Evaluation of the Demand Response Performance of Electric Water Heaters

Mayhorn, Ebony T.¹  Widder, Sarah H.¹  Parker, Steven A.¹  Pratt, Richard M.¹  Chassin, Forrest S.¹ 

[1] Pacific Northwest National Lab. (PNNL), Richland, WA (United States)

关键词: energy efficiency;    demand response;    heat pump water heater;   

DOI  :  10.2172/1177305
RP-ID  :  PNNL--23527
PID  :  OSTI ID: 1177305
Others  :  Other: BT0400000

美国|英语

来源: SciTech Connect

【 摘 要 】

The purpose of this project is to verify or refute many of the concerns raised by utilities regarding the ability of large tank HPWHs to perform DR by measuring the performance of HPWHs compared to ERWHs in providing DR services. perform DR by measuring the performance of HPWHs compared to ERWHs in providing DR services. This project was divided into three phases. Phase 1 consisted of week-long laboratory experiments designed to demonstrate technical feasibility of individual large-tank HPWHs in providing DR services compared to large-tank ERWHs. In Phase 2, the individual behaviors of the water heaters were then extrapolated to a population by first calibrating readily available water heater models developed in GridLAB-D simulation software to experimental results obtained in Phase 1. These models were used to simulate a population of water heaters and generate annual load profiles to assess the impacts on system-level power and residential load curves. Such population modeling allows for the inherent and permanent load reduction accomplished by the more efficient HPWHs to be considered, in addition to the temporal DR services the water heater can provide by switching ON or OFF as needed by utilities. The economic and emissions impacts of using large-tank water heaters in DR programs are then analyzed from the utility and consumer perspective, based on National Impacts Analysis in Phase 3. Phase 1 is discussed in this report. Details on Phases 2 and 3 can be found in the companion report (Cooke et al. 2014).