soln_to_hmwk1 2011

soln_to_hmwk1 2011 - PV Energy Cost $47 $4,888 FC $4,820.00...

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Homework No. 1 problem a First cost difference Solar Conventional Differential cost $4,820.00 $1,000.00 $3,820.00 savings $106.00 $628.57 $522.57 simple payback $7.31 years Solar would need some routine maintenance problem b to clean collectors, check fluids, etc. Elec Present Worth Method presnt worth analysis water heater requires essentially no maintenance. Solar conventional Option A Option B Calcs. FC $4,820.00 $1,000.00 First Cost,$ 4820 1000 EC $6.00 $628.57 Annual Energy Cost,$ 6 628.57 MC $100.00 $0.00 Annual Maint. Cost,$ 100 0 Cost of Money,% 8 8 0.08 PWF esc 7.78 Energy Escal Rate,% 3 3 0.03 PWF nonesc 6.71 Equipment Life, Yrs 10 10 1.08 Project Life, Yrs. 10 10 FC $4,820.00 $1,000.00 EC $46.68 $4,890.29 PWF annual expenses 6.7100813989 MC $671.00 $0.00 PWF annual exp. that esc 7.7766377019 0.9537037 $5,537.68 $5,890.29 PWF equip. replacement 0.4631934881 solar is better even though by a small margine problem c if energy costs escalate more than perdicted PV First Cost $4,820 $1,000 Solar conventional
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Unformatted text preview: PV Energy Cost $47 $4,888 FC $4,820.00 $1,000.00 PV Maint Cost $671 $0 EC $6.00 $628.57 PV Replacement costs $0 $0 MC $100.00 $5,538 $5,888 replacement cost $1,000.00 assumes electrical must be PWF esc 10.48 redone also PWF nonesc 8.56 PWF replacement 0.46 FC $4,820.00 $1,000.00 Present Worth Method EC $62.88 $6,587.43 MC $856.00 $0.00 RC $463.00 Option A Option B Calcs. $5,738.88 $8,050.43 First Cost,$ 4820 1000 solar is much better now Annual Energy Cost,$ 6 628.57 Annual Maint. Cost,$ 100 Cost of Money,% 8 8 0.08 Energy Escal Rate,% 3 3 0.03 Equipment Life, Yrs 10 10 1.08 Project Life, Yrs. 15 15 PWF annual expenses 8.5594786879 PWF annual exp. that esc 10.4825921234 0.9537037 PWF equip. replacement 0.4631934881 PV First Cost $4,820 $1,000 PV Energy Cost $63 $6,589 PV Maint Cost $856 $0 PV Replacement costs $0 $463 $5,739 $8,052...
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This note was uploaded on 10/22/2011 for the course EML 4930 taught by Professor Staff during the Fall '08 term at University of Florida.

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