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11 – 20 of 742John A. Bryant and Kimberly Carlson
Engineers at the Energy Systems Laboratory at Texas A&M University conducted short term energy metering studies at a complex of offices in northern Texas and several buildings on…
Abstract
Engineers at the Energy Systems Laboratory at Texas A&M University conducted short term energy metering studies at a complex of offices in northern Texas and several buildings on the Texas A&M University campus. These studies typically consisted of installing electrical metering at the whole building level and included sub‐metering of selected circuits when possible. A staged shut‐down sequence was performed for all lighting, fan, and mechanical systems of interest in the facility. Lighting system load verification was the primary goal. The study was a follow‐up to an earlier lighting study that had been conducted by the campus energy office. Base electrical load data were also determined from these tests, and in both studies significant “base” electrical loads were found. This paper presents results of these studies and suggests that the method is attractive to both contractors and facility energy managers as well.
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Samantha Searle, Malcolm Wolski, Natasha Simons and Joanna Richardson
The purpose of this paper is to describe the evolution to date and future directions in research data policy, infrastructure, skills development and advisory services in an…
Abstract
Purpose
The purpose of this paper is to describe the evolution to date and future directions in research data policy, infrastructure, skills development and advisory services in an Australian university, with a focus on the role of librarians.
Design/methodology/approach
The authors have been involved in the development of research data services at Griffith, and the case study presents observations and reflections arising from their first-hand experiences.
Findings
Griffith University’s organisational structure and “whole-of-enterprise” approach has facilitated service development to support research data. Fostering strong national partnerships has also accelerated development of institutional capability. Policies and strategies are supported by pragmatic best practice guidelines aimed directly at researchers. Iterative software development and a commitment to well-supported enterprise infrastructure enable the provision of a range of data management solutions. Training programs, repository support and data planning services are still relatively immature. Griffith recognises that information services staff (including librarians) will need more opportunities to develop knowledge and skills to support these services as they evolve.
Originality/value
This case study provides examples of library-led and library-supported activities that could be used for comparative purposes by other libraries. At the same time, it provides a critical perspective by contrasting areas of good practice within the University with those of less satisfactory progress. While other institutions may have different constraints or opportunities, some of the major concepts within this paper may prove useful to advance the development of research data capability and capacity across the library profession.
N. Kouloumbi, G. Batis, N. Kioupis, N. Kioupis and P. Asteridis
The aim of this fieldwork was the study of the effect of 50Hz AC, induced by high‐voltage power lines, on the cathodic protection system of a natural gas pipeline. The…
Abstract
The aim of this fieldwork was the study of the effect of 50Hz AC, induced by high‐voltage power lines, on the cathodic protection system of a natural gas pipeline. The effectiveness of cathodic protection was checked through in situ long‐term monitoring and analysis of pipeline electrical parameters. The results gave an insight into the problems of the cathodic protection system operation, caused by AC interference. An AC and DC potential interdependence was observed, that previously has hardly been reported, and was scrutinized in relation to cathodically protected pipelines. The effects of the AC‐interference and low frequency DC potential fluctuations, as well as the potential deviations from the protection potential, are examined. These phenomena are associated with corrosion susceptibility and difficulties in obtaining reliable cathodic protection measurements.
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Hilmi Kuscu, Ismail Becenen and Mumin Sahin
The purpose of this paper is to evaluate temperature and properties at interface of AISI 1040 steels joined by friction welding.
Abstract
Purpose
The purpose of this paper is to evaluate temperature and properties at interface of AISI 1040 steels joined by friction welding.
Design/methodology/approach
In this study, AISI 1040 medium carbon steel was used in the experiments. Firstly, optimum parameters of the friction welding were obtained by using a statistical analysis. Later, the microstructures of the heat‐affected zone are presented along with micro hardness profiles for the joints. Then, the temperature distributions are experimentally obtained in the interface of the joints that is formed during the friction welding of 1040 steels with the same geometry. This study was carried out by using thermocouples at different locations of the joint‐interface. The results obtained were compared with previous studies and some comments were made about them.
Findings
It was discovered that temperature had a substantial effect on the mechanical and metallurgical properties of the material.
Research limitations/implications
The maximum temperature in the joint during frictional heating depends not only on the pressure, but also on the temperature gradient which depends on the rotational speed in particular. It is important to note that the measurement process was successfully accomplished in this study although it was particularly difficult to obtain temperature due to the large deformations at the interface. Future work could be concentrated on the temperature measurement of the joined materials.
Practical implications
Temperature is one of the most important of all physical quantities in industry. Its measurement plays a key part in industrial quality and process control, in the efficient use of energy and other resources, in condition monitoring and in health and safety. This paper contributes to the literature about temperature measurement in welded, brazed and soldered materials.
Originality/value
The main value of this paper is to contribute and fulfill the influence of the interface temperature on properties in welding of various materials that is being studied so far in the literature.
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Michael Roskams and Barry Haynes
Advancements in wireless sensor technology and building modelling techniques have enabled facilities managers to understand the environmental performance of the workplace in more…
Abstract
Purpose
Advancements in wireless sensor technology and building modelling techniques have enabled facilities managers to understand the environmental performance of the workplace in more depth than ever before. However, it is unclear to what extent this data can be used to predict subjective environmental comfort. This study aims to pilot test a methodological framework for integrating real-time environmental data with subjective ratings of environmental comfort.
Design/methodology/approach
An open-plan office was fitted with environmental sensors to measure key indoor environmental quality parameters (carbon dioxide, temperature, humidity, illumination and sound pressure level). Additionally, building modelling techniques were used to calculate two spatial metrics (“workspace integration” and workspace density) for each workspace within the study area. In total, 15 employees were repeatedly sampled across an 11-day study period, providing 78 momentary assessments of environmental comfort. Multilevel models were used to explore the extent to which the objective environmental data predicted subjective environmental comfort.
Findings
Higher carbon dioxide levels were associated with more negative ratings of air quality, higher “workspace integration” was associated with higher levels of distractions, and higher workspace density was associated with lower levels of social interactions.
Originality/value
To our knowledge, this is the first field study to directly explore the relationship between physical environment data collected using wireless sensors and subjective ratings of environmental comfort. The study provides proof-of-concept for a methodological framework for the integration of building analytics and human analytics.
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Ilyas Omar and Selbourne Makhlomo
This paper reviews energy alternatives for groundwater pumping in remote, rural areas which are not grid connected or where grid extension costs are prohibitively high. The…
Abstract
This paper reviews energy alternatives for groundwater pumping in remote, rural areas which are not grid connected or where grid extension costs are prohibitively high. The applicability of photovoltaic (PV) pumping under certain conditions is discussed, using examples of in‐service fieldwork results, and experimental results of a laboratory PV pumping rig with remote monitoring capabilities using telemetry. The outcome of the survey and analysis shows that PV pumping can be competitive with other technologies under specific head and flow conditions, although the socio‐institutional implementation strategies are crucial to the techno‐economic success of actual pumping schemes.
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David Liptrot and Gino Palarchio
Provides case study information regarding Dofasco, Inc., Canada’s second largest steel manufacturer. Notes the economic difficulties of the late 1980s and 1990s, brought on by the…
Abstract
Provides case study information regarding Dofasco, Inc., Canada’s second largest steel manufacturer. Notes the economic difficulties of the late 1980s and 1990s, brought on by the effects of globalization. Reports how the company perceived equipment reliability as being key to improving product quality, production output, costs and shareholder return. Focuses on the project initiated to research, develop and implement the most advanced maintenance practices and information technologies to achieve maximum equipment reliability. Reports on the successful outcomes of this project.
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The smart open house provides optimal adaptability using sensing, operating, information, and communications technology, in conjunction with open building in-filled components, to…
Abstract
The smart open house provides optimal adaptability using sensing, operating, information, and communications technology, in conjunction with open building in-filled components, to perceive user needs and environmental changes, and thereby meet the needs for sustainability and a healthy living environment. These needs are particularly pressing in view of the aged society that will emerge in Taiwan after 2020. Based on the smart open house hypothesis, this study proposes using agent-based smart skins in a smart open house, where an agent-based smart skin is embedded in a lifetime home (or ageless home) with an open system construction. The agent-based smart skin operating mechanism employs fuzzy logic inference and neuro-fuzzy learning to process environmental information from sensing devices and drive skin elements, achieving adaptive action, meeting residents' lifetime use needs, and offering a user experience-oriented smart care capability.
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Funda Gençer and İlker Karadağ
The study aims to analyze both thermal and wind comfort conditions of a historical mosque's interior and outdoor spaces for the planning of further conservation decisions.
Abstract
Purpose
The study aims to analyze both thermal and wind comfort conditions of a historical mosque's interior and outdoor spaces for the planning of further conservation decisions.
Design/methodology/approach
The method is composed of two steps. First, thermal comfort analyses are conducted via Design-Builder Software. The predicted mean vote (PMV) and predicted percentage of dissatisfied indices were calculated and evaluated using the ASHRAE 55–2010 standard. Thermal comfort conditions are analyzed with the proposed three operations. Second, wind comfort analyses are conducted via computational fluid dynamics (CFD) software. Outdoor thermal comfort conditions are predicted by air temperature, mean radiant temperature, wind speed and relative humidity.
Findings
The (PMV) in the harim was calculated as −1.83 (cool) which corresponds to a predicted percentage of dissatisfaction (PPD) equal to 68.54%. Thermal comfort was provided by daytime and continuous operations; however, intermittent operations did not provide thermal comfort. The wind velocities around the mosque are well below the 5 m/s limit value for standing defined by NEN 8100 wind nuisance standard. Moreover, the limit value of 2.5 m/s for sitting was also satisfied with more than 80% of the semi-enclosed area around the entrance of the mosque. Last comer's hall remains in a slight cold stress range, the rest of the areas have no thermal stress.
Originality/value
This two-stage study creates a base for further improvements to provide comfort conditions in a historical building without interfering with its original features.
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