Bryant 581A/B manual 210

PERFORMANCE DATA (cont)

COOLING CAPACITIES — STANDARD UNITS (cont)

581A210 (18 Tons)

Temp (F)												Evap Air — Cfm/BF
					5400/0.05								6300/0.06								7200/0.07
Air Ent
												Evap Air — Ewb (F)
Cond
		54	58	62		67	72	76	80	54	58	62		67	72	76	80	54	58	62		67	72	76	80
	TC	202	206	211		229	248	263	279	212	215	218		235	254	269	285	220	221	223		239	259	273	289
60	SHC	202	193	184		155	124	99.3	74.7	212	205	199		166	131	103	74.9	220	216	213		177	138	106	75
	kW	10.2	10.3	10.4		10.6	10.8	11	11.2	10.4	10.4	10.4		10.7	10.9	11.1	11.3	10.5	10.5	10.5		10.7	11	11.2	11.4
	TC	197	202	206		223	242	256	272	207	209	212		228	247	262	277	215	216	217		233	252	267	282
70	SHC	197	189	181		152	122	97	72.5	207	202	196		163	129	101	72.7	215	212	210		174	135	104	72.8
	kW	11.4	11.5	11.5		11.8	12	12.2	12.5	11.6	11.6	11.6		11.9	12.1	12.3	12.6	11.7	11.7	11.7		11.9	12.2	12.4	12.6
	TC	195	199	203		219	238	253	268	204	206	209		225	244	258	273	212	213	214		229	248	263	277
75	SHC	195	187	180		150	120	95.8	71.3	204	199	195		162	127	99.3	71.4	212	210	208		173	134	103	71.5
	kW	12.1	12.2	12.2		12.5	12.7	13	13.2	12.3	12.3	12.3		12.6	12.8	13	13.3	12.4	12.4	12.4		12.6	12.9	13.1	13.3
	TC	190	193	196		213	231	246	260	199	201	202		218	236	251	264	206	207	208		222	240	255	268
85	SHC	190	183	177		148	118	93.4	68.8	199	195	191		159	125	96.9	68.9	206	205	204		170	131	100	69
	kW	13.5	13.5	13.6		13.8	14.1	14.4	14.6	13.6	13.7	13.7		13.9	14.2	14.5	14.7	13.7	13.8	13.8		14	14.3	14.5	14.8
	TC	184	187	190		205	222	236	250	193	194	195		210	227	241	254	200	200	201		214	231	245	258
95	SHC	184	179	173		144	114	90.2	65.9	193	190	187		156	121	93.7	66.1	200	199	199		167	128	97.1	66.2
	kW	15	15	15.1		15.4	15.7	15.9	16.2	15.1	15.2	15.2		15.5	15.8	16	16.3	15.3	15.3	15.3		15.5	15.8	16.1	16.3
	TC	178	180	182		197	213	228	240	186	187	188		201	217	232	244	193	193	193		205	221	235	247
105	SHC	178	173	169		141	111	87.3	62.9	186	184	183		152	118	90.8	63.1	193	193	193		163	124	94.1	63.2
	kW	16.6	16.7	16.7		17	17.3	17.7	17.9	16.8	16.8	16.8		17.1	17.4	17.8	18	16.9	16.9	16.9		17.2	17.5	17.8	18
	TC	171	172	174		188	203	217	228	179	179	179		192	207	221	232	185	185	185		195	210	224	235
115	SHC	171	168	165		137	107	83.6	59.6	179	178	178		149	114	87.1	59.7	185	185	185		159	121	90.4	59.9
	kW	18.4	18.4	18.4		18.8	19.1	19.4	19.7	18.6	18.6	18.6		18.9	19.2	19.5	19.8	18.7	18.7	18.7		19	19.3	19.6	19.9
	TC	164	165	165		178	192	205	216	171	171	171		182	196	208	219	177	177	177		185	199	211	222
125	SHC	164	162	160		134	104	79.8	56.1	171	171	171		145	110	83.2	56.3	177	177	177		155	117	86.5	56.4
	kW	20.2	20.3	20.3		20.6	21	21.3	21.6	20.4	20.4	20.4		20.8	21.1	21.4	21.7	20.6	20.6	20.6		20.8	21.2	21.5	21.8
581A210 (18 Tons) (cont)
Temp (F)								Evap Air — Cfm/BF
					8100/0.08								9000/0.09
Air Ent
								Evap Air — Ewb (F)
Cond
		54	58	62		67	72	76	80	54	58	62		67	72	76	80
	TC	227	227	228		243	262	277	293	233	233	233		246	265	280	295
60	SHC	227	226	224		187	144	109	75.1	233	233	233		198	151	113	75.1
	kW	10.5	10.6	10.6		10.7	11	11.2	11.4	10.6	10.6	10.6		10.8	11	11.3	11.5
	TC	222	222	222		236	255	271	284	228	228	227		239	258	272	287
70	SHC	222	221	221		185	142	107	72.8	228	228	227		195	148	110	72.9
	kW	11.8	11.8	11.8		12	12.2	12.5	12.7	11.9	11.9	11.8		12	12.3	12.5	12.7
	TC	219	219	219		232	251	266	280	225	224	224		235	254	268	282
75	SHC	219	218	218		183	140	106	71.6	225	224	224		193	147	109	71.7
	kW	12.5	12.5	12.5		12.7	12.9	13.2	13.4	12.6	12.5	12.5		12.7	13	13.2	13.4
	TC	213	213	213		225	243	258	271	218	218	218		228	245	260	273
85	SHC	213	213	213		180	138	103	69.1	218	218	218		190	144	107	69.2
	kW	13.8	13.8	13.8		14.1	14.3	14.6	14.8	13.9	13.9	13.9		14.1	14.4	14.6	14.8
	TC	206	206	206		217	234	248	260	211	211	211		220	236	250	262
95	SHC	206	206	206		177	134	100	66.3	211	211	211		187	141	103	66.4
	kW	15.4	15.4	15.4		15.6	15.9	16.1	16.4	15.5	15.5	15.5		15.6	15.9	16.2	16.4
	TC	199	199	199		208	224	238	249	203	203	204		210	226	240	251
105	SHC	199	199	199		173	131	97.2	63.2	203	203	204		183	137	100	63.4
	kW	17	17.1	17.1		17.3	17.6	17.9	18.1	17.2	17.2	17.2		17.3	17.6	17.9	18.1
	TC	191	191	191		198	213	226	237	195	195	195		201	215	228	238
115	SHC	191	191	191		169	127	93.5	60	195	195	195		179	133	96.6	60
	kW	18.8	18.8	18.8		19	19.3	19.7	19.9	18.9	18.9	18.9		19.1	19.4	19.7	19.9
	TC	182	182	182		188	201	213	224	186	186	186		190	203	215	225
125	SHC	182	182	182		165	123	89.6	56.5	186	186	186		174	129	92.6	56.6
	kW	20.7	20.7	20.7		20.9	21.2	21.6	21.9	20.9	20.9	20.9		21	21.3	21.6	21.9

581A155-300

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
tlwb	= Wet-bulb temperature corresponding to enthalpy of air leaving evapo-
		rator 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 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
.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).

4. Use chart below for bypass factor.

			ENTERING WET-BULB (F)
CFM	54	58	62	67	72	76	80
			Bypass Factor
5400	0.424	0.238	0.125	0.120	0.138	0.000	0.000
6300	0.478	0.304	0.153	0.132	0.145	0.000	0.000
7200	0.525	0.364	0.190	0.144	0.153	0.000	0.000
8100	0.562	0.414	0.231	0.156	0.162	0.000	0.000
9000	0.594	0.456	0.281	0.168	0.170	0.000	0.000

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