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发布时间 : 2020-02-10 08:08作者:手机版必威浏览次数 : 153次

Whetherit鈥檚architecturalLEDlightingforcommercialapplicationsorresidentialapplications,here鈥檚howtodeterminehowmanyLEDLumensyou鈥檒lneedtoproperlylightyourspace.

Ameasurementoflightemittedbyasource,whetherit鈥檚LED,Fluorescent,Halogen,orIncandescent.Thisisalsoknownas鈥渂rightness鈥or鈥渓ightoutput.鈥Yourreferencepoint:Astandard100-wattincandescentlightbulbproducesabout1,500鈥1,700lumens.

Notameasureofbrightness;instead,it鈥檚ameasureofhowmuchelectricity(orenergy)abulbconsumestoreachitsclaimedbrightness.Eachtypeoflightsource,LED,Fluorescent,Halogen,orIncandescenthasadifferentlumen-per-wattratio.Belowwe鈥檙egoingtouselumensasameasurementtomakesurewehaveenoughlightforaspace.

Sincewe鈥檝econflatedwattsandlumens,it鈥檚easiertotalkaboutbulbsintermsofwatts.Soifa100-wattincandescentproduces1,500lumens,anda10-watt聽LEDdoesthesame,the10-WattLEDmayadvertise鈥00-wattequivalent鈥onitslabel.

手机版必威Here鈥檚awattageequivalencechartbutnotethatlumen-per-wattratioscanrangemildly,evenfromLEDtoLEDproducts,rangingacrossarchitecturallightingapplicationssuchaslinearledsuspensionlighting,trimlessledrecessedlighting,orlinearrecessedlighting.

Thenumberoflumensabulbproducesforeachwattitconsumes.Thehigherthenumber,themoreefficientthebulb.Forexample,lightingproductsthathaveearnedtheENERGYSTARlabelarehighefficacy,meaningtheydeliverthesamefeatureswhileusinglessenergy.

MultiplytheLengthtimestheWidthoftheRoomtogettheRoomSquareFootage.Forexample,iftheroomis10feetwideand10feetlong,theRoomSquareFootagewillbe100squarefeet.

Afoot-candleishowbrightalightisone-footawayfromitssource.Lightingrequirements/needsvarydependingonthetypeofroombeinglit.Forexample,abathroomorkitchenwillrequiremorefoot-candlesthanalivingroomorbedroom.

Alumenisaunitmeasurementoflight.Todeterminetheneededlumens,youwillneedtomultiplyyourroomsquarefootagebyyourroomfoot-candlerequirement.Forexample,a100squarefootlivingroom,whichneeds10-20foot-candles,willneed1,000-2,000lumens.A100squarefootdiningroom,whichneeds30-40foot-candles,willneed3,000-4,000lumens.

Fortheaveragespaceof250squarefeet,you鈥檒lneedroughly5,000lumensasyourprimarylightsource(20lumensx250squarefeet).Inyourdiningroom,you鈥檒lwantabout30lumenspersquarefootonyourdiningtable(youwanttoseeyourfood,butnotexamineit),soifyourtableis6x3feet,that鈥檚540lumens.

Keepinmind,however,thatthesenumbersarefortypicalconditions.Ifyouhaveespeciallydarkcoloredwallsandfurnitureorifyou鈥檙eusingfixtureswithshades,you鈥檒lneedroughlyanadditional10lumenspersquarefoot.Webasedourcalculationson8-footceilings.Finally,personalpreferencewillplaythelargestpartinyourdecision.Ifyouliketheroomtobeespeciallybright,youmaywanttoaddanadditional10to20%toournumbers.Infact,thebestapproachformostspacesistoaimhighandinstalldimmerstobringthe聽lightleveldowntodesiredlevels.

DavidHakimiisalightingspecialistandoneoftheco-foundersofAlconLighting.AgraduateoftheUniversityofCaliforniaLosAngeles(UCLA),Davidworksonthefrontlinesoftheenergy-efficientlightingrevolution,enablingarchitects,designers,andlightingengineerstotransitionfromoutmodedhalogenandfluorescentlightingtowhatDavidcalls鈥渢heidealreplacementforalllightingapplications,鈥鈥擫EDs.DavidtakesparticularprideinAlcon鈥檚design,energy,andgreenbuildingknowledge,tracinghisandAlcon鈥檚commitmenttoquality,innovation,accountabilityandvaluebacktothelessonslearnedfromhisfather,aSouthernCalifornialightingsalesmanandconsultantformorethantwodecades.



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