Laserfiche WebLink
CENTURY CENTER -Hot Water Pumps <br />Install variable speed drives on Hot Water Pumps: <br />60 ...TOTAL HW PUMP HORSEPOWER (HWPHP) <br />80.0% ...COMBINED LOADING PERCENT OF ALL HW PUMP MOTORS (HWPLOAD) <br />85.0% ... COMBINED EFFICIENCY OF ALL HW /CW PUMP MOTORS (HWPEFF) <br />31725' ...TOTAL PUMP RUNTIME HOURS (PUMPHRS = HVACHRS /168 *HHPY) <br />15% ...PERCENT OF HOURS OPERATION AT 100% (100 %HRS) <br />30% ...PERCENT OF HOURS OPERATION AT 90% (90 %HRS) <br />25% ...PERCENT OF HOURS OPERATION AT 80% (80 %HRS) <br />20% ...PERCENT OF HOURS OPERATION AT 70% (70 %HRS) <br />10% ...PERCENT OF HOURS OPERATION AT 60% (60 %HRS) <br />0% ...PERCENT OF HOURS OPERATION AT 50% (50 %HRS) <br />0% ...PERCENT OF HOURS OPERATION AT 40% (40 %HRS) <br />0% ...PERCENT OF HOURS OPERATION AT 30% (30 %HRS) <br />100% ...SUM OF PERCENT OF HOURS OPERATION <br />(Current) ( HWPHP* 0. 746KW /HP/HWPEFF) *HWPLOAD *PUMPHRS 156,915 KWH <br />(Retrofit) (HWPHP/HWPEFF *.746 KW /HP) *HWPLOAD *((1.0 *(100 %HRS *HWPHRS))+ <br />(.9A2.5 * (90 %HRS * HWPHRS)) + (.8A2.5 * (80 %HRS * HWPHRS)) + <br />(.7A2.5 " (70 %HRS * HWPHRS)) + (.6A2.5 * (60 %HRS * HWPHRS)) + <br />(.5A2.5 * (50 %HRS * HWPHRS)) + (.4A2.5 * (40 %HRS * HWPHRS)) + <br />(.3A2.5 * (30 %HRS * HWPHRS))) ___________________ 99,408 KWH <br />57,507 KWH <br />105 <br />