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  1. Article ; Online: High resolution dataset from a net-zero home that demonstrates zero-carbon living and transportation capacity.

    Cui, Borui / Lee, Sangkeun / Im, Piljae / Koenig, Michael / Bhandari, Mahabir

    Data in brief

    2022  Volume 45, Page(s) 108703

    Abstract: This dataset includes high resolution, detailed end use data from a net-zero occupied home that demonstrates zero-carbon living and transportation capacity. The house is located in Davis, California, U.S., and the dataset includes full year data from ... ...

    Abstract This dataset includes high resolution, detailed end use data from a net-zero occupied home that demonstrates zero-carbon living and transportation capacity. The house is located in Davis, California, U.S., and the dataset includes full year data from 2020 with 1 minute time resolution. The data has been monitored with more than 230 sensors installed in the house, and there are total 332 channels available. The data includes detailed end use electricity data (e.g., HVAC system, lighting, plug load including major appliances), building's interior thermal conditions (e.g., indoor air temperatures in multiple rooms and relative humidity), HVAC system operation data (e.g., soil temperatures around ground bores and supply water temperatures), on-site power generation system data (e.g., PV power supply and PV surface temperatures) and etc. The original dataset from the house has been curated, and the data has been carefully reviewed for quality check. The data quality check revealed there are 156 minutes of data were missing in the month of April, and around 1,404 minutes of data was missing in August. The data gap was filled with linear interpolation in case the gap is less than continuous 6 hours. Otherwise, the data is filled with -9999. The data curation has been processed using the Tsdat framework (https://github.com/tsdat/tsdat). In addition, a semantic description for the dataset was generated by leveraging the Brick (https://brickschema.org/). The final curated and processed data as well as raw data are currently available through https://bbd.labworks.org/ds/bbd/hshus.
    Language English
    Publishing date 2022-10-26
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 2786545-9
    ISSN 2352-3409 ; 2352-3409
    ISSN (online) 2352-3409
    ISSN 2352-3409
    DOI 10.1016/j.dib.2022.108703
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Peak load reduction and load shaping in HVAC and refrigeration systems in commercial buildings by using a novel lightweight dynamic priority-based control strategy

    Winstead, Christopher / Bhandari, Mahabir / Nutaro, James / Kuruganti, Teja

    Elsevier Ltd Applied energy. 2020 Nov. 01, v. 277

    2020  

    Abstract: Reducing peak power demand in a building can reduce electricity expenses for the building owner and contribute to the efficiency and reliability of the electrical power grid. For the building owner, reduced expenses come from the reduction or elimination ...

    Abstract Reducing peak power demand in a building can reduce electricity expenses for the building owner and contribute to the efficiency and reliability of the electrical power grid. For the building owner, reduced expenses come from the reduction or elimination of peak power charges on electricity bills. For the power system operator, reducing peak power demand leads to a more predictable load profile and reduces stress on the electric grid system. We present a computationally inexpensive, dynamic, and retrofit-deployable control strategy to effect peak load reduction and load shaping. The effectiveness of the control strategy is examined in a simulation with 80 air-conditioning units and 40 refrigeration units. The results show that a peak demand reduction of 60 kW can be achieved relative to peak demand in a typical set point–based approach. The proposed strategy was deployed in a gymnasium building with four rooftop HVAC units, where it showed over 15% peak demand (kW) reduction savings while maintaining or lowering energy consumption (in kilowatt-hours) relative to the set point–based thermostat controls.
    Keywords air conditioning ; buildings ; electric power ; electricity ; energy ; heating systems ; refrigeration ; ventilation systems
    Language English
    Dates of publication 2020-1101
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 2000772-3
    ISSN 0306-2619
    ISSN 0306-2619
    DOI 10.1016/j.apenergy.2020.115543
    Database NAL-Catalogue (AGRICOLA)

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  3. Article: COVID-19 pandemic ramifications on residential Smart homes energy use load profiles.

    Chinthavali, Supriya / Tansakul, Varisara / Lee, Sangkeun / Whitehead, Matthew / Tabassum, Anika / Bhandari, Mahabir / Munk, Jeff / Zandi, Helia / Buckberry, Heather / Kuruganti, Teja / Hill, Justin / Cortner, Chase

    Energy and buildings

    2022  Volume 259, Page(s) 111847

    Abstract: The COVID-19 pandemic has significantly affected people's behavioral patterns and schedules because of stay-at-home orders and a reduction of social interactions. Therefore, the shape of electrical loads associated with residential buildings has also ... ...

    Abstract The COVID-19 pandemic has significantly affected people's behavioral patterns and schedules because of stay-at-home orders and a reduction of social interactions. Therefore, the shape of electrical loads associated with residential buildings has also changed. In this paper, we quantify the changes and perform a detailed analysis on how the load shapes have changed, and we make potential recommendations for utilities to handle peak load and demand response. Our analysis incorporates data from before and after the onset of the COVID-19 pandemic, from an Alabama Power Smart Neighborhood with energy-efficient/smart devices, using around 40 advanced metering infrastructure data points. This paper highlights the energy usage pattern changes between weekdays and weekends pre- and post-COVID-19 pandemic times. The weekend usage patterns look similar pre- and post-COVID-19 pandemic, but weekday patterns show significant changes. We also compare energy use of the Smart Neighborhood with a traditional neighborhood to better understand how energy-efficient/smart devices can provide energy savings, especially because of increased work-from-home situations. HVAC and water heating remain the largest consumers of electricity in residential homes, and our findings indicate an even further increase in energy use by these systems.
    Language English
    Publishing date 2022-01-10
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 1502295-x
    ISSN 0378-7788
    ISSN 0378-7788
    DOI 10.1016/j.enbuild.2022.111847
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Synthesis of Half-Sphere/Half-Funnel-Shaped Silica Structures by Reagent Localization and the Role of Water in Shape Control.

    Datskos, Panos / Polizos, Georgios / Cullen, David A / Bhandari, Mahabir / Sharma, Jaswinder

    Chemistry (Weinheim an der Bergstrasse, Germany)

    2016  Volume 22, Issue 52, Page(s) 18700–18704

    Abstract: Shape control of silica structures is demonstrated by localization of the reagents. A uniform dispersion of reagents provided straight silica rods, whereas localization of the reagents in the emulsion droplet periphery provided a new type of half-sphere/ ... ...

    Abstract Shape control of silica structures is demonstrated by localization of the reagents. A uniform dispersion of reagents provided straight silica rods, whereas localization of the reagents in the emulsion droplet periphery provided a new type of half-sphere/half-funnel structure. The effect of water concentration appeared to be related to the ease of diffusion of the silica precursor inside the emulsion droplet (i.e., the higher the water concentration, the lower the silica precursor diffusion).
    Language English
    Publishing date 2016-12-23
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1478547-x
    ISSN 1521-3765 ; 0947-6539
    ISSN (online) 1521-3765
    ISSN 0947-6539
    DOI 10.1002/chem.201604130
    Database MEDical Literature Analysis and Retrieval System OnLINE

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