1. for the City of Kendrick Thursday, July 30 th, 2009 1

2. Problem Statement Primary Client Needs Current System & Recommendations Thermal Model Non Traditional Solutions Off the Shelf Solutions Custom Built Solutions Questions 2

3. Problem Statement Devise a cost effective heating method to allow pool usage as early as Memorial Day weekend. 3

4. Primary Client Needs Safety Time of Year Energy Conservation Temperature Longevity Budget Simplicity Aesthetics 4

5. Current System & Recommendations Leak Cover Usage Surge Tanks Flow Meter Shading 5

6. Thermal Model Initial Heat Up SourceTemperature Rise Surface AreaBTU/hr iHeat25 o F3,480sqft1,203,241 www.poolinfo.com25 o F3,480sqft915,240 www.solardirect.com25 o F3,480sqft1,392,000 www.poolproducts.com25 o F3,480sqft1,096,200 6 Increasing the temperature of 5,000 gallons of water 25 o F in 24 hours requires an addition of 44,000BTU/hr

7. Directly capturing the sun’s heat by painting the pool walls with thermo-sensitive paint or using an advanced thermal cover system. 7

8. Heater powered by alternative energy source, such as wind, hydroelectrics, or methane gas from compost or manure. 8

9. Propane Heater Electric Heat Pumps Direct Solar Panels Hybrid System 9

10. Off-the-Shelf Solutions Propane Heater 10 Initial Cost: $3500 - 7,500 Unit Purchase Price, Installation, Propane Tank, Lines Seasonal Operating Expense: $4000-5000 Longevity: ~7 yrs Time to heat: 3-4 days

11. Initial Cost: $13,000-20,000 Unit Purchase Price, Installation, Lines Seasonal Operating Expense: $600-1000 Longevity: 10-15 yrs Time to heat: 3-4 days 11 Off-the-Shelf Solutions Electric Heat Pumps

12. Initial Cost: $12,000-30,000 + installation Seasonal Operating Expense: $200-400 Longevity: 10-15 yrs Time to heat: 2-3 weeks 12 Off-the-Shelf Solutions Direct Solar Panels

13. Combines solar panels with a heater in the same system. Accommodates insufficient sunlight. Minimizes size of heater and size of solar array. 13 Off-the-Shelf Solutions Hybrid System

14. 14 Off-the-Shelf Solutions Summary

15. Solar Array - Spiral Solar Array - Manifolds & Sheets 15

16. Custom Built Solutions Solar Array - Spiral Initial Cost: $5,000-6,000 Seasonal Operating Expense: $200-400 Longevity: 10+ yrs Drip hose, PVC fittings, framing 16

17. Initial Cost: $6,000-7,000 Seasonal Operating Expense: $200-400 Longevity: 10+ yrs Lexan sheets, PVC manifolds 17 Custom Built Solutions Solar Array - Manifolds & Sheets

18. SystemCost per ft 2 ft 2 Total Off-the-Shelf Solar $ 7.002400$12,000-30,000 Spiral $ 3.00*?? Manifolds & Sheets $ 3.50*?? 18 Custom Built Solutions Comparison to Off-the-Shelf

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