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building an electric kettle
i've finished my 15 gallon electric kettle. it runs off of 240VAC -- i plug it into my oven receptical in my apartment. ian saxton and i built a computer to control the power of a 6000W water-heater element -- you input a target temperature and the computer varies the duty cycle based on a thermistor sensor. once the target is reached, the computer holds the temp until it receives further instructions. it works great -- i use it for heating mash/sparge water and for boiling 10 gallon batches. running full blast, it boils up 13 gallons of wort in about 15 min.parts list:
| Item | Cost |
|---|---|
| 15 gallons SS keg | $20 on craigslist |
| 240VAC/50 amp SSR | $13.49 on ebay |
| 6000W 240VAC low-density water heater element | $11.90 on ebay |
| 3 NEMA 14-50P 240VAC plugs (2 male, 1 female) | $20.40 on ebay |
| 16 char. back-lit LCD | $4.50 |
| 3 momentary switches, 1 toggle | $5.50 |
| 30A double pole switch (main power) | $8 |
| PIC-18F252-I/SP microchip | free :) |
| 240VAC->10VAC/0.1 amp transformer | $3.00 |
| Rectifiers/LEDs/Capacitors/Resistors | $5.00 |
| Thermistor (temp. probe) | $0.75 |
| 25 ft 10AWG 4-wire cable | $40 |
| TOTAL | $132.54 |
before i built the cart:
boiling a 10 gallon batch:
boiling a 5 gallon batch:
the control box:
inside the control box:
a close-up inside the control box:
humble beginings...
| UPCOMING/RECENT |
·
3/6/2011 — video interview for accents online, the web mag of the ensemble intercontemporain.
5/6/2011 — open end will be performed by Melanie Sehman at the Bellingham Electronic Arts Festival in WA.
4/23/2011 — open end will be performed by Melanie Sehman at the Wayward Music Series in WA.
4/19/2011 — open end will be performed by Melanie Sehman at Portland State University in OR.
3/12/2011 — open end will be performed by Melanie Sehman in NY, NY.
· 2/25/2011 — Crumbling Walls and Wandering Rocks will be performed by Ensemble InterContemporain as part of their 2011 season at Cité de la Musique in Paris.
·11/11/2010 — open end will be performed by Brian Archinal at PASIC in Kentucky.
·7/6/2010 — article and video interview by Trevor Hunter at NewMusicBox.com.
· 6/5/2010 — open end will be performed by Andrea Moore at People Inside Electronics in Pasadena, CA.
· 5/27/2010 — Crumbling Walls and Wandering Rocks will be performed by the Wet Ink Ensemble in New York, NY.
· 4/14/2010 — open end will be performed by Melanie Sehman in NY, NY.
· 4/1/2010 — open end will be performed by Brian Archinal in San Diego, CA.
· 3/11/2010 — open end will be performed by Brian Archinal in Tempe, AZ.
· 12/9/2009 — String Quartet no. 1 will be played by Ensemble SurPlus in E-Werk, Freiburg.
5/6/2011 — open end will be performed by Melanie Sehman at the Bellingham Electronic Arts Festival in WA.
4/23/2011 — open end will be performed by Melanie Sehman at the Wayward Music Series in WA.
4/19/2011 — open end will be performed by Melanie Sehman at Portland State University in OR.
3/12/2011 — open end will be performed by Melanie Sehman in NY, NY.
· 2/25/2011 — Crumbling Walls and Wandering Rocks will be performed by Ensemble InterContemporain as part of their 2011 season at Cité de la Musique in Paris.
·11/11/2010 — open end will be performed by Brian Archinal at PASIC in Kentucky.
·7/6/2010 — article and video interview by Trevor Hunter at NewMusicBox.com.
· 6/5/2010 — open end will be performed by Andrea Moore at People Inside Electronics in Pasadena, CA.
· 5/27/2010 — Crumbling Walls and Wandering Rocks will be performed by the Wet Ink Ensemble in New York, NY.
· 4/14/2010 — open end will be performed by Melanie Sehman in NY, NY.
· 4/1/2010 — open end will be performed by Brian Archinal in San Diego, CA.
· 3/11/2010 — open end will be performed by Brian Archinal in Tempe, AZ.
· 12/9/2009 — String Quartet no. 1 will be played by Ensemble SurPlus in E-Werk, Freiburg.