayton cycle is considered to be one of the most promising cycles for the fourth-generation nuclear power system. In this paper, the S-CO2 Brayton combined cycles composed of organic Rankine cycle (ORC) and Kalina cycle as the bottom cycle are proposed to improve the cycle performance. A new system performa...
Article
The present work compares the biofuel production efficiency of Padina tetrastromatica and Sargassum swartzii macro-algae biomass by fermentation with Saccharomyces cerevisiae and Zymomonas Mobilis. The optimal pre-treatment factors were identified by studying the effect of temperature, pH, and enzyme concentration on the conversion of macroalgae bi...
Article
Full-text available
In this study, a numerical simulation of a single pass welding of two thick-walled pipes with the buried-arc method was performed in order to determine the residual stresses caused by welding. The numerical simulation procedure in the thermal analysis was performed by the element birth and death method while the structural analysis was performed si...
Article
In recent years, searching for efficient solutions to improve the emission and performance characteristics of diesel engines is considered as one of the essential and urgent work. Metal nanoparticles with a large surface area and high heat transfer coefficient could provide the impressive additive ability to the fuel reactivity and atomiza-tion. Th...
Article
Nanofluids have gained significant popularity in the field of sustainable and renewable energy systems. The heat transfer capacity of the working fluid has a huge impact on the efficiency of the renewable energy system. The addition of a small amount of high thermal conductivity solid nanoparticles to a base fluid improves heat transfer. Even thoug...
Article
Using phase change material (PCM) in the building envelope can provide energy saving advantages by shaving peak heating and cooling loads. However, the poor thermal conductivity of PCMs limits their application and potential benefits because of inadequate heat storage/release rates. Increasing effective thermal conductivity by adding metal nanopart...
Article
The study focused on the development of a three-dimensional computational model for water spray cooling of photovoltaic panels. A water spray cooling technique can ensure performance improvement due to a reduction in panel operating temperatures due to its self-cleaning effect. The model was used to estimate the optimal amount of overall water util...
Article
Waste-derived biogas and third-generation algal biodiesel are attractive alternative fuels to substitute fossil diesel in a diesel engine. However, using biodiesel as a pilot liquid fuel and biogas as the main fuel in a diesel engine is a complicated and highly non-linear process. The current study seeks to predict and optimize the combustion and e...
Article
Full-text available
The inherent capability and increased efficiency of microalgae to convert sunlight into solar chemical energy are further enhanced by the higher amount of oils stored in microalgae compared to other land-based plant species. Therefore, the widespread interest in producing biofuels from microalgae has gained considerable interest among leading energ...
Article
The proper handling of Municipal Solid Waste (MSW) is critical due to its high generation rate and the potential to minimise environmental impacts by simultaneously reducing resource depletion and pollution. MSW utilisation for recycling is important for transforming the linear economy model into a circular one. The current review analyses and cate...
Article
This novel photovoltaic-thermal (PVT) collector work design was proposed and experimentally tested in Mediterranean climate conditions. The integral evaluation of the PVT collector design was obtained considering performance, economic and environmental aspects. The specific PVT design consisted of four cooling blocks, where each block was equipped...
Article
Using two layers of phase change material (PCM) instead of one to improve the thermal energy storage of PCM is a promising way to minimize thermal loads in buildings. This study aimed to maximize the latent heat utilization by splitting the PCM into two layers and adjusting their location and melting temperature. Seven scenarios were created using...
Article
The maritime sector has been searching for efficient solutions to change energy consumptions patterns of ports and ships to ensure sustainable operation and to reduce CO2 emissions to support sustainable transport in line with International Maritime Organization (IMO) policy guidelines. Therefore, pursuing smart strategies by utilizing renewable en...
Article
The smart control of the biogas-hydrogen engine is needed to improve the overall energy efficiency of the hybrid renewable energy system. The paper presents some simulation results of the optimal control parameters of the engine aiming to achieve the compromise between performance and pollutant emissions of the biogas-hydrogen engine. In neat bioga...
Article
Wastewater treatment may help to reduce water shortages, whilst concurrently recover energy and nutrients, leading to some of the exploitation of important sources being offset. Compared to other approaches, wastewater purification via adsorption is highly-desirable. The reason is that with this simple and better-to-regenerate technique, heavy meta...
Article
In recent years, lignocellulosic biomass has emerged as one of the most versatile energy sources among the research community for the production of biofuels and value-added chemicals. However, biomass pretreatment plays an important role in reducing the recalcitrant properties of lignocellulose, leading to superior quality of target products in bio...
Article
This paper reviews the new progress, challenges and barriers on production of pyrolysis oil from the plastic waste. Among the different processes thermal and catalytic are the potential methods to produce oil. Since the global plastic production increased over years the accumulation of plastic waste increases. Thus, converting the waste plastics in...
Article
Digitalization in various engineering fields enables a path to progressive development possibilities that are nowadays mainly focused on the utilization of smart technologies in different applications. The implementation of smart technologies leads to more efficient customer oriented services, increases process efficiency, provides better security,...
Article
Full-text available
The novel potential of hybrid phase change materials (PCM) as a mix of animal fat, specifically pork fat (lard), with edible and waste oil from the food processing industry was investigated in this paper. Lard is a relatively accessible phase change material of organic origin, with a significantly lower unit price when compared to conventional PCM...
Article
The objective of the present work is to examine the effects of adding t-butyl peroxide (TB) additive with diesel fuel and biodiesel originated from Mahua oil and waste Palm oil in form of quaternary blends with varying injection timing (21obTDC (before Top Dead Centre), 23obTDC, and 25obTDC) on performance, emission, and combustion characteristics...
Article
Demands for the decline of CO2 emissions resulted in a significant transformation of the energy systems working on carbon sources towards more sustainable, clean, and renewable characteristics. Hydrogen is emerging as a secondary energy vector with ever-increasing importance in the decarbonisation progress. Indeed, hydrogen, a green and renewable e...
Article
The objective of the present work is to examine the effects of adding t-butyl peroxide (TB) additive with diesel fuel and biodiesel originated from Mahua oil and waste Palm oil in form of quaternary blends with varying injection timing (21obTDC (before Top Dead Centre), 23obTDC, and 25obTDC) on performance, emission, and combustion characteristics...
Article
Despite the development of other propulsion systems, the internal combustion engines will continue to be an essential element of vehicle propulsion on the road, as the sole source of propulsion or in hybrid drives. The main challenge for the regulatory bodies is to find suitable strategies to ensure the lowest possible impact on the environment, fo...
Article
The current study aims to investigate the effects of advanced injection timing combined with dual-fuel mode on the diesel engine's overall performance, emission, and combustion characteristics under various loading conditions. In this study, blends of waste oil methyl ester (WOME) at 10%, 20%, and 30% v/v concentration and diesel fuel were used as...
Article
Numerical simulations of photovoltaic solar panels are performed using temperature-dependent layer properties. The results are compared with experimental data recorded from a 50 W mono-crystalline panel and a 50 W poly-crystalline panel. The comparison shows that, for both panels, introducing temperature dependencies in the layer properties can sig...
Article
A novel hybrid cooling strategy was proposed for the free-standing photovoltaic panel (PV), i.e. the design of a novel photovoltaic-thermal collector (PVT) was proposed. The hybrid cooling approach assumes both passive (PCM-Phase Change Material) and active (water) cooling approach with an incorporated smart regulation system. The design details of...
Article
Battery Thermal Management System (BTMS) plays a significant role in determining the Electric vehicles (EVs) operating range and battery operating life cycle. Indeed, Phase Change Material (PCM) with outstanding characteristics like passive energy utilization to cool the battery, low cost, and effective operation seems to be an attractive option to...
Article
Microbial fuel cell (MFC) is lauded for its potentials to solve both energy crisis and environmental pollution. Technologically, it offers the capability to harness electricity from the chemical energy stored in the organic substrate with no intermediate steps, thereby minimizes the entropic loss due to the inter-conversion of energy. The sciences...
Article
In this experimental investigation, an effort is executed to evaluate and compare the energetic and exergetic performances of three nanofluid-based photovoltaic/thermal (PVT) systems, namely a PVT system with a sheet-and-serpentine tube collector (case-I), a PVT system with a sheet-and-grooved serpentine tube type collector with a groove pitch of 8...
Article
The concentrations of heavy metal ions found in waterways near industrial zones are often exceed the prescribed limits, posing a continued danger to the environment and public health. Therefore, greater attention has been devoted into finding the efficient solutions for adsorbing heavy metal ions. This review paper focuses on the synthesis of carbo...
Article
Being declared a global emergency, the COVID-19 pandemic has taken many lives, threatened livelihoods and businesses around the world. The energy industry, in particular, has experienced tremendous pressure resulting from the pandemic. In response to such a challenge, the development of sustainable resources and renewable energy infrastructure has...
Article
The production of chemicals and fuels from renewable biomass with the primary aim of reducing carbon footprints has recently become one of the central points of interest. The use of lignocellulosic biomass for energy production is believed to meet the main criteria of maximizing the available global energy source and minimizing pollutant emissions....
Article
Global concerns about CO2 levels in the atmosphere, energy security, and the depletion of fossil fuel supply have been the key motivation to develop bio-based fuel resources, which leads to promising and potential strategies of renewable and carbon-neutral biofuels. Among biofuels being strongly developed, 2,5-dimethylfuran (DMF) is a new alternati...
Article
This paper reports experimental work related to passively cooled free-standing silicon photovoltaic panels (PV) in different cooling configurations with a considered utilization of phase change materials (PCM). The PV panels (20Wp) were examined in typical Mediterranean climate conditions during several months of field monitoring. The focus of the...
Article
This paper proposes a novel method combining Pinch Methodology and waste hydrogen recovery, aiming to minimise fresh hydrogen consumption and waste hydrogen discharge. The method of multiple-level resource Pinch Analysis is extended to the level of Total Site Hydrogen Integration by considering fresh hydrogen sources with various quality. Waste hyd...
Article
The two-wheelers powered by battery, hydrogen fuel cell, or a combination of these two power sources are the potential candidates for the greenhouse gas emission reduction strategy in the future although they have been running into difficulties relating to the onboard energy storage technology. Therefore, the main aim of this review paper is to pre...
Article
The paper presents a comparative study on combustion and emissions of hydrogen-enriched biogas premixed charge in direct injection dual fuel (DIDF) engine and indirect injection dual fuel (IDIDF) engine. The results show that the IDIDF engine outperforms the DIDF engine in terms of higher indicative engine cycle work (Wi), lower emissions of CO, so...
Article
Biodiesel has been emerging as a potential and promising biofuel for the strategy of reducing toxic emissions and improving engine performance. Computational methods aiming to offer numerical solutions were inevitable as a study methodology which was sometimes considered the only practical method. Artificial neural networks (ANN) were data-processi...
Article
Absorber tube in parabolic trough concentrating systems is located at the location of the focal line and a fluid passes through it, the temperature of which increases due to receiving heat from sunlight. The more heat the fluid can absorb from the concentrated solar energy, the better the performance of the system. Since turbulators can be used in...
Article
This work was focused on development of thermo-electrical numerical model for circumstance of free-standing photovoltaic (PV) panel exposed to hot-spot effect. The model was developed for partial hot-spot situation and for serial cell connection. The developed 3D model uses a novel approach via two-way coupling of thermal and electrical models. The...
Article
The utilization of renewable lignocellulosic biomasses for bioenergy synthesis is believed to facilitate competitive commercialization and realize affordable clean energy sources in the future. Among the pathways for biomass pretreatment methods that enhance the efficiency of the whole biofuel production process, the combined microwave irradiation...
Article
Improving the efficiency of building energy systems is crucial to reach a goal related to the high – performance building, particularly in the space heating and air - cooling domain, which are considered as leading energy consumption systems in buildings. Current trends in the smart building paradigm allowed efficient implementation of user-centric...
Article
This work was focused on the investigation of various photovoltaic thermal (PVT) solar collector designs incorporating phase change materials (PVT-PCM systems) as suitable material for thermal management. In general, the PCM materials utilized in such systems were analyzed along with a discussion regarding the main thermal properties. The experimen...
Article
The environmental pollution and the depletion of fossil energy sources in recent years have been considered as a global “hot-button topic”, urging the scientists, managers, and policymakers to search sustainable and green energy sources. In the progress of developing the alternative fuels, biomass-derived biofuels are believed to be potential and r...
Article
The foremost alternative for running a PV unit is chosen among five items using analytical hierarchy process (AHP) decision-making approach. Two items are individual PV usage and pure water based PV/T system, and three other ones are, Al2O3, TiO2, and ZnO nanofluid based PV/T technologies. The experimental data gathered throughout a year for a 250...
Article
The threat of environmental pollution caused by spilled oil is rapidly increasing along with the expansion of oil exploration, the development of maritime activities and industrial growth. Oil spill incidents usually affect seriously the ecosystem and human life. Therefore, the treatment and recovery of the oil spill have been considered as an ultr...
Article
Full-text available
Currently, the considerable decline in fossil fuel resources and the high rise in vehicle emissions have prompted researchers and governments to formulate strategies for sustainable energy development. In addition to imposing strict laws, promoting sustainable energy sources such as the development of new types of non-fossil fuels has been consider...
Article
This paper reports an experimental investigation focused on nano-enhanced phase change materials (NEPCM). Two different types of phase change materials (RT28 HC and RT26) with relatively low thermal conductivity and reasonable volumetric specific heat capacity were utilized as the base for NEPCMs with four types of nanoparticles (CuO, ZnO, Ag, and...
Chapter
One way of simultaneously minimising the use of fresh resources and pollution reduction is the practice of industrial and urban symbiosis, implementing Circular Economy. In the current work, it has been shown that the circularity rate alone is not a sufficient criterion to achieve resource and footprint minimisation. It is necessary to evaluate the...
Research Proposal
Full-text available
The Special Issue of ASME Journal of Energy Resources Technology will focus on thermodynamic, energy, exergy, sustainability, thermoeconomic, enhanced assessments and optimizations of various vehicle systems including road, aerial, rail, and marine vehicles. The Special Issue welcomes submissions related to energy utilization, efficiency, energy co...
Article
In recent years, 2,5-Dimethylfuran (DMF) is found as a promising new biofuel generation that could be synthesized from renewable and available lignocellulosic biomass in small-to-large scale. The combustion characteristics of DMF are believed to be comparable to those of fossil fuels. Many studies have focused on the synthesis pathways of DMF from...
Article
Full-text available
In this study, we performed a numerical simulation and experimental measurements on a steel circular patch welded structure to investigate the temperature and residual stress field distributions caused by the application of buried-arc welding technology. The temperature histories during the welding and subsequent cooling process were recorded for t...
Article
Photovoltaic (PV) technologies represent a key role in the ongoing energy transition towards the decarbonisation of convectional power systems and to reduce the harmful population impact to environment. Nowadays, the majority of market available photovoltaic PV technologies are silicon based with a usual energy conversion efficiency of less than 20...
Article
Globally, lignocellulosic biomass is known as the largest renewable energy source and it is thus received much attention from the scientist community for the synthesis progress of bio-based fuels and chemicals. Among the biomass-originated bio-compounds, 2,5-dimethylfuran (DMF) was considered as the potential alternative fuel possessing similar phy...
Article
Being one of the furan-based compounds, 2,5-dimethylfuran (DMF) is known as a critical platform substance and an ideal green solution on the pathway of finding alternative fuels to assuage the ever-increasing shortage of fossil energy as well as to reduce the negative and dangerous impacts on global climate and environment. Therefore, DMF could be...
Article
Full-text available
This manuscript deals in confirmation of drop in photovoltaic panel temperature under load. Two panels are compared, one with the load and other without the load. The panel under load should have larger heat dissipation (i.e. be cooler), when electrical yield is taken as an outgoing heat flow. During the experiment, a thermovision of the panels und...
Article
The development of information technologies allowed digitalization in different fields, as in for instance the engineering field which is one of the most challenging fields, since smart supported solutions can bring important benefits to society in general. The energy sector is already experiencing gradual digitalization with important advances to...
Article
Transient solidification of phase change material (PCM) dominated by natural convection is studied in this work. Water is solidified inside an insulated tank while local temperature and liquid/solid phase distributions are studied numerically and experimentally until a steady-state is reached. During the analysis, it is noted that water solidificat...
Article
This paper reports and discusses the results of a field study focusing on the examination of thermal comfort conditions in two public buildings in Croatia. The wearable sensors were used for monitoring the occupants’ metabolic responses, along with the standard equipment for measuring thermal comfort. The occupants’ subjective comfort sensation was...
Article
An optimization study was conducted for an external office wall containing a phase change material (PCM) layer under intermittent cooling operation. The design parameters such as location, PCM layer thickness and phase transition temperature were optimized to maximize energy savings by efficient use of latent heat. Moreover, simulations were perfor...
Article
In phase-change applications, once the melting process is completed, the natural convective heat transfer of liquid material may be promoted or degraded by the fins, which is the main motivation of this research. For this reason, the natural convection heat transfer inside a PCM container that can be a representative model for PV/PCM systems is num...
Article
The preparation process of the nanocomposites and nanofluids strongly affects their general physical properties and stability in general. They are very sensitive with respect to the quality of the preparation process which should be obtained carefully to produce quality and reliable homogeneous samples. This paper provides a useful analysis in diff...
Article
The rapid development and implementation of smart and IoT (Internet of Things) based technologies have allowed for various possibilities in technological advancements for different aspects of life. The main goal of IoT technologies is to simplify processes in different fields, to ensure a better efficiency of systems (technologies or specific proce...
Article
The recent pandemic caused by COVID‐19 has globally affected air transport mobility as well as the airline industry in general. Numerous restrictions have been implemented in airline transport, which is potentially leading toward severe long‐term impacts on the global airline industry. In this paper, air transport mobility was analyzed regarding Eu...
Article
Preface The majority of the energy needs of the world’s growing population is still fulfilled by fossil fuels; therefore, focusing on energy savings is imperative. Efficient heat transfer equipment becomes necessary to reduce energy consumption and thus save energy. Such techniques not only reduce emissions and pollution, but they also help control...
Article
This paper provides a review of nano-enhanced phase change materials (NEPCM) and nanofluids incorporated in experimental systems, i.e. different applications. The effect of the added nanomaterials on the main thermal properties was also discussed and analyzed in detail. According to the provided review, it was found that the addition of nanoparticl...
Article
Full-text available
Thermal renovation of existing buildings is one of the most popular actions to decrease the energy consumption for heating and cooling. However, to the best of the authors’ knowledge, there are no long-term field studies that present the influence of hydraulic rebalancing of the heating system after the thermal renovation of the building’s envelope...
Article
Supersonic combustion ramjet (scramjet) is a variant of ramjet in which the combustion takes place at supersonic velocity. The flow physics inside the scramjet combustor is quite complex due to the fact that the mixing and completion of the combustion take place in a short time, which is of the order of milliseconds. This study focuses on flow char...
Article
Internal combustion engines will be the main power for the vessels, heavy duty vehicles and thermoelectric plants in the future as it is nowadays. Finding the way to reduce environmental impact and to produce cleaner energy is the main task of engine manufacturers. In this paper, different methods and systems of diesel emission control are analyzed...
Article
Silicon-based photovoltaic (PV) panels are sensitive to operating temperatures, especially during exposure to high solar irradiation levels. The sensitivity of PV panels is reflected through the reductions in photovoltaic energy conversion efficiency (electrical efficiency) and in PV panel lifetime due to thermal fatigue. In this study, different a...
Article
Under the general topic of the impact of floating photovoltaics (FPVs) systems on water basins, the present study aims to model and analyze the effect of FPVs on the evaporation rate of water surfaces. The estimation of the evaporation of the water surface of a basin is usually calculated using mathematical evaporation models that require knowledge...