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Design of a Rapid Beverage Chiller

Discover a cool new technology for rapidly chilling your iced tea with the Rapid Beverage Chiller. This compact and lightweight device uses innovative TEC cooling technology to chill your tea in just minutes. No more waiting for hours or dealing with diluted or freezer-tasting tea. Get the perfect iced tea every time with the Rapid Beverage Chiller.

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Design of a Rapid Beverage Chiller

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  1. Design of a Rapid Beverage Chiller for iced tea enthusiasts

  2. Unaided, iced tea takes hours to make Cool: 2-6 hours Brew: 2-8 minutes

  3. Market for specialized kitchen tools

  4. Brew directly into ice Functionality: • Fill pitcher with ice • Brews tea • Pours tea into pitcher Issues: • Hot tea melts ice • Ice dilutes tea • “That freezer taste”

  5. Ice water circulation Functionality: • Add ice and water • Insert can or bottle • Rotates container, sprays with ice water Issues: • Requires ice (minor) • Bad for tea (fixable?)

  6. Cool new technology: TEC’s Pros: • Super compact, light • No moving parts Cons: • Inefficient (40-70%) (≈300% for full-size fridge)

  7. Ice versus price Isolated-ice systems Proposal: TEC-cooled system Pros: Plug and play Precise temperatures Cons: Pricier Bulky (heatsinks!) Draws a lot of power Gives off a lot of heat Pros: • More inexpensive • Likely more compact Cons: • Needs lots of ice for hot tea

  8. Rapid Beverage Cooler: Take 1 Stirrer Vessel + sensor Spigot TEC Fan Heatsink

  9. Design 1: Too hot for TEC operation! Problem: • Can’t operate past ≈80°C • Not needed at high temps Solution: • Only run TEC below certain temperature

  10. Rapid Beverage Cooler: Take 2 Three-state process: Upper fans on, TEC off: Cool to ≈60°C All fans on, TEC on: Cool to room temp. Lower fans on, TEC on: Cool to final temp.

  11. Circuit breaker limits performance • Power from wall: 1500 W (US/Canada) • Power through TEC(s): 1200 W • Breaker is limiting factor (67% efficient TEC): 0.67 × 1500 W × 0.8 = 800 W Calculate the temperature profile: • Aggressive air cooling • Constant TEC heat flow: 800W (simplistic) • TEC turns on at 60°C

  12. Cool a liter of tea in 9 minutes Temperature (°C) Time elapsed (minutes)

  13. Problems I may encounter… • Variation in TEC heat transfer rate • Stage 2: Better than estimated • Stage 3: Worse than estimated • Heat dissipation too slow → Slower cooling process. • Too expensive to mass-produce (>$250?) Backup plan: Investigate other cooling systems

  14. Demand for iced tea chillers • TECs enable powerful, convenient chillers • 1 liter: 90°C to 6°C in 9 minutes

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