Thu Apr 18, 2013 12:37 pm
I have the same setup that the OP is looking to build. I have found that pushing the wort from my pump through the hop rocket and then to my immersion chiller/whirlpool setup loses a lot of power and doesn't create an effective whirpool. Instead what I do is sanitize my hop rocket separately and start recirculating the wort with five minutes left to sanitize the whirlpool portion of my chiller, the hoses, and pump. I then hookup my sanitized hop rocket loaded with hops at the end of the boil and do a 30 min recirc with just the hop rocket and hot wort. After 30 mins i disconnect the hoses, drain any remaining wort out of the hop rocket into the kettle, and turn on my chiller and do a full speed whirlpool and chill down to pitching temp. The wort is still about 180 at the end of the 30 min hop rocket recirc before i begin cooling so DMS precursors are not an issue. Using this method I still get a nice hop cone in the bottom of my kettle and all the benifits of the hop pack and whirlpooling.
Also it should be noted that the amount of hops used in the hop rocket will impact the recirc rate. 3 ounces which is the max stated amount will greatly reduce the flow rate compared to 2 or 1 ounce, however to get a good whirlpool that will chill your wort quickly and form a nice hop cone, it works best to remove the hop rocket from the equation.