Bryant 580D manual 579F240 20 Tons Temp F Air Entering Evaporator Ð Cfm/BF, 579F300 25 Tons

PERFORMANCE DATA (cont)

COOLING CAPACITIES (cont)

579F240 (20 TONS)

Temp (F)															Air Entering Evaporator Ð Cfm/BF
Air Entering						6000/0.06					7000/0.07							8000/0.08						9000/0.09						10,000/0.10
Condenser															Air Entering Evaporator Ð Ewb (F)
(Edb)
				72			67		62	72		67		62		72			67	62			72		67		62			72		67	62
75		TC		274.0			250.0		226.0	280.0		256.0		232.0		284.0			260.0	236.0			288.0		264.0		242.0			292.0		268.0	246.0
		SHC		130.4			163.6		194.4	136.4		175.0		210.0		144.4			186.8	224.0			151.8		197.0		236.0			157.4		208.0	246.0
		kW		16.92			16.40		15.90	17.04		16.58		16.12		17.22			16.72	16.22			17.32		16.84		16.36			17.42		16.92	16.50
85		TC		264.0			240.0		216.0	270.0		244.0		222.0		276.0			250.0	226.0			278.0		254.0		232.0			282.0		256.0	238.0
		SHC		127.6			159.8		189.8	138.2		172.2		206.0		141.8			183.4	220.0			147.8		194.6		232.0			154.6		204.0	236.0
		kW		18.54			18.00		17.36	18.72		18.18		17.60		18.96			18.34	17.74			19.04		18.46		17.94			19.14		18.56	18.08
95		TC		252.0			228.0		204.0	258.0		234.0		210.0		262.0			238.0	216.0			266.0		240.0		222.0			270.0		242.0	228.0
		SHC		124.4			155.4		184.6	131.0		167.6		200.0		138.8			178.8	214.0			145.2		189.8		222.0			151.8		200.0	228.0
		kW		20.20			19.52		18.82	20.40		19.76		19.08		20.60			19.90	19.28			20.80		20.00		19.52			20.80		20.20	19.76
105		TC		240.0			216.0		190.6	246.0		222.0		196.6		250.0			226.0	204.0			252.0		228.0		212.0			256.0		230.0	218.0
		SHC		120.0			150.8		178.4	127.2		163.6		193.8		135.0			175.2	204.0			141.6		185.4		212.0			147.4		196.2	218.0
		kW		21.80			21.00		20.20	22.00		21.20		20.60		22.20			21.40	20.80			22.40		21.60		21.00			22.40		21.60	21.40
115		TC		228.0			204.0		176.6	232.0		208.0		184.6		236.0			212.0	194.2			238.0		214.0		202.0			240.0		216.0	208.0
		SHC		116.0			146.2		171.8	123.8		158.4		184.6		130.4			169.6	194.2			137.2		180.8		202.0			144.0		190.8	206.0
		kW		23.40			22.40		21.60	23.60		22.60		22.00		23.80			22.80	22.40			23.80		23.00		22.60			24.00		23.20	22.80
125		TC		214.0			188.8		163.2	218.0		194.2		174.2		220.0			197.6	183.4			224.0		199.8		190.6			226.0		202.0	196.0
		SHC		111.0			140.8		162.8	118.6		153.4		174.2		125.8			164.8	183.4			132.0		175.6		190.4			139.0		185.2	195.4
		kW		24.80			23.80		23.00	25.00		24.00		23.40		25.20			24.20	23.80			25.40		24.40		24.00			25.40		24.60	24.40
579F300 (25 TONS)
Temp (F)															Air Entering Evaporator Ð Cfm/BF
Air Entering						7000/0.03								8750/0.05							10,000/0.07								11,250/0.09
Condenser															Air Entering Evaporator Ð Ewb (F)
	(Edb)
						72		67		62			72		67			62		72		67				62			72		67		62
75			TC		323.9			299.4		275.8			331.3		312.7		288.4			336.1		319.8				294.7		342.6			322.5		300.0
			SHC		159.4			195.2		230.6			170.1		216.5		259.1			177.6		231.1				276.8		186.6			242.9		292.6
			kW		21.10			20.50		19.90			21.30		20.90		20.20			21.50		21.10				20.40		21.70			21.20		20.50
85			TC		315.3			290.4		264.3			326.9		303.2		278.0			333.7		309.1				285.0		335.1			314.2		291.1
			SHC		156.3			191.7		224.9			168.4		213.2		254.9			177.5		226.9				273.8		184.4			240.7		288.4
			kW		22.70			22.10		21.30			23.10		22.50		21.80			23.30		22.70				22.00		23.30			22.80		22.20
95			TC		304.1			277.4		243.1			315.3		290.1		263.8			320.4		295.6				271.1		324.1			300.6		279.4
			SHC		152.0			186.5		215.2			165.0		208.5		248.0			173.0		222.4				266.4		181.6			236.5		279.4
			kW		24.80			24.00		23.20			25.20		24.50		23.50			25.40		24.60				23.80		25.50			24.80		24.10
105			TC		291.2			261.4		224.8			300.9		274.2		242.1			305.7		280.3				252.3		309.8			284.8		266.3
			SHC		147.2			179.7		206.6			159.9		201.8		237.3			168.3		216.8				252.3		176.8			231.1		266.3
			kW		26.90			25.80		25.00			27.20		26.30		25.40			27.40		26.60				25.80		27.60			26.80		26.00
115			TC		274.6			237.9		207.6			285.9		251.5		222.6			291.3		258.4				237.7		293.9			267.5		247.1
			SHC		140.9			170.0		198.6			154.9		193.2		222.6			164.1		208.7				237.7		163.0			224.3		247.1
			kW		28.80			27.80		26.80			29.40		28.20		27.40			29.60		28.50				27.70		29.70			28.50		28.10
125			TC		254.5			214.9		184.3			266.7		230.9		206.7			272.0		236.0				220.8		276.1			240.0		231.1
			SHC		133.3			160.8		184.3			148.0		185.1		206.7			157.5		200.2				220.8		166.6			214.4		231.1
			kW		30.90			29.90		28.90			31.40		30.20		29.60			31.70		30.50				29.90		31.90			30.80		30.30

		Standard Ratings
		LEGEND
BF	Ð Bypass Factor
Edb	Ð Entering Dry-Bulb
Ewb	Ð Entering Wet-Bulb
kW	Ð Compressor Motor Power Input
Ldb	Ð Leaving Dry-Bulb
Lwb	Ð Leaving Wet-Bulb
SHC Ð Sensible Heat Capacity (1000 Btuh) Gross
TC	Ð Total Capacity (1000 Btuh) Gross

NOTES:

1.Direct interpolation is permissible. Do not extrapolate.

2.The following formulas may be used:

tldb	=	tedb −		sensible capacity (Btuh)
					1.10 x cfm
tlwb	=	Wet-bulb temperature corresponding to enthalpy of air leav-
		ing evaporator coil (hlwb)
hlwb = hewb			−		total capacity (Btuh)
					4.5 x cfm

Where: hewb = Enthalpy of air entering evaporator coil

3.The SHC is based on 80 F edb temperature of air entering evapo- rator coil.

Below 80 F edb, subtract (corr factor x cfm) from SHC.

Above 80 F edb, add (corr factor x cfm) to SHC.

BYPASS		ENTERING AIR DRY-BULB TEMP (F)
	79	78	77	76	75	under 75
FACTOR
	81	82	83	84	85	over 85
(BF)
			Correction Factor
.05	1.04	2.07	3.11	4.14	5.18
.10	.98	1.96	2.94	3.92	4.90	Use formula
.20	.87	1.74	2.62	3.49	4.36	shown below.
.30	.76	1.53	2.29	3.05	3.82

Interpolation is permissible.

Correction Factor = 1.10 x (1 − BF) x (edb − 80).

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