Keg tap redesign

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Contents

Executive Summary

Market Research

Provide description of market research and observations. Include pictures to communicate key observations where possible. Summarize top stakeholder product needs in a list.


Keg Use Survey

In order to determine the market need for kegs and taps, the following survey was distributed. We collected over 100 responses: approximately 85% from college students, 10% from young professionals, and 5% from adults. About three-quarters of those surveyed drink from a keg a few times a month; the remainder reported consuming beer from a keg on a less regular basis (a few times a year, used to in college but no longer do, and never). The questions are based on home keg use as opposed to beer on tap at bars.


1. What issues have you experienced getting beer out of a keg?

Of the approximately 100 people surveyed, 90% has issues with too much foam, 81% experienced long lines to fill up their cup, and 50% found it difficult to pump the tap. Other issues included:

  • Tap dispesing beer too slowly
  • Difficulty getting the last bit of beer out of the keg
  • Trouble with keg stands
  • Tap breaking


2. What are some advantages/disadvantages to buying a keg instead of cans or bottles?

Advantages:

  1. much cheaper than cans/bottles
  2. reduced waste and smaller environmental impact
  3. easier to clean up
  4. carbonation level better from keg
  5. assuming the keg is new/has been well taken care of, the beverage quality is generally higher (less chance of skunking or tasting like metal)
  6. easier to provide for large groups of people
  7. can be delivered
  8. don’t need to search for a bottle opener.

Disadvantages:

  1. have to return keg
  2. keg needs to stay cold until you’re done with it
  3. less variety with kegs than bottles and cans
  4. may be tougher to monitor consumption i.e. not knowing what is in a certain guest’s cup and harder to keep track of the number of beers you’ve had when refilling a cup
  5. negative perception of “keggers” versus a more mature party with premium beers
  6. finding a place to put the keg
  7. accepting that kegs are unattractive
  8. tap could break
  9. if keg isn't finished the beer will go bad and be a waste
  10. kegs are heavy and hard to move
  11. issues with foam
  12. kegs are banned at some schools


3. What events would you purchase a keg for?

  • Any large, casual party
  • Tailgating
  • Barbeques
  • Camping


4. Have you ever tapped a keg? What problems did you have, if any?

  1. The tap would not stay screwed into the keg (may have been broken)
  2. Difficult to screw the tap on properly
  3. Not familiar with type of tap (keg tap not intuitive)
  4. Beer sprayed all over the place because of old or broken seal
  5. Pressure lost so the keg had to be retapped
  6. Incompatible tap-keg connections


5. What would you look for when purchasing a keg tap?

  1. Large, stationary upright tap as opposed to a long tube and tiny nozzle
  2. Sturdy feel (the piston doesn’t wobble)
  3. Low cost
  4. Durable
  5. Good pumping and dispensing mechanisms
  6. Quality materials
  7. Intuitive/Easy to use
  8. Multiple nozzles
  9. Good grip on the dispenser
  10. Lightweight
  11. Easy to wash
  12. Long hose with a sturdy nozzle
  13. Compatible with a broad array of kegs
  14. Maximum beer flow


6. How could your overall keg experience be improved?

  1. Way to chill keg
  2. Pressure gauge to prevent over pumping
  3. Make a keg like a Gatorade cooler with a spigot at the bottom and no tap
  4. Handle that doesn't protrude so far off the keg (pump handle like most large ketchup dispensers)
  5. Eliminate foam
  6. Multiple hoses
  7. Push a button to automatically pump the keg to an optimal pressure
  8. Stronger flow from tap
  9. Way to preserve beer left over in keg so it doesn't go bad
  10. Keg with wheels for ease of transport
  11. Add light so that you can see where you’re pouring at night
  12. More suitable for keg stands
  13. More intuitive
  14. Rubber on keg handles to make carrying it easier
  15. Have only open or closed option for nozzle
  16. More pressure per pump (foot pump?)
  17. Keep cost down (no CO2 canisters)


Result Summary

Through the multiple questions asked in this survey there seems to be some common complaints with the current design of keg taps. Many of these complaints can be chalked up to simple user misuse, which could be resolved with a set of directions, though they would probably never be read. The largest complaint we thought we could actually make a difference with comes from the amount of foam that the tap creates. Other interesting complaints included the rate at which you can access the beer and the users ability to keep the beer cold. Due to the large percentage of people complaining about the foam, you can see that many of our brainstormed ideas were wrapped around fixing that problem. We also had multiple ideas to access the beer more quickly and keep it cold more efficiently, and decided to include at least one of each in our design concepts. Because of the glaring complaint of foam you can see that many of our brainstormed ideas were wrapped around fixing that problem.

Design Concepts

Based on our survey results, the key areas of improvement are foam reduction, keg refrigeration, and line reduction. While the 5 main concepts below fulfill these specific areas, other improvements will also be made. Ease of use, environmental impact, cost, and aesthetics will all be taken into account, and general improvements in these areas will be automatic. A more comprehensive list of ideas can be found in the appendix.


Figure 1. Pressure Gauge
Figure 1. Pressure Gauge

Issue 1: Foam Reduction

Concept Solutions:

  • Pressure Gauge

A simple pressure gauge is something that could limit the chance of misuse by telling the user when the keg is at the ideal pressure. If we also added a release valve, this would take it a step further by entirely preventing the user from over-pumping. Ideally the gauge would be attached to the tap at the point where air is coming back out of the keg. An illustration of this is shown in Figure 1.







Figure 2. Seperate Reservoir
Figure 2. Seperate Reservoir
  • Separate Beer Reservoir

A separate beer reservoir is another concept idea that would reduce foam. By having the beer enter a separate container at a high point and exit at a low point, the foam would ideally rise to the top, while the beer would exit out the hose. Whether the separate reservoir is internal or external is yet to be determined. An illustration of this general concept can be seen in Figure 2.









Figure 3. Double Barrel Pump
Figure 3. Double Barrel Pump
  • Double Barrel Pump

The Double Barrel Pump is a concept that could potentially both reduce foam and facilitate pumping. With more air going into the keg, less pumps would be necessary. Also, this design would change the center cylinder, which is a key source of turbulence. In the Double Barrel Pump design, the beer would flow in a straight path, while the air flow would have a curved path. This is the opposite from standard center cylinders, where the beer is forced around many sharp turns and tight corners. An illustration of the double barrel pump is shown in Figure 3.










Figure 4. Cooling System
Figure 4. Cooling System

Issue 2: Keg refrigeration

Concept Solution:

  • Coiled tubes in ice bath

Since finding containers to hold a keg can often be difficult, and the ice can be messy, this solution would minimize these issues. A container would be placed on top of the keg with the beer tube coiled around a centered cylinder. The container would then be filled with ice in order to cool the beer flowing out of the tube. It would probably take quite a length of tubing, but this could be determined by applying heat transfer calculations. Also, the shape of the container might change depending on whether it is manually pumped (there would need to be a hole to access the plunger), or if it would have a built-in C02 canister to regulate the pressure. A general illustration of this concept is shown in Figure 4.






Figure 5. Multiple Hoses
Figure 5. Multiple Hoses

Issue 3: Distribution Improvement

Concept Solution:

  • Multiple hoses

Multiple hoses is a relatively simple solution to minimizing the waiting period for a beer. This is an idea that would definitely have to be paired with another concept, as it doesn't help to limit foam. While the illustration shows hoses coming out of the same opening in the tap, this might not be the case. Also, the tubing could potentially be elimated in favor of a series of spouts. A concept sketch is shown in Figure 5.






Competitor Products

Identify relevant competitor products from your patent searches, commercial searches, web searches, and expert interviews. Compare pros and cons of each concept on a standard Pugh chart against your top stakeholder needs, and benchmark against the most relevant competitors. If your concepts are better on some attributes and worse on others, identify any market segments likely to value the tradeoffs you can offer.

Figure 6. Pugh Chart
Figure 6. Pugh Chart

Design Plan

Provide a Gantt chart to map out the team plan for design and prototyping through the remainder of the semester. Be detailed about our particular project and member contributions.

Key Findings

Summarize findings and recommendations. In particular, identify which concept you recommend pursuing for the remainder of the semester. Provide a hypothetical user scenario representative of our target market from our research findings to motivate top solution concept.


By looking at the results for user testing, survey, and Pugh chart, we have found that a combination of our concepts is necessary. Specifically, we recommend combining the pressure gauge, to limit misuse, the double barrel pump, to facilitate pumping and improve the center cylinder, and a multiple hose attachment to accomodate more than 1 person at a time.

Team Member Roles

While the majority of the sections were done by the group as a whole, each person helped in the following areas:

Dan Boljonis: Gantt chart

Keith Haselhoff: Pugh chart

Abby Morrell: Design Concept sketches and descriptions

Julia Weirman: Compiled survey results

References

Appendix

Brainstorming Ideas:

  1. Pressure meter
  2. Pressure release valve
  3. Flat surface to put cup on
  4. Multiple cup holders
  5. Adjustable cup holder
  6. Multiple hoses
  7. Instead of hoses have a reservoir with spouts
  8. Flatten the keg on one side
  9. Carbon Dioxide canister
  10. Keg stand helper
  11. Wheels on keg
  12. Flatter, more rectangular handle
  13. Strap for carrying keg
  14. Motorized keg
  15. Tubing to cool beer
  16. Cooling Koozie
  17. Insulated keg
  18. Instructions for tapping
  19. Larger diameter hose
  20. Empty-full gauge
  21. Cup dispenser
  22. Pong ball dispenser
  23. Quarter dispenser
  24. Fold-out table
  25. Keg grill
  26. Pump into separate reserve
  27. Cooled reserve
  28. Hose-less nozzle
  29. Breathalyzer
  30. Flow straightener
  31. Separate center cylinder
  32. Way to suck out foam faster
  33. Button to tap keg instead of pump
  34. Recirculate foam back into keg
  35. External primer
  36. Internal chamber to recirculate foam
  37. Different locking mechanism
  38. Self-assembled tap (compact packaging)
  39. Put some substance into keg to reduce foam (like Guinness bottles)
  40. Put some substannce into tap to reduce foam
  41. Keg can play music when pumped
  42. Charges ipod with pumping
  43. Nozzle only open or close
  44. Koozie to insulate keg
  45. Beer counter
  46. Pump counter
  47. Measuring device to dispense only certain amount of beer
  48. Plastic keg tap
  49. Novelty keg taps with different characters (ie. Peter Griffin, Ninja Turtles, Statue of Liberty)
  50. Keg tap with audio
  51. Voice-activated pressure gauge
  52. Magic 8 ball keg tap
  53. Sanitizer
  54. Glow in the dark keg tap
  55. Flashlight attached to nozzle
  56. Attach different beverage to nozzle to make mixed drinks
  57. Different nozzle heads (Spray, jet)
  58. Foot pump tap
  59. Electric motor
  60. Multiple kinds of beer in 1 keg
  61. Disco-light tap
  62. Fog machine
  63. Foam machine
  64. Gargoyling assist
  65. Turn a wheel instead of pumping
  66. Clear tube to see foam
  67. Plexiglass keg
  68. Strip of plexiglass to show beer level
  69. Plexiglass top only
  70. Recognition system (Only one person can tap keg)
  71. Theft reduction system
  72. Vending machine keg (Quarter per beer)
  73. Tells alcohol percentage
  74. Removable hose, different attachments
  75. Water fountain tap
  76. Beer flows out over fountain
  77. Disposable nozzle cover
  78. No lever arm on tap (twists into place)
  79. Make everything stainless steel
  80. Diamond keg tap
  81. Bigger center cylinder
  82. Hose attachment at angle or straight up
  83. Offset pump so beer comes out straight
  84. Double barrel pump (balances out moment)
  85. Use outlet tube to pump (no turns)
  86. Pump like ketchup dispenser
  87. Universal attachment (works for all kegs)
  88. Ice container with coils for cooling beer (sits on keg, attaches to tap)
  89. Dishwaster safe
  90. Garden hose nozzle adapter for easy cleaning (flush with water)
  91. Retractable hose (like in sink)
  92. Hose comes coiled, tap has holder
  93. Instead of flowing through coils, beer flows over cold surface into cup
  94. Handle turns red when keg nears empty
  95. Rack for holding keg
  96. Container that has drain for water when ice melts
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