Comparison of power consumption of different chillers

[Shadow]

The only true way of measuring the power consumption is through the current. There are some 3 pins digital meters these days that do that.

Yes, you give me your artical and I measure it for you I wont return it though

[Goondoo]

Yes, you give me your artical and I measure it for you I wont return it though

I do not own any Artica....
but you may go measure my Antarctica if you are interested
You need to pay for your way there yourself though.

[StanChung]

When it's too good to be true then it probably is. Anyway, there's lots of assumptions. A 1000W chiller does not need to kick in as often as a 300W chiller.
A 50W chiller maybe working 24/7 compared to a higher powered chiller.
Unlike cars, the bigger chiller doesn't need to carry it's own weight and the weight of the larger chassis to support it.

[Ebi]

I think the majority here could be right.
Since Power = V x I x Power factor, so for the rated 115V and 2 Amps, Power would be somewhere around 200W-220W, still slightly less than some other makes of simliar capacity. So I guess power consumption, and hence $ savings is minimal, unless it is running 24/7.

The starting current is around 8Amps (someone who had actually measured @ 115V), the 2Amps is only the running current.
So it probably translates to: If frequent start/stop is encountered, then the expected "savings" from the lower running current will not be realised.

I have seen an aircon unit (Sanyo) that actually specifys the Cooling Capacity and the Cooling Consumption Power in kW/W.
e.g. here are the specs:
Cooling Capacity = 1.9kW = approx. 6500 Btu
Cooling Cosumption Power = 880W
Cooling Current = 4Amps
Starting Current = 13Amps
Rating Voltage & Frequency = 230V 50Hz
Simplifying, Power Consumption = V x I x pf = 230 x 4 x pf = 880W

So I guess the arctica mini may actually be consuming around 200W and not the 50W. I am not sure what the 50W or 1/15HP indicates. If they are referring to the Cooling Capacity, then it translates to only 170.6 Btu.

But then again if a refrigerator was used for comparison;
e.g. the Mitsubishi Electric MR-260U (260 litres), which specifys kWh/year @ 431, this would roughly translates to just under 50Wh!!! ...
Which makes the Arctica 50W seem not too impossible!!!

Now I am even more confused...

[Shadow]

alamak from online converter 1 watt = 0.00134102209 horsepower

50W = 1/15 hp and 75W = 1/10 hp .... haha...now it is clear

[StanChung]

I thought you knew that?

[Shadow]

now I did not, I just feel strange that Artica 1/10 consume only 75W where other brand around 300W. I was guessing that it was not correct because the current stated on the box is way too much for 75W. At this point all my reply only guess until I try to conver this 50W to hp and btu. The artica web site is miss leading although thecnically they are not wrong.

[StanChung]

So meaning you still dispute this 50-75W rating?

[Shadow]

not for me

[StanChung]

So the artica chillers are super efficient compared to Resun/Hailea etc?

[Shadow]

nope, the same

[williamng]

That 50W is just the cooling capacity, not the power consumption. Based on what Robert mention, it just tell u it is a 1/10 HP chiller. That's all

[Shadow]

Stan know, he is just pulling my leg

[StanChung]

LOL, I was pretty confused and excited at the same time. That I was really on the verge of discovering a secret of saving a heap on electricity bills. No such luck.

[williamng]

Seriously I hope so but competitors are usually very close to one another in terms of technology. 6 times power savings is pretty unlikely.

[mobile2007]

Actually, in the industry, traditionally the motor, engines, generator, compressors, mechanical devices/torque are always rated in term of horsepower.

1 horspower == 745 watts

So, for the artica mini, there is nothing wrong to rate their chiller in term of the compressor horsepower. As the cooling power highly depends on the power of the compressor motor.

However, total power consumption does not equal to power rating of the compressor motor.

Well, they didn't really trick you, as they also have stated their power consumption in the specification, right?

[Shadow]

The problem is they stated both hp and watt as seen below. It does not mention power consumption and it does not even mention about current.

Thus people easily take "Capacity of compressor" as "power consumption" since it is in watt.

[ranmasatome]

wa.... this is a pretty cool topic now..hahaha..
Think i understand what you're refering to Richard.

[Ebi]

Hi Shadow-san,

Think you are refering to the Daeil model. The Arctica DBA-075 states a current (running) of 2.63A @ 115V. See link: http://www.marinedepot.com/ps_ViewIt...CHINQCBC&tab=1

[Ebi]

Errr... by the way. I've managed to insulate the cannister and HOB filter housings (in/out hoses are already insulated) and power savings appear to be in the region of 15%
Will know for sure when i get my PUB bill at the end of the month