Open AccessDevelopment of hybrid life cycle inventories (HLCI) database for embodied energy and carbon intensities of Malaysian construction materials
Author(s) -
Wan Mohd Sabki Wan Omar
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/513/1/012041
Subject(s) - embodied energy , carbon fibers , energy analysis , life cycle inventory , product (mathematics) , computer science , process analysis , process (computing) , environmental science , process engineering , inventory analysis , life cycle assessment , production (economics) , environmental economics , energy (signal processing) , statistics , mathematics , engineering , algorithm , thermodynamics , economics , physics , geometry , macroeconomics , composite number , operating system
This paper investigates the completeness of process, input-output (I-O) and hybrid life cycle inventory (LCI) analysis and their applicability as applied to the Malaysian construction materials. The process, I-O, and hybrid analysis were evaluated at the basic materials and products level to identify the gaps between models and further incorporated into the material and product inputs of a selected building. It was found that the largest differences in embodied energy (EE) and embodied carbon (EC) intensities of the materials and products between I-O and hybrid analysis accounted for up to 65.90% and 62.08%, respectively. Further analysis of the EE and EC intensities of the building revealed that the hybrid analysis were significantly higher than I-O analysis estimated to be 44.39% and 43.57% respectively. On average, the EE and EC intensity values using I-O analysis were lower than hybrid analysis due to inherent limitations in this model. Although using I-O data was considered not representative due to inherent limitation, it was considered applicable for energy analysis due to lack of process data in Malaysian building industry.