Shallow geothermics in real life...

[Externet]

Shallow geothermics. Always wanted to implement it; now I can and am ready.

There is now an unused fresh water well in my backyard, has a suction pump, thus should have a check valve at the bottom of the pipe, then I believe is not 'deep'. Canot be over ~30 feet. (Coastal North Carolina)

 

The well water temperature is somewhere near 60ºF.

Inserting an automobile radiator in the return side of the central heating/air conditioner duct, fed by the closed loop from a U in the well with a recirculation pump, should supply the dwelling with ~60ºF air, to the capabilities of BTU exchange minus losses.

 

In summer, for a ~85ºF weather, a delta t of around 25ºF; pretty decent, no airconditioner would be needed. Seems doable.

 

In winter, for a ~35ºF weather, a delta t of around 25ºF ; pretty decent, not much extra heating requiered from the outputted 60ºF to reach 70ºF desired BUT:

If the central heating system additional work heats up the house to ~70ºF; about THAT would be the return air temperature; rendering the geothermal plan unuseable, as if the inserted radiator has 60ºF, it would be counteracting and cooling a delta t of 10ºF instead !

 

Am I wrong somewhere? How could this case be used in winter? Many geothermic sites promote supplementary heating in winter even with not that much delta t. I do not see it possible now:-( . Is it about maintaining the dwelling at 60ºF while nobody is at home, then turning on the standard central heating during occupation hours? (And shutting the geothermal off then ?)

 

D----->R------>Rad----->H----->S----->D

For D=dwelling; R=return duct; Rad=radiator; H=heater; S=supply duct

Thanks,

Miguel

[ayeshaaakter]

Central air conditioner is morethan just the largest appliance in a home—it's part of a carefully designedsystem that also incorporates a thermostat and an array of ducts that deliverand circulate cooled air throughout the structure. In most cases, a centralair-conditioning system is a more energy-efficient choice for regularly coolinga home than using room air conditioners in three or four different rooms.

 

However, there's no gettingaround the fact that a central air conditioner can be fairly expensive topurchase—and that it must be installed by a qualified heating and cooling contractor.If your home doesn't have central air-conditioning—but does have a network ofducts for a forced-air furnace—you likely can use the same ducts for cooling,as long as they're the proper size and free of leaks and obstructions. On theother hand, if your home is heated by a boiler or electric baseboard units,you'll need to add a duct system, which can be both difficult andexpensive—especially in a multi-level home, where you might have to sacrificecloset space or build "chases" along walls or in corners to hold the ducts.

 

For more information, click here,

 

air conditioning