Daniel Sánchez-García

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• PhD in Architecture
• Assistant Professor at Universidad de Cádiz

Building performance simulations (BPS) can be used to estimate the energy required to deliver indoor environmental conditions acceptable for the occupants. Although the adaptive approach has been historically addressed only to naturally ventilated spaces, recent research has found that it could also be applied to air-conditioning spaces. Thus, it i...

It has recently become clear that using adaptive thermal comfort models to determine setpoint temperatures is a successful energy-saving method. Global models like ASHRAE 55 and EN16798-1 have been used in recent experiments using adaptive setpoint temperatures. This work, however, has taken a different route by concentrating on a region-specific A...

Recent research has looked into the potential for energy savings from adopting setpoint temperatures based on adaptive comfort. The recently suggested Adaptive-Comfort-Control-Implementation Script (ACCIS), a computational method that expands the use of air conditioning to adaptive comfort, can be used to accomplish this. The user's setup and an In...

Recently, the energy saving potential from using setpoint temperatures based on adaptive comfort has been studied. This study proposes a computational approach, the Adaptive-Comfort-Control-Implementation Script (ACCIS), to extend the air-conditioning usage to adaptive comfort. ACCIS transforms PMV-based into adaptive setpoint building energy model...

Heating, Ventilating and Air Conditioning (HVAC) systems represent one of the highest energy consumptions for office buildings. They are traditionally based on fixed setpoint temperatures during working hours and disregard outdoor conditions. The use of natural ventilation coupled with HVAC systems is frequently proposed when considering the global...

Extracurricular activities play a key role in the competency development of university students in engineering. These endeavors, such as participating in competitions, engaging in multidisciplinary projects, integrating into professional societies, and collaborating with student associations, provide opportunities to apply theoretical knowledge the...

Bachelor and Master engineering theses assess professional competencies. These theses evolved to meet professional demands, verifying a good preparation. Historically, Spanish engineering required rigorous final projects for professional practice, regulated by professional colleges to ensure quality. These works became formal curriculum subjects, i...

Understanding how people adapt to indoor temperature conditions is crucial to designing places that both improve occupant well-being and achieve energy efficiency goals. The premise behind adaptive setpoint temperatures is that people would adjust to mechanically conditioned spaces by acting as though they were naturally ventilated. Thus far, the p...

An approach with potential benefits in terms of energy efficiency and sustainability is adaptive thermal comfort, which recognizes the variability and subjectivity of individuals' thermal preferences. International standards have included models that allow predicting users' comfort levels based on outdoor temperature, but they are not always applic...

Improving technical content assimilation and student performance is a great challenge in engineering and architecture degree programs. Building systems courses are based on overloaded syllabuses due to the great regulatory development, physics fundamentals, and market solutions, and these syllabuses could be difficult for students. This study focus...

The emergence of artificial intelligence technologies can lead to changes in the university. Tools like ChatGPT or Bing Chat can be helpful to students by automatically generating manuscripts. However, this aspect impoverishes their learning. Given this circumstance, teachers should have sufficient capacity to know how to detect this type of text....

The building sector plays an important role in energy performance and energy poverty. Decarbonization policies aims to reducing the energy consumption of the built environment, especially using HVAC systems better. Some studies have adopted adaptive thermal comfort models to increase energy savings in winter and summer. However, applying models bas...

Adopting setpoint temperatures guided by adaptive thermal comfort models offers an efficient approach to conserving energy. Current research gives consideration to global models like ASHRAE Standard 55 and EN16798-1, which incorporate adaptive setpoint temperatures. However, this study follows a distinct path by incorporating a localized Indian ada...

POSTPRINT AVAILABLE IN: https://hdl.handle.net/10481/88436 It has been found in recent years that using setpoint temperatures based on adaptive thermal comfort models is a successful method of energy conservation. Recent studies using adaptive setpoint temperatures incorporate international models from ASHRAE Standard 55 and EN16798-1. This study,...

This research will set the concept of Positive Energy Buildings (PEB) from a dynamic and holistic point of view. Nowadays, the building sector is required to directly reduce GHG emissions (approximately 90%). In this context, the Energy Performance of Buildings Directive (EU) 2018/844 has set the need of European countries to establish energy strat...

POSTPRINT AVAILABLE IN: https://hdl.handle.net/10481/88449 Energy renovations carried out in energy poor households should consider a holistic view in the short-, mid- and long-term, especially in warm areas such as Andalusia, in the south of Spain. This study addresses the existing knowledge gap on technological and economic interactions in the en...

POSTPRINT AVAILABLE IN: https://hdl.handle.net/10481/88452 The climate change leads to periods of extreme events (i.e. reduction of cold seasons, heat waves, overheating, urban heat island among others) that affect the performance of residential and tertiary buildings with high occupancy (i.e. hospitals, schools, commercial centres, offices etc). H...

Extreme weather events and rising global temperatures are signs of the urgent threat that climate change poses to our planet [...]

The built environment has a significant environmental impact, contributing to the increasing effect of climate change. The energy saving of buildings is essential to achieve the sustainable objectives of the European Union. To do this, an adequate strategy can be the proper use of HVAC Systems. In this sense, adaptive slogan temperatures can be an...

Adaptive thermal comfort has gained momentum within the scientific community as a cost effective and affordable way of maintaining acceptable levels of comfort in dwellings while abating energy expenditure. At the moment two international standards, namely the European EN16798-1 and the American ASHRAE55-2010 shape the understanding of adaptive com...

A minimal energy demand should be required in buildings both to optimize the performance of the building façade and to control solar gains. According to the existing studies and national standards, the climate zone classification is usually based on both the degree-days methodology and outdated climate data, thus managing HVAC systems inappropriate...

POSTPRINT AVAILABLE IN: https://hdl.handle.net/10481/87766 Energy poverty has been addressed as a global problem. Many studies have been conducted, and several indicators have been established to detect energy poverty. However, most analyses have been performed at a yearly level without considering the differences throughout the year. This study p...

POSTPRINT AVAILABLE IN: https://hdl.handle.net/10481/88428 Using automated tools to detect energy poverty (EP) is a developing field. Artificial intelligence and data mining could be used to provide solutions to reduce EP cases. As for Spain, there is no study addressing this characterization that could be significant in warmer zones of the countr...

The use of setpoint temperatures based on adaptive thermal comfort models has been identified as an efficient energy saving measure in the latest years. The recent studies applying adaptive setpoint temperatures consider ASHRAE and EN16798-1 international models. However, this study has considered a local Japanese adaptive comfort model instead. Th...

The possibility for energy savings from implementing setpoint temperatures based on adaptive comfort has recently been investigated. This can be achieved by using the recently proposed Adaptive-Comfort-Control-Implementation Script (ACCIS), that is a computational approach which extends the air-conditioning usage to adaptive comfort. According to b...

Utilizing adaptive setpoint temperatures, which are setpoint temperatures dependent on adaptive thermal comfort models, has been recently considered and ended up being an energy conservation measure (ECM) with a significant energy saving potential. However, the only method to perform building energy simulations with adaptive setpoint temperatures w...

Accomplishing energy saving in buildings is essential to achieve the 2050 decarbonization goals. In order to achieve this, buildings must improve their energy performance to ensure both thermal comfort for users and a low environmental impact. For this reason, it is necessary to carry out interdisciplinary analyses of the energy saving–thermal comf...

Summer weather conditions in Spain generate many thermal discomfort hours. Consequently, it is difficult for low-income family units to ensure adequate conditions inside dwellings. Natural ventilation could improve the thermal comfort conditions of these users. However, the number of thermal comfort hours could be limited in summer. This study anal...

Building energy improvement is a fundamental pillar to avoid the energy poverty of families. However, energy rehabilitation could be unattainable for many low-income families. For this reason, the use of operational patterns based on adaptive thermal comfort models could improve their situation. This chapter analyses the results of reducing the ene...

Reducing energy poverty is among the main current concerns. Deficient energy performance could contribute to energy poverty cases, so energy rehabilitation in buildings is essential to take action from a technical perspective. However, the limitations related to the use of energy conservation measures in warm climates could prevent from reducing en...

POSTPRINT AVAILABLE IN: https://hdl.handle.net/10481/87742 High building energy consumption to guarantee users’ thermal comfort has greatly impact the built environment worldwide. Energy saving strategies based on adaptive comfort models could be an opportunity to reduce the energy consumption of the built environment. However, climate change coul...

Fuel poverty is a pressing issue in several European countries, and Spain is no exception. Traditionally, it has been associated with cold conditions, but recent studies in the field have stressed its prevalence in warm countries too, during summer. Further, forecasts of climate change for these territories predict more severe summers. This envisag...

The reduction of fuel poverty is among the major challenges of countries, policymakers, stakeholders, and researchers. Many contributions have today emerged; however, two aspects should be widely considered. On the one hand, the use of strategies based on the reduction of energy consumption through the adaptive approach, and on the other hand, the...

POSTPRINT AVAILABLE IN: https://digibug.ugr.es/handle/10481/87730 In southern European countries, summer temperatures could contribute to a high cooling energy consumption. Family units with fewer economic resources living in social dwellings could suffer from fuel poverty if they want to use air conditioning systems. Otherwise, they could face di...

POSTPRINT AVAILABLE IN: https://hdl.handle.net/10481/88460 Most countries from the European Union work towards a low-carbon horizon in the building sector. As for Spain, the last modification of the Spanish Building Technical Code in 2020 establishes that every building ensuring the fulfilment of the regulation will obtain the category of nearly z...

POSTPRINT AVAILABLE IN: https://hdl.handle.net/10481/87761 The reduction of energy poverty is among the main current challenges. One of the recent approaches is based on the reduction of the energy consumption through the climate adaptability of users. This research analyses the possibility of using adaptive setpoint temperatures to reduce the ris...

Climate change is one of the main problems of the society of the 21st century. High emissions of Greenhouse Gases (GHG) are generating more and more extreme living conditions, so GHG emissions should be reduced. Regarding buildings, their high energy consumption is mainly responsible for the contributions of GHG to the atmosphere. Ambitious goals f...

A sustainable use of active heating, ventilation, and air conditioning (HVAC) systems is crucial for minimum energy consumption. Currently, research studies are increasingly applying adaptive setpoint temperatures, thus reducing considerably the energy consumption without influencing comfort levels excessively. Most of them, however, are focused on...

Reports of Intergovernmental Panel on Climate Change have set various greenhouse gas emissions scenarios, through which the evolution of the temperature of the planet can be estimated throughout the 21st century. The reduction of the emissions from the different activities carried out by mankind is crucial to mitigate greenhouse gas emissions. One...

POSTPRINT AVAILABLE IN: https://digibug.ugr.es/handle/10481/87710 Many studies are nowadays focused on the application of energy conservation measures (ECMs) to building sector because of the reductions of both greenhouse gases and energy consumption set by the European Union. Heating, Ventilating and Air Conditioning (HVAC) systems are the main...

POSTPRINT available in: https://hdl.handle.net/10481/88455 The use of setpoint temperatures based on adaptive comfort algorithms is a method more and more used as an energy saving technique. Knowing the relationship between inhabitable rooms with their specific climate is crucial for users’ climate adaptation, especially in a global warming contex...

POSTPRINT AVAILABLE IN: https://hdl.handle.net/10481/87744 There is currently a need to restore the existing building stock. For this purpose, an energy evaluation of the building is conducted before deciding which intervention should be made. In that intervention, setpoint temperatures based on the index Predicted Mean Vote (PMV) are considered....

The effective asset management of real estate is an area of great interest to the building engineering sector as a whole. The determination and programming of maintenance tasks is essential to allow finance entities to establish market order according to a given budget. The process works slowly, and some optimization is generally required. In this...

In Spain, the current Building Technical Code (referred to as CTE in Spanish) establishes restrictive setpoint temperatures that ensure high levels of thermal comfort but at the expense of high energy demands. However, the strategy to achieve thermal comfort in offices tends towards the adaptive approach, since users manually open windows, control...

The poor maintenance of social dwellings causes the possible building deficiencies to be significantly increased, especially when most of these dwellings have been built before any thermal standard and without considering the effect of climate change. Façades are one of the building elements which are most degraded by the contact with the exterior,...

Currently, the knowledge of energy consumption in buildings of new and existing dwellings is essential to control and propose energy conservation measures. Most of the predictions of energy consumption in buildings are based on fixed values related to the internal thermal ambient and pre-established operation hypotheses, which do not reflect the dy...

Comfort analysis of existing naturally ventilated buildings located in mild climates, such as the ones in the Mediterranean zones, offer room for a reduction in the present and future energy consumption. Regarding Spain, most of the present building stock was built before energy standards were mandatory, let alone considerations about global warmin...

Currently, energy consumption is high in most of office buildings, caused mainly by the use of HVAC systems, in which thermal comfort is achieved without considering the energy implications. The objective of this research is to reduce energy demand and consumption, maintaining high levels of adaptive thermal comfort, based on the application of ada...

Teniendo en cuenta la adaptabilidad del usuario al entorno edificado, el análisis de confort de viviendas existentes con ventilación natural es crucial para reducir los consumos energéticos actual y futuro. En el caso de Europa, el parque de viviendas fue construido principalmente antes de que se publicaran normativas relacionadas con el consumo en...

Resumen Aunque los estándares de confort en los edificios de oficinas acondicionados con medios mecánicos se han estudiado ampliamente a través de la norma ISO 7730 basada en los estudios de Fanger, todavía no existe un enfoque consensuado para el confort térmico en las viviendas. Muchas de esas viviendas, que componen un bloque, se han construido...

The comfort standards in mechanically conditioned office buildings have been widely studied through comfort model gathered in ISO 7730 [1] developed by Fanger [2]. There is not a consensual approach towards occupant’s comfort in dwellings yet. In Spain, the 35,5% [2] of the housing stock was built before 1980 which means it was built under no energ...