Integration of BIM and Energy Consumption Modelling for Manufacturing Prefabricated Components: A Case Study in China

Table 2

Energy consumption inventory of prefabricated component production.

Component type	Stage	Energy consumption content	Data sources
Component 1	Raw material production	Energy consumption to produce 1 kg raw material No. 1 (ematerial1 kJ)	(1) Statistical data of raw material factories
		Energy consumption to produce 1 kg raw material No. 2 (ematerial2 kJ)	(2) National energy statistical yearbook
		… …	(3) Raw material production standards
	Raw material transportation	Energy consumption to transport 1 kg raw material No. 1 (etransport1 kJ)	(1) Geographical location of raw material factories
		Energy consumption to transport 1 kg raw material No. 2 (etransport2 kJ)	(2) Geographical location of prefabricating factory
		… …	(3) The transportation plan
	Factorized production of prefabricated components	Energy consumption of machine No. 1 (emachine1 kJ)	(1) Construction organization design
		Energy consumption of machine No. 2 (emachine2 kJ)	(2) Design drawings
		… …	(3) Production plan of prefabricating factory
		Energy consumption of labour (ehuman kJ)