RESUN CHILLER CL280 VS CL450 FOR 2FT TANK?

[marble]

Dear Reefers

Any idea 4 a 2FT tank, which of the above chiller should I use & y? Does it meant tat running a bigger chiller can save more electricity bill as it cools d tank much faster and tat using d right size chiller will do a much slower job?

I m still comtemplating which 1 to buy nw. Haiz...

Pls advise me.

[hammy]

Dear Reefers

Any idea 4 a 2FT tank, which of the above chiller should I use & y? Does it meant tat running a bigger chiller can save more electricity bill as it cools d tank much faster and tat using d right size chiller will do a much slower job?

I m still comtemplating which 1 to buy nw. Haiz...

Pls advise me.

i have used a CL280 on a 100litres before. no problem at that time.

[marble]

i have used a CL280 on a 100litres before. no problem at that time.

mine is a 130L tank...

Some told me cl280 will b enough....

Some told me cl450 will b beter....but it kicks in more often for shorter duration compare to cl280 wic kick in for longer duration. So does it mean it save more electricity if it kicks in short duration for cl450 but more freq???)

hmm.....

[tjchan]

using a CL280 for my 2ft x 16" x 16" tank. Can chill to 25 deg quite well.

[marble]

using a CL280 for my 2ft x 16" x 16" tank. Can chill to 25 deg quite well.

how often does it kicks in???n for how long????tks

[tjchan]

used to kick in for 10min every about 20min.... now i set it to run on timer to be on 20min every 40min because my thermostat is faulty. this 1:2 ratio efficiently helps keep my temp around 25-26 deg.

[reeftask]

CL280 can do the job. But what if want to upgrade or suddenly want to share with another new tank? Advisable to get the bigger CL450.

[marble]

CL280 can do the job. But what if want to upgrade or suddenly want to share with another new tank? Advisable to get the bigger CL450.

i wont upgrade for e nx 3yrs i think...

have upgrade fm 3ft to 4ft n now aft rest for abt 8mths,im back to e hobby again..mostly bec my wife likes it..so i will have to put in e hard work again lor.....

mine is a rsm tank...so cl280 will be enough is it????

anyone can advise???

tks

[kareen]

Calculate your load such as pumps/wavemaker/lighting wattage and then the desired maintain temperature verse the ambient temperature first.

Use the jbj chiller sizing to get a rough estimate. Play with the figures slowly to get a feel of the tolerance level. If you find that tolerance level not good enough then by all means roll to a bigger capacity chiller.

Electricity consumption is a matter of energy used in time. A big part of whether a bigger capacity chiller saved you more $$, also depend on the efficiency of the chiller. Resun chiller is known to kick in more frequent than other brand so what do you think?

Having say that what do you think of the petrol consumption on a 1000cc car and a 2000cc car?

Read this thread.... http://www.sgreefclub.com/forum/index.php?showtopic=63457

[marble]

Calculate your load such as pumps/wavemaker/lighting wattage and then the desired maintain temperature verse the ambient temperature first.

Use the jbj chiller sizing to get a rough estimate. Play with the figures slowly to get a feel of the tolerance level. If you find that tolerance level not good enough then by all means roll to a bigger capacity chiller.

Electricity consumption is a matter of energy used in time. A big part of whether a bigger capacity chiller saved you more $$, also depend on the efficiency of the chiller. Resun chiller is known to kick in more frequent than other brand so what do you think?

Having say that what do you think of the petrol consumption on a 1000cc car and a 2000cc car?

Read this thread.... http://www.sgreefclub.com/forum/index.php?showtopic=63457

tks...

aft use e cal...

think cl280 is more then enough for my 130L tank....

[kareen]

Well, I'm glad that u understand now. BTW, u will probably experience a faster kick-in/out rate using CL280 as compared to say, Daeil or JBJ for the same horsepower....

[marble]

Well, I'm glad that u understand now. BTW, u will probably experience a faster kick-in/out rate using CL280 as compared to say, Daeil or JBJ for the same horsepower....

of course...

or else it wont b cheaper........kekeke

[cowgum]

Well, I'm glad that u understand now. BTW, u will probably experience a faster kick-in/out rate using CL280 as compared to say, Daeil or JBJ for the same horsepower....

Usually people experience faster kick-in/out rate for Resun chillers is because they require faster flow rate through the chiller. The fact that they kick-in/out fast is because they whole heat exchanger gets cold due to lack of incoming 'warm' water.

Kick-in/out rate seems to be a concern for everybody and as a sign of quality. Chillers that has controllers that allow you to set kick-in and kick-out temp are good i admit, provided you know how to set to cater for your setup.

In terms of performance, a longer kick-in/out rate would mean a more gradual change in temperature, whereas a shorter rate would mean the opposite. There is not 'correct' kick-in/out rate for whichever chiller because they are all affected by surrounding conditions.

In terms of life span of the chiller, more switches from ON & OFF would mean a shorter life. But where talking about 10 thousands or more of switches. My friends CL650 is running on a 500L pump compared to the recommended 2000L and they controller failed after nearly 3 years. Honestly in my opinion, for a 400+ chiller lasting over 2 years is already a steal.

[cowgum]

Calculate your load such as pumps/wavemaker/lighting wattage and then the desired maintain temperature verse the ambient temperature first.

Use the jbj chiller sizing to get a rough estimate. Play with the figures slowly to get a feel of the tolerance level. If you find that tolerance level not good enough then by all means roll to a bigger capacity chiller.

Electricity consumption is a matter of energy used in time. A big part of whether a bigger capacity chiller saved you more $$, also depend on the efficiency of the chiller. Resun chiller is known to kick in more frequent than other brand so what do you think?

Having say that what do you think of the petrol consumption on a 1000cc car and a 2000cc car?

Read this thread.... http://www.sgreefclub.com/forum/index.php?showtopic=63457

Does a 400W equipment running for 60mins defer from a 400W equipment running on and off for 80mins with a 10mins interval of 20mins runnning each time?

1 kilowatt-hour = 1KW running for 1 hour

Scenario A

400W for 60mins = 0.4KW-H

Scenario B

400W for 20mins = 0.13KW-H

0W for 10mins = 0

400W for 20mins = 0.13KW-H

0W for 10mins = 0

400W for 20mins = 013KW-H

[cowgum]

Dear Reefers

Any idea 4 a 2FT tank, which of the above chiller should I use & y? Does it meant tat running a bigger chiller can save more electricity bill as it cools d tank much faster and tat using d right size chiller will do a much slower job?

I m still comtemplating which 1 to buy nw. Haiz...

Pls advise me.

You should get a CL280. CL450 is much too powerful for a 2ft. CL450 would kick-in/out more often as it should because you would most probably use an under size 800l/hr pump, unless you don't mind using a 1500l/hr pump.

[reeftask]

Does a 400W equipment running for 60mins defer from a 400W equipment running on and off for 80mins with a 10mins interval of 20mins runnning each time?

1 kilowatt-hour = 1KW running for 1 hour

Scenario A

400W for 60mins = 0.4KW-H

Scenario B

400W for 20mins = 0.13KW-H

0W for 10mins = 0

400W for 20mins = 0.13KW-H

0W for 10mins = 0

400W for 20mins = 013KW-H

When compressor starts, there will be more electricity needed for kicking in.

Compressor running too long will also cause it no rest and internal bearing bush wear out faster. Kick in and out too frequent will shorten compressor coil life. It really hard to advise when you dont have the data.

Its like a car. 1000cc car if always runs at 110km/hr and long distance will damage faster than a 1600cc car. But if you always uses at 80km/hr and short distance, 1000cc car is more worth.

If you plan not to upgrade for these 3 yrs, its advisable to use CL280.

[cowgum]

The more electricity needed for kicking in happens in 1 sec and stabilizes in 2-4 seconds.

Totally agree with reeftask. Just go with CL280, don't need to think so much.

[RedStar]

hi there, is the CL280 noisy when in operation?

[reeftask]

hi there, is the CL280 noisy when in operation?

All Resun sound operation are ok but no idea of 1/2 hp series. just fan noise is heard if you stand in front and listen. Its considered normal and good. Only thing is the stopping sound very loud. Some ppl said the sound is "Piang!" and some said "boong!" There are however some described the sound like: "bong!", "bang!", "dong!",..... However there is no ppl saying the sound like "bomb!"

[marble]

The more electricity needed for kicking in happens in 1 sec and stabilizes in 2-4 seconds.

Totally agree with reeftask. Just go with CL280, don't need to think so much.

tks bro for e advise...

So e pump i shld get a lower flow rate one??thinking of getting a 1000L/hr pump...mine is a RSM tank so e pump will b at e bk compartment pumping water dw then bk up again...E length of e hose shld b abt 2M long...

[kareen]

Does a 400W equipment running for 60mins defer from a 400W equipment running on and off for 80mins with a 10mins interval of 20mins runnning each time?

1 kilowatt-hour = 1KW running for 1 hour

Scenario A

400W for 60mins = 0.4KW-H

Scenario B

400W for 20mins = 0.13KW-H

0W for 10mins = 0

400W for 20mins = 0.13KW-H

0W for 10mins = 0

400W for 20mins = 013KW-H

At first look, I thought there was really a saving... then after a quick cal then I realise that the 0.01 saving is due to the rounding off of decimal point... Hence, it is the same if no rounding off.

But in practical point of view, one need to consider other factors such as is the wear and tear due to the kick-in/out interval and compressor workload, etc.

[kareen]

Usually people experience faster kick-in/out rate for Resun chillers is because they require faster flow rate through the chiller. The fact that they kick-in/out fast is because they whole heat exchanger gets cold due to lack of incoming 'warm' water.

Kick-in/out rate seems to be a concern for everybody and as a sign of quality. Chillers that has controllers that allow you to set kick-in and kick-out temp are good i admit, provided you know how to set to cater for your setup.

In terms of performance, a longer kick-in/out rate would mean a more gradual change in temperature, whereas a shorter rate would mean the opposite. There is not 'correct' kick-in/out rate for whichever chiller because they are all affected by surrounding conditions.

In terms of life span of the chiller, more switches from ON & OFF would mean a shorter life. But where talking about 10 thousands or more of switches. My friends CL650 is running on a 500L pump compared to the recommended 2000L and they controller failed after nearly 3 years. Honestly in my opinion, for a 400+ chiller lasting over 2 years is already a steal.

Does a higher flowrate pump really helps to 'slow' down the kick-in/out interval in Resun? Anyone?

[Ah-lim]

All Resun sound operation are ok but no idea of 1/2 hp series. just fan noise is heard if you stand in front and listen. Its considered normal and good. Only thing is the stopping sound very loud. Some ppl said the sound is "Piang!" and some said "boong!" There are however some described the sound like: "bong!", "bang!", "dong!",..... However there is no ppl saying the sound like "bomb!"

lol

Funnyyyyy

[marble]

jzt got my cl280...

was amaze by e fact tat it runs when there is a temp diff of 1 degree...

Unlike e cl650 wic runs only when temp diff by 2degree....

[reeftask]

Does a higher flowrate pump really helps to 'slow' down the kick-in/out interval in Resun? Anyone?

thats a good question. amkes me scratching my head. I have no idea tho. But after thinking maybe no difference. ummm, maybe.

"BOMB!" Whose chiller is that? not mine. I think the next person who comes in here.