Stemming from another thread on geothermal HVAC units:
I'm not understanding the basics here.
You have a 1/2" pipe.
You have 60psi of pressure on this pipe.
You WANT 2 GPM flow rate.
By definition, its going to take 1 minute to get 2 gallons through the pipe.
How does increasing or decreasing the pressure change anything if the flow rate is all you are concerned with?
I've been told that 10psi is all that is needed for a geothermal HVAC application, yet my well pressure tank setup is providing (or set to) around 60psi. Good for sprinklers, bad for HVAC.
Would letting the current 2hp pump continue to feed the pressure tank (set to 60psi), and then that feed the sprinklers, and another line T off of the feed (before the pressure tank), with a CSV set to 10-20 psi, then feed the HVAC run ?
So I assume under this arrangement, the pressure tank fills, and nothing else happens there until you call for irrigation. (very little of what my well is used for).
The HVAC units coming on and off will be drawing water straight from the pump, via a CSV, and supposedly drawing less power than feeding both the irrigation system and the HVAC system from the pressure tank at 60 psi ?
What if all HVAC units shut off, which equals no water demand - what does the CSV do ? What tells the pump to turn off ?
I guess I'm just a little slow.
I'm not understanding the basics here.
You have a 1/2" pipe.
You have 60psi of pressure on this pipe.
You WANT 2 GPM flow rate.
By definition, its going to take 1 minute to get 2 gallons through the pipe.
How does increasing or decreasing the pressure change anything if the flow rate is all you are concerned with?
I've been told that 10psi is all that is needed for a geothermal HVAC application, yet my well pressure tank setup is providing (or set to) around 60psi. Good for sprinklers, bad for HVAC.
Would letting the current 2hp pump continue to feed the pressure tank (set to 60psi), and then that feed the sprinklers, and another line T off of the feed (before the pressure tank), with a CSV set to 10-20 psi, then feed the HVAC run ?
So I assume under this arrangement, the pressure tank fills, and nothing else happens there until you call for irrigation. (very little of what my well is used for).
The HVAC units coming on and off will be drawing water straight from the pump, via a CSV, and supposedly drawing less power than feeding both the irrigation system and the HVAC system from the pressure tank at 60 psi ?
What if all HVAC units shut off, which equals no water demand - what does the CSV do ? What tells the pump to turn off ?
I guess I'm just a little slow.