INTRODUCTION The problems discussed in forums such as that within the European Charter for Solar Energy in Architecture and Urban Planning are still up-to-date.1 The role architecture plays in energy consumption calls...INTRODUCTION The problems discussed in forums such as that within the European Charter for Solar Energy in Architecture and Urban Planning are still up-to-date.1 The role architecture plays in energy consumption calls for a conceptual reorientation that ensures a responsible design approach to the environment and the use of renewable resources based on local conditions.In this sense,the Finnish architect Alvar Aalto(1898-1976)figures as a pioneering precedent of a sustainable architecture.The Nordic climate and the deeply nature-concerned culture within which he lived are factors that derived a conscious design method characterised by the exploration of environmental concepts.The contextual approach was developed since his early career and reached a peak in his own summer house erected in Finland in the year 1953.As Aalto himself comments,this building had the advantage of being the‘experimental game’of the architect,where he could freely work without worrying about the constraints of usual project requirements.2 The biography of Aalto shows that he used to help his father,who was a surveyor,by drawing plans from the Finnish territory.3 Aalto himself grew up in Jyväskylä,a town located on the same lake studied here,and worked there in the first years of his professional career.He was familiar with the landscape and knew well in advance the general features of the house’s surroundings.The Summer House is a well-known building that has drawn attention in the academic context.Aalto published a seminal,brief text when the construction of the main block was finished,where experiments concerning topographical adaptation,material durability,and solar heating passive systems are mentioned.4 After appearing in the complete work of the architect,5 the Summer House was briefly mentioned in critical literature,6 and in recent years has been the subject of numerous studies.7 This panorama has contributed important information about the site and the house,which were,nevertheless,considered mainly by aesthetical and typological means.The bioclimatic themes seem to have not been systematically explored yet.The present essay seeks to identify and explain some design strategies that can illustrate the bioclimatic structure of the building.8 The textual argumentation is supported by photographs,diagrams,and a physical model.An introduction to the house is given by describing its geographical and programmatic situation.The study is then developed through the following topics:site and program;placement;spatial organization;and exterior-interior relations.As a conclusion,the house is evaluated as a precedent of an environmentally-concerned architecture.展开更多
The main aim of this paper was to study the influence of ventilation during a typical experimental day, in the internal air temperature as well as in internal surface temperatures under the conditions of the outer env...The main aim of this paper was to study the influence of ventilation during a typical experimental day, in the internal air temperature as well as in internal surface temperatures under the conditions of the outer environment, using an experimental method which allows a comparison of the thermal performance between four cell tests： a prototype called control （no vegetation） and three with different combinations of vegetation （roofs and facades） installed in a region of tropical climate. The experiments were developed in four test cells with dimensions 2.0 m × 2.50 m × 2.7 m. Measurements of internal surface temperatures and internal air temperatures were collected with the use of specific equipment, a data logger （CR1000, Campbell Scientific Inc.）, connected with two multiplexers 32 channels （416AM Campbell Scientific Inc.）. Data were recorded over a year and a typical heat day was selected, which was September 24, 2015. The results show that ventilation affects the internal temperature of the air, so that this gets even surpass the external temperature. Regarding surface temperatures, increased temperature, except those which are provided with vegetation, namely, the surfaces which have green walls and green roofs file the lower temperatures. Therefore, we can confirm the ability of vegetation to maintain more pleasant internal conditions compared to the test cells built with conventional materials, thus it can reduce cooling load efficiency.展开更多
The main aims of this paper were to study and demonstrate the benefits the plant systems can provide indoors in a critical heat day. This study proposed an experimental method to try to understand the thermal response...The main aims of this paper were to study and demonstrate the benefits the plant systems can provide indoors in a critical heat day. This study proposed an experimental method to try to understand the thermal response to heat of four different systems： a prototype called control （no vegetation） and three with different combinations of vegetation （green roofs and green facades） installed in a tropical climate region. The experiments were developed in four test cells with dimensions 2.0 m × 2.50 m× 2.71 m. Measurements of internal surface temperatures and internal air temperatures were collected with the use of specific equipment, a data logger （CR1000, Campbell Scientific Inc.）, connected with two multiplexers 32 channels （416AM Campbell Scientific Inc.）. Data were recorded over a year and a critical day heat was selected, which was September 24, 2015.The results show that the use of plant systems in buildings establishes a passive technique in reducing energy consumption because of the high incidence of summer solar radiation which is reduced and simultaneously, it maintains thermal internal conditions more pleasant than external ones, because of the best thermal behaviour, which was observed in the test cell with vegetation on both roofs and facades. The biggest difference between maximum internal air temperatures registered was 2 ℃.展开更多
The study of thermal comfort in the built environment is of great relevance since it stimulates the development of more sustainable buildings suited to the local climate and able to meet the human need for well-being....The study of thermal comfort in the built environment is of great relevance since it stimulates the development of more sustainable buildings suited to the local climate and able to meet the human need for well-being.The objective of this research was to develop,construct and test a passive heating system adaptable to existing buildings,reducing the need for major interventions and increasing thermal comfort in the indoor environment.The adopted methodological approach was a case study in a single-family residence located in the Brazilian city of Petrópolis,a mountainous region with a humid subtropical climate and a rigorous winter.The proposed passive heating system is totally isolated,thus mitigating air infiltration and promoting increase of temperature in the internal environment through the absorption of solar energy and greenhouse effect.This kind of solution is especially interesting for residents of this region,since most of the city buildings are not adequately prepared to handle low temperatures.Thus,given local climatic conditions,residents need to spend a lot of money on the acquisition and operation of electric or gas heating systems.The results indicated that the developed system,in fact,increased the temperature of the studied room when compared to an adjacent room,which did not receive the device.The findings of this paper,therefore,provide a valuable reference for experts and practitioners in the selection of heating systems to be used in cold regions,and proved that passive systems can provide thermal comfort at the same time that optimize the interaction of the building with the local ecosystem.展开更多
文摘INTRODUCTION The problems discussed in forums such as that within the European Charter for Solar Energy in Architecture and Urban Planning are still up-to-date.1 The role architecture plays in energy consumption calls for a conceptual reorientation that ensures a responsible design approach to the environment and the use of renewable resources based on local conditions.In this sense,the Finnish architect Alvar Aalto(1898-1976)figures as a pioneering precedent of a sustainable architecture.The Nordic climate and the deeply nature-concerned culture within which he lived are factors that derived a conscious design method characterised by the exploration of environmental concepts.The contextual approach was developed since his early career and reached a peak in his own summer house erected in Finland in the year 1953.As Aalto himself comments,this building had the advantage of being the‘experimental game’of the architect,where he could freely work without worrying about the constraints of usual project requirements.2 The biography of Aalto shows that he used to help his father,who was a surveyor,by drawing plans from the Finnish territory.3 Aalto himself grew up in Jyväskylä,a town located on the same lake studied here,and worked there in the first years of his professional career.He was familiar with the landscape and knew well in advance the general features of the house’s surroundings.The Summer House is a well-known building that has drawn attention in the academic context.Aalto published a seminal,brief text when the construction of the main block was finished,where experiments concerning topographical adaptation,material durability,and solar heating passive systems are mentioned.4 After appearing in the complete work of the architect,5 the Summer House was briefly mentioned in critical literature,6 and in recent years has been the subject of numerous studies.7 This panorama has contributed important information about the site and the house,which were,nevertheless,considered mainly by aesthetical and typological means.The bioclimatic themes seem to have not been systematically explored yet.The present essay seeks to identify and explain some design strategies that can illustrate the bioclimatic structure of the building.8 The textual argumentation is supported by photographs,diagrams,and a physical model.An introduction to the house is given by describing its geographical and programmatic situation.The study is then developed through the following topics:site and program;placement;spatial organization;and exterior-interior relations.As a conclusion,the house is evaluated as a precedent of an environmentally-concerned architecture.
文摘The main aim of this paper was to study the influence of ventilation during a typical experimental day, in the internal air temperature as well as in internal surface temperatures under the conditions of the outer environment, using an experimental method which allows a comparison of the thermal performance between four cell tests： a prototype called control （no vegetation） and three with different combinations of vegetation （roofs and facades） installed in a region of tropical climate. The experiments were developed in four test cells with dimensions 2.0 m × 2.50 m × 2.7 m. Measurements of internal surface temperatures and internal air temperatures were collected with the use of specific equipment, a data logger （CR1000, Campbell Scientific Inc.）, connected with two multiplexers 32 channels （416AM Campbell Scientific Inc.）. Data were recorded over a year and a typical heat day was selected, which was September 24, 2015. The results show that ventilation affects the internal temperature of the air, so that this gets even surpass the external temperature. Regarding surface temperatures, increased temperature, except those which are provided with vegetation, namely, the surfaces which have green walls and green roofs file the lower temperatures. Therefore, we can confirm the ability of vegetation to maintain more pleasant internal conditions compared to the test cells built with conventional materials, thus it can reduce cooling load efficiency.
文摘The main aims of this paper were to study and demonstrate the benefits the plant systems can provide indoors in a critical heat day. This study proposed an experimental method to try to understand the thermal response to heat of four different systems： a prototype called control （no vegetation） and three with different combinations of vegetation （green roofs and green facades） installed in a tropical climate region. The experiments were developed in four test cells with dimensions 2.0 m × 2.50 m× 2.71 m. Measurements of internal surface temperatures and internal air temperatures were collected with the use of specific equipment, a data logger （CR1000, Campbell Scientific Inc.）, connected with two multiplexers 32 channels （416AM Campbell Scientific Inc.）. Data were recorded over a year and a critical day heat was selected, which was September 24, 2015.The results show that the use of plant systems in buildings establishes a passive technique in reducing energy consumption because of the high incidence of summer solar radiation which is reduced and simultaneously, it maintains thermal internal conditions more pleasant than external ones, because of the best thermal behaviour, which was observed in the test cell with vegetation on both roofs and facades. The biggest difference between maximum internal air temperatures registered was 2 ℃.
文摘The study of thermal comfort in the built environment is of great relevance since it stimulates the development of more sustainable buildings suited to the local climate and able to meet the human need for well-being.The objective of this research was to develop,construct and test a passive heating system adaptable to existing buildings,reducing the need for major interventions and increasing thermal comfort in the indoor environment.The adopted methodological approach was a case study in a single-family residence located in the Brazilian city of Petrópolis,a mountainous region with a humid subtropical climate and a rigorous winter.The proposed passive heating system is totally isolated,thus mitigating air infiltration and promoting increase of temperature in the internal environment through the absorption of solar energy and greenhouse effect.This kind of solution is especially interesting for residents of this region,since most of the city buildings are not adequately prepared to handle low temperatures.Thus,given local climatic conditions,residents need to spend a lot of money on the acquisition and operation of electric or gas heating systems.The results indicated that the developed system,in fact,increased the temperature of the studied room when compared to an adjacent room,which did not receive the device.The findings of this paper,therefore,provide a valuable reference for experts and practitioners in the selection of heating systems to be used in cold regions,and proved that passive systems can provide thermal comfort at the same time that optimize the interaction of the building with the local ecosystem.
