Advanced control techniques may be used to establish a virtual power plant to regulate the operation of electric water heaters, which may be regarded as a "uni-directional battery" and a major component of a hybrid residential energy storage system. In order to estimate the potential of regulating water heaters at the aggregated level, factors including user behavior, number of water heaters, and types of water heaters must be considered. This study develops generic water heater load curves based on the data retrieved from large experimental projects for resistive electric water heaters (EWHs) and heat pump water heaters (HPWHs). A community-level digital twin with scalability has been developed to capture the aggregated hot water flow and average hot temperature in the tank. The results in this paper also include the "energy take" in line with the CTA-2045 standard and Energy Star specification. The data from the experiments demonstrated that changing from an EWH to an HPWH reduces electricity usage by approximately 70%. The case study showed that daily electricity usage could be shifted by approximately 14% and 17% by EWH and HPWHs, respectively, compared to their corresponding average power. Another case study showed that both EHWs and HPWHs, coordinated with PV to reduce morning and evening peaks, could shift approximately 22% of the daily electricity.
This work in progress describes an effort to identify at-risk freshmen and provide enhanced advising support through intrusive academic advising interventions. In the report Rising Above the Gathering Storm: Energizing and Employing America for a Brighter Economic Future, the National Academy of Sciences, National Academy of Engineering, and Institute of Medicine of the National Academies identified the key roles innovation and competitiveness play in ensuring the prosperity of the United States (U.S.) economy within the world. Both innovation and competitiveness depend upon the knowledge capital of highly qualified and diverse college graduates to work in STEM fields. However, the U.S. education system is failing to produce sufficient college graduates to fulfill the emerging, rapidly growing job demands within STEM fields.
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