套房電熱水器這樣算很多嗎? - 省錢
By Todd Johnson
at 2018-01-12T11:56
at 2018-01-12T11:56
Table of Contents
我有實測過:
實測物:儲熱式電熱水器,標榜4000瓦30加侖,老機器,實測才3000瓦在跑。
室外溫度:12-17度,電熱水器放在室內可關窗保溫之處。
做法一:開開關關
燒40分鐘上升14度C吃2度電
燒30分鐘上升10度C吃1.5度電
燒20分鐘上升 6度C吃1 度電
燒15分鐘上升 2度C吃0.7度電
每次都燒到50-55度C,隔天都會降溫到40-45度C,這冬天洗45度C會冷,所以要天天燒30-40分鐘。
*觀察10天:平均每日2.75度電(含每天電腦/電視120瓦4小時+冰箱24小時)
做法二:一直開著不管它
電熱水器會自動保持在60度水溫,會補加熱,每次自動補燒5-8分鐘,間隔不知。
*觀察10天:平均每日3.75度電(含每天電腦/電視120瓦4小時+冰箱24小時)
心得:我覺得用每日多1度電的代價,換到隨時可洗澡不必等30分鐘是值得的。儲熱式目的就是要發揮它「儲存熱水的便利性」,不然每天洗澡只洗約1/10桶熱水,剩下約9/10桶隔天一樣冷掉要重新燒,沒省到能源又失去便利性?
我以前住獨立門戶套房用瞬熱式有9段冬天才開到第5段約5000瓦,每天洗澡10分鐘,加熱實際跑5分鐘,冬天套房兩個月電費帳單才150元。
其實瞬熱式或儲熱式剛開水都要等20秒放流冷水(儲熱式的牆內管壁冷卻/瞬熱式的機內熱管預熱)所以我覺得兩者便利性打平。
如果新家要買,建議買每間廁所一台瞬熱式,省電與方便性兼顧,當然貼一點直上瞬熱式數位恆溫,少那20秒冷水放流更好。以上供您參考。
※ 引述《style05 (style05)》之銘言:
: 之前都是住瓦斯熱水的
: 現在是電儲熱式,發現一個月熱水就要花300多塊
: 開30分鐘就關,然後再洗,大概2.0~2.5度左右
: 這樣算正常嗎?還是很多?
: 好像沒辦法更省?聽說可以調溫度?
--
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省錢
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