For those of you not familiar with the Caleffi Idronics online articles or not in the habit of checking them out regularly the latest is a very thorough and detailed explanation of various different schemes for using mixing valves in hydronic systems. Great illustrations (a picture being worth at least 900 words) and even a few systems using solid fuel boilers and heat storage tanks.
They have a European slant on things, which can be very innovative by American standards, and do 'suggest' their own products in the process.
If you always wanted to buy Siegenthaler's books but didn't want to spend the money, their series of articles are nearly as detailed without as much algebra. And they are free.
http://www.caleffi.us/caleffi/en_US/Site/Technical_library/Idraulica_magazine/index.sdo
(As always, you may need to copy/paste this URL into your browser to get it to work).
They have a European slant on things, which can be very innovative by American standards, and do 'suggest' their own products in the process.
If you always wanted to buy Siegenthaler's books but didn't want to spend the money, their series of articles are nearly as detailed without as much algebra. And they are free.
http://www.caleffi.us/caleffi/en_US/Site/Technical_library/Idraulica_magazine/index.sdo
(As always, you may need to copy/paste this URL into your browser to get it to work).