Bryant Performance Data, 551A155-180, Cooling Capacities, Bypass, Entering Air Dry-Bulb Temp F

PERFORMANCE DATA

COOLING CAPACITIES

551A155 (13 TONS)

Temp (F)								Evaporator Air Quantity — Cfm/BF
				3600/0.03			4375/0.04			5000/0.05045				5625/0.06			6250/0.07
Air Entering
									Evaporator Air — Ewb (F)
	(Edb
			62	67	72	62	67	72	62		67	72	62	67	72	62		67	72
		TC	134	145	153	137	148	156	141		149	156	144	151	157	147		152	157
75		SHC	111	93	72	124	103	77	130		109	77	134	114	79	137		119	79
		kW	7.9	8.1	8.2	8.0	8.2	8.3	8.1		8.2	8.3	8.1	8.2	8.3	8.2		8.2	8.3
85		TC	130	140	147	133	142	149	136		144	149	139	145	150	141		146	150
		SHC	109	90	68	120	97	72	127		106	73	130	110	76	132		112	76
		kW	8.9	9.1	9.2	8.9	9.1	9.2	9.0		9.1	9.2	9.1	9.2	9.2	9.1		9.2	9.2
95		TC	125	134	141	128	136	142	131		138	142	133	138	142	136		139	142
		SHC	106	87	66	117	94	69	122		99	71	124	104	72	127		108	73
		kW	9.9	10.1	10.2	10.0	10.1	10.2	10.1		10.2	10.2	10.1	10.2	10.2	10.2		10.2	10.2
105		TC	120	129	134	123	130	134	126		131	134	128	132	135	129		132	135
		SHC	104	85	63	114	91	67	117		95	67	119	100	68	120		105	70
		kW	11.1	11.2	11.3	11.1	11.3	11.3	11.2		11.3	11.4	11.2	11.3	11.4	11.3		11.3	11.4
115		TC	114	122	127	117	123	127	120		124	127	121	124	127	122		125	127
		SHC	100	81	60	109	87	62	111		93	64	113	95	66	114		98	66
		kW	12.3	12.5	12.6	12.4	12.5	12.6	12.4		12.5	12.6	12.5	12.5	12.6	12.5		12.5	12.6
117		TC	108	115	118	122	124	127	123		124	126	123	124	127	124		125	127
		SHC	98	78	57	89	77	64	91		79	64	91	80	66	92		81	66
		kW	13.6	13.8	13.9	12.6	12.7	12.7	12.6		12.7	12.7	12.7	12.7	12.7	12.7		12.7	12.7
120		TC	112	119	123	114	119	123	116		120	123	117	120	123	118		120	123
		SHC	100	80	59	106	85	61	108		89	62	109	92	64	110		96	64
		kW	12.9	13.1	13.2	13.0	13.1	13.2	13.1		13.2	13.2	13.1	13.2	13.2	13.1		13.2	13.2
125		TC	109	115	118	111	115	119	113		116	119	114	116	119	115		116	119
		SHC	98	79	57	103	84	59	105		88	61	106	90	64	107		93	63
		kW	13.6	13.8	13.9	13.7	13.8	13.9	13.7		13.8	13.9	13.8	13.8	13.9	13.8		13.8	13.9
551A180 (15 TONS)
Temp (F)								Evaporator Air Quantity — Cfm/BF
Air Entering				4500/0.02			5250/0.03			6000/0.04				6750/0.04			7500/0.05
Condenser									Evaporator Air — Ewb (F)
	(Edb)
			62	67	72	62	67	72	62		67	72	62	67	72	62		67	72
75		TC	181	196	213	186	201	217	189		204	219	194	206	220	198		208	223
		SHC	147	124	99	160	133	105	173		143	113	181	153	120	186		163	125
		kW	11.2	11.6	12.0	11.3	11.7	12.1	11.4		11.8	12.1	11.6	11.9	12.2	11.7		11.9	12.2
85		TC	175	190	205	180	194	209	183		198	212	188	200	213	192		202	214
		SHC	145	121	97	157	130	102	168		139	106	175	148	115	180		157	119
		kW	12.3	12.7	13.1	12.5	12.8	13.2	12.6		12.9	13.3	12.7	13.0	13.3	12.8		13.1	13.4
95		TC	168	182	197	172	187	201	176		190	203	181	192	205	185		194	206
		SHC	142	118	93	154	127	98	164		136	102	170	144	108	174		153	113
		kW	13.5	13.9	14.3	13.6	14.0	14.4	13.8		14.1	14.5	13.9	14.2	14.6	14.0		14.3	14.6
105		TC	161	174	188	165	178	191	169		181	193	173	182	194	177		184	194
		SHC	138	115	91	150	124	95	158		132	98	162	140	103	166		148	107
		kW	14.8	15.2	15.6	14.9	15.3	15.7	15.1		15.4	15.7	15.2	15.5	15.8	15.3		15.5	15.8
115		TC	152	165	179	157	168	180	161		171	181	166	172	183	169		174	183
		SHC	134	111	87	145	120	91	151		128	94	155	136	98	158		142	101
		kW	16.1	16.5	16.9	16.2	16.6	17.0	16.4		16.7	17.0	16.6	16.8	17.1	16.7		16.9	17.1
120		TC	148	161	—	153	—	—	157		—	—	—	—	—	—		—	—
		SHC	132	110	—	142	—	—	147		—	—	—	—	—	—		—	—
		kW	16.8	17.2	—	16.9	—	—	17.1		—	—	—	—	—	—		—	—
125		TC	—	—	—	—	—	—	—		—	—	—	—	—	—		—	—
		SHC	—	—	—	—	—	—	—		—	—	—	—	—	—		—	—
		kW	—	—	—	—	—	—	—		—	—	—	—	—	—		—	—

551A155-180

LEGEND

BF — Bypass Factor Edb — Entering Dry-Bulb Ewb — Entering Wet-Bulb

kW — Compressor Motor Power Input ldb — Leaving Dry-Bulb

lwb — Leaving Wet-Bulb

SHC — Sensible Heat Capacity (1000 Btuh) Gross TC — 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

3.The SHC is based on 80 F edb temperature of air entering evaporator 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	Use formula
.10	.98	1.96	2.94		3.92	4.90
.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).

tlwb = Wet-bulb temperature corresponding to enthalpy of air leaving evapo- rator coil (hlwb)

h	= h		–	total capacity (Btuh)
lwb		ewb		4.5 x cfm

Where: hewb = Enthalpy of air entering evaporator coil

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