Elementary Principles 247 - 7.3(cont'd Emissions Paper 400...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
7- 2 7.3 (cont’d) Emissions: Paper 400 sacks .0510 oz 1 lb sack 16 oz 1000 sacks .0516 oz 1 lb sack 16 oz lb reduction mm m ⇒+ = 00 45 30% . Plastic 800 sacks .0045 oz 1 lb sack 16 oz 2000 sacks .0146 oz 1 lb sack 16 oz lb reduction m = 205 14% . Energy: Paper 400 sacks Btu sack 1000 sacks Btu sack Btu; 27% reduction = × 724 905 119 10 6 . Plastic 800 sacks Btu sack 2000 sacks Btu sack Btu; 17% reduction = × 185 464 108 10 6 . (c) . 3 10 persons 1 sack 1 day 1 h 649 Btu 1 J 1 MW person - day h 3600 s 1 sack 9.486 10 Btu J / s MW 8 -4 × × = 24 10 2375 6 , Savings for recycling: 017 2 375 . ( , MW) = 404 MW (d) Cost, toxicity, biodegradability, depletion of nonrenewable resources. 7.4 (a) Mass flow rate: gal 1 ft (0.792)(62.43) lb
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 02/27/2012 for the course CHEMICAL E 312 taught by Professor Cheung during the Fall '11 term at The University of Akron.

Ask a homework question - tutors are online