Analysis on a net-zero energy renovation of a 1920s vintage home

Using Building Energy and Smart Thermostat Data to Evaluate Indoor Ultrafine Particle Source and Loss Processes in a Net-Zero Energy House

“…The Purdue ReNEWW House is equipped with a comprehensive data monitoring system that incorporates an extensive array of sensors and data acquisition (DAQ) units to monitor and record energy consumption/production and indoor environmental conditions throughout the home. 35 Equipment-level energy consumption is measured with 150-, 50-, and 20-A CT sensors at a 1 min time resolution. The CT sensors and DAQs are integrated with a cloud-based BEMS (SiteSage, Powerhouse Dynamics Inc.).…”

“…The ReNEWW House is located at Purdue University in West Lafayette, IN, U.S.A. The three-story detached home (266 m 2 total conditioned area) was built in 1928 and underwent a deep energy retrofit between 2014 and 2015, as described in detail elsewhere. ,,, The house was occupied by three adult residents during the campaign. The ReNEWW House is partitioned into a below-ground basement, which houses an air handling unit (AHU, Figure S2) and ERV (Figure S3); floor 1, which includes an open-concept kitchen equipped with all electrical appliances (Figure S4), including an electric induction cooktop, oven, toaster, microwave, and ductless range hood; and floor 2, which includes three bedrooms.…”

“…Smart building technology is becoming essential in the transition toward netzero energy buildings (NZEBs), 28−34 which integrate intelligent management of energy-efficient HVAC systems, electrical appliances, and lighting with on-site energy production. 30,35 However, indoor air quality field investigations in smart buildings, NZEBs, and similarly designed high-performance/ passive homes are limited. 13,33,36−41 Smart buildings and NZEBs are commonly retrofitted with smart meters, current transducer (CT) sensors, smart thermostats, and BEMS for real time monitoring of building-and appliance-level energy consumption and use profiles.…”

“…Smart buildings that incorporate Internet of Things (IoT)-enabled sensors and devices that are integrated with cloud-based building energy management systems (BEMS) can monitor HVAC systems and occupancy in real time, − providing a foundation for data-driven indoor air quality assessment and ventilation control. Smart building technology is becoming essential in the transition toward net-zero energy buildings (NZEBs), − which integrate intelligent management of energy-efficient HVAC systems, electrical appliances, and lighting with on-site energy production. , However, indoor air quality field investigations in smart buildings, NZEBs, and similarly designed high-performance/passive homes are limited. ,,− …”

“…Smart buildings and NZEBs are commonly retrofitted with smart meters, current transducer (CT) sensors, smart thermostats, and BEMS for real time monitoring of building- and appliance-level energy consumption and use profiles. ,,,− Such sensing and data management systems offer exciting possibilities for evaluating how HVAC systems and electrical appliances impact indoor air quality. Several studies have used CT sensors and smart thermostats for evaluating HVAC system runtime (fractional on-time). ,,, However, a comprehensive framework for using building energy and smart device data to characterize indoor air pollutant dynamics in smart homes is lacking.…”