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Purpose

How to use the calculator

NOTE: You may only enter values in turquoise-colored cells. All other entries either are calculated automatically or are fixed va

Equation Calculator for USGBC LEED:

v4 Ener ! "t#os here Cre$it% BD&C'E"c(% )D&C'E"c*% EB:+','E"c-

This calculation tool automatically solves the equations described in the USGBC document, LEED for Ne !onstruction "ersion

quickly determine whether the HVAC equiment!and!re"ri#erant combinations in a rosective $%%&!'C ro(ect comly with th

requirements o" %ner#y ) Atmoshere Credit *+

./ Choose a worksheet by clickin# the aroriate tab at the bottom o" the %cel window+ -ick the $in%le &nit worksheet to roin"ormation "or a sin#le iece o" equiment+ .r, ick the 'ulti(le &nits worksheet to describe a ro(ect with di""erent tyes o" e

and/or re"ri#erant+

0/Tye the (ob name in cell B0+

1/Tye the location o" the (ob in cell B1+

4/O)T*ONAL:%nter the aroriate unit ta#0s1 "rom the equiment schedule in cell0s1 B*throu#h G*+

*/ Enter the refrigerant tpe in cell2s3 B( through G(/ Selecting the refrigerant tpe auto#aticall inserts the app

GP an$ +DP values fro# the LEED'5C v4 6eference Gui$e 2E" Cre$it 47 8a9le .3 in rows .4 an$ .*7 respectivel

(/ Enter the equip#ent tpe in cell2s3 B through G/ Selecting the equip#ent tpe auto#aticall inserts the appr

equip#ent life value2s3 fro# the LEED'5C v4 6eference Gui$e in row .0/

/2or each re"ri#erant tye and equiment tye, enter the HVAC mechanical coolin# caacity in cell0s1 B-throu#h G-+ 3" mult

the same re"ri#erant tye, enter the sum o" their caacities+

-/2or each re"ri#erant tye/equiment tye combination, enter the HVAC re"ri#erant char#e, in ounds, in cell0s1 B;throu#h

multile units o" the same equiment tye use the same re"ri#erant tye, enter the sum o" their re"ri#erant char#es in ounds

-"/ 02or 4ultile Unit worksheet only1 %nter the number o" identical units in 5ow 67+

The ro(ect quali"ies "or %A Credit * o" $%%&!'C v* i" the value in cell H86 04ultile Unit worksheet1 or C86 0Sin#le Unit worksh

than or equal to 677 and 9:es; is dislayed in cell H88 or C88+

The ro(ect does not quality "or this credit i" the value in cell H000'ulti(le &nitworksheet1 or C0.0$in%le &nitworksheet1 is 677 and 9'o; is dislayed in cell C00 or H01+

;/O)T*ONAL:To rovide additional in"ormation about the ro(ect, tye your comments in cell "-04ultile Unit A

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>o9 na#e

>o9 location

Date an$ ti#e of calculation =/6>/6= 66?7@ A4

Unit tag2s3

6efrigerant tpe 6'.01

Equip#ent tpe Centrifugal chiller

Capacit7 tons 2?unit3 ./ %B?.!4!%

Dob name

Dob location

&ate (@.*@.( ..:

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"ll

?total

./

7

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*"+imum efri!er"nt C,"r!e %--oed /-ton23

efri!er"nt Le"& r"te End of -ife Loss GWPr #$Pr

6'.01 8+7E 67+7E 7+78

6'.01M8raneMC8FMDocu#ente$MLAgM6ate 7+>E 67+7E 7+78

6'.011$2E3 8+7E 67+7E > 7+77

6'.014f 8+7E 67+7E * 7+77

6'.014e2E3 8+7E 67+7E = 7+77

6'.14a 8+7E 67+7E 6*@7 7+77

6'00 8+7E 67+7E 6 7+77

6'4

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5sin! C"-cu-"tionEquipment Life

10 1< )0 )= )