Reliable Hybrid Water Boiler with high Cost-Efficiency Ratio

Boris romanov · 02-18-14, 02:12 PM

Hello,

In this thread I would like to show my Hybrid Water Boiler that uses ground energy.
Hope this information will be useful.

The design of my energy efficient water boiler is based on GE's 50-gallon hybrid electric water heater.
In the below setup I use the Whirlpool's 40-gallon regular electric water heater as an extra tank and as a base to mount all necessary components. It also serves as a failover option, in case something happens to my hybrid boiler.

The heat pump's operating range is 7°C to 49°C (45°F to 120°F). If ambient temperature is outside of this range, the heat pump will turn off and the boiler will use electricity to heat water until the ambient temperature returns to within the operating range.

My basement's 6"concrete slab plays the role of a heat/cold exchanger. And when cool air ( 4°C-7°C), generated by the heat pump sinks, the slab absorbs it very efficiently.
During the heating seasons the ground temperature (temperature of the concrete slab in my basement) is very stable: about 10°C to 14°C (50°F to 57°F).

A large, unconditioned basement that is also perfectly isolated from seasonal temperature extremes represents one of the key elements of my success.

Boris Romanov

02-18-14, 02:12 PM	#1
Boris romanov Banned Join Date: Feb 2014 Location: Grahamsville, NY Posts: 23 Thanks: 0 Thanked 0 Times in 0 Posts	Reliable Hybrid Water Boiler with high Cost-Efficiency Ratio Hello, In this thread I would like to show my Hybrid Water Boiler that uses ground energy. Hope this information will be useful. The design of my energy efficient water boiler is based on GE's 50-gallon hybrid electric water heater. In the below setup I use the Whirlpool's 40-gallon regular electric water heater as an extra tank and as a base to mount all necessary components. It also serves as a failover option, in case something happens to my hybrid boiler. The heat pump's operating range is 7°C to 49°C (45°F to 120°F). If ambient temperature is outside of this range, the heat pump will turn off and the boiler will use electricity to heat water until the ambient temperature returns to within the operating range. My basement's 6"concrete slab plays the role of a heat/cold exchanger. And when cool air ( 4°C-7°C), generated by the heat pump sinks, the slab absorbs it very efficiently. During the heating seasons the ground temperature (temperature of the concrete slab in my basement) is very stable: about 10°C to 14°C (50°F to 57°F). A large, unconditioned basement that is also perfectly isolated from seasonal temperature extremes represents one of the key elements of my success. Boris Romanov Last edited by Boris romanov; 02-18-14 at 03:33 PM..