John Siegenthaler: A simple way to set up lead/lag heat sources Who’s on first? John Siegenthaler, P.E. February 27, 2020 I’m fortunate to be living next door to a very unique hydronic heating/cooling system.Read More
John Siegenthaler: Be explicit on tubing depth in a slab Unnecessary compromise John Siegenthaler, P.E. July 11, 2019 A commonality among all renewable energy heat sources is that they perform best when coupled to low-temperature hydronic distribution systems. Read More
Details for bypassing thermal storage Backflow-prevention devices guard fire protection water entering potable supply. John Siegenthaler, P.E. October 24, 2017 Through and around.Read More
Flow rate, heat output and Delta-T John Siegenthaler, P.E. September 28, 2017 Some things don’t vary proportionally.Read More
Injection mixing from thermal storage John Siegenthaler, P.E. February 27, 2017 An established technique that can be used in renewable energy systems.Read More
Controls and documentation for a sophisticated heating system Orchestration of a heating system. John Siegenthaler, P.E. September 28, 2016 What remains is to assemble a control system that can orchestrate all the required subsystems.Read More
A new method for heating domestic water in pellet-fired boiler systems Domestic water heating is treated using an indirect water heater controlled as a priority load. John Siegenthaler, P.E. August 31, 2016 Many pellet boilers are retrofitted into homes with existing hydronic heating.Read More
Different ways to pipe a thermal storage tank Four-pipe vs. two-pipe. John Siegenthaler, P.E. March 22, 2016 Different ways to pipe a thermal storage tank.Read More
Renewable Heating Design: Geothermal heat pumps John Siegenthaler, P.E. December 21, 2015 With the right design, geothermal heat pumps can work in a variety of applications.Read More
A sampling of low-temperature heat emitters John Siegenthaler, P.E. December 4, 2014 When you look at the big picture of hydronic heating on a worldwide basis, one of the most evident trends is migration toward low-temperature distribution systems. Read More