All Arctica Fans u can start throwing away ur Arctica chiller as ur chiller will never be able to rest 7hrs before it start to kick in again.
U rate a chiller by the running time ( how fast it can chiller down ) and not how long it takes to kicks in .
Tank temp goes up depends on the other equipments running in the tank that provided the heat load and the weather plays an important part too.
A tank in an aircorn room with a room temp of 24deg , the tank temp should be around + 1 to 2deg. Normal room temp in hdb is 30 deg in the day time it will take about 1hr or more to go up 1 deg (depends on what is yr tank size n the equipments use)
A 1/2HP chiller will take not more than an hr to chill 500L of water and takes another 1 and 1/2hr before it kicks in again.
The best is to run every 1000L of water to 1HP so make ur own caculation . Example 1500L will use a 1.5HP chiller.
If 1/2 HP chiller runing amp is 3.6 take about 1hr to chill down 1deg , 1 1/2 hr to start up.
1amp = 220w
3.6amp = 792w
1 day run 10hr = 10 X 792w = 7920w
1000w = $0.21 in PUB bill
7920w = $1.67 a day
31day = $51.77
So the faster u chill down the tank the more u save
Please list down the tank spec for those who use the wonderfull chiller so people can have a better idea when buying chiller.