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Equipment and Lighting Loads
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Equipment and Lighting Loads Lighting, HV AC equipment, water heaters, and appliances all consume energy in the form of either electricity or fuel. All of these things are important to understand and optimize for high performance building design, and are important inputs for whole building energy analysis simulation. he equipment, lighting, and plug loads described below are determi ned by the building!s intended use, its occupancy, and its scheduling. "n short# its program. Lighting Loads Lighting loads are the energy used to power electric lights$ they ma%e up nearly a third of &' commercial building energy use, but for residential buildings they are ge nerally only () * ( +. Lighting loads in a building are often referred to in terms of a -Lighting ower /ensity0 that is measured in watts per square foot or square meter. 1hen deciding which lighting products to use, loo% at the e2ciency 3or luminous e2cacyof the products. 4ore e2cient light sources and 56tures not Incandescent and compact fuorescent bulbs emit similar output o visible light, but the incandescent emits ar more heat (inrared light), causing higher lighting loads and cooling loads. (From Pacic Energy enter )
Transcript of Equipment and Lighting Loads
7/23/2019 Equipment and Lighting Loads
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Equipment and Lighting LoadsLighting, HVAC equipment, water heaters, and appliances allconsume energy in
the form of eitherelectricity or fuel.All of these thingsare important tounderstand andoptimize for highperformancebuilding design,
and are importantinputs for wholebuilding energyanalysissimulation.
he equipment,
lighting, and plug loads
described below are
determined by the
building!s intended use, its occupancy, and its scheduling. "n short#
its program.
Lighting Loads
Lighting loads are the energy used to power electric lights$ they ma%e up
nearly a third of &' commercial building energy use, but for residential
buildings they are generally only () * (+. Lighting loads in a building are
often referred to in terms of a -Lighting ower /ensity0 that is measured in
watts per square foot or square meter.
1hen deciding which lighting products to use, loo% at the e2ciency 3or
luminous e2cacyof the products. 4ore e2cient light sources and 56tures not
Incandescent and compact fuorescent bulbsemit similar output o visible light, but theincandescent emits ar more heat (inraredlight), causing higher lighting loads andcooling loads. (From Pacic Energy enter )
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only reduce lighting loads, but also reduce cooling loads for the same 7isible
brightness.
lug loadslug loads are the electricity used for other equipment, li%e computers and
appliances$ they ma%e up 8) * 9) of energy loads in &' commercial
buildings, and (+ * 8) of home energy, though these numbers are growing
as electronics become more per7asi7e.
lug loads are sometimes included in -Equipment ower /ensity0 3E/: and
sometimes they are separated. 1hen doing building analysis, it!s important
to %now which 7alue you!re inputting.
Equipment Loads
Equipment Rated Power (watts)
Desktop computer 120
Notebook computer 45
17” LCD Display ;+
Desktop laser printer 120
Office laser printer 250
Office copier 750
Refrierator 750
Dis!"as!er 1#200
$ele%ision 100
Commercial refrierator 1#000
Commercial fryer 10#000
Clot!es "as!er &50
Clot!es 'ryer 2#000
Plug loads or specic items(!ource" #!$% and Energy!tar )
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Equipment, li%e HVAC systems and water heaters, is the other main internal
load. his is typically separated from plug loads and is gi7en in terms of an
-Equipment ower /ensity,0 which is measured in watts per square foot or
square meter .
1hen deciding which equipment to use, loo% at third*party quantitati7e
re7iews, or read the ma6imum power use listed on product speci5cation
sheets 3a7erage power use data is usually not a7ailable because it can 7ary
greatly by usage.:
Example Internal Loads for Dierent Space Types
Lighting Power Density
W/m2 W/ft2
Assemby 17 1()
!assroom 1& 1(2
"ood #er$i%e 15 1(4
&ffi%e 11*&0 1(0*2(+
Retai 1) 1(5
Residentia (singe famiy) 5 0(5
Residentia (muti famiy) + 0(7
Warehouse , 0(+* 'ee more at#
http#<<sustainabilitywor%shop.autodes%.com<buildings<equipment*and*
lighting*loads=sthash.A8Ebz/).dpuf
