Answer:
6259.12 \frac{Btu}{day}
Explanation:
Given -
Gas potential for pig manure - 6.0 ft3/lbVS
Average manure produced by animal - 1.30 dry lbs/day
Dry manure - 0.90 lbVS/dry lbs
Density - 0.0416 lb/ft3
Energy content of methane - 21,433 Btu/lb
Potential of manure -
[tex]1.30[/tex] dry lbs/day [tex]*[/tex] [tex]0.90[/tex] lbVS/dry lbs
[tex]= 1.17[/tex] lbVS/day
The daily energy potential for one animal is equal to
[tex]1.17[/tex] lbVS/day [tex]* 0.0416[/tex]lb/ft3 [tex]* 6.0[/tex]ft3/lbVS[tex]* 21,433[/tex]Btu/lb
[tex]1.17 * 0.0416* 6.0* 21,433 * \frac{lbVS* lb*ft^3* Btu}{day*ft^3* lbVS * lb} \\= 6259.12 \frac{Btu}{day}[/tex]
