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  1. #1
    Junior Member
    Join Date
    Feb 2018
    Location
    NB Canada
    Posts
    5

    Pre heat water for comercial brewer

    Im trying to spruce up a newco airpot brewer for my coffee trailer, im well aware that there are much nicer batch brewers out there with far more functionality but at the moment a fancy brewer is out of the budget.

    My newco is an 120v older model with a 1400w element, i removed the old tstat and replaced it with a watlow pid. Ive also added a momentary push button for the water solenoid for a bloom infusion. At the very least i know know the boiler temp.
    Pre heat water for comercial brewer-26992114_10155374129416139_7460062757070063035_n.jpg

    With the pid set to 200 and an incoming water temp of about 50 my brew water starts at about 185 and by the end of a 2L brew cycle my brew water is down to 168 and the boiler is down to 161, from here i have to wait almost 10 min for the boiler to warm back up.

    My Astoria 2g leaver is gas so i was wondering if i could implement a copper pipe pre heat circuit with a few loops around the boiler in vicinity of the burner , with a few fittings i can run my flojet input and split it in the machine to also output the preheated water to the newco brewer.

    Would a preheat circuit improve my brew temp stability?

  2. #2
    Seb
    Seb is offline
    Senior Member
    Join Date
    Mar 2014
    Location
    Quebec/Canada
    Posts
    137
    Could you insulate the boiler? That would be the easiest way, if you do a great job at insulating the boiler it might be enough.

  3. #3
    Junior Member
    Join Date
    Feb 2018
    Location
    NB Canada
    Posts
    5
    i have stuffed the boiler compartment with mineral wool insulation already , that helps the pid a bit an hopefully easier on generator load.

  4. #4
    Senior Member
    Join Date
    May 2014
    Location
    Kansas City
    Posts
    1,086
    I have no idea if it would help or not... but one thing you may consider is a RV tank heater. They are basically electric blankets to keep RV water tanks from freezing. Low wattage but they also don't get the water very warm.

 

 

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