Is a pool pump speed controller necessary ?

Pool pumps, pool filters and the plumbing of
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Denniswiseman
Swimming Pool Superstar
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Posts: 938
Joined: Tue 06 Sep, 2011 05:48
My Pool: 10k inground fibreglass, Telescopic Cover, Hayward Powerline pump, Quality filter with glass media, 27kw output heat pump, K-2006C test kit
Location: United Kingdom

Re: Is a pool pump speed controller necessary ?

Postby Denniswiseman » Fri 27 Oct, 2017 09:09

Hi John
My heat pump is a 5kw input with 27kw output under good temperature, obviously with the colder weather the output isn't as much plus the fact that it goes into defrost mode a lot more which stops the heating
A COP of 16 sounds as though it would be a lot more efficient but I'm loathe to just change untill something goes wrong with my existing model
I'm in Essex and the pool is fibreglass with sand backfilling, on reflection an insulating material would have been in order maybe some form of sprayed foam insulation before installation


Teapot
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Posts: 387
Joined: Tue 17 Oct, 2017 10:52
My Pool: 12 x 24 (45m3) liner pool, Triton TR60 filter with AFM glass media (Activate) and variable speed pump running 0.08HP
Location: UK

Re: Is a pool pump speed controller necessary ?

Postby Teapot » Sat 28 Oct, 2017 12:27

Hi Dennis, in your situation I wouldn't just swap either, If and when I get around to it I will let you know the results. Interesting the defrost point, hopefully with variable speed the defrost won't need to be as frequent, long etc. I will certainly make a point of asking. Yours must warm up reasonably quickly though with a potential 27 kw? Have you still got the pool running?
Denniswiseman
Swimming Pool Superstar
Swimming Pool Superstar
Posts: 938
Joined: Tue 06 Sep, 2011 05:48
My Pool: 10k inground fibreglass, Telescopic Cover, Hayward Powerline pump, Quality filter with glass media, 27kw output heat pump, K-2006C test kit
Location: United Kingdom

Re: Is a pool pump speed controller necessary ?

Postby Denniswiseman » Sun 29 Oct, 2017 05:32

Hi John
Yes I run the pool through out the year but sometimes in the winter the heat pump is on 24/7
This is balanced by the summer months when my retractable cover acts like a green house and I don't need additional heat source
Interested in any info for future reference
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Hsiao Chang
Pool Enthusiast
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Posts: 24
Joined: Thu 12 Oct, 2017 20:09
My Pool: 110m3; 1.5hp pump Qmax: 350l/min Hmax:14m ; sand filter dia: 450mm,33kw heat pump, piping : 50mm

Re: Is a pool pump speed controller necessary ?

Postby Hsiao Chang » Sun 29 Oct, 2017 21:42

Teapot wrote:Hi Hsiao, The interesting point about benefiting pool users and the world. I have converted a few pools to my system using very, very low power because a few people think like us. I expected to be inundated with customers but found the general attitude was "I can afford a pool, so I can afford the running costs" The fact it brings better benefits like cleaner water, less chemical usage and a big monetary saving seems to just pass a lot of people by.
Most of my pool work takes place in France (Europe) there are an estimated 1 million domestic pools in France, If those owners switched to running an eco setup like mine it would save France 2,000,000 tons of CO2 per year. When you sell a house in France you must have an energy survey carried out on the house but not including the pool if it has one. What is the single highest use of electricity? The swimming pool pump.


Welldone John :clap: an eco setup saves 2M tons of CO2 per year in France alone, that's remarkable. together we can achieve more .
Teapot
Swimming Pool Superstar
Swimming Pool Superstar
Posts: 387
Joined: Tue 17 Oct, 2017 10:52
My Pool: 12 x 24 (45m3) liner pool, Triton TR60 filter with AFM glass media (Activate) and variable speed pump running 0.08HP
Location: UK

Re: Is a pool pump speed controller necessary ?

Postby Teapot » Mon 30 Oct, 2017 03:12

Obviously any round number could be questioned, I used a University CO2 calculator for my own figures then just scaled up. With pumps being larger in The US the savings could be far bigger.
I reckon it will take a good few years before people really start to take notice.
Hsiao Chang
Pool Enthusiast
Pool Enthusiast
Posts: 24
Joined: Thu 12 Oct, 2017 20:09
My Pool: 110m3; 1.5hp pump Qmax: 350l/min Hmax:14m ; sand filter dia: 450mm,33kw heat pump, piping : 50mm

Re: Is a pool pump speed controller necessary ?

Postby Hsiao Chang » Tue 31 Oct, 2017 19:46

Teapot wrote:Obviously any round number could be questioned, I used a University CO2 calculator for my own figures then just scaled up. With pumps being larger in The US the savings could be far bigger.
I reckon it will take a good few years before people really start to take notice.


Hi John, How does a CO2 calculator work ? do you mind sharing a pic of your CO2 calculator with me please ? i am intrigued, if i have one like yours, i can calculate how much CO2 my water pump and heater saves , right ? is the calculation complicated please ? sorry for sooo many questions.
Teapot
Swimming Pool Superstar
Swimming Pool Superstar
Posts: 387
Joined: Tue 17 Oct, 2017 10:52
My Pool: 12 x 24 (45m3) liner pool, Triton TR60 filter with AFM glass media (Activate) and variable speed pump running 0.08HP
Location: UK

Re: Is a pool pump speed controller necessary ?

Postby Teapot » Wed 01 Nov, 2017 15:15

Hi Hsiao, I just googled for one and got a calculator from a UK university, It was based on UK energy production, we have coal fired and a little nuclear it may well be different where you are. It was working on the power used by any domestic item you keyed in and worked out the amount of CO2 from the various ways of generating electricity in the region. I bet you can find one local to you which maybe more accurate.
Hsiao Chang
Pool Enthusiast
Pool Enthusiast
Posts: 24
Joined: Thu 12 Oct, 2017 20:09
My Pool: 110m3; 1.5hp pump Qmax: 350l/min Hmax:14m ; sand filter dia: 450mm,33kw heat pump, piping : 50mm

Re: Is a pool pump speed controller necessary ?

Postby Hsiao Chang » Thu 02 Nov, 2017 01:43

Thank you John
Hsiao Chang
Pool Enthusiast
Pool Enthusiast
Posts: 24
Joined: Thu 12 Oct, 2017 20:09
My Pool: 110m3; 1.5hp pump Qmax: 350l/min Hmax:14m ; sand filter dia: 450mm,33kw heat pump, piping : 50mm

Re: Is a pool pump speed controller necessary ?

Postby Hsiao Chang » Tue 21 Nov, 2017 19:38

Hi John, Hi Dennis,I got this pump speed controller finally, and it works. they suggested me to buy a power meter so that can read directly the power consumption of it , i let them install it and showed me, when running at max. speed, the meter reads 756W( if i didnt remember wrong ) and when at lowest speed, it reads 100W something like that ....
Denniswiseman
Swimming Pool Superstar
Swimming Pool Superstar
Posts: 938
Joined: Tue 06 Sep, 2011 05:48
My Pool: 10k inground fibreglass, Telescopic Cover, Hayward Powerline pump, Quality filter with glass media, 27kw output heat pump, K-2006C test kit
Location: United Kingdom

Re: Is a pool pump speed controller necessary ?

Postby Denniswiseman » Wed 22 Nov, 2017 04:54

Hi Hsiao
Can you post details and costings for others as that seems excellant and can offer alternatives
That is running at full speed it's 3/4 kw down to a light bulb

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