Special Issue "Modelling of Thermal and Energy Systems"
Deadline for manuscript submissions: 20 August 2020.
Interests: internal combustion engines; two-phase flow; heat exchangers design; evaporation & condensation processes; efficiency use of energy; thermal & PV solar energy; water desalinization
At present, in the Industry 4.0 era, it is possible to respond to the behavior of several real systems with a very good adjustment. Modelling tools are present in the majority of engineering disciplines, including energy, manufacturing, reliability, business, etc. However, it is interesting to define Modelling properly, to separate from and not confuse Modelling with simulation.
A correct model solves the physical equations representing the real phenomena that are going to take place in a real system. The fidelity of the model will be strongly determined by the correct physical laws included in the model, the simplifying assumptions, and subjected validation process for the model. A model is able to obtain parameters from different integrated parts of a complex system. In addition, a model is a powerful tool to optimize and to predict a real system.
Meanwhile, a simulation is the statistical response of a system; therefore, the reliability of a simulation is based on the amount of disposable data for the simulated system. In fact, Big Data techniques simulate a known system, but they are not able to get a response from new systems.
Utilizing Modelling tools, we are able to accurately predict the energy flows, power requirements, energy consumption, temperature, humidity, pressure, etc. for several components and their interconnections to develop complex Modelling systems. It is possible to evaluate the impact of a specific measure on a component (i.e., a partial optimization, changes of an environmental/internal parameter, etc.) and to obtain the impact of the whole system. Furthermore, the combination of Modelling and experimentation is the best strategy for the analysis, acquisition of knowledge, optimization, and control of a thermal or energy system.
This Special Issue focuses on the analysis, design, validation, response, and implementation of Modelling of Thermal and Energy Systems. The topics of interest for the Special Issue include (but are not limited to):
- Modelling of thermal systems;
- Modelling of complex energy systems;
- Thermal correlations Modelling;
- Two-phase flow Modelling;
- Heat exchangers Modelling and design.;
- Modelling of internal combustion engines;
- Reliability and failure detection Modelling;
- Air conditioning and refrigerant systems;
- Computational fluid dynamics (CFD) for thermal and energy systems;
- Modelling of thermal processes (evaporation and condensation);
- Modelling of energy flows.;
- Optimization and efficiency use of energy systems;
- Renewable energy models, thermal and PV solar energy, wind, biomass, biofuels, etc.;
- Modelling of the desalinization process;
- Thermal energy storage Modelling;
- Modelling of building energy consumption, isolation of buildings, etc.
Prof. Dr. Francisco Vera García
Manuscript Submission Information
Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.
Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Energies is an international peer-reviewed open access semimonthly journal published by MDPI.
Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1800 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.
- Thermal systems
- Energy systems
- Thermal correlations
- Heat exchangers
- Internal combustion engines
- Failure detection
- Air conditioning systems
- Refrigerant systems
- Computational fluid dynamics (CFD)
- Energy flows
- Optimization of energy systems
- Renewable energies
- Desalinization process
- Thermal energy storage
- Building energy consumption
The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.
Title: Development of a variable valve actuation control to improve engine efficiency and emissions in a light duty diesel engine
Authors: Serrano, J.R.; Arnau, F.J.; Martín, J.; Auñón, A.
Affiliation: Universitat Politècnica de València. CMT-Motores Térmicos
Abstract: Due to the need to fulfill the pollutant emission regulations, a growing interest has arisen to adopt Variable Valve Actuation (VVA) technology for automotive engines. Several VVA strategies, such as the exhaust re-opening and the late exhaust closing, can be used to achieve an increment in the after-treatment upstream temperature by increasing the residual gas amount.
In this study, a one-dimensional gas dynamics engine model has been used to simulate several VVA strategies and develop a control system to actuate over the valves timing to increase the engine efficiency and reduce the exhaust pollutant emissions.
Title: Passive heating and cooling of photovoltaic greenhouses including thermochromic materials
Authors: Javier Padilla1, Carlos Toledo2,3, Rodolfo López3, Raquel Montoya1, José-Ramón Navarro1, José Abad1 and Antonio Urbina3
Affiliation: 1 Department of Applied Physics, Technical University of Cartagena, Plaza Hospital 1, 30202, Cartagena. Spain. 2 ENEA Centro Ricerche Portici, Energy Technologies Department, Photovoltaics and Smart Devices Division, Innovative Devices Lab, largo Enrico Fermi 1, 80055 Portici (NA), Italy. 3 Department of Electronics, Technical University of Cartagena, Plaza Hospital 1, 30202, Cartagena. Spain.
Abstract: The light transmittance and thermal characteristics of envelope materials are crucial to control or modify the inside temperature and light spectrum of a living/working/cultivation space. In particular, photovoltaic modules are now broadly used as structural components of greenhouses for agronomical applications. In this study an analytical thermal model has been used to fit experimental temperature data measured during two years on four structures built with photovoltaic modules of four different technologies (mono-crystalline Si, amorphous Si, CdTe and an organic technology); additionally data have also been collected in structures in which the thermal effect of colour tuning has been quantified on several common construction materials (glass, wood, concrete on brick and plasterboard). In all cases, temperature differences of several degrees between external and internal ambient have been observed, paving the way to use passive cooling and heating methods to control the temperature and light spectrum of the greenhouses by simply modifying the colour of the structural components, including the photovoltaic modules, its level of solar cell coverage and its light absorption properties.