Better system design

[Dogeatbird]

When it comes to gas management:

In the introduction of CO2 for calcium Reactors.

Or O3(ozone).

I have mentioned in other post about gas management.

I try not to use abbreviations as the discussion forum is multinational.

Use of a thermoelectric chiller in a calcium reactor can increase solublity of CO2; thus reducing the gas demand to maintain a desired reactor pH.

Also a similar effect can be achieved by introducing ozone into a recirculating reactor chamber; before discharging the effluent into the skimmer.

Lastly in regards to UV sterilizer;
A manifold on the input side:
Consisting of two ball valves link to two actuators can provide dual function. Parasite and algae/bacterial, as the actuators switch between the different valves; thus providing variable flow through the UV unit.

 

[Randy Holmes-Farley]

Use of a thermoelectric chiller in a calcium reactor can increase solublity of CO2; thus reducing the gas demand to maintain a desired reactor pH.

How does that make sense? Sure, lowering temperature increases solubility, but why would that mean you can lower the pH the same amount with less gas?

I think such reactors usually dissolve all of the gas added.

 

[TokenReefer]

Lastly in regards to UV sterilizer;
A manifold on the input side:
Consisting of two ball valves link to two actuators can provide dual function. Parasite and algae/bacterial, as the actuators switch between the different valves; thus providing variable flow through the UV unit.

If the desire is to target both and algae can be targeted using a higher flow rate but parasites require a lower flow (longer uv exposure time) rate don't you just set it to the lower requirement ? Longer dwell time will be (more) affective on algae as well.

 

[BeanAnimal]

If the desire is to target both and algae can be targeted using a higher flow rate but parasites require a lower flow (longer uv exposure time) rate don't you just set it to the lower requirement ? Longer dwell time will be (more) affective on algae as well.

To that end, what controls the actuators? Would a simple variable speed pump provide the same variable flow with less mechanics, points of failure and overall logic?

 

[Dogeatbird]

How does that make sense? Sure, lowering temperature increases solubility, but why would that mean you can lower the pH the same amount with less gas?

I think such reactors usually dissolve all of the gas added.

If the desire is to target both and algae can be targeted using a higher flow rate but parasites require a lower flow (longer uv exposure time) rate don't you just set it to the lower requirement ? Longer dwell time will be (more) affective on algae as well.

I never said anything about the amount of gas needed to lower pH. What I am saying is that the solubility of CO2 is affected by temperature. Thus the amount of carbonic acid increases with the amount of CO2 dissolved and maintained dissolved, until the acid is utilized for the disassociation of the calcium carbonate media.

And no not all the CO2 is utilized otherwise a gas pocket would not form at the top off the reactor.

Bottom line is CO2 dissolves more readily at lower temperature.

Ozone will react until it is either dissipated into atmosphere or disassociated into O2.

Variable flow actuated manifolds provides both flow rates, although not concurrently.

Allowed for a higher UV dose when desired and lower dose for bacterial/algae when desired.

Again it is rude and disrespectful to merely say that serves no purpose, when also unwilling to explore and consider all potential outcomes.

 

[Dogeatbird]

To that end, what controls the actuators? Would a simple variable speed pump provide the same variable flow with less mechanics, points of failure and overall logic?

Depending on type. Timer/controller.

Available in both AC/DC voltage.

Check out US Solid. PVC actuators.

Available as normally open or closed. That means when power is off return to closed or open status, can be converted between the two position if you order the wrong type. (Open or closed)

 

[Dogeatbird]

Lastly a pvc actuator also can be a back up check valve.

A normally closed, when provided power is open. Loss of power closes valve.

 

[KrisReef]

Might work in a cold water tank?

 

[Dogeatbird]

Yes, a v1-10 controllable pump can also vary output. How many are on the market and in production.

Also you can just have two Uv systems.

Yes, it is another joint in the plumbing, which could fail.

But if you are not willing to dedicate a single pump, variable(DC) or AC.

Actuators provide a solution/work around.

 

[Dogeatbird]

Might work in a cold water tank?

Thermoelectric chiller is not regulating entire system volume.

Meerly the localized volume of the reactor.

The actual effect and efficiency of
the thermoelectric chiller is dictated by the effluent discharge rate. Amount of water that enters and then exits the reactor/time period.

 

[BeanAnimal]

Again it is rude and disrespectful to merely say that serves no purpose, when also unwilling to explore and consider all potential outcomes.

Depending on type. Timer/controller.

Available in both AC/DC voltage.

Check out US Solid. PVC actuators.

Available as normally open or closed. That means when power is off return to closed or open status, can be converted between the two position if you order the wrong type. (Open or closed)

Nobody has been rude or dispretful to you.

Three points, two you ignored and one new:
1 - oscillating between flows is pointless. Increased dwell time covers everything that less dwell time does. So if parasite targeting is the goal then low flow covers the algae as well.

2 - if for some odd reason you desire both options, then a single manual valve covers both, unless this is inline with a return, but you mention actuated ball valves, They are on or off which defeats that purpose without a complex setup. I said a DC speed controlled pump would be far easier to implement, but still question to what end? Who said anything exclusively regarding 0-10v?

This hobby is full of variable speed centrifugal pumps with numerous control methods. You proposed actuated valves that need a control signal or circuit, and those that can do stepped opening need 0-10v or pulsed control.

3 - A ball valve has many uses. A spring return NC valve could certainly act as a check valve in any system, but that has nothing to do with the UV directly. Adding it is a benefit of your “better” system design is a stretch. It can still fail or become easily blocked or fouled. The spring return is not powered or strong. I use the US solid actuated valves (stainless version) on my outdoor water spigots. I used an actuated Hayward multi-port pool before I had an Ocean Motions.

Seeing the above responses, it certainly would appear that you are interested in arguing with people for the sake of argument and paraphrasing search results or AI feedback to do so. Too many non-sequitur responses to believe otherwise. You may take that as rude, but it is my observation. This is a fruitless conversation.

 

[Dogeatbird]

Nobody has been rude or dispretful to you.

Three points, two you ignored and one new:
1 - oscillating between flows is pointless. Increased dwell time covers everything that less dwell time does. So if parasite targeting is the goal then low flow covers the algae as well.

2 - if for some odd reason you desire both options, then a single manual valve covers both, unless this is inline with a return, but you mention actuated ball valves, They are on or off which defeats that purpose without a complex setup. I said a DC speed controlled pump would be far easier to implement, but still question to what end? Who said anything exclusively regarding 0-10v?

This hobby is full of variable speed centrifugal pumps with numerous control methods. You proposed actuated valves that need a control signal or circuit, and those that can do stepped opening need 0-10v or pulsed control.

3 - A ball valve has many uses. A spring return NC valve could certainly act as a check valve in any system, but that has nothing to do with the UV directly. Adding it is a benefit of your “better” system design is a stretch. It can still fail or become easily blocked or fouled. The spring return is not powered or strong. I use the US solid actuated valves (stainless version) on my outdoor water spigots. I used an actuated Hayward multi-port pool before I had an Ocean Motions.

Seeing the above responses, it certainly would appear that you are interested in arguing with people for the sake of argument and paraphrasing search results or AI feedback to do so. Too many non-sequitur responses to believe otherwise. You may take that as rude, but it is my observation. This is a fruitless conversation.

1: Actuated valves do not use a spring return.

Rather a capacitor that discharges with loss of power/ signal.

2: variable speed pumps still require setup manipulation to adjust output flow.

3:algae/ bacterial reproduction rates at higher frequencies(shorter time periods), then parasites.

4:control of actuator can be as simple as a timer/ switch on/off.

5:volume of water to be passed through a UV system, usually is the determining factor for the wattage of the UV bulb/housing. Thus determining pass over value of a system per unit time.

6; the actual amount of sterilization/irradiation is a complex function.

UV watt size, housing diameter, distance between quartz sleeve/housing, and flow rate.

 

[Dogeatbird]

My background and career was in Industrial Engineering.

My chief responsibility was in solution and repeatedly achieved outcomes.

No AI, and addressing potential problems and solutions through the discussion and argument of potential technologies.

A setting on a pump, whether through variable voltage; or restricting outflow mechanically, also does not address loss of efficiency due to pump fouling/ or exact reposition of valve.

The only way is to actively measure outflow, via a hall sensor.

CO2 saturation is a function of temperature. Solubility also decreases with temperature.

Although a greater amount can be held in colder water, atmospheric loss also increases with temperature.

Open a cold seltzer vs a warm seltzer which goes ‘flat’ first?