Reducing peak thermo-electricity energy demand in building: Insights from sensible and latent storage – Applicable in hot and arid regions

IF 6.4 2区 工程技术 Q1 THERMODYNAMICS
Wajdi Rajhi , Noreen Izza Arshad , Naoufel Kraiem , Ahmed Mir , Lioua Kolsi , Ahmad H. Milyani , Mohammed N. Ajour , Hesham A. Alhumade , Aliakbar Karimipour
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Abstract

In hot and desert regions, buildings have a considerable share in electricity consumption, so supplying electricity in critical hours for building cooling is always challenging for the electricity supply grid. In this numerical study, using sensible and latent-based storage approaches, the goals of peak shaving and load shifting were pursued. The sensible-based approach (first technique) was followed by adding a cold water storage tank which is responsible for cooling the building during critical hours. The tank is charged by the chiller during off-peak hours. The latent-based approach (second technique) was achieved through phase change materials (PCMs) integrated into building envelopes. Owing to using the sensible-based approach, not only was the electricity consumption completely cut during critical hours, but the peak hour was postponed to the early hours of the next day (i.e., load shifting). Based on the results, using the first technique does not necessarily lead to peak shaving. To follow the goal of peak shaving, the use of the second technique is recommended. The simultaneous use of both approaches made the building meet the cooling requirements during critical hours without receiving electricity from the supply grid. Moreover, the building receives up to 54.9 % less electricity from the grid (peak shaving), and simultaneously peak hour was postponed by at least 6 h (load shifting).

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来源期刊
Case Studies in Thermal Engineering
Case Studies in Thermal Engineering Chemical Engineering-Fluid Flow and Transfer Processes
CiteScore
8.60
自引率
11.80%
发文量
812
审稿时长
76 days
期刊介绍: Case Studies in Thermal Engineering provides a forum for the rapid publication of short, structured Case Studies in Thermal Engineering and related Short Communications. It provides an essential compendium of case studies for researchers and practitioners in the field of thermal engineering and others who are interested in aspects of thermal engineering cases that could affect other engineering processes. The journal not only publishes new and novel case studies, but also provides a forum for the publication of high quality descriptions of classic thermal engineering problems. The scope of the journal includes case studies of thermal engineering problems in components, devices and systems using existing experimental and numerical techniques in the areas of mechanical, aerospace, chemical, medical, thermal management for electronics, heat exchangers, regeneration, solar thermal energy, thermal storage, building energy conservation, and power generation. Case studies of thermal problems in other areas will also be considered.
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