Research Summit

Sunday, June 25, 2017

8:00 AM-9:00 AM
Workshop 6
Science and Technology for the Built Environment Writer's Workshop: Authoring Research Papers with Impact

Research Summit
202AB (Long Beach Convention)
Chair: Reinhard Radermacher, Ph.D., University of Maryland
Sponsor: Publication and Education Council
Hosted by the editorial staff and publishers of the ASHRAE archival journal, Science and Technology for the Built Environment, this workshop aims to teach authors of technical and research papers to write with maximum impact in a manner to maximize citations.

1  Writing for Maximum Impact

Alexa Flood, Taylor and Francis
Finally getting your work on paper is only half the battle. Sure, having a published work is good to have on your resume, but having impactful work can make a career. Learn how to write research papers in a way that will garner citations, and get maximum mileage out of your work. This workshop touches upon the importance of selecting the best journal match for your work, how to maximize your article for hits from search engines and when to publish using open access. It also explains how to better understand writing about both methodology and research findings.

2  Writing Research Papers that Get Published.

Alexa Flood, Taylor and Francis
Mary Baugher, University of Maryland
Avoid the pitfalls that plague many authors who submit papers to research journals. Learn how to write a compelling abstract, the importance of proper formatting and grammar, surviving the plagiarism cross-check and addressing reviewers' comments in a productive way.

1:30 PM-3:00 PM
Seminar 12
An Interdisciplinary Framework and Survey for Investigating Cross-country Occupant Behavior in Buildings

Research Summit
201A (Long Beach Convention)
Chair: Tianzhen Hong, Ph.D., LBNL
Technical Committee: MTG.OBB Occupant Behavior in Buildings
Occupant behavior in buildings is a key driver of energy performance and occupant comfort. However it is less understood due to its stochastics, diversity and lack of data. Obtaining occupant behavior data through sensing and monitoring takes time and resources and is limited to a small scale (small number of buildings or shorter time periods). This seminar introduces an interdisciplinary framework and questionnaire design to survey a large number of occupants in various countries on their occupancy and interactions with building systems. Survey results are analyzed to understand occupant behavior and used to improve energy modeling, building design and controls.

1  An Interdisciplinary Research Approach to Energy-Related Behavior in Buildings

Tianzhen Hong, Ph.D., LBNL
An interdisciplinary and international survey is developed for systematic identification of environmental, cognitive and behavioral factors (and their interrelations) influencing control options in office buildings. This study is conducted through the development of questions directed at attitude, subjective norms, perceived control and other related concepts as organized in the Social Cognitive Theory and the Theory of Planned Behavior. The survey is distributed to 14 Universities among six countries in four continents (America, Asia, Europe, Australia). The questionnaire survey assesses office configuration type, thermal comfort, social norms, attitudes toward energy saving, demographics, etc.

2  Performance Analysis of Occupant Behavior Questionnaire Survey Data in China’s Residential Buildings

Da Yan, Tsinghua University
This study presents a new method to summarize typical behavior patterns in residential buildings in China regarding air-conditioning use. A large-scale questionnaire survey was designed and conducted to get behavior patterns, which were then used in energy simulation. Based on the energy consumption, the behavior patterns were classified into categories and a typical pattern was extracted from each category. Finally, the typical behavior patterns were validated by the distribution testing of building energy consumption. These typical behavior patterns could be used to estimate the energy consumption with different composition of occupants and evaluate the energy saving potential of different technologies.

3  Insights on Social Psychological and Contextual Factors Affecting Energy Behaviors and Conservation Intentions in Residential and Commercial Buildings

Chien-fei Chen, Ph.D., University of Tennessee
The issues of energy consumption and occupant behaviors should not be an individualistic focus, assuming that people will control their behaviors and make rational choices. These complex issues extend to organizations and other social contexts as well. This presentation presents the empirical findings regarding the social-psychological and demographic variables affecting energy saving behaviors in both commercial and residential settings. In addition, the influence of social-psychological factors on the U.S. residents’ public acceptance of smart meters and demand response programs is presented. Importantly, this presentation discusses several important social science theories in measuring energy saving behaviors and intentions.

4  Lightweight and Adaptive Building Simulation (LABS) Framework for Integrated Building Energy and Occupant Behavior Analysis

Carol Menassa, Ph.D., University of Michigan
Traditional energy simulation tools only consider fixed energy-related schedules and do not incorporate real time effects of occupants’ behavioral patterns in energy simulation. In this talk, an inter-disciplinary, Adaptive Building Simulation framework collecting actual building indoor environment data (through sensors) and human physiological and behavioral data (through wearable devices, polling apps, and surveys) and incorporate these data into a coupled and distributed software simulation system is presented. A case study performed using this framework measured occupants’ thermal comfort related actions and its effects on energy use in buildings and the results indicated energy savings by influencing the occupant behavior.

Monday, June 26, 2017

8:00 AM-9:30 AM
Conference Paper Session 6
Utilizing Predictive Occupant Behavior and Counting to Better Determine Hot Water and Heating Demand Loads and IAQ

Research Summit
101A (Long Beach Convention)
Chair: Vikrant Aute, Ph.D., University of Maryland
Accurate predictive occupancy data is crucial when using occupancy as one of the data points in energy modeling for buildings and for use by building operators to optimize day-to-day and hour-to-hour operations. This session provides information on why occupancy is important in predicting energy loads and different methods of determining occupancy which can then be used to develop more accurate modeling formats.

1  Sizing Methodology for Domestic How Water Systems Based on Accurate Occupant Behavior (LB-17-C019)

Jean Rouleau, Université Laval
Louis Gosselin, Ph.D., P.E., Université Laval
Alfonso Ramallo-Gonzalez, University of Bath
As households are being required to be more energy efficient over the years, the energy consumption for producing domestic hot water (DHW) is receiving increasing attention. Hence, the design of hot water systems is becoming more important for a holistic approach to energy conservation. Current sizing for these systems is often based on estimations that obey empirical rules. An inaccurate evaluation of the hot water demand could lead to a poor hot water system design that is either undersized or oversized. This either means an insufficient amount of hot water available to occupants or an overpriced system that never gets to be used at its optimal operational point. Therefore, it is crucial to properly evaluate the hot water demand when designing hot water systems for dwellings. This paper discusses a stochastic tool constructed to generate hot water demand profiles for residential buildings using a 10-minute resolution.

2  Modelling Residential Building Stock Heating Load Demand, Integration of Occupancy Models (LB-17-C020)

Giuseppina Buttitta, University College of Dublin (UCD)
William Turner, University College of Dublin (UCD)
Donal Finn, University College of Dublin (UCD)
Oliver Neu, University College of Dublin (UCD)
In the residential housing sector, a strong correlation exists between occupant behavior and space heating energy use. In particular, the occupancy scenario (e.g., daytime absence, morning presence, etc.) has a significant influence on residential heating load profiles, as well as on cumulative heating energy consumption. The share of households characterized by different occupancy scenarios is a crucial assumption in order to accurately model the residential building stock heating demand. The choice of the most suitable occupancy model is a trade-off between complexity, accuracy and computational effort, as well as model integration at large scale. This paper analyzes the combined influence of different occupancy assumptions and different occupancy models on the housing heating loads for a UK building stock sample.

3  Development and Comparison of Four Different Occupancy Counting and Estimation Solutions (LB-17-C021)

Junjing Yang, Ph.D., National University of Singapore
Alexandros Pantazaras, National University of Singapore
Arun Kumar Chandran, Ph.D., National University of Singapore
Siew Eang Lee, Ph.D., National University of Singapore
Mat Santamouris, Ph.D., UNSW
Kwok Wai Tham, Ph.D., National University of Singapore
Lawrence Wong, National University of Singapore
Occupancy information is important to building facility managers in terms of predictive control, safety, as well as the indoor environment quality. Previous works have addressed different occupancy counting and estimation solutions in different buildings or spaces. In this paper, we build up a test bed using the existing University lecture theatres to develop and compare four different occupancy counting methodologies. The paper addresses the occupancy counting challenge in educational building deployment scenario with large groups of people entering and leaving. Experiments have been conducted for three months with every 5 minutes data reporting interval. The results will be compared with the ground truth of real time pictures.

4  A Low-Cost Bi-Directional People Counter for Building Control (LB-17-C022)

Peng Yin, Ph.D., University of Louisiana at Lafayette
Xiaoguang Xiao, University of Louisiana at Lafayette
Accurate occupancy information is crucial to the demand response HVAC control. However, traditional passive infrared (PIR) occupancy sensors can only provide binary results of occupant presence without detecting the number of people in a room. In this paper, a low-cost bi-directional people counter was developed to determine the occupant number in a single entry room by detecting people entering or leaving the room. The developed people counter was designed to be installed in the doorway with a capability of recording the time and the number of people entering, leaving, and staying in the room separately. A field evaluation of the developed people counter was conducted in a single entry student lounge in a period of two weeks.

9:45 AM-10:45 AM
Seminar 24
As Cool as it Sounds: Strategies to Mitigate the Acoustic Challenges of Radiantly-Cooled Environments

Research Summit
103AB (Long Beach Convention)
Chair: Devin Abellon, P.E., Uponor
Technical Committee: 6.5 Radiant Heating and Cooling
As building owners answer the call to establish more stringent energy-use standards for their new construction projects, design teams are looking beyond traditional HVAC solutions to systems such as radiant cooling. A radiant cooling design embodies the integration of architectural design and HVAC systems design with overall energy efficiency and comfort in mind. However, because these systems rely on hard exposed surfaces for heat exchange, designers are often faced with acoustical challenges. This session explores current research on the necessary balance between performance and environmental sound quality and explores different strategies used to create optimally comfortable spaces.

1  Effect of Acoustical Coverage and Air Movement on the Cooling Capacity of a Radiant Chilled Ceiling

Fred S. Bauman, P.E., Center for the Built Environment (CBE), University of California
Radiant slab systems have the potential to achieve significant energy savings. However, when applied in the ceiling, the exposed concrete may create acoustical challenges due to the high reflectivity of the hard surface. The purpose of this study is to conduct laboratory experiments for an office with varying coverage of free-hanging acoustic clouds and fans. Different fans configuration were tested against a reference case with no air movement. The tests conducted showed that the cooling capacity decreases as acoustical coverage increases. Adding fans brought an increase of the cooling capacity of 22-26% depending on fan configuration and acoustical coverage.

2  Effects of Horizontal and Vertical Sound Absorbers on the Cooling Capacity of Thermally Activated Building Systems (TABS)

Marcos Dominguez, Technical University of Denmark
As part of this study, the effects of horizontal and vertical free hanging sound absorbers on the cooling performance of TABS and on the occupants thermal comfort were measured in a full-scale TABS laboratory environment. The investigations have also been supported with Computational Fluid Dynamics (CFD) simulations to study the nature of the heat exchange between the TABS and the room when the sound absorbers are present.

Wednesday, June 28, 2017

9:45 AM-10:45 AM
Seminar 55
Research Updates on Radiant Cooling and Heating Systems

Research Summit
202AB (Long Beach Convention)
Chair: Paul Raftery, Ph.D., Center for the Built Environment
Technical Committee: 6.5 Radiant Heating and Cooling
Radiant cooling and heating systems are gaining in popularity and applications as they have the potential to provide energy efficiency and thermal comfort benefits. However, there are many unanswered questions regarding appropriate best practice for design, sizing and control. This seminar reports on recent research on the topic, including the effects of direct solar on radiant chilled floors and the effects of night-time precooling of thermally massive radiant systems.

1  New Method for the Design of Radiant Floor Cooling Systems with Direct Solar Radiation

Jingjuan Feng, Ph.D., Taylor Engineering
This presentation explains a new method for designing radiant floor cooling systems that accounts for the effects of direct solar radiation.

2  Design Cooling Load Calculations Comparison between TABS and Air Systems

Eleftherios Bourdakis, Technical University of Denmark
This presentation compares the differences in cooling loads between high and low thermal mass radiant systems and all-air systems.

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