DOI: 10.1016/j.enconman.2020.112521
论文题名: Forecasting the performance of a district solar thermal smart network in desert climate – A case study
作者: Hmadi M. ; Mourtada A. ; Daou R.
刊名: Energy Conversion and Management
ISSN: 1968904
出版年: 2020
卷: 207 语种: 英语
英文关键词: Absorption chillers
; District plants
; Evacuated tube solar collectors
; Hot phase change material
; Smart thermal network
; Solar cooling
Scopus关键词: Architectural design
; Carbon dioxide
; Cooling systems
; Global warming
; Heat storage
; Investments
; Lithium bromide
; Phase change materials
; Refrigerators
; Roofs
; Solar collectors
; Solar heating
; Storage (materials)
; Tanks (containers)
; Water
; Water absorption
; Absorption chillers
; District plants
; Evacuated tube solar collector
; Solar cooling
; Thermal network
; Absorption cooling
英文摘要: The present paper investigates the performance of a district solar thermal smart network capable of providing the cooling, heating, and domestic hot water needs for a group of 100 villas in the desert climate of Riyadh, Saudi Arabia. Evacuated tube solar collectors are distributed over the villas’ roofs, while the hot water Lithium Bromide absorption chillers and hot phase change material thermal storage tanks are located in a centralized plant. Electrical heating elements embedded in the thermal storage tanks are considered as back up auxiliary sources in case of shortages. Using the “Design Builder” energy simulation program, a typical villa constructed as per the local thermal standard has been modeled to calculate the hourly thermal loads. These hourly profiles are the initial inputs for a Transient System Simulation (TRNSYS) model integrated with the Generic Optimization Program (GenOpt). The interaction between these two programs is used to find the optimized sizing of the solar collectors’ area and the hot thermal storage volume which could achieve the maximum thermo-economic performance with a 100% solar fraction. The hourly transient simulations over a one-year period show that this system can achieve up to 82.67% reduction in the annual electrical consumption as well as carbon dioxide emissions if compared to conventional district thermal plants. Furthermore, the smart network benefits have been revealed from three different aspects: generation source, transmission loop network, and end-user consumer. The feasibility analysis performed shows that adopting the smart network can enhance the profitability of the project by 34.89% if compared to central solar plants. Also, it gives the end-user the opportunity to participate in energy production through buying the solar collectors installed on their roofs, and thus further enhancing the reduction in their annual thermal bills from 23.13% to 82.88% in a payback period of 4 years and 11 months. © 2020 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/158942
Appears in Collections: 气候变化与战略
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作者单位: Doctoral School of Science and Technology (EDST), Lebanese University, Beirut, B.P. 11-2806, Lebanon; Higher School of Engineering in Beirut (École supérieure d'ingénieurs de Beyrouth – ESIB), Saint Joseph University, B.P. 17-5208 Mar Mikhael, Beirut, 1104 2020, Lebanon
Recommended Citation:
Hmadi M.,Mourtada A.,Daou R.. Forecasting the performance of a district solar thermal smart network in desert climate – A case study[J]. Energy Conversion and Management,2020-01-01,207