EcoRenovator - View Single Post - WtW Efficiency gain of lower temp. Load Tank

buffalobillpatrick · 05-08-14, 02:55 PM

NiHaoMike,

"Even better is to only raise the tank temperature using the heat pump if it's not keeping up with demand. "

A heat source not keeping up with demand, is an issue that I haven't worked out yet.

Kind of like, when to down shift going up a hill.

I could do a time delay & check status to determine if gaining or loosing ground.

Sources of info such as:

http://www.geoexchange.org/forum

Recommend 2 tanks with desuperheater.

I believe that buffering is necessary between heat source & sink.

My 2 ton HP will, in all cases, output more heat than any 1 or 2 hydronic zones require.

Some buffering will take place in slab floors, but unlike some French systems I've read about, I don't want to overshoot room thermostat for a bit of eff.

I have some nice PID Tekmar thermostats that have a air sensor & a slab sensor to help prevent over & under shoot.

05-08-14, 02:55 PM	#112
buffalobillpatrick Master EcoRenovator Join Date: Mar 2014 Location: Florissant, Colorado Posts: 599 Thanks: 814 Thanked 59 Times in 55 Posts	NiHaoMike, "Even better is to only raise the tank temperature using the heat pump if it's not keeping up with demand. " A heat source not keeping up with demand, is an issue that I haven't worked out yet. Kind of like, when to down shift going up a hill. I could do a time delay & check status to determine if gaining or loosing ground. Sources of info such as: http://www.geoexchange.org/forum Recommend 2 tanks with desuperheater. I believe that buffering is necessary between heat source & sink. My 2 ton HP will, in all cases, output more heat than any 1 or 2 hydronic zones require. Some buffering will take place in slab floors, but unlike some French systems I've read about, I don't want to overshoot room thermostat for a bit of eff. I have some nice PID Tekmar thermostats that have a air sensor & a slab sensor to help prevent over & under shoot. Last edited by buffalobillpatrick; 05-08-14 at 03:20 PM..