心急人請教Arctica DBE-250

keim

我有個用電測試器 check 過 DBE-75 (聲稱75W; cooling amps watts = 450w) 同 DBE-200 (聲稱180W; cooling amps watts = 1,000w).   開動時實際用電量分別為 160-175w 及 360-380w 之間. c hing 可視乎每日實際啟動時間計算出每月的用電量及電費.
(dbe-250 said 250w, guess actual watts around 525w)

keim

If your chiller turn on every one hour for 20 mins each time, the electricity consumption is around $130 only (525 x 20/60 x 24 hrs x 31 days) / 1000 .... assuming @$1 ... why ar C hing .. just a bit higher that your calculation (btw, your formula ... with the result of $108 is wrong )