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iHeat Design Review

iHeat Design Review. for the City of Kendrick Thursday, July 30 th , 2009. Overview. Problem Statement Primary Client Needs Current System & Recommendations Thermal Model Non Traditional Solutions Off the Shelf Solutions Custom Built Solutions Questions. Problem Statement.

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iHeat Design Review

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

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

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

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

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

  6. Thermal Model Increasing the temperature of 5,000 gallons of water 25oF in 24 hours requires an addition of 44,000BTU/hr

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

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

  9. Off-the-Shelf Solutions Propane Heater Electric Heat Pumps Direct Solar Panels Hybrid System

  10. Off-the-Shelf SolutionsPropane Heater • 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. Off-the-Shelf SolutionsElectric Heat Pumps • 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

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

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

  14. Off-the-Shelf SolutionsSummary

  15. Custom Built Solutions Solar Array - Spiral Solar Array - Manifolds & Sheets

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

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

  18. Custom Built SolutionsComparison to Off-the-Shelf

  19. Questions

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