I have been all-grain brewing for a couple years now on a pretty simple 2 tier gas system. I'm very interested in moving into the electric design and I think I've got a great location for it in my garage with a 240v source that I can have an electrician wire up for me. I have some questions as to if what I'm envisioning will work well. I brew almost exclusively 5 gal batches but like having the flexibility of being able to handle a 10 gal batch if I decide I want to.
I'm not interested in totally automating my brewing experience. I don't mind switching hoses around and monitoring temps some. The whole Kal system looks super cool, don't get me wrong, but I don't have the expertise or care to spend that kind of money to build something that pimped out. I'm thinking more of having a HLT that I can just dial in a temp and have it held at that temp automatically. I use batch sparging and would like to keep it that way. I'm thinking about a totally insulated keg-MLT that I can just mash in and come back at the end of the 1 hr mash and drain to boil kettle. Finally, an electric boil keggle. I'd like a single tier, 3 vessel system (I've already got a pump.)
Here are some of my questions:
1) Will a completely insulated sanke keg-MLT hold mash temps for an hour without any sort of HERMS or RIMS setup?
2) Can I build what I'm envisioning pretty inexpensively?
3) Do I need 2 pumps to run this type of system or can I do it with 1 pump?
Would appreciate any and all comments/suggestions and answers to my questions.