Andrea Baccioli

Andrea Baccioli
University of Pisa | UNIPI · Department of Energy, Process and System Engineering

PhD Energy Systems

About

68
Publications
17,099
Reads
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1,405
Citations
Additional affiliations
November 2017 - present
University of Pisa
Position
  • Professor (Assistant)
November 2013 - January 2017
University of Pisa
Position
  • PhD Student
January 2017 - October 2017
University of Pisa
Position
  • Research Associate
Education
March 2009 - October 2012
University of Pisa
Field of study
  • Energy Engineering
September 2005 - March 2009
University of Pisa
Field of study
  • Mechanical Engineering

Publications

Publications (68)
Data
We are excited to announce a new Special Issue of Energies, titled "Innovative and Efficient Technologies in Hydrogen Energy Transport and Storage". Hydrogen is rapidly gaining increasing interest worldwide as an energy carrier, enabling global decarbonization and the transition toward a clean energy system. The energy produced in regions with abun...
Article
Full-text available
Accurate dew point estimation is crucial for measuring water condensation in various fields such as environmental studies, agronomy, or water harvesting, among others. Despite the numerous models and equations developed over time, including empirical and machine learning approaches, they often involve trade-offs between accuracy, simplicity, and co...
Article
Full-text available
The pulp and paper industry is under increasing pressure to reduce its energy consumption and carbon footprint. This study examines the feasibility of integrating high-temperature heat pumps (HTHP) into tissue paper production to enhance energy efficiency and decarbonization. Focusing on the energy-intensive drying process, the study uses data from...
Article
Redox Flow Batteries (RFBs) are a versatile and durable type of electrochemical storage and a promising option for large-scale stationary energy storage. Aqueous Organic Redox Flow Batteries (AORFBs) are an innovative category of RFBs that utilize organic species as active molecules in aqueous electrolytes. These species allow for customization of...
Chapter
Full-text available
The significant future penetration of variable renewable energy, necessary to decarbonize power production, will require energy storage to stabilize the electric grids. Electrochemical batteries may not be the best solution for all energy storage needs due to their limited lifetimes, performance degradation and use of critical raw materials. Pumped...
Article
Geothermal resources represent a valuable option to reduce fossil fuel-based power production because they feature an unmatched capacity factor among other Renewable Energy Sources (RES). Geothermal resource availability reduces with the temperature. Therefore, developing cost-effective solutions to exploit low-temperature geothermal energy is mand...
Conference Paper
Geothermal resources represent a valuable option to reduce fossil fuel-based power production because they feature an unmatched capacity factor among other Renewable Energy Sources (RES). Geothermal resource availability reduces with the temperature. Therefore, developing cost-effective solutions to exploit low-temperature geothermal energy is mand...
Conference Paper
The waste heat recovery from the gas turbine (GT) exhaust is typical for increasing performance and reducing CO2 emissions in industrial facilities. Nowadays, numerous already operating GT gas turbine plants could be retrofitted and upgraded with a bottoming cycle powered by the GT exhaust gasses. In this case, the standard solution would be to use...
Conference Paper
Liquefied natural gas is recently playing an important role in the heavy-duty vehicle and marine fuel market due to the low ambient impact, easy onboard storage, and low commercial prices. Biomethane from biogas upgrading can integrate the LNG market by providing the added value of an almost zero carbon footprint fuel. The production rate of biomet...
Article
The waste heat recovery from the gas turbine (GT) exhaust is typical for increasing performance and reducing CO2 emissions in industrial facilities. Nowadays, numerous already operating gas turbine plants could be retrofitted and upgraded with a bottoming cycle powered by the exhaust gasses. In this case, the standard solution would be to use a wat...
Article
Long-duration storage (i.e., 6 + h) could foster the power sector transitions towards renewable energy sources. Pumped thermal energy Storage (PTES) recently gained much attention. Thermally-Integrated PTES (TI-PTES) exploiting additional thermal energy sources to boost electric roundtrip efficiency are promising and can exploit low-temperature hea...
Article
Electrolytic hydrogen production using renewable sources can play a central role in global decarbonization. However, the direct coupling of electrolyzers with renewable energies can cause frequent shutdowns and high production fluctuations unless adopting electrical storage systems or using electricity from the grid that is generally not completely...
Article
Seawater desalination is an effective way to reduce water scarcity affecting many world areas. However, desalination processes require considerable power that might not be available in remote areas, especially in insular zones. Ocean Thermal Energy Conversion (OTEC) is a promising technology to be coupled with reverse osmosis (RO) in remote tropica...
Article
Full-text available
Hydrogen production through electrolysis from renewable sources is expected to play an important role to achieve the reduction targets of carbon dioxide emissions set for the next decades. Electrolysers can use the renewable energy surplus to produce green hydrogen and contribute to making the electrical grid more stable. Hydrogen can be used as me...
Article
Full-text available
Biomethane liquefaction may help decarbonization in heavy transportation and other hard-to-abate sectors. Small-scale liquefaction plants (<10 ton/day) are suitable for small biogas plants located near farms and other agricultural activities. “Internal refrigerant” refrigeration cycles (e.g., Kapitza cycle) are often proposed for small-scale natura...
Article
This study presents a proposed hybrid ship propulsion system combining an internal combustion engine and a molten carbonate fuel cell both powered by liquefied natural gas (LNG). Exhaust from the internal combustion engine is used as a CO2 source for cell operation, reducing CO2 emissions. Use of fuel stored at very low temperature requires heat fo...
Article
The increasing capacity of variable renewable energy sources fosters the importance of electric energy storage. This paper is focused on exploring Compressed Air Energy Storage (CAES) as a suitable solution for small-medium size stationary applications. A small-scale Adiabatic Compressed Air Energy Storage system with an artificial air vessel has b...
Article
Full-text available
The integration of electricity and gas systems is a key priority for the energy transition. Alongside electricity, low-carbon energy vectors, such as Liquified Natural Gas (LNG) or hydrogen, are required in future energy systems. Hence, regasification systems, often located nearby port areas, will be strategic assets promoting environmental, social...
Article
Full-text available
Waste heat recovery (WHR) systems through organic rankine cycles (ORCs) in anaerobic digestion plants may improve cogeneration efficiency. Cogeneration unit power output, flue gas temperature, and mass flow rate are not constant during the day, and the thermal load requested by digesters shows seasonal variations. For this reason, a proper design o...
Article
A novel trigeneration cycle with two-phase fluid devices (compressors and expanders) and a wet working fluid is proposed. The steady-state mathematical model of the cycle is developed and implemented in Matlab environment. The sensitivity analysis is performed by changing simultaneously five process parameters to determine the best operating condit...
Article
Full-text available
Aiming for the better environmental and economic performance of traditional engines, waste heat recovery (WHR) technologies are actively studied to find their most beneficial applications. In this work, the inverted Brayton cycle (IBC) is investigated as a potential WHR solution for liquefied natural gas (LNG) fuelled transport truck. LNG being one...
Article
Electrification of remote zones is often characterized by high energy costs as a result of the fossil fuels supply and cost associated to its logistic. This study performs a theoretical model and optimization of an ocean thermal energy conversion (OTEC) system coupled to an organic Rankine cycle (ORC) generator for small scale applications in the S...
Article
In the framework of a scenario with an always increasing share of generation from variable renewable sources, the need for systems able to store energy or to convert the excess generation into useful goods is becoming of paramount importance. While several projects and pilot plants deal with direct energy storage or with the conversion of the exces...
Article
Full-text available
This work is a techno-economic study of the combination of inverted Brayton cycle, and organic Rankine cycle (combined IBC-ORC) applied for high-temperature waste heat recovery (WHR) of the engine exhaust energy. In IBC, exhaust gases expand to subatmospheric pressure in the turbine, transmit heat residuals to ORC, and restore pressure to 1 atm in...
Article
Full-text available
In the last years, an increasing number of countries has been affected by water shortage. Seawater desalination driven by solar energy, which is usually available in arid regions, might be a solution to satisfy the freshwater demand. In this study, the feasibility of a stand-alone multi-effect desalination (MED) plant driven by solar energy for an...
Article
Biogas plants are an interesting solution for production of clean energy. Biogas produced in an anaerobic digester can be used locally to produce electric energy in an internal combustion engine or in a micro-gas turbine. A portion of the waste heat is used to keep the digester at a constant temperature which is a necessary condition for a correct...
Article
Many practical cases with waste heat recovery potential such as exhaust gases of reciprocating engines, cement kilns or heat-treating furnaces, are nowadays often integrated with organic Rankine cycle to convert waste heat to the mechanical power. However, when dealing with high-temperature waste heat, organic Rankine cycle faces efficiency limit d...
Article
Full-text available
Biogas is a fuel obtained from organic waste fermentation and can be an interesting solution for producing electric energy, heat and fuel. Recently, many European countries have incentivized the production of biomethane to be injected into natural gas grids or compressed and used as biofuel in vehicles. The introduction of an upgrading unit into an...
Article
The growing global demand for fresh water coupled to the increasing interest in renewable energies and waste heat recovery has resulted in flourishing attention to the multi-effect distillation process for seawater desalination. The low operating temperature makes this technology attractive in the case of low temperature heat sources such as geothe...
Article
An increasing interest is devoted to biogas plants as they might play a key role in the reduction of current fossil fuel consumption for power production. The main component of the plant is the anaerobic digester where the organic fraction of waste products is converted in a gas with high concentration of methane and carbon dioxide. This biogas is...
Article
The gradual reduction of subsidies for electricity production from biogas and the raising interest of bio-methane as an integration to natural gas market force the biogas plant owners to choose alternative solutions for biogas exploitation. In this study, two solutions for biomethane distribution have been compared: biomethane liquefaction and gri...
Article
Full-text available
A feasibility analysis, to assess the suitability of converting the biogas produced in an existing anaerobic digestion plant to bio-methane, was carried out. The case study plant was equipped with a micro-gas turbine co-generator. Several upgrading systems of different sizes were considered, to determine the most suitable configuration from a therm...
Article
Full-text available
Biomass, together with other renewable sources, is increasingly used to provide energy to minigrids and distributed generation systems. Particularly, biogas production seems an interesting solution as it can be used to produce electricity, heat and bio-methane (through an upgrading system). In addition, biogas can be relatively easily stored in gas...
Article
Full-text available
An increasing interest is devoted to biogas plants as they might play a key role in the reduction of current fossil fuel consumption for power production. The main component of the plant is the anaerobic digester where the organic fraction of waste products is converted in a gas with high concentration of methane and carbon dioxide. This biogas is...
Article
Full-text available
Recent regulatory initiatives regarding ships emissions raised the interest of maritime operators on cleaner fuels. The International Maritime Organization (IMO) with Annex VI of the International Convention for the Prevention of Pollution from Ships (MARPOL) set strict limits on SO x , NO x and CO 2 emissions. Many studies have been carried out to...
Article
Full-text available
Thanks to the high energy density and to the extended range it can ensure, LNG is an attractive energy vector especially in heavy-duty transportation. This fuel is even more interesting if produced starting from biogas because of the reduced carbon footprint. Biogas production occurs in anaerobic digestion plants and various production strategies c...
Article
The coupling of a small-scale Multi-Effect Distillation system for seawater desalination with a waste heat recovery Organic Rankine Cycle was studied. Two configurations were analysed: a hybrid serial-cascade and a cascade configuration. The heat source was a generic waste heat flow at at 200°C. Four sizes were considered for the Multi-Effect Disti...
Conference Paper
Lately, an increased attention has been dedicated to the study and development of suitable processes for small-scale bio liquefied natural gas (bio-LNG) production plants (from 5 to 500 tons of LNG per day) to improve the profitability of small gas fields and biogas plants with anaerobic digestion processes and landfills. In this paper, a technical...
Article
In this paper, a comparison of two different small bio-LNG plants for upgrading and liquefaction have been conducted. In the first configuration liquefaction of the biomethane occurred after the upgrading with conventional processes; in the second configuration, cryogenic upgrading occurred within the liquefaction process, removing CO2 in solid sta...
Article
Off-design characterization of energy systems has become interesting, especially for waste heat recovery 1 application, where the heat source temperature and mass flow rate can vary over time. Low-grade heat is 2 generally converted into power through ORC modules: the problem of the constant temperature evaporation 3 lead to the definition of alter...
Article
In this paper the dynamic behavior of a small low-concentration solar plant with static Compound Parabolic Collectors (CPC) and an ORC power unit with rotary volumetric expander has been analyzed. The plant has been simulated in transient conditions for a year-long operation and for three different sites respectively located in northern, central an...
Article
In this paper, the dynamic behavior of a WHR (Waste heat Recovery) ORC system with positive displacement rotary expander has been analyzed and an optimal control strategy was defined to increase the system efficiency and flexibility. Input heat flow was varied in time by varying the heat source mass flow and inlet temperature, according to two diff...
Article
Organic Flash Cycles (OFCs) can improve the overall efficiency of waste heat recovery or geothermal systems due to a better match of the hot and cold heat transfer curves. However, the lower mean temperature difference between the heat transfer curves implies larger exchanger areas and therefore higher heat exchanger costs. In order to reduce the e...
Article
Full-text available
The work presented in this paper deals with the experimental tests which were carried out on a prototype of a rotary volumetric expansion device based on the Wankel mechanism. This expansion device is addressed to small size power plants (in the range 5-50 kW) for distributed micro-generation using various sources of thermal energy, such as sun, bi...
Article
Full-text available
In this paper the modeling activity on a waste heat recovery microgeneration ORC plant is presented together with the results of the application of two different load diagrams and three different control strategies. The overall energy production and the average efficiency were compared and a proper control strategy was evaluated to optimize the ene...
Article
Full-text available
Biomass is a form of renewable energy that can be used to provide high energy outputs, to support and in same case replace conventional fossil fuel energy sources. In this work the potentialities for energy recovery of the waste biomasses derived from the agro industrial activities of the Tuscan region (Italy) are analyzed: in particular waste deri...
Article
Full-text available
The use of ORCs is growing in importance the last years, because this type of cycles permits to exploit energy sources which are characterized by low enthalpies (waste heat, low temperature geothermal, low concentration solar plants, etc.) and low installed power sizes (up to 50-100 kW). In this size range, volumetric machines are very attractive d...
Article
Full-text available
ORC plant transient modeling is an actual issue for the correct assessment of the size of the various components of the system especially when unpredictable fluctuations of the inlet thermal flux are to be considered. This work shows the modeling procedure of a small scale (10-50 kW) Waste Heat Recovery ORC plant which uses an innovative expansion...
Article
Full-text available
In the last decade many studies have been carried out on low temperature solar compound parabolic collectors (CPC) that are able to collect solar direct and diffuse radiation without the need of a tracking system, especially if coupled with small scale Organic Rankine Cycles for electricity and heat combined production. This paper presents a study...
Article
Single stage expansion devices are currently studied for small scale size power plant, often in combination with Organic Rankine Cycles for the employment of solar, geothermal, biomass or waste heat energies. A volumetric rotary single-stage expander was chosen in this study as expansion device for such type of plants. Its main characteristics and...

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