Manuel Carlos Gameiro da Silva- Mech Eng, MSc, Ph D, Agregation
- Full Professor at University of Coimbra
Manuel Carlos Gameiro da Silva
- Mech Eng, MSc, Ph D, Agregation
- Full Professor at University of Coimbra
Director of ADAI, Coordinator of the Energy for Sustainability Initiative of the Univ. of Coimbra,
About
305
Publications
176,204
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Introduction
Full Professor at Univ of Coimbra (Mech Engng)
.
Scholar of the MIT-Portugal Program
Invited Prof of the Master Course GBBV - ENTPE, University of Lyon
Coordinator of the Research Line in Sustainable Energy of LAETA.
Vice-President of Rehva (www.rehva.eu)
Coordinator of the Energy for Sustainability Initiative (EfS) of the University of Coimbra
Research Interests: Indoor Environmental Quality, Energy Efficiency, Instrumentation and Measurement
Counselor Member of Ordem dos Engenheiros
Current institution
Additional affiliations
March 2017 - present
February 2014 - July 2014
Position
- Visiting Professor (Associate)
Description
- Working at the Northern Cyprus Campus. Teaching about Experimental Methods. Performing Research about Indoor Environmental Quality and Energy Efficiency.
Publications
Publications (305)
Recently, several factors have contributed to an increase in interest in the evaluation of comfort experienced by passengers in vehicles. Due to rising mobility, the time that people spend in vehicles has grown substantially. The criteria applied by consumers have changed on account of generally heightened expectations, resulting in a growing deman...
This paper describes how a developed multiprobe measuring system is used for the assessment of Indoor Environmental Quality (IEQ) in buildings. The objective of the work has been to develop an intuitive, coherent and user-friendly system for either short term or long term IEQ audits. Apart from the presentation of the measured values in tables and...
The paper explains the Physics behind the three transmission modes of pathogenic elements transported in the air exhaled from an infected person. A Literature review about the papers that are conclusive about the role of the airborne transmission modes in viral infections is done. The paper concludes with suggestion and recommendation to reduce the...
With growing concerns about carbon emissions and the need for decarbonization, hydrogen is a promising hypothesis for the replacement of fossil fuels. Blending hydrogen with natural gas and using existing natural gas transmission networks is a strategy that could reduce carbon emissions. However, a significant challenge with using hydrogen in trans...
This study assesses indoor air quality (IAQ) in two schools in the Democratic Republic of Congo (DRC), contributing scientific data for a developing tropic such as the DRC marked by the absence of sufficient study on the indoor environmental quality (IEQ) in school buildings. Over ten weeks, we monitored IEQ parameters in two schools, considering t...
This systematic literature review (SLR) focuses on indoor environmental quality (IEQ) in passenger transport vehicles within tropical and subtropical regions. It specifically examines indoor air quality (IAQ), thermal comfort (TC), acoustic comfort (AC), and visual comfort (VC) of passenger vehicle cabins (PVCs) in auto rickshaws, sedans, trucks, b...
Ensuring sustainability and reducing energy consumption in the built environment is essential for achieving energy efficiency and comfort. To obtain a healthy and sustainable urban environment, indoor air quality and ventilation play a crucial role inside buildings since billions of people live in urban environments worldwide and spend significant...
This paper presents the optimization of a novel air-sealed visor for medical care using computational fluid dynamics (CFD). The personal protective equipment (PPE) provides aerodynamic sealing of the breathing zone, thereby reducing the risk of inhaling droplets and aerosols carrying viruses. To ensure a uniform and stable air-curtain, the air supp...
Title: Indoor Environmental Quality Gaps and the Risk to Public and Environmental Health in Developing Tropical African Context. Since the recent COVID-19 pandemic, the subject of exposure science and indoor environmental quality (IEQ) underscores the need to ensure minimal risk to public and ecological health. Globalization and urbanization have c...
This study critically examines the impact of indoor air quality (IAQ) on occupant health in two critical care units (ICUs) at Jason Sendwe Hospital (JSH) and General Carrier de Mine Hospital (GCMH) within the Southern DRC metropolitan area, focusing on their impact on occupant health and well-being. Utilizing a mixed methods approach that includes...
Indoor environmental quality (IEQ) has become a critical factor to consider regarding the safety and comfort of indoor spaces since modern man spends a significant amount of time indoors. Additionally, with the prevailing effects of climate change and the assured impact of the ambient outdoor environment on indoor climate conditions, there is a nee...
School buildings remain important indoor spaces where the typical occupants spend a significant amount of time. Thus, adequate indoor environmental quality (IEQ) is necessary for a safe environment and assures minimal risk to occupants' health, well-being, performance, and productivity. This study was performed within the framework of the 3SqAir re...
Assessing indoor environmental quality (IEQ) is fundamental to ensuring health, well-being, and safety. A particular type of indoor compartment, land transport cabins (LTCs), specifically those of trains and buses, was surveyed. The global rise in commute and in-cabin exposure time gives relevance to the current study. This study discusses indoor c...
![Machine learning tree [13,14,15].](publication/380146480/figure/fig1/AS:11431281389588747@1745224127125/Machine-learning-tree-13-14-15_Q320.jpg)
![Current AI application areas in buildings [30].](publication/380146480/figure/fig2/AS:11431281389598255@1745224127937/Current-AI-application-areas-in-buildings-30_Q320.jpg)
Global warming, climate change and the energy crisis are trending topics around the world, especially within the energy sector. The rising cost of energy, greenhouse gas (GHG) emissions and global temperatures stem from the over-reliance on fossil fuel as the major energy resource. These challenges have highlighted the need for alternative energy r...
An interactive computational tool based upon the differential equation modeling the time evolutions of the concentrations of both CO2 and a bio contaminant in an indoor uni-zone compartment was developed to support teaching and training activities during the COVID-19 pandemic. It uses the finite differences formulation, calculating the concentratio...
An interactive computational tool based on the differential equation modelling the time evolution of the concentrations of both CO2 and a bio-contaminant in an indoor uni-zone compartment was developed to support teaching and training activities during the COVID-19 pandemic. It uses the finite differences formulation, calculating the concentration...
The pressure on forests is one of the main purposes of the environment depletion. Nevertheless, most research suggests solutions to limit the unsustainable woodland management. In mountainous cold climates, occupants usually use wood-burning heaters to assure thermal comfort in residential buildings. The use of this type of heater can directly affe...
Notwithstanding the reductions in the cost of renewable energy per unit produced, cost objectives remain a relevant yet understudied topic due to their ability to indicate information available in the market. To better understand the general practice and identify trends in cost objectives for renewable energy-powered buildings in multi-objective op...
This paper presents the experimental acoustic assessment and optimization of a novel solid visor with aerodynamic sealing for medical care. This Personal Protective Equipment (PPE) ensures an effective aerodynamic sealing of the breathing zone thus reducing the risk of inhaling droplets and aerosols carrying a potential infectious agent. The PPE re...
![Map excerpt showing study area and railway route [43] and photos of the...](publication/376227829/figure/fig1/AS:11431281390694476@1745281650466/Map-excerpt-showing-study-area-and-railway-route-43-and-photos-of-the-field-survey_Q320.jpg)
The adequacy of the indoor environmental quality (IEQ) in mass transit microenvironments is crucial to the well-being of exposed commuters. By 2050, many developing tropical countries will host even more megacities, which will feature an increase in people mobility and higher occupancy density. The paucity of IEQ studies, the technology gap, and in...
Morocco is currently launching a sustainable transition to advance the
built environment and its systems. This transition concerns multiple fields such as
urban planning and construction. Indeed, a thermal regulation was established to
regulate and minimize building sector energy consumption and to predict the projections
for future urban consumpti...
The global interest in nearly zero-energy buildings (NZEBs) has led to their establishment as mandatory building objectives in Europe for all new constructions starting in 2021. The principles outlined in the Energy Performance of Building Directive (EPBD) emphasize the significance of reducing energy demand through various energy efficiency measur...
The integration of renewable energy and flexible energy sources in buildings brings numerous benefits. However, the integration of new technologies has increased the complexity and despite the progress of optimization algorithms and technologies, new research challenges emerge. With the increasing availability of data and advanced modeling tools, s...
![Uncertainty handling approaches. Source: based on [5,7]. Notes: this...](publication/371878050/figure/fig1/AS:11431281398073296@1745521877737/Uncertainty-handling-approaches-Source-based-on-5-7-Notes-this-partitioning-of_Q320.jpg)
This paper systematically reviews the techniques and dynamics to study uncertainty modelling in the electric grids considering electric vehicles with vehicle-to-grid integration. Uncertainty types and the most frequent uncertainty modelling approaches for electric vehicles are outlined. The modelling approaches discussed in this paper are Monte Car...
Low-emissivity (low-E) window films are designed to improve the performance of buildings. These films can be applied to different glazing systems without replacing the whole window. For most of the existing windows, it is not possible to apply these films on the surfaces inside the cavity. Placing them on the outer surface is not usually recommende...
One of the most important properties of a glazing system is the solar heat gain coefficient (SHGC, or g-value) which quantifies the passive solar thermal gains. There are several standardized numerical methods of determining a window's g-value. However, the methods do not consider the glazing systems in real boundary conditions, and usually are sub...
This paper presents the performance assessment of a novel air-sealed visor for medical care based on experiments. This Personal Protective Equipment (PPE) provides effective aerodynamic sealing of the breathing zone, thus reducing the risk of inhaling droplets and aerosols carrying a potential viral load. The air curtain supply system was designed...
Nearly-zero energy buildings are standard for new constructions in the European Union. The challenge for decarbonized cities is retrofitting the existing buildings. Retrofitting the existing buildings provides considerable opportunities for improving occupants’ comfort and reducing global energy consumption and greenhouse gas emissions. Building re...
An indoor climate impacts human comfort, well-being, and safety. Therefore, it remains an important topic since, nowadays, people spend a significant amount of time indoors. Additionally, as tropical geographical zones become more populated, urbanised, and industrialised, the energy demand for air conditioning will rise significantly. In terms of t...
One of the most important parameters that indicate the energy performance of a window system is the thermal transmittance (U-value). Many research studies that deal with numerical methods of determining a window’s U-value have been carried out. However, the possible assumptions and simplifications associated with numerical methods and simulation to...
High noise levels in hospitals can affect patients’ well-being, staff productivity, and medical error rates. This study measured noise in two intensive care units (ICUs) in the Democratic Republic of Congo (DRC). An occupant’s survey and a continuous field sampling were conducted in May and June 2021 in each ICU, using a T Tocas SL 1361 digital sou...
Indoor Climate Quality is the way to assess how much thermal and indoor air quality conditions might influence people’s comfort indoors. Passengers traveling on commercial airplanes are increasingly demanding comfort inside the cabin. So, creating a comfortable environment is a relevant requirement to be considered. Although indoor climate standard...
Oral presentation: "3SqAir - Sustainable Smart Strategy for Air Quality Assurance in Classrooms. - PREMISES AND DEVELOPMENTS" at the "3SqAir Workshop” held at the Department of Mechanical Engineering of the Faculty of Sciences and Technology of the University of Coimbra, 8-9 November 2022.
SARS-CoV-2 transmission occurs mainly indoors, through virus-laden airborne particles. Although the presence and infectivity of SARS-CoV-2 in aerosol are now acknowledged, the underlying circumstances for its occurrence are still under investigation. The contamination of domiciliary environments during the isolation of SARS-CoV-2-infected patients...
Lecture notes about Indoor Air Quality of the Course in Indoor Environmental Quality at the University of Coimbra
The fast-spreading of the SARS-CoV-2 virus led to a significant increase in the demand for personal protective equipment (PPE). Healthcare professionals, mainly dentists, work near the patients, increasing their risk of infection. This paper investigates the effectiveness of an air-curtain sealing effect in a newly designed visor developed to reduc...
Background: Cooling vests are popular and widely used in many sports. There are several studies about their efficacy but there is not much evidence about their impact on the recovery of kayak sprint male athletes. Methods: Ten elite male sprint kayakers completed an exercise protocol on a kayak ergometer on two separate days. They were randomized t...
Indoor environmental quality (IEQ) remains a global concern because it impacts people's comfort, health, performance, and general well-being. People spend a significant amount of time in buildings or while commuting, hence ensuring the minimal risk in indoor spaces by ensuring suitable IEQ. IEQ studies are limited regarding developing sub-Saharan c...
Retrofitting of existing buildings offers significant opportunities for improving occupants’ comfort and well-being, reducing global energy consumption and greenhouse gas emissions. This is being considered as one of the main approaches to achieve sustainability in the built environment at relatively low cost and high uptake rates. Although a wide...
The present study is the result of a global study conducted by the students of the Master Program "Green Building Engineering and Energy Efficiency" at the School of Architecture Design and Planning (SAP+D) of Mohammed VI Polytechnic University (UM6P) in Benguerir, Morocco. The study is a hands-on experience that allows the master's students to lea...
In the context of the Covid-19 pandemic (officially declared by the WHO on March 11th, 2020), indoor air quality (IAQ) has resurged as a renewed paradigm, demanding enhanced attention, especially in spaces with high occupancy density, as is the case of school buildings. To minimize the risk of contamination indoors, it is needed to assure low conce...
The thermal human sensation index Predicted Mean Vote (PMV) has been largely adopted by researchers. The calculation procedure of PMV listed in ISO 7730 is included in most common dynamic simulation tools of buildings and air-conditioning systems. Its application is limited for buildings at or close to the sea level. A calculation procedure of a th...
Purpose
The changes brought by Industry 4.0 go beyond transformations in the industrial environment. The increasingly frequent digitization and robotization of activities is not only restricted to the industrial environment, but also to people's daily routine. People spend a large part of their time inside buildings, and maintaining adequate Indoor...
A qualidade do ar interior (QAI) e a ventilação são te-mas sobre os quais nos habituámos a ouvir falar com muito mais frequência nos últimos tempos, devido à pandemia de COVID-19. Tendo em conta que o contágio se verifica sobretudo pela emissão de vírus por uma pessoa infeta-da através da exalação e à sua posterior inalação por um recetor suscetíve...
Low-emissivity (low-E) window films are designed to improve the thermal comfort and energy performance of buildings. These films can be applied to different glazing systems without having to change the whole window. This makes it possible to apply films to windows in old and historical buildings for which preservation regulations often require that...
Video presentation of the paper "EC2U: A EDUCAÇÃO PARA A SUSTENTABILIDADE COMO RESPOSTA AO OBJETIVO 11 DE DESENVOLVIMENTO SUSTENTÁVEL – CIDADES E COMUNIDADES SUSTENTÁVEIS" at the "3.ª Conferência Campus Sustentável (CCS2021) - October 28th 2021".
Producer: Ana Rita Amaral.
Presenter: Ana Rita Amaral.
The thermal environment index Predicted Mean Vote is a descriptor largely applied to evaluate the comfort sensation of people in moderate environments. Software tools based on the Fanger's method have been created and used, which application is limited for the sea level atmospheric pressure. A procedure for estimating the index of thermal comfort o...
Background
There has been a notable increase in knowledge production on air pollution and human health.
Objective
To analyze the state of the art on the effects of air pollution on human health through a mapping review of existing systematic reviews and meta-analyses (SRs and MAs).
Methods
The systematic mapping review was based on the recommenda...
Recent years have seen an increasing need to invest in smart, energy-efficient technologies in buildings to improve health and convenience for occupants and to reduce energy consumption and carbon emission impacts. Digitalization and developments in the information and communication technology sector play a critical role in improving the efficiency...
Several software tools have been created to calculate the indices Predicted Mean Vote (PMV) and Predicted Percentage of Dissatisfied (PPD) by following Fanger’s method, which is valid only for atmospheric pressures close to 1 atm.
The main objective of this work is to propose a formulation named PMV-PS for predicting an atmospheric pressure-sensiti...
The Predicted Mean Vote (PMV) and Predicted Percentage of Dissatisfied (PPD) are the most used indices for the assessment of thermal conditions in indoor environments. However, many times, the uncertainties associated with the calculation of both indices are not reported, may be because direct methods are not easily applicable to calculate it. The...
Projeto de Inovação Pedagógica premiado no concurso Prémios Santander-UC de Inovação Pedagógica
Resumo do Projeto
Atualmente os telemóveis incorporam sensores (por exemplo, acelerómetro triaxial, microfone, sensor de iluminância, sensor de GPS, sensor de campo magnético, etc.) que, através da utilização de um conjunto variado de aplicações informá...
Neste artigo, vou explicar a minha visão sobre vários aspetos relacionados com a crise pandémica da Covid-19 e o seu relacionamento com a área em que desenvolvo a minha atividade de investigação científica: a Qualidade Ambiental Interior. Uma vez que desconfiava que seria complicado, para a maior parte das pessoas, entender as razões pelas quais um...
Introducción Las dudas planteadas por el autor respecto a la importancia que las autoridades sanitarias, tanto a nivel nacional como internacional, atribuyen al papel que desempeñan los diferentes modos de transmisión en la propagación de infecciones virales y las consecuencias derivadas de dicha dinámica fueron la motivación principal por escribir...
This webinar explored with top experts key notions about indoor environments (Indoor Environmental Quality, IEQ), how building services can help prevention and mitigation today and furthermore enable and facilitate the lockdown reversal, and how to best let go of our old habits and create new long-lasting ones good especially during times of crisis...
This webinar explored with top experts key notions about indoor environments (Indoor Environmental Quality, IEQ), how building services can help prevention and mitigation today and furthermore enable and facilitate the lockdown reversal, and how to best let go of our old habits and create new long-lasting ones good especially during times of crisis...
The Physics behind the 3 transmission modes of COVID-19 related to the exhalation of an infected is explained, in the light of Indoor Air Quality concepts. The connection between the sizes of droplets, the transmission modes (airborne, droplets and contact) and the protective measures is established. A Literature review dealing with conclusive work...
The world is facing a pandemic of unseen proportions caused by a corona virus named SARS-CoV-2 with unprecedent worldwide measures being taken to tackle its contagion. Person-to-person transmission is accepted but WHO only considers aerosol transmission when procedures or support treatments that produce aerosol are performed. However, transmission...
The current perspective on transport sector presents a major challenge provided by the absolute need to reduce CO2 emissions. This allows to mitigate global warming, reduce air pollution and minimize this sector's dependence on oil. For more than a century the focus was on internal combustion engine usage, whether it might be a spark ignition or co...
Building sector is responsible for a large proportion of global energy consumption. Among all building services, Heating, Ventilation and Air Conditioning (HVAC) systems are significantly in charge for building energy use. In HVAC, ventilation is the key issue for providing suitable Indoor Air Quality (IAQ), while it is also responsible for energy...
Buildings are the main sector in accomplishment of the EU energy and climate targets as well as the long-term sustainability goals by 2050 as they consume 40% of EU's final energy (read: the largest single energy consumer in Europe). Therefore, EU policies and strategies aim to not only improve the efficient use of energy in existing buildings and...
Indoor environmental quality (IEQ) and energy conservation in schools are complex challenges. A significant part of the energy demand in these buildings addresses ventilation and temperature indoors. When confronted with money/energy constraints, the tendency of school boards is to cut on IEQ requirements, compromising the comfort of the occupants...
Due to production requirements, solar facilities are usually located in sunny environments where workers face hot weather. Heat is seen as an environmental and occupational hazard with its physiological effects due to high-temperature exposures. Among the heat-related effects are, dehydration, heat exhaustion, heat stroke, and death. The heat-relat...
The correct preservation of old and rare books in libraries needs suitable values of temperature and relative humidity. This paper shows the hygrothermal data acquired in a historic library, the Baroque Library, of the University of Coimbra, Portugal, where several old and rare books are stored. The data were acquired during a 6-month monitoring ca...
The study presents a new procedure for identifying possible risks for books kept in historic libraries. It is addressed to all those historic libraries where large collections of old and rare books are stored and preserved. These libraries were rarely used by people, but, nowadays, many of them have become touristic attractions. Consequently, their...
This case study describes the results of the ongoing Ph.D thesis on “Upgrade Opportunities for Ancient Buildings" that aims to demonstrate innovative ways to reach “nearly Zero Energy Buildings” levels by reinterpreting the traditional knowledge concerning historic buildings. The case study focuses on synergies that can be usefully employed when th...
Nowadays, due to the importance that aspects related to energy efficiency and indoor environmental quality have assumed, the need to carry out audits in which the thermal comfort indices are assessed has grown substantially. A particularly relevant issue is the quality of the experimental results, which is directly connected to the uncertainty of t...
An Indoor Environmental Quality monitoring system developed to be installed in a medium
size office building is presented. The architecture of the system, comprising two measuring
stations and the building management unit is described, being also addressed the two
software tools developed to handle, display, process and analyze the data. Finally...
Nowadays, due to the importance that aspects related to energy efficiency and indoor environmental quality have assumed, the need to carry out audits in which the thermal comfort indices are assessed has grown substantially. An issue particularly relevant is the quality of the obtained results, which is directly connected to the uncertainty of the...
Among the Concentrated Solar Power technologies, central receiver systems (CRS) is the technology moving to the forefront in market penetration. CRS requires the use of heliostats oriented toward the central receiver in order to concentrate solar radiation. The excess of light due to the reflection of the sunlight on the heliostats' surface and the...
Pressure anemometers suitable for fabrication by 3D printing employing fused deposition modeling (FDM) technology were designed, built, and tested in a wind tunnel, the work being initiated by attempting to create a particular type of this class of instruments, commonly known as a Pitot tube. After initial issues due to the porosity of the parts, a...
p class="0abstract">The development of a tool to analyse data collected in car road tests is presented, allowing a better understanding of the Physics of car motion. Using the measured data of fuel consumption and the main variables related to the vehicle displacement, it is possible to make corrections to the influence of the main disturbing facto...
The need for objectivation of the indoor environmental quality (IEQ) increases since building project procurement practices, like Design and Build, etc, lay the entire burden of responsibilities for the specification and realisation of IE performances with competing market parties. But where does the client, let us assume the building owner, stand...
The need for objectivation of the indoor environmental quality (IEQ) increases since building project procurement practices, like Design and Build etc, lay the entire burden of responsibilities for the specification and realisation of IE performances with competing market parties. Post completion complaint management only, with or without the help...
A significant amount of energy is being used by ventilation and air conditioning systems to maintain the indoor environmental condition in a satisfactory and comfortable level. Many buildings, either new or existing (throughout their renovation process) are subjected to energy efficiency requirements but these must not be in the expenses of indoor...
Buildings are responsible for a large sharing of energy consumption worldwide. Among all energy services in buildings, heating, ventilation and air conditioning systems not only account for a significant part of energy consumption but they are also highly influential on indoor climate and occupants’ satisfaction in consequence. In this paper, four...
On account of the scarcity of fossil fuels and the environmental problems arising from its use and exploitation, countries are opting for developing technologies based on renewable sources as alternatives to achieve the growing energy demand. Among the renewable energy technologies, solar energy seems to be an attractive solution. Usually solar pow...
A project for the creation and implementation of a distance-learning course on Indoor Environmental Comfort in Buildings (IECB) is presented. This course resulted from a request by Ordem dos Engenheiros (Portuguese engineering professional body) to the University of Coimbra. It was based on the Indoor Environmental Quality (IEQ) course of the Maste...
Questions
Questions (2)
Does anybody know about reported evidences of COVID-19 contamination through the airborne transmission mode, besides the two papers about the Guangzhou restaurant?
It is important that the reported cases have some information about the type of activity, the number of people in the room, the air exchange rate and the type of HVAC system
While in the contact and droplets transmission mode the infection starts at the nasal and oral cavities with some days of incubation before the lungs infection appears, in the case of airborne transmission mode the particles may have a size allowing them to penetrate directly till the alveoli. If it happens this way, may be a different type of evolution may occur.
