Tomás Gómez-Navarro

Polytechnic University of Valencia | UPV · Institute for Energy Engineering (IIE)

(50 days' free access to the article, until June 23, 2021: https://authors.elsevier.com/c/1d0Q33QJ-dho-E) Off grid electrification is key to achieving universal electricity access. Despite the potential of biomass gasifiers as a clean technology to ensure reliable systems, they are not as well looked upon as their advantages suggest. In particular,...

Cities are expected to be protagonists of the energy transition and, among other challenges, the decarbonation of the residential consumption could greatly benefit from photovoltaic generation in the built environment. To assess its potential, the present study analyses the possibility to cover the electric demand of the city of Valencia with rooft...

Measuring Fuel Poverty is a requirement for the correct sizing and the better understanding of the problem. Valencia's city council (Spain) commissioned a study based on primary data, i.e. direct interviews to the inhabitants. The survey reached 595 valid answers and gave an accurate quantification of fuel poverty in the city. For a more complete a...

Abstract This paper presents an assessment of the obstacles to the development of non-conventional renewable energy sources in Colombia. In the study, eleven barriers were included in three clusters: technical, social and economic. These barriers obstruct renewable energy sources from contributing to the electricity market in Colombia, mainly in it...

Eighty per cent of the people without access to electricity live in rural areas. Due to high investment costs in the grid, the solution to providing electricity to these people will mainly rely on the installation of islanded hybrid microgrids. Designers need to consider a variety of factors for the optimal design of hybrid microgrids. However, man...

Background In the context of urban energy transition, photovoltaic (PV) systems play an important role in electricity generation. However, PV technology has some environmental drawbacks that also need to be acknowledged and managed. Life cycle assessment (LCA) is widely used to assess the environmental impacts of systems, but LCA is very complex to...

Identifying districts’ potential to become Positive Energy Districts (PED) is challenging but strategic since they are considered critical enablers for cities’ carbon neutrality. PEDs are city areas with a positive annual energy balance, achieved primarily through energy efficiency and renewable energy generation while ensuring sufficient energy fl...

The present research is based on the calculation of the ecotourism carrying capacity of the trails and tourist sites of the Cotopaxi National Park (PNC), according to an established methodology, for which a variety of thematic maps were considered. These were used to calculate the real carrying capacity, which together with the management capacity...

Complex, non-linear systems with diverse consumption, generation, and storage technologies require advanced energy management by considering several factors: resource availability, energy efficiency, economic viability, consumption costs, and installation feasibility. To address these challenges, this paper integrates artificial intelligence into a...

This article proposes a methodology for the design of off-grid electricity systems based on renewable energies in rural of developing countries communities that never consumed electricity. The state of the art is reviewed and the methodology aggregates proposals from multiple previous works. It is divided into phases: Data Collection, Assessment, P...

Hundreds of cities worldwide have committed to decarbonizing or becoming carbon neutral by 2030, 2050, or even sooner. The challenge is particularly acute for the dense, compact cities of the European Mediterranean basin. To maximize their energy self-sufficiency, Mediterranean cities seek to scale up PV production within their boundaries and suppl...

In this research work, the Stanford Energy System Innovations action plan is adapted to the decarbonization of the Universitat Politècnica de València, of the Mediterranean coast of Spain. Special focus is dedicated to waste heat recovery from a data centre located on campus with an almost constant cooling demand throughout the year, amounting to a...

Climate change will affect people's health, especially in cities. Hence, energy planning will play a key role in the development of sustainable and resilient cities. Urban building energy models facilitate energy planning as heating and cooling demand becomes known, and the consequences of different planning actions can be modelled. This research p...

Local energy communities require tools to select their most fitting community members, power-sharing strategy and technologies for their goals. This work aims to develop a model and a methodology to optimise local energy communities. We evaluate the presence of a battery energy storage system with different capacities and ownership options. Besides...

The intermittent nature of the renewable energy sources with the greater potential, wind and solar, requires dealing with temporary mismatches between demand and supply. The object of this study is to assess the Spanish energy plan from a system perspective regarding the energy storage requirements to meet electricity demand with high penetrations...

Reducing the carbon emissions of buildings and whole districts is one of the main objectives of sustainable development goals. Both policymakers and end-users need reliable information to take actions that lead to achieving those goals. For this, an innovative open access planning tool has been developed to assess the effect of energy consumption o...

The transport sector is answerable for around a quarter of the global CO2 emissions sent into the atmosphere, and 50% of the greenhouse gases in the cities. Considering a staggered introduction of renewable sources in the electricity mix, the introduction of electric vehicles (EVs) in the urban transport network arises as a necessary environmental...

Energy poverty remains today one of the most important problems for a truly just urban energy transition. In addition, older people living alone are one of the main target groups of this problem. In this research, 525 households have been monitored of which 155 were potentially in fuel poverty in the city of Valencia, Spain. In the latter, the pres...

Renewable energy sources such as PV solar or wind power are intermittent and non-dispatchable. Massive integration of these resources into the electric mix poses some challenges to meeting power generation with demand. Hence, improving power generation forecasting has raised much interest. This work assesses the market value of enhanced PV solar po...

En 2015, las Naciones Unidas aprobaron la Agenda 2030 sobre desarrollo sostenible, que cuenta con 17 Objetivos de Desarrollo Sostenible (ODS) en muy diversos ámbitos. Dentro de este contexto, las Universidades deberían incorporar los ODS en todos los ámbitos de su actividad, ya que éstas juegan un papel primordial como agentes transformadores de la...

Spain and Europe are currently developing regulations and incentives for distributed generation, participation in the electricity market and the definition of social energy subjects. All this with the aim of empowering citizens and their social welfare. Examples are RD 15/2018 and RD 23/2020 in Spain and Directives 2018/2011 and 2019/944 in the EU,...

A study of energy supply alternatives was carried out based on a cogeneration fuel cell system fed from the natural gas network of compact Mediterranean cities. As a case study it was applied to the residential energy demands of the L'Illa Perduda neighbourhood, located in the east of the city of Valencia and consisting of 4194 residential cells. I...

Cities consume two-thirds of the energy supply, and 70% of carbon dioxide equivalent emissions come from urban environments. Positive Energy Districts are innovative tools to achieve energy and climate neutrality in cities. Positive Energy Districts are regions or neighbourhoods with a positive annual energy balance, obtained mainly through energy...

The paradigm proposed by Responsible Research and Innovation in the European Commission policy discourse identifies Public Engagement as a key area for exchange and dialogue among multiple actors following an inclusive and participatory process. Two definite set of indicators have already arisen at European level to monitor Public Engagement activi...

Costs of photovoltaic systems have fallen over the last decade, while the energy prices have risen. As a result, PV system is being proposed as a cost-effective option for power generation in the built environment. However, some authors consider that better regulatory support is still needed to deploy the PV potential in cities. In this research, f...

Renewable energy sources such as PV solar or wind power are intermittent and nondispatchable. Massive integration of these resources into the electric mix poses some challenges to meeting power generation with demand. Hence, improving power generation forecasting has raised much interest. This work assesses the market value of enhanced PV solar pow...

Los Distritos de Energía Positiva (DEP) se consideran herramientas innovadoras para alcanzar la neutralidad energética y climática en las ciudades. Los DEP son regiones o barrios con un balance energético anual positivo, conseguido principalmente mediante la eficiencia energética y la generación de energía a partir de renovables. Dada su novedad y...

Cities consume two-thirds of the energy supply, and 70% of CO2 emissions come from urban environments. Positive Energy Districts (PEDs) are seen as innovative tools to reach energy and climate neutrality in cities. PEDs are regions or neighbourhoods with a positive annual energy balance, achieved mainly through energy efficiency and energy generati...

The importance of cities towards energy transition and sustainability objectives is nowadays widely known. To overcome this challenge, city stakeholders must develop mitigation and adaptation measures. Cities and urban planning are complex systems. Thus, several guidelines to support cities in this transformation are available in the existing liter...

El bienestar de las personas que habitan una vivienda, vincula la EECN a la innovación social y urbana. No solo porque así lo manifiesta la legislación en desarrollo europea y estatal, con referencias a la Agenda 2030 y varios de sus ODS (Objetivos de Desarrollo Sostenible). Esta comunicación tiene como objetivo explicar como a partir de un proyect...

The building sector in the European Union (EU) is currently responsible of the 40% energy consumption and 36% of the CO2 equivalent emissions. That is why the European Union introduced the concept of Near Zero Energy Building (NZEB), with the objective of reducing the energy consumption associated to the building technical services, while including...

Energy planning plays a key role in the development of sustainable and resilient cities. One of the main parts of this analysis is the assessment of the building energy demand, especially the heating and cooling necessities. The objective of this work is to analyse the heating and cooling demand of a Mediterranean district (València, Spain) and to...

Reducing the carbon emissions of buildings and whole districts is one of the main objectives of sustainable development. Both policymakers and end-users need reliable information to take actions that lead to positive outcomes. The framework of a tool has been developed to assess the effect that the sources of energy consumption have on the overall...

Off-grid renewable energy grids will contribute to the achievement of SDG 7 on universal energy access, especially in off-grid communities. But the scarcity of resources for development aid requires very tight designs that minimize the cost of investment and operation of the mini-grid. To do this, the future energy demand of the community must be a...

The European Union advocates for legislative support to local energy communities. Measures include the promotion of dynamic energy allocation and discriminatory electricity tariffs such as the recent Spanish framework. However, the impact of these normative changes is not yet evaluated. This paper inquires into the impact of dynamic allocation coef...

FAO’s Strategy on Climate Change recognizes that actions on climate change are key to eradicate hunger, food insecurity and malnutrition as well as promoting rural development and improved sustainable agriculture, forestry and fisheries. In order to achieve the Sustainable Development Goals (SDGs) of the 2030 Agenda and FAO Strategic Objectives (SO...

En este artículo presentamos una estrategia para resolver el trilema alimentación, agua y energía según los ODS. La estrategia fomenta las Comunidades Rurales Bajas en Carbono, comunidades sin acceso a la red de Energía, situación habitual en el corredor seco mesoamericano. La estrategia va encaminada a la electrificación de la última milla, para e...

Aumentando la resiliencia y mitigando el cambio climático para el desarrollo rural: una experiencia en Honduras

This paper presents a novel methodology to simulate a gasifier power plant including an electric generator for the software HOMER Pro. The aim is to add gasifier power plants to the simulation of Hybrid Renewable Energy Microgrids for rural development of off-grid isolated rural communities. The methodology allows to take advantage of the inbuilt B...

PurposeConstruction and demolition waste (C&DW) is the largest waste stream in the European Union (EU) and all over the world. Proper management of C&DW and recycled materials—including the correct handling of hazardous waste—can have major benefits in terms of sustainability and the quality of life. The Waste Framework Directive 2008/98/EC aims to...

In this paper; for research and innovation projects without environmental goals; a procedure is proposed to operationalize the anticipation and reflexivity of environmental concerns in the initial phases. By using the expert knowledge of specialists; we have first conducted a study to identify the general environmental topics relevant in any kind o...

This paper presents a methodology to assess the stakeholders’ influence in a research project within the context of responsible research and innovation. The methodology is based on a combination of the multicriteria decision making technique analytic network process and the key areas of responsible research. The method allows ranking and ordering t...

Responsible Research and Innovation (RRI) has only lately included environmental sustainability as a key area for the social desirability of research and innovation. That is one of the reasons why just a few RRI projects and proposals include environmental sustainability, and Climate Change (CC) in particular. CC is one of the grand challenges of o...

p>Responsible Research and Innovation (RRI) has only lately included environmental sustainability as a key area for the social desirability of research and innovation. That is one of the reasons why just a few RRI projects and proposals include environmental sustainability, and Climate Change (CC) in particular. CC is one of the grand challenges of...

This paper proposes a combination of the Analytic Hierarchy Process with Goal Programming for a better valuation of companies. The methodology includes the economic dimension of the company and another based on its social responsibility. A set of relative and absolute economic variables is proposed including concepts like leverage, liquidity or sol...

There are an increasing number of individual or corporate investors who demand social responsibility (SR) to a financial asset. Social responsibility is a multi-dimensional concept that requires identifying a number of criteria and their weights to be assessed in a financial asset. Currently a varied discussion is held among practitioners and acade...

Ranking the barriers to the development of the renewable energy technologies in Colombia Colombia is one of the emerging economies of the South American continent. Besides, the energy demand is increasing faster than the energy production. On the other hand, a low carbon economy has been set as a strategic priority for the Colombian government. To...

Sustainability reports are tools for disseminating information to stakeholders and the public, serving the organizations in the dual purpose of communicating CSR and being accountable. The production of these reports has recently become more prevalent in the food industry, despite the fact this practice has received heavy criticism on two fronts: T...

The protected natural areas of Ecuador face several environmental threats; grazing is one of them in several national parks (NP) including the Cotopaxi National Park (CNP). National Park managers are proposing action alternatives to reduce grazing environmental impact while promoting social and economic development of cattle ranchers and the other...

Las memorias de sostenibilidad se utilizan, conjuntamente, como una herramienta de comunicación de la RSC y rendición de cuentas a las partes interesadas y a toda la sociedad. No obstante, reciben numerosas críticas en ambos sentidos. Dada su importancia, se desarrolla una metodología de evaluación de la capacidad de comunicación de las memorias de...

A procedure for determining the influential factors in NP management and supporting participatory decision making is proposed. The procedure was applied to the Waraira Repano national park (WRNP) in Venezuela. Key aspects found for the effective management of WRNP showed to be Driving forces like "Human population growth" or "Patterns of use of nat...

Sustainability reports are jointly used as a communication tool of CSR and accountability to all stakeholders and society. However, they receive heavy criticism on both fronts. In light of the importance of this practice, a methodology for assessing the communication capabilities of the sustainability reports of companies in the Spanish food sector...

Given that prioritization of programmes is a key concern in Local Agenda 21 processes, the aim of this paper is to explore how the Analytic Network Process (ANP) can provide greater consistency and legitimacy to prioritization of local action plans. Through the analysis of an experience in the municipality of Benetusser in Spain, the study shows ho...

The protected natural areas of Ecuador face several environmental threats; grazing is one of them in several national parks (NP) including the Cotopaxi National Park (CNP). National Park managers are proposing action alternatives to reduce grazing environmental impact while promoting social and economic development of cattle ranchers and the other...

Small and Medium Sized Enterprises (SME) face barriers to the implementation and development of eco-efficiency that could be overcome taking advantage of the adequate stimuli and incentives. A previous research and a thorough literature analysis show Public Administration (PA) is a key stakeholder. PA could use better its tools to stimulate SME to...

A previous comparative analysis among industries in different European and Latin American countries, among them, Venezuela, showed how Government actions represent powerful drivers for eco-efficiency. These actions can be especially useful for small and medium enterprises (SMEs) that represent more than 90% of all enterprises in these countries. Di...

According to Rey (1996), organizations of any size, structure or business sector, need, in order to succeed, to establish an appropriate management system. That is why the "models of excellence" or "total quality management" guide enterprises towards the "integrated process management", and they allow them to create a quality culture, by measuring...

The evaluation of sustainable tourism strategies promoted by National Parks (NP) related stakeholders is a key concern for NP managers. To help them in their strategic evaluation procedures, in this paper we propose a methodology based on the Analytic Network Process and a Delphi-type judgment-ensuring procedure. The approach aims at involving stak...

In this paper a methodology based on the Analytic Network Process (ANP) for assessing the overall efficiency of soil remediation techniques is presented. The purpose of the proposal is to rank order the techniques in a reliable way. The methodology is intended for supporting the decision making process of the public administration and involves tech...

Making decisions towards sustainable development is an activity which concerns high level of uncertainty. In the present paper a study about sustainable tourism management of national parks is presented. A case study approach for coastal national parks (NP) of Venezuela is used. Tourism could contribute to the sustainability of NP but currently it...

Decision‐making for sustainable development involves high levels of uncertainty. In the present paper a study about sustainable management of tourism in national parks is presented. A case study approach is applied to coastal national parks (NP) in Venezuela. Tourism can contribute to the sustainability of national parks but currently it is their m...