Last month’s Modern Hydronics & Heat Pumps webinar briefly discussed the importance of low water temperatures when applying air-to-water or water-to-water heat pumps.  The December 12  Modern Hydronics & Heat Pumps webinar picks up where last month’s webinar left off.  It will discuss various heat emitter options, ranging from heated floors to radiant wall and ceiling panels, panel radiators, fan coils, and air handlers.  It will also show how to evaluate existing cast-iron radiators for use in lower-temperature systems.  The practical aspects of applying each type of heat emitter will be presented along with performance estimating methods.

Learning Objectives:
1. Understand how the water temperature supplied to heat emitters affects heat pump performance.
2. See how several types of radiant panels are constructed and how they perform.
4. Learning practical aspects of installing several types of heat emitters.
5. Understand the concept of outdoor reset control.

Talking Points:
1. Which provides more heat output at a given water temperature - a heated ceiling panel or a heated wall panel of identical construction?
2. What are the application details for a “thin-slab” floor heating system?
3. How much heat can an old cast-iron radiator provide when operated at 100ºF average water temperature?
4. What are the strengths and limitations of heated concrete floor slabs?