Closed Loop Hydronic Heating System Design

This is about installing hydronic radiant floor heating in a slab floor system.

Closed loop hydronic heating system design.

Heat loss example 10 x 15 room 9 ceilings indoor design temp. Nearly all closed loop hydronic heating and cooling systems are supposed to be filled with water or a mixture of water and antifreeze. Flow in a hydronic system is used to carry heat so an accurate. The only intentional air in the system is contained in the expansion tank.

The graph in fig. The circulator acts more like the motor on a ferris wheel. The heat output from most hydronic emitters be they baseboard radiant floor circuits or air handlers doesn t vary in proportion to the flow rate passing through them. Closed loop system and the weight of the water coming back down the return side acts as a counterbalance.

Hydronic system design with the bell gossett. While it was done as a new house was being built in my last house i poured a concrete floor on top of a wood framed floor system and could have put radiant heat in that as well. 70 outdoor design temp. Typically 10 of design flow rate yields about 50 of design heat output.

The system works via pex pipe a small pump a water heater and a thermostat.