作者查詢 / ewings

總覽項目： 發文 | 留言 | 暱稱
作者 ewings 在 PTT [ Lifeismoney ] 看板的留言(推文), 共51則
限定看板：Lifeismoney
看板排序：
全部Military13584Kaohsiung2306Gossiping2266MRT1762Railway1435Aviation1357car1139DummyHistory918Mechanical767LAW734HatePolitics659Bus538PttLifeLaw525C_Chat418Tech_Job355Nantou320Stock240MobileComm213Physics193Warfare187C_ChatBM176Salary143toberich103E-appliance86Doraemon83L_TaiwanPlaz78NCIS58movie55Lifeismoney51AllTogether31SF30EAseries28Vietnam25AboutBoards24PhD24sex24Tainan21DiscoveryNGC20TaichungBun19NetRumor16Road16image15AfterPhD14facelift14joke14AirForce12bicycle12Acad-Affairs11WomenTalk11Gov_owned10StupidClown10ask-why8Android7NEMS6PC_Shopping6Boy-Girl5PttLaw5TY_Research5ASHS-95RN4Bank_Service4bicycle-tour4book4FLAT_CLUB4TigerBlue4creditcard3KERORO3Storage_Zone3studyteacher3TaichungCont3Teacher3XBOX3Anti-ramp2biker2Broad_Band2Bunco2China_Travel2Employee2Hamster2HBO2marriage2NTU_BOTDorm22PublicServan2Violation2ASM1B96310XXX1B97305XXX1B97310XXX1Baseball1Beauty1C_WorkBoard1CareerPlan1CATCH1CD-R1chatskill1ChemEng1consumer1CPU_CID7311Digitalhome1FCU-INS93B1FJU-ACCR941Free_box1hardware1home-sale1Japan_Travel1Lo-Sheng1MartialArts1media-chaos1MobilePay1money1NCCU08_JAPAN1NCTU_IAA971NDMC-N561NDMC-P911NEHS19th41NTU1optical1paranormal1pharmacist1Policy1PttHistory1TBBT1TKU_Software1Windows1Yunlin1<< 收起看板(124)
首頁
上一頁
1
下一頁
尾頁
[情報] 威技除溼機 16L 4799
[ Lifeismoney ]139 留言, 推噓總分: +49
作者: darknote - 發表於 2024/02/27 16:06(2月前)
68F→ewings: 去年11月才發生過除濕機自燃的意外，月初114.32.235.116 02/27 22:12
69F→ewings: 標準局才強制12家廠商召回產品。太便宜的114.32.235.116 02/27 22:12
70F→ewings: 除濕機我還不是很敢買，難保就是剛好人品114.32.235.116 02/27 22:12
71F→ewings: 差買到被摳斯盪到出bug的114.32.235.116 02/27 22:12
Re: [情報] 奇美16吋DC馬達遙控電風扇1599元
[ Lifeismoney ]228 留言, 推噓總分: +43
作者: memory940 - 發表於 2023/04/18 18:31(1年前)
17F→ewings: 買DC扇的葉片裝在AC扇上,用最低檔位吹，安49.216.164.222 04/18 20:39
18F→ewings: 靜程度和風量都不相上下，甚至因為少了AC49.216.164.222 04/18 20:39
19F→ewings: 轉DC損耗還比較省電49.216.164.222 04/18 20:39
36F→ewings: 風柔不柔和和風扇葉片的空氣動力學有關，49.216.164.222 04/18 21:39
37F→ewings: 以為用DC馬達就會柔和是哪來的邪教迷信啊49.216.164.222 04/18 21:39
38F→ewings: ？49.216.164.222 04/18 21:39
39F→ewings: 只要葉片轉速低，葉尖渦流（fan tip vorte49.216.164.222 04/18 21:43
40F→ewings: x)強度就會低，自然氣流就會柔順。DC扇只49.216.164.222 04/18 21:43
41F→ewings: 是用低轉速多葉片來換低渦流。49.216.164.222 04/18 21:43
43F→ewings: 傻子消費者只知道商人講講DC馬達效率比較49.216.164.222 04/18 21:47
44F→ewings: 高，但是商人卻多半只附個轉換效率差的二49.216.164.222 04/18 21:47
45F→ewings: 流AC轉DC變流器，DC馬達省的電還沒變流器49.216.164.222 04/18 21:47
46F→ewings: 浪費的多49.216.164.222 04/18 21:47
49F→ewings: 微風功能那種腦殘玩意？電風扇不要對著直49.216.164.222 04/18 22:07
50F→ewings: 吹自然就會是微風，還能改善室內空氣循環49.216.164.222 04/18 22:07
51F→ewings: 。而且一般的磁阻DC馬達低轉速時效率較差49.216.164.222 04/18 22:07
52F→ewings: ，根本沒省什麼電，還不如讓AC扇對牆吹49.216.164.222 04/18 22:07
54F→ewings: 當然，如果有凱子他爹砸大錢用永磁同步馬49.216.164.222 04/18 22:15
55F→ewings: 達當電扇馬達，就能解決DC馬達低轉速耗電49.216.164.222 04/18 22:15
56F→ewings: 的問題。我還滿想看用永磁同步馬達，賣得49.216.164.222 04/18 22:15
57F→ewings: 比呆森空氣倍增器還貴的電扇是張什麼樣子49.216.164.222 04/18 22:15
58F→ewings: 。49.216.164.222 04/18 22:15
79F→ewings: 如果用一樣的風扇葉片，25W的DC扇風量（CF49.216.164.222 04/18 23:36
80F→ewings: M)也只有50W的AC扇的一半。省電？49.216.164.222 04/18 23:36
82F→ewings: 沒講PWM我都忘了，PWM的轉換效率大概是70%49.216.164.222 04/18 23:42
83F→ewings: 到90%，本來廠商附的二流AC轉DC變流器效率49.216.164.222 04/18 23:42
84F→ewings: 大概就有60%~80%，再經過PWM再耗損一次，49.216.164.222 04/18 23:42
85F→ewings: 最低就只剩下42%的轉換效率了，比IE1標準49.216.164.222 04/18 23:42
86F→ewings: 的AC馬達還差。49.216.164.222 04/18 23:42
98F→ewings: 經濟部能源局發節能標章時有測每瓦能送出49.216.164.222 04/19 01:21
99F→ewings: 多少立方米的風量。近年國內沒有廠商開發49.216.164.222 04/19 01:21
100F→ewings: 新的AC扇機種沒得比較，但是失效標章裡的49.216.164.222 04/19 01:21
101F→ewings: 舊機種可以拿來比。49.216.164.222 04/19 01:21
102F→ewings: 像CHIMEI的DF-16A1STDC扇是每瓦1.42立方米49.216.164.222 04/19 01:21
103F→ewings: /分。而有趣的是東元的XA167X系列機械式AC49.216.164.222 04/19 01:21
104F→ewings: 扇，也能到達1.42。49.216.164.222 04/19 01:21
113F→ewings: 拿三葉片的對上多葉片的，不考慮馬達也會49.216.164.222 04/19 02:14
114F→ewings: 差很多，影片裡這種AC扇與DC扇的對決，不49.216.164.222 04/19 02:14
115F→ewings: 如說是售價的對決，售價高的葉片自然會用49.216.164.222 04/19 02:14
116F→ewings: 好的。49.216.164.222 04/19 02:14
117F→ewings: 一樣拿東元的舊機種當例子，XA1667AB的風49.216.164.222 04/19 02:14
118F→ewings: 量是每瓦0.92立方米/分,但是將葉片從三葉49.216.164.222 04/19 02:14
119F→ewings: 片換成5葉片的XA1670AB，就變成1.42，多出49.216.164.222 04/19 02:14
120F→ewings: 50%的效率。49.216.164.222 04/19 02:14
121F→ewings: 如果是風扇效率降低，像是扇徑由16吋降到149.216.164.222 04/19 02:18
122F→ewings: 4吋，XA1469BRH直流扇反而還掉到1.33，比149.216.164.222 04/19 02:18
123F→ewings: 6吋AC扇還差49.216.164.222 04/19 02:18
首頁
上一頁
1
下一頁
尾頁