A comparative life cycle assessment (LCA) of lighting technologies for greenhouse crop production

JOURNAL OF CLEANER PRODUCTION

卷:140

Article

Zhang, Hao¹  Burr, John²  Zhao, Fu^1,3 

[1] Purdue Univ, Sch Mech Engn, W Lafayette, IN 47907 USA

[2] Purdue Univ, Krannert Sch Management, W Lafayette, IN 47907 USA

[3] Purdue Univ, Div Environm & Ecol Engn, W Lafayette, IN 47907 USA

关键词: Life cycle assessment;    Greenhouse crop production;    Light emitting diode;    High pressure sodium;    Incandescent;   

DOI  :  10.1016/j.jclepro.2016.01.014

来源: Elsevier

【 摘 要 】

Greenhouse, indoor or vertical horticulture using supplemental lighting have become an important part of specialty crop cultivation. This study reports a comparative life cycle assessment of different lighting systems applied in greenhouse crop production. Two typical cases are considered: (1) 1000 W HPS lighting system vs. 650 W LED lighting system with functional unit defined as 653 kg tomatoes from 8 sq. ft. floor area over 15 year; (2) 150 W incandescent lighting vs. 18 W LED lighting with functional unit defined as 1640 sq. ft. of bedding plants from 8 sq. ft. floor area over 15 year. Impact assessment is done using TRACI methodology and cumulative energy demand (CED) is also considered. The results show that 650 W LED lighting system has smaller environmental impact than the HPS lighting system (38%-47% reduction). The use phase dominates the total environmental impacts (approximately 74%-97% for HPS lighting system, and 78%-100% for LEDs). Benefits of substituting LEDs for incandescent lighting for greenhouse applications are even larger leading to a significant reduction (67%-90%) on most environmental impact categories considered (except carcinogenics where LED is 12% higher)). For this case, the use phase remains the largest contributor, accounting for 28%-100% for incandescent and 47%-100% for LEDs. (C) 2016 Elsevier Ltd. All rights reserved.

【 授权许可】

Free