Performance Data from the NIST Net-Zero Energy Residential Test Facility

Abstract

SummaryData were collected over two separate year-long test periods at the Net-Zero Energy Residential Test Facility, a laboratory designed to evaluate a variety of technologies and operational strategies that lead to energy efficient houses with comfortable and healthful indoor environments. In a net-zero energy building, all energy consumption over the course of a year is offset by on-site renewable energy production; this facility attempts to meet that goal through use of a photovoltaic array installed on the roof. Data are presented for one-year test periods over which the research team examined whether the facility would reach net-zero status. In both years, the house was operated in an all-electric configuration, with slight modifications made in the second year related to control schemes and equipment selection. A virtual family of four was simulated to carry out the operations that would typically occur in a home (e.g., appliance usage, lighting usage, hot water usage). Data are being released for the second year of operation at the time of publication of this document, with an expectation that data from the first year will be released at a later date.Data are captured as a time series where one data element is acquired every minute from each of 379 parallel data channels; these channels record a variety of quantities that are critical to evaluating the performance of the building. Among those quantities are: room temperatures, room relative humidities, electricity consumption by various devices, photovoltaic energy generation, outdoor conditions, operational status of devices, water temperatures, water flow rates, and airflow rates. Specifications are provided to fully describe the facility and its components, and an accompanying link provides design drawings and a data dictionary with key metadata for each of the channels.

Efficient temporal pattern mining in big time series using mutual information

“…Datasets: We use three smart energy (SE) datasets, NIST [60], UKDALE [61], and DataPort [62] that measure the energy consumption of electrical appliances in residential households. For the smart city (SC), we use weather and vehicle collision data obtained from NYC Open Data Portal [63].…”

Small Changes Yield Large Results at NIST's Net-Zero Energy Residential Test Facility

“…al [12]. Complete data from Year 2 are available at https://pages.nist.gov/netzero/ [22,23] Due to failures associated with the data acquisition system, four and five days of data were lost, respectively, during the first year and second years of operation. To compare the NZERTF’s second year energy performance to the first year on an equitable basis, the energy consumption and photovoltaic energy production values for months with missing data were prorated by taking the average daily values for the affected months and multiplying by the number of days in a full month.…”