請教加州效率計(jì)算公式
≧1 and ≦ 49 watts : 0.09 * Ln(Nameplate Output) + 0.49
式中的Ln怎樣計(jì)算?
請教加州效率計(jì)算公式
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@xt101
難道沒人知道嗎?
Ln = Natural Logarithm 自然對數(shù)
就是這個:
500) {this.resized=true; this.width=500; this.alt='這是一張縮略圖，點(diǎn)擊可放大。\n按住CTRL，滾動鼠標(biāo)滾輪可自由縮放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/32/1123509554.jpg');}" onmousewheel="return imgzoom(this);">
例如:Nameplate output標(biāo)稱輸出功率為40W
則:Ln(40)=3.68887945411393630285245569760072
0.09*3.68887945411393630285245569760072+0.49=0.821999150870254267256721012784065
結(jié)果為效率要大于82.2%
就是這個:
500) {this.resized=true; this.width=500; this.alt='這是一張縮略圖，點(diǎn)擊可放大。\n按住CTRL，滾動鼠標(biāo)滾輪可自由縮放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/32/1123509554.jpg');}" onmousewheel="return imgzoom(this);">
例如:Nameplate output標(biāo)稱輸出功率為40W
則:Ln(40)=3.68887945411393630285245569760072
0.09*3.68887945411393630285245569760072+0.49=0.821999150870254267256721012784065
結(jié)果為效率要大于82.2%
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@dotcom
Ln =NaturalLogarithm自然對數(shù)就是這個:[圖片]500){this.resized=true;this.width=500;this.alt='這是一張縮略圖，點(diǎn)擊可放大。\n按住CTRL，滾動鼠標(biāo)滾輪可自由縮放';this.style.cursor='hand'}"onclick="if(!this.resized){returntrue;}else{window.open('http://u.dianyuan.com/bbs/u/32/1123509554.jpg');}"onmousewheel="returnimgzoom(this);">例如:Nameplateoutput標(biāo)稱輸出功率為40W則:Ln(40)=3.688879454113936302852455697600720.09*3.68887945411393630285245569760072+0.49=0.821999150870254267256721012784065結(jié)果為效率要大于82.2%
非常感謝!
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