期刊
ENERGY AND BUILDINGS
卷 97, 期 -, 页码 21-32出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.enbuild.2015.03.050
关键词
Thermal energy storage; Condenser-side thermal storage; Chilled water thermal storage; Residential air conditioning; Peak load reduction; Rainwater collection; Energy-Water Nexus
资金
- Pecan Street Inc. as part of the Pecan Street Smart Grid Demonstration Project Grant from the Department of Energy
This paper discusses the development of a model for evaluating peak load reduction and change in overall energy consumption for a residential air conditioning (AC) compressor with and without condenser-side thermal storage. Stored rainwater (or any other type of on-site water storage) could be utilized as a heat sink for the condenser during peak hours, allowing for more efficient and lower power compressor operation, then re-chilled at night during off-peak hours. The system evaluated in this manuscript is referred to as 'integrated thermal energy and rainwater storage' (ITHERST). The model used simulated cooling load data for a typical home in Austin, Texas, based on summer 2011 historical and typical meteorological year (TMY) datasets. The analysis suggests that the ITHERST system with 3785-18,9251 of water could reduce on-peak compressor power demand by approximately 29-53%, as compared to a traditional AC with an air-cooled condenser. However, total compressor energy consumption increases 5-15% because of the inefficiencies of re-cooling the thermal mass, but this additional energy consumption occurs during low demand off-peak hours. System performance varied depending on weather data, the individual compressor, and thermal storage volume. (C) 2015 Elsevier B.V. All rights reserved.
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