Pub Date : 2005-10-01DOI: 10.1177/1744259105056267
Mohammad S. Al-Homoud
Early design decisions can be significant in determining the thermal performance of buildings. However, necessary information to base such decisions is rarely available. Implementation of systematic approaches to the design process can help in providing such information with the least cost. This article presents the development and validation of an optimization model that utilizes a direct search optimization technique incorporated with an hourly building energy simulation program for the optimum thermal design of building envelopes. The implementation results of the model to the design of office and residential buildings at different climatic conditions are also presented.
{"title":"A Systematic Approach for the Thermal Design Optimization of Building Envelopes","authors":"Mohammad S. Al-Homoud","doi":"10.1177/1744259105056267","DOIUrl":"https://doi.org/10.1177/1744259105056267","url":null,"abstract":"Early design decisions can be significant in determining the thermal performance of buildings. However, necessary information to base such decisions is rarely available. Implementation of systematic approaches to the design process can help in providing such information with the least cost. This article presents the development and validation of an optimization model that utilizes a direct search optimization technique incorporated with an hourly building energy simulation program for the optimum thermal design of building envelopes. The implementation results of the model to the design of office and residential buildings at different climatic conditions are also presented.","PeriodicalId":435154,"journal":{"name":"Journal of Thermal Envelope and Building Science","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133979516","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2005-10-01DOI: 10.1177/1744259105056291
A. Abdou, I. Budaiwi
In harsh climates, utilizing thermal insulation in the building envelope can substantially reduce the building thermal load and consequently its energy consumption. The performance of the thermal insulation material is mainly determined by its thermal conductivity (k), which is dependent on the material’s density, porosity, moisture content, and mean temperature difference. In practice, the k-value is normally evaluated at 24 C (i.e., k24) according to relevant ASTM standards. However, when placed in the building envelope, thermal insulation materials can be exposed to significant ambient temperature and humidity variations depending on the prevailing climatic conditions. The objective of this study is to assess and compare the effect of operating temperatures on the k-value of various insulation materials commonly used in the building envelope. The k-values for seven categories of insulation materials (i.e., fiberglass, wood wool, mineral wool, rock wool, polyethylene, polyurethane, and polystyrene) are measured at different mean temperatures using an automated heat flow meter. Some preliminary measurements are reported for the purpose of assessing the impact of k-value variation on envelope-induced cooling loads (Budaiwi et al. 2002). In this study, comprehensive measurements, comparison, and analyses of results are presented and discussed. These underline the k-value degree of sensitivity ((Δk/ΔC)/k24) of various insulation materials with rising operating temperature. This would allow designers to better evaluate the thermal performance of building envelopes leading to a more realistic thermal assessment and energy requirements of buildings.
在恶劣的气候条件下，在建筑围护结构中使用隔热材料可以大大减少建筑的热负荷，从而减少其能源消耗。保温材料的性能主要决定于它的导热系数(k)，它取决于材料的密度、孔隙率、含水率和平均温差。在实际应用中，k值通常在24℃(即k24)时根据ASTM相关标准进行评估。然而，当放置在建筑围护结构中时，根据当时的气候条件，保温材料可能会暴露在显著的环境温度和湿度变化中。本研究的目的是评估和比较工作温度对建筑围护结构中常用的各种保温材料k值的影响。7类保温材料(即玻璃纤维、木棉、矿棉、岩棉、聚乙烯、聚氨酯和聚苯乙烯)的k值在不同的平均温度下使用自动热流计测量。为了评估k值变化对包络冷却负荷的影响，报道了一些初步测量结果(Budaiwi et al. 2002)。在这项研究中，综合测量，比较和分析的结果提出和讨论。这些强调了随着工作温度的升高，各种绝缘材料的k值灵敏度((Δk/ΔC)/k24)。这将使设计师能够更好地评估建筑围护结构的热性能，从而更现实地评估建筑的热性能和能源需求。
{"title":"Comparison of Thermal Conductivity Measurements of Building Insulation Materials under Various Operating Temperatures","authors":"A. Abdou, I. Budaiwi","doi":"10.1177/1744259105056291","DOIUrl":"https://doi.org/10.1177/1744259105056291","url":null,"abstract":"In harsh climates, utilizing thermal insulation in the building envelope can substantially reduce the building thermal load and consequently its energy consumption. The performance of the thermal insulation material is mainly determined by its thermal conductivity (k), which is dependent on the material’s density, porosity, moisture content, and mean temperature difference. In practice, the k-value is normally evaluated at 24 C (i.e., k24) according to relevant ASTM standards. However, when placed in the building envelope, thermal insulation materials can be exposed to significant ambient temperature and humidity variations depending on the prevailing climatic conditions. The objective of this study is to assess and compare the effect of operating temperatures on the k-value of various insulation materials commonly used in the building envelope. The k-values for seven categories of insulation materials (i.e., fiberglass, wood wool, mineral wool, rock wool, polyethylene, polyurethane, and polystyrene) are measured at different mean temperatures using an automated heat flow meter. Some preliminary measurements are reported for the purpose of assessing the impact of k-value variation on envelope-induced cooling loads (Budaiwi et al. 2002). In this study, comprehensive measurements, comparison, and analyses of results are presented and discussed. These underline the k-value degree of sensitivity ((Δk/ΔC)/k24) of various insulation materials with rising operating temperature. This would allow designers to better evaluate the thermal performance of building envelopes leading to a more realistic thermal assessment and energy requirements of buildings.","PeriodicalId":435154,"journal":{"name":"Journal of Thermal Envelope and Building Science","volume":"251 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121130577","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2005-10-01DOI: 10.1177/1744259105057223
E. Mňahončáková, Roman Vejmelka, M. Jiřičková, R. Černý, P. Rovnaníková, P. Bayer
The basic thermal and hygric parameters of two different types of carbon-fiber-reinforced cement composites are analyzed in this article. The thermal conductivity, specific heat capacity, moisture diffusivity, and water vapor diffusion resistance factor are determined as functions of thermal load and tensile load applied before the measurement as well as of the combination of both types of load. The tensile load up to failure is found to be not a very significant factor for all material properties analyzed except for the moisture diffusivity. On the other hand, the thermal load is observed to result already at 600 C in considerable changes in all investigated thermal and hygric properties except for the specific heat capacity. The combinations of thermal and tensile loads lead to similar results as the effect of the thermal load alone so that the domination of the thermal load is apparent. This is supposed to be due to the positive effect of randomly distributed carbon fibers that can reduce the damage of the pore structure by the tensile stress. The resistance of the materials studied to high temperatures expressed by the change of hygric and thermal properties after thermal load is found to be positively affected by the application of the high alumina cement and in the case of the Portland cement-based composite also by using the autoclaving procedure in the production process.
{"title":"Thermal and Hygric Parameters of Carbon-fiber-reinforced Cement Composites after Thermal and Mechanical Loading","authors":"E. Mňahončáková, Roman Vejmelka, M. Jiřičková, R. Černý, P. Rovnaníková, P. Bayer","doi":"10.1177/1744259105057223","DOIUrl":"https://doi.org/10.1177/1744259105057223","url":null,"abstract":"The basic thermal and hygric parameters of two different types of carbon-fiber-reinforced cement composites are analyzed in this article. The thermal conductivity, specific heat capacity, moisture diffusivity, and water vapor diffusion resistance factor are determined as functions of thermal load and tensile load applied before the measurement as well as of the combination of both types of load. The tensile load up to failure is found to be not a very significant factor for all material properties analyzed except for the moisture diffusivity. On the other hand, the thermal load is observed to result already at 600 C in considerable changes in all investigated thermal and hygric properties except for the specific heat capacity. The combinations of thermal and tensile loads lead to similar results as the effect of the thermal load alone so that the domination of the thermal load is apparent. This is supposed to be due to the positive effect of randomly distributed carbon fibers that can reduce the damage of the pore structure by the tensile stress. The resistance of the materials studied to high temperatures expressed by the change of hygric and thermal properties after thermal load is found to be positively affected by the application of the high alumina cement and in the case of the Portland cement-based composite also by using the autoclaving procedure in the production process.","PeriodicalId":435154,"journal":{"name":"Journal of Thermal Envelope and Building Science","volume":"356 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116132692","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2005-10-01DOI: 10.1177/1744259105057695
A. Rudd
This article reports on field experience of unvented cathedralized (UC) attics in several environments in the United States. Traditionally, in some regions of the country, because of high water tables or the risk of flash flooding and lower cost, slab on grade construction is a preferred mode of construction. Mechanical equipment for air conditioning and distribution ducts are usually located in the attic spaces to conserve space. Conventional construction involves providing insulation on the floor of the attic and venting the attic space to the outside. The loss in efficiency in operation of the equipment and through duct leakage is no longer sustainable. Insulating the attic roof itself and blocking of ventilation to the outside transfers the air and thermal energy controls from the boundary with the living space to the plane of the roof. The air distribution systems now fall within conditioned space, which increases their efficiency, durability, and maintainability. While design criteria vary for different climatic regions, UC attics can be insulated in various ways and by using different vapor diffusion resistance strategies of the roof assemblies depending on the climate. The field data presented in this article include measured temperature of asphalt shingles, and thermal and moisture conditions of attic spaces and roof sheathing, as well as air leakage rates. This is of interest for determining probable roofing durability. A more complete understanding of the hygrothermal performance of the assemblies was gained through these measurements.
{"title":"Field Performance of Unvented Cathedralized (UC) Attics in the USA","authors":"A. Rudd","doi":"10.1177/1744259105057695","DOIUrl":"https://doi.org/10.1177/1744259105057695","url":null,"abstract":"This article reports on field experience of unvented cathedralized (UC) attics in several environments in the United States. Traditionally, in some regions of the country, because of high water tables or the risk of flash flooding and lower cost, slab on grade construction is a preferred mode of construction. Mechanical equipment for air conditioning and distribution ducts are usually located in the attic spaces to conserve space. Conventional construction involves providing insulation on the floor of the attic and venting the attic space to the outside. The loss in efficiency in operation of the equipment and through duct leakage is no longer sustainable. Insulating the attic roof itself and blocking of ventilation to the outside transfers the air and thermal energy controls from the boundary with the living space to the plane of the roof. The air distribution systems now fall within conditioned space, which increases their efficiency, durability, and maintainability. While design criteria vary for different climatic regions, UC attics can be insulated in various ways and by using different vapor diffusion resistance strategies of the roof assemblies depending on the climate. The field data presented in this article include measured temperature of asphalt shingles, and thermal and moisture conditions of attic spaces and roof sheathing, as well as air leakage rates. This is of interest for determining probable roofing durability. A more complete understanding of the hygrothermal performance of the assemblies was gained through these measurements.","PeriodicalId":435154,"journal":{"name":"Journal of Thermal Envelope and Building Science","volume":"150 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116348345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2005-07-01DOI: 10.1177/1744259105051798
C. Filippín
The present work analyzes the consumption of energy of three typologically and technologically different buildings, and its interaction with dimensional, morphological, and thermal indicators. The comparison of heat energy consumed by the conventional and the solar buildings (individual and apartments) allows the evaluation of the energy saved through the use of passive solar techniques and thermal envelopes. The study buildings are located in Santa Rosa (capital of the province of La Pampa) in Argentina. The latitudinal variation of degree days oscillates between 1300 and 1600 C to the north and the south, respectively. The results show the high correlation between the energy consumption and the energy loss through the building’s envelope. In buildings with conventional technology, the envelope (without insulation) reaches a G value of 4.13 W/m3 C, higher than the admissible maximum value stipulated by the N. IRAM 11604 for the study region. The technologically optimized construction through the use of an energy-efficient envelope, a carpentry with double glazing, and a collecting area of 12% with respect to the building’s useful area allowed an energy saving of around 75% during winter. The results confirm the large potential of the solar building design to reach significant levels of energy saving, and the comparison of solar and conventional buildings in terms of natural gas consumption confirms the magnitude of such a potential.
{"title":"Energy Use of Buildings in Central Argentina","authors":"C. Filippín","doi":"10.1177/1744259105051798","DOIUrl":"https://doi.org/10.1177/1744259105051798","url":null,"abstract":"The present work analyzes the consumption of energy of three typologically and technologically different buildings, and its interaction with dimensional, morphological, and thermal indicators. The comparison of heat energy consumed by the conventional and the solar buildings (individual and apartments) allows the evaluation of the energy saved through the use of passive solar techniques and thermal envelopes. The study buildings are located in Santa Rosa (capital of the province of La Pampa) in Argentina. The latitudinal variation of degree days oscillates between 1300 and 1600 C to the north and the south, respectively. The results show the high correlation between the energy consumption and the energy loss through the building’s envelope. In buildings with conventional technology, the envelope (without insulation) reaches a G value of 4.13 W/m3 C, higher than the admissible maximum value stipulated by the N. IRAM 11604 for the study region. The technologically optimized construction through the use of an energy-efficient envelope, a carpentry with double glazing, and a collecting area of 12% with respect to the building’s useful area allowed an energy saving of around 75% during winter. The results confirm the large potential of the solar building design to reach significant levels of energy saving, and the comparison of solar and conventional buildings in terms of natural gas consumption confirms the magnitude of such a potential.","PeriodicalId":435154,"journal":{"name":"Journal of Thermal Envelope and Building Science","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115959019","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2005-07-01DOI: 10.1177/1744259105055898
Mark Bomberg
This issue marks the 29th year of this Journal and its name-change to Journal of Building Physics. Having been first, a member of the Journal editorial board, then its associated editor, and finally its editor-in-chief for 23 years out of 28 years, it is at present my privilege to share with you a bit of the Journal history. The Journal was initiated in response to the energy crises of the 1970s as the Journal of Thermal Insulation. The readership was primarily industrial and the published material oscillated between technical and practical information e.g., news from Washington. By the end of the 1980s, people of North America forgot the energy conservation and the Journal readership started to shrink. Therefore, when the previous editor retired, I was given the job to rebuild the Journal and its readership. The only constraint imposed on me by the publisher was to retain part of the title so that there would be no need to obtain a new mailing permission from the US Post Office. For this reason, the Journal’s scope was changed and the name became Journal of Thermal Insulation and Building Envelope. As buildings were the main area of thermal considerations, this title was a step forward. Yet, thermal considerations alone were insufficient to address the building envelope as a system. In one of the popular articles, my colleague and I wrote:
这一期标志着本刊创刊29年，并更名为《建筑物理学报》。首先，我是《华尔街日报》编辑委员会的一员，然后是它的联合编辑，最后是它28年中的23年的总编辑，现在我很荣幸与你们分享一点《华尔街日报》的历史。该杂志的创刊是为了应对20世纪70年代的能源危机，当时名为《绝热杂志》(Journal of Thermal Insulation)。读者主要是工业人士，出版的材料在技术和实用信息之间摇摆不定，例如来自华盛顿的新闻。到20世纪80年代末，北美人忘记了节能，《华尔街日报》的读者群开始萎缩。因此，在前任编辑退休后，我受命重建《华尔街日报》及其读者。出版商对我施加的唯一限制是保留部分标题，这样就不需要从美国邮局获得新的邮寄许可。因此，该杂志的范围被改变，并更名为《保温与建筑围护结构杂志》。由于建筑是热因素考虑的主要领域，这个标题是向前迈出的一步。然而，仅仅考虑热因素不足以解决建筑围护结构作为一个系统的问题。在其中一篇很受欢迎的文章中，我和同事写道:
{"title":"Letter From The Editor","authors":"Mark Bomberg","doi":"10.1177/1744259105055898","DOIUrl":"https://doi.org/10.1177/1744259105055898","url":null,"abstract":"This issue marks the 29th year of this Journal and its name-change to Journal of Building Physics. Having been first, a member of the Journal editorial board, then its associated editor, and finally its editor-in-chief for 23 years out of 28 years, it is at present my privilege to share with you a bit of the Journal history. The Journal was initiated in response to the energy crises of the 1970s as the Journal of Thermal Insulation. The readership was primarily industrial and the published material oscillated between technical and practical information e.g., news from Washington. By the end of the 1980s, people of North America forgot the energy conservation and the Journal readership started to shrink. Therefore, when the previous editor retired, I was given the job to rebuild the Journal and its readership. The only constraint imposed on me by the publisher was to retain part of the title so that there would be no need to obtain a new mailing permission from the US Post Office. For this reason, the Journal’s scope was changed and the name became Journal of Thermal Insulation and Building Envelope. As buildings were the main area of thermal considerations, this title was a step forward. Yet, thermal considerations alone were insufficient to address the building envelope as a system. In one of the popular articles, my colleague and I wrote:","PeriodicalId":435154,"journal":{"name":"Journal of Thermal Envelope and Building Science","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125540747","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2005-07-01DOI: 10.1177/1744259105051796
J. Rantala
In this article, the thermal behavior of a slab-on-ground structure with floor heating, and the interaction between a semidetached reference building and the subsoil are studied using field experiments and numerical simulations. The slab structure and its surroundings are modeled with a two-dimensional finite element model in both transient and static state conditions. According to the results, a simplified method to estimate the periodic temperature distribution at a building cross section underneath a slab-on-ground structure is presented. The method is based on temperature weighting factors of the three surrounding boundary temperatures: the external, the internal, and the subsoil temperature. The factors are determined using thermal resistances of the structural and soil layers separating the location of interest and the individual boundary temperature.
{"title":"Estimation of the Mean Temperature Distribution Underneath a Slab-on-ground Structure","authors":"J. Rantala","doi":"10.1177/1744259105051796","DOIUrl":"https://doi.org/10.1177/1744259105051796","url":null,"abstract":"In this article, the thermal behavior of a slab-on-ground structure with floor heating, and the interaction between a semidetached reference building and the subsoil are studied using field experiments and numerical simulations. The slab structure and its surroundings are modeled with a two-dimensional finite element model in both transient and static state conditions. According to the results, a simplified method to estimate the periodic temperature distribution at a building cross section underneath a slab-on-ground structure is presented. The method is based on temperature weighting factors of the three surrounding boundary temperatures: the external, the internal, and the subsoil temperature. The factors are determined using thermal resistances of the structural and soil layers separating the location of interest and the individual boundary temperature.","PeriodicalId":435154,"journal":{"name":"Journal of Thermal Envelope and Building Science","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123354011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2005-07-01DOI: 10.1177/1744259105051799
H. Abaza
Traditionally, attic space in buildings is perceived as a source of nuisance. In winter, moisture condensation on the attic ceiling encourages mildew growth. In summer, the heat buildup in the attic space increases the cooling load. However, if the attic is integrated in a holistic design and control strategy, it can function as a solar energy collector, a heat exchanger, and a desiccant. This research investigates energy saving by optimizing direct and indirect ventilation through the attic to precool buildings and to reduce humidity. The proposed energy saving strategies are examined in a double story house with an attic. The house is located in a moderate-humid climate. The built-up heat in the attic space and outside air ventilation is used to dry up roof construction materials during the day. When outside air cools down during the night but maintains high humidity, the indoor air is circulated through the attic space. The attic construction materials absorb moisture from the indoor air. Thus, indoor air loses both heat and moisture. EnergyPlus Simulation software was used to simulate these cooling and dehumidification strategies. The simulation results show a significant passive cooling and dehumidification in the building.
{"title":"Utilizing Latent Building Thermal Mass for Dehumidification","authors":"H. Abaza","doi":"10.1177/1744259105051799","DOIUrl":"https://doi.org/10.1177/1744259105051799","url":null,"abstract":"Traditionally, attic space in buildings is perceived as a source of nuisance. In winter, moisture condensation on the attic ceiling encourages mildew growth. In summer, the heat buildup in the attic space increases the cooling load. However, if the attic is integrated in a holistic design and control strategy, it can function as a solar energy collector, a heat exchanger, and a desiccant. This research investigates energy saving by optimizing direct and indirect ventilation through the attic to precool buildings and to reduce humidity. The proposed energy saving strategies are examined in a double story house with an attic. The house is located in a moderate-humid climate. The built-up heat in the attic space and outside air ventilation is used to dry up roof construction materials during the day. When outside air cools down during the night but maintains high humidity, the indoor air is circulated through the attic space. The attic construction materials absorb moisture from the indoor air. Thus, indoor air loses both heat and moisture. EnergyPlus Simulation software was used to simulate these cooling and dehumidification strategies. The simulation results show a significant passive cooling and dehumidification in the building.","PeriodicalId":435154,"journal":{"name":"Journal of Thermal Envelope and Building Science","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134210730","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2005-07-01DOI: 10.1177/1744259105053280
A. Hamilton, C. Hall
A hydrated calcium silicate insulation board was one of three construction materials used in the round-robin study of hygric properties carried out in the HAMSTAD project (Roels, S., Carmeliet, J., Hens, H., Adan, O., Brocken, H., Cerny, R., Pavlik, Z., Hall, C., Kumaran, K., Pel, L. and Plagge, R. (2004). Interlaboratory Comparison of Hygric Properties of Porous Building Materials, Journal of Thermal Envelope and Building Science, 27: 307-325). We report here the results of a physicochemical examination of this material. Analysis by synchrotron X-ray diffraction and nuclear magnetic resonance show that the mineralogical composition is essentially pure xonotlite. Bulk density and pore size distribution were obtained by mercury intrusion porosimetry and helium pycnometry; microstructural fabric was observed by high and low resolution electron microscopy; and organic content measured by Carbon-Hydrogen-Nitrogen (CHN) chemical analysis.
{"title":"Physicochemical Characterization of a Hydrated Calcium Silicate Board Material","authors":"A. Hamilton, C. Hall","doi":"10.1177/1744259105053280","DOIUrl":"https://doi.org/10.1177/1744259105053280","url":null,"abstract":"A hydrated calcium silicate insulation board was one of three construction materials used in the round-robin study of hygric properties carried out in the HAMSTAD project (Roels, S., Carmeliet, J., Hens, H., Adan, O., Brocken, H., Cerny, R., Pavlik, Z., Hall, C., Kumaran, K., Pel, L. and Plagge, R. (2004). Interlaboratory Comparison of Hygric Properties of Porous Building Materials, Journal of Thermal Envelope and Building Science, 27: 307-325). We report here the results of a physicochemical examination of this material. Analysis by synchrotron X-ray diffraction and nuclear magnetic resonance show that the mineralogical composition is essentially pure xonotlite. Bulk density and pore size distribution were obtained by mercury intrusion porosimetry and helium pycnometry; microstructural fabric was observed by high and low resolution electron microscopy; and organic content measured by Carbon-Hydrogen-Nitrogen (CHN) chemical analysis.","PeriodicalId":435154,"journal":{"name":"Journal of Thermal Envelope and Building Science","volume":"121 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124172605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2005-07-01DOI: 10.1177/1744259105051795
Z. Pavlík, Milena Jiřičková, J. Pavlík, R. Černý
An interior thermal insulation system based on hydrophilic mineral wool is presented in this paper. Basic thermal and hygric parameters of the applied materials are given. The design and development of the thermal insulation system including its verification in semiscale experiments are described. Finally, an example of the application of the designed system in the reconstruction of a historical building in Prague is shown, and the results of in situ experiments are presented.
{"title":"Interior Thermal Insulation System Based on Hydrophilic Mineral Wool","authors":"Z. Pavlík, Milena Jiřičková, J. Pavlík, R. Černý","doi":"10.1177/1744259105051795","DOIUrl":"https://doi.org/10.1177/1744259105051795","url":null,"abstract":"An interior thermal insulation system based on hydrophilic mineral wool is presented in this paper. Basic thermal and hygric parameters of the applied materials are given. The design and development of the thermal insulation system including its verification in semiscale experiments are described. Finally, an example of the application of the designed system in the reconstruction of a historical building in Prague is shown, and the results of in situ experiments are presented.","PeriodicalId":435154,"journal":{"name":"Journal of Thermal Envelope and Building Science","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116827393","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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