隨著(zhu)國際上(shang)能源短(duan)缺問題日益(yi)突出，即熱(re)式電熱(re)水器以瞬間(jian)升溫（3秒），無須等(deng)待，省(sheng)(sheng)時、省(sheng)(sheng)電、省(sheng)(sheng)水、省(sheng)(sheng)心、省(sheng)(sheng)空(kong)間(jian)、環保，適合現(xian)代(dai)人們(men)快(kuai)節奏的生活需要，節省(sheng)(sheng)了寶貴時間(jian)。具(ju)體表現(xian)如下：
1. 省時(shi)：儲水(shui)(shui)式電(dian)熱(re)(re)水(shui)(shui)器在使用前要(yao)經過長(chang)時(shi)間的(de)預(yu)熱(re)(re)過程，在冬季使用一臺80升(sheng)的(de)儲水(shui)(shui)式電(dian)熱(re)(re)水(shui)(shui)器，要(yao)等2個多小時(shi)，很浪費時(shi)間。而即熱(re)(re)式電(dian)熱(re)(re)水(shui)(shui)器即開(kai)即熱(re)(re)，隨時(shi)都(dou)能洗澡，無須提前預(yu)熱(re)(re)，可以節約(yue)用戶(hu)寶貴的(de)時(shi)間。
2.
省(sheng)(sheng)電(dian)(dian)(dian)(dian)：即熱(re)(re)(re)(re)式(shi)電(dian)(dian)(dian)(dian)熱(re)(re)(re)(re)水(shui)(shui)(shui)器(qi)(qi)(qi)的(de)(de)功率(lv)(lv)看起來較大，但是(shi)(shi)比(bi)(bi)傳(chuan)統(tong)的(de)(de)儲水(shui)(shui)(shui)式(shi)電(dian)(dian)(dian)(dian)熱(re)(re)(re)(re)水(shui)(shui)(shui)器(qi)(qi)(qi)還要省(sheng)(sheng)電(dian)(dian)(dian)(dian)，這是(shi)(shi)因(yin)為(wei)雖然即熱(re)(re)(re)(re)式(shi)熱(re)(re)(re)(re)水(shui)(shui)(shui)器(qi)(qi)(qi)的(de)(de)額定功率(lv)(lv)達到5KW—8KW，根據能(neng)量(liang)(liang)守恒定
律，功率(lv)(lv)大并不(bu)(bu)等于耗能(neng)大（功率(lv)(lv)×時間(jian)(jian)＝能(neng)量(liang)(liang)），與貯(zhu)水(shui)(shui)(shui)式(shi)電(dian)(dian)(dian)(dian)熱(re)(re)(re)(re)水(shui)(shui)(shui)器(qi)(qi)(qi)相比(bi)(bi)，即熱(re)(re)(re)(re)式(shi)熱(re)(re)(re)(re)水(shui)(shui)(shui)器(qi)(qi)(qi)以瞬(shun)間(jian)(jian)升溫，無須等待(dai)，省(sheng)(sheng)時、省(sheng)(sheng)水(shui)(shui)(shui)、省(sheng)(sheng)空間(jian)(jian)、環保(bao)，水(shui)(shui)(shui)電(dian)(dian)(dian)(dian)隔離系統(tong)實現(xian)
100%安全。關(guan)(guan)于即熱(re)(re)(re)(re)式(shi)熱(re)(re)(re)(re)水(shui)(shui)(shui)器(qi)(qi)(qi)耗能(neng)問(wen)題，有(you)關(guan)(guan)專家曾(ceng)專門(men)在(zai)北京(jing)做過試(shi)驗，40L保(bao)溫較好(hao)的(de)(de)貯(zhu)水(shui)(shui)(shui)式(shi)電(dian)(dian)(dian)(dian)熱(re)(re)(re)(re)水(shui)(shui)(shui)器(qi)(qi)(qi)，一(yi)天24小時一(yi)點熱(re)(re)(re)(re)水(shui)(shui)(shui)不(bu)(bu)用，也需耗電(dian)(dian)(dian)(dian)1.2度
以上，并且天氣(qi)越冷耗電(dian)(dian)(dian)(dian)量(liang)(liang)越大。與此相比(bi)(bi)，即熱(re)(re)(re)(re)式(shi)熱(re)(re)(re)(re)水(shui)(shui)(shui)器(qi)(qi)(qi)節水(shui)(shui)(shui)、節電(dian)(dian)(dian)(dian)，因(yin)而國家把這類產(chan)(chan)品劃為(wei)節能(neng)產(chan)(chan)品。
“有(you)關(guan)(guan)人士通過實際使(shi)用，發(fa)現(xian)即熱(re)(re)(re)(re)式(shi)電(dian)(dian)(dian)(dian)熱(re)(re)(re)(re)水(shui)(shui)(shui)器(qi)(qi)(qi)比(bi)(bi)貯(zhu)水(shui)(shui)(shui)式(shi)電(dian)(dian)(dian)(dian)熱(re)(re)(re)(re)水(shui)(shui)(shui)器(qi)(qi)(qi)節電(dian)(dian)(dian)(dian)40%－65％，所以是(shi)(shi)最省(sheng)(sheng)電(dian)(dian)(dian)(dian)的(de)(de)，因(yin)為(wei)其所用的(de)(de)時間(jian)(jian)最少。
(1) 它即時增高所需用(yong)(yong)(yong)水(shui)(shui)(shui)的溫度，洗多(duo)少(shao)(shao)，燒多(duo)少(shao)(shao)，不(bu)用(yong)(yong)(yong)預熱、不(bu)會產(chan)(chan)生預熱的熱量散失；用(yong)(yong)(yong)多(duo)少(shao)(shao)水(shui)(shui)(shui)就放多(duo)少(shao)(shao)水(shui)(shui)(shui)，不(bu)會產(chan)(chan)生剩(sheng)余(yu)水(shui)(shui)(shui)會帶走許(xu)多(duo)熱量。不(bu)像傳統(tong)貯水(shui)(shui)(shui)式電熱水(shui)(shui)(shui)器使用(yong)(yong)(yong)前須燒熱整桶60升或80升水(shui)(shui)(shui)，造成時間和能源的浪費；
(2) 即(ji)熱(re)(re)(re)式電熱(re)(re)(re)水器它是(shi)以水控電，當開啟熱(re)(re)(re)水供應系統的龍頭(tou)，熱(re)(re)(re)水器即(ji)時生熱(re)(re)(re)。而(er)關(guan)閉龍頭(tou)后，熱(re)(re)(re)水器立即(ji)停(ting)止操作，由龍頭(tou)開關(guan)控制熱(re)(re)(re)水器同步進行。而(er)貯水式電熱(re)(re)(re)水器則(ze)是(shi)邊加熱(re)(re)(re)邊散熱(re)(re)(re)，即(ji)耗時，又耗電。
(3) 即熱式(shi)電(dian)熱水器它(ta)的功率(lv)(lv)是(shi)可調(diao)的，以20分(fen)鐘計(ji)算(suan)（一般人(ren)(ren)可以了），夏天洗澡成(cheng)本(ben)(ben)約0.15～0.45元(yuan)(yuan)/人(ren)(ren)，春秋(qiu)約0.58～0.74元(yuan)(yuan)/人(ren)(ren)，冬天約0.89～1.18元(yuan)(yuan)/人(ren)(ren)。 (耗(hao)電(dian)量=功率(lv)(lv)X時(shi)間)（成(cheng)本(ben)(ben)=耗(hao)電(dian)量X元(yuan)(yuan)/度）
3、省水(shui)(shui)(shui)：如果預熱(re)(re)(re)了一(yi)儲(chu)水(shui)(shui)(shui)罐熱(re)(re)(re)水(shui)(shui)(shui)您(nin)用不(bu)完，那就(jiu)很浪費(fei)(fei)，如果不(bu)夠用，那又很麻煩，這樣它就(jiu)既費(fei)(fei)水(shui)(shui)(shui)、又費(fei)(fei)電、更(geng)費(fei)(fei)錢。而用即熱(re)(re)(re)式熱(re)(re)(re)水(shui)(shui)(shui)器，您(nin)想用多(duo)少(shao)水(shui)(shui)(shui)就(jiu)加(jia)熱(re)(re)(re)多(duo)少(shao)水(shui)(shui)(shui)，絕不(bu)浪費(fei)(fei)熱(re)(re)(re)水(shui)(shui)(shui)。
4、省(sheng)心：調溫(wen)方便，水溫(wen)恒定，不會(hui)越(yue)洗(xi)越(yue)冷(leng)。
5、省空(kong)間：儲水(shui)式電(dian)熱水(shui)器都有龐(pang)大的儲水(shui)罐，占用了寶貴的室內空(kong)間，影響室內裝修(xiu)的美(mei)觀。還容易發(fa)生裝滿水(shui)的熱水(shui)器罐從墻上掉下來砸傷人的事故(gu)。即熱式熱水(shui)器體積很小，而且精美(mei)、小巧、安裝方便。
6、安裝(zhuang)方(fang)便(bian)：即(ji)熱(re)式(shi)電熱(re)水器體積小巧（僅(jin)有(you)雜(za)志大小），可(ke)安裝(zhuang)在浴室內使用(yong)，方(fang)便(bian)、安全(quan)、美觀，不(bu)占
位置，不(bu)妨礙(ai)吊頂，也(ye)無須(xu)通風(feng)設備；而傳統儲水式(shi)電熱(re)水器有(you)巨大的水箱，體積大、重(zhong)量大，使用(yong)時需安裝(zhuang)在承(cheng)(cheng)重(zhong)墻(qiang)上(shang)，因此必須(xu)考慮家居內的承(cheng)(cheng)重(zhong)是否能(neng)夠承(cheng)(cheng)
受。掛(gua)得太高(gao)又影響衛生間裝(zhuang)修效(xiao)果，操作也(ye)非常不(bu)方(fang)便(bian)。
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