Bryant 580J manual Cooling Capacities, Stagecooling, Tons

580J

Table 26 – COOLING CAPACITIES						2-STAGE COOLING									8.5 TONS
		580J09 COOLING CAPACITIES, UNIT WITH PERFECT HUMIDITY SYSTEM IN SUBCOOLING MODE
							AIR ENTERING EVAPORATOR --- CFM
TEMP (F) AIR ENT				2550/0.04					3400/0.05				4250/0.07
CONDENSER (Edb)
								Air Entering Evaporator --- Ewb (F)
			72		67	62		72		67	62	72		67	62
		TC	119.20		107.44	96.41		126.95		114.98	103.92	131.87		119.81	109.54
75		SHC	50.63		63.94	77.40		59.17		76.72	94.21	66.80		88.44	108.22
		kW	5.67		5.57	5.47		5.54		5.63	5.74	5.79		5.68	5.59
		TC	110.40		99.22	88.76		117.63		106.26	95.77	122.21		110.77	101.07
85
		SHC	42.39		56.16	70.07		50.42		68.45	86.38	57.71		79.86	99.95
		kW	6.33		6.23	6.14		6.20		6.30	6.40	6.45		6.34	6.25
		TC	101.37		90.79	80.86		108.07		97.31	87.39	112.29		101.47	92.38
95
		SHC	33.97		48.22	62.56		41.46		60.01	78.39	48.40		71.09	91.47
		kW	7.08		6.99	6.90		6.96		7.05	7.16	7.20		7.09	7.01
		TC	92.04		82.06	72.71		98.19		88.05	78.72	102.07		91.86	83.40
105
		SHC	25.31		40.06	54.88		32.24		51.33	70.17	38.85		62.06	82.67
		kW	7.94		7.85	7.77		7.83		7.91	8.01	8.06		7.95	7.87
		TC	82.37		73.01	64.24		87.95		78.45	69.73	91.46		81.90	74.09
115		SHC	16.38		31.65	46.95		22.71		42.37	61.69	28.94		52.74	73.52
		kW	8.92		8.84	8.77		8.82		8.89	8.98	9.02		8.93	8.86
	580J09 COOLING CAPACITIES, UNIT WITH PERFECT HUMIDITY SYSTEM IN HOT GAS REHEAT MODE
							AIR ENTERING EVAPORATOR --- Ewb (F)
					75 Dry Bulb					75 Dry Bulb				75 Dry Bulb
TEMP (F) AIR ENT				62.5 Wet Bulb					64 Wet Bulb				65.3 Wet Bulb
CONDENSER (Edb)				(50% Relative)					(56% Relative)				(60% Relative)
								Air Entering Evaporator --- Cfm
			2550	3400		4250	2550		3400		4250	2550	3400		4250
		TC	37.61	33.13		26.77	44.74		41.60		36.46	50.96	48.99		44.93
80
		SHC	--- 0.52	--- 0.63		--- 0.73	--- 0.46		--- 0.57		--- 0.67	--- 0.42	--- 0.53		--- 0.62
		kW	5.88	5.68		5.44	6.13		5.97		5.76	6.35	6.24		6.06
		TC	38.71	34.24		27.86	45.84		42.73		37.59	52.05	50.11		46.06
75
		SHC	0.45	0.34		0.25	0.50		0.40		0.31	0.54	0.44		0.36
		kW	5.68	5.47		5.22	5.94		5.78		5.56	6.18	6.07		5.88
		TC	39.70	35.25		28.83	46.80		43.70		38.59	52.97	51.04		47.02
70		SHC	1.41	1.32		1.23	1.47		1.37		1.29	1.50	1.41		1.34
		kW	5.65	5.42		5.24	5.97		5.79		5.53	6.26	6.13		5.91
		TC	41.77	37.33		30.76	48.86		45.80		40.71	55.00	53.10		49.12
60		SHC	3.34	3.26		3.18	3.40		3.32		3.25	3.43	3.36		3.29
		kW	5.42	5.15		5.17	5.80		5.59		5.30	6.16	6.01		5.75
		TC	43.83	39.27		32.61	50.92		47.89		42.70	57.04	55.16		51.22
50
		SHC	5.27	5.21		5.14	5.32		5.27		5.21	5.36	5.31		5.25
		kW	5.18	5.15		5.17	5.62		5.39		5.05	6.04	5.87		5.59
		TC	45.75	41.13		34.50	53.08		50.00		44.64	59.24	57.40		53.44
40
		SHC	7.20	7.15		6.95	7.26		7.21		7.16	7.29	7.25		7.21
		kW	4.79	4.98		4.80	5.25		5.01		5.23	5.68	5.51		5.21

NOTE: Perfect Humidity only available on 2--- stage RTPF models.			NOTES:
LEGEND
Edb	---	Entering Dry--- Bulb	1. Direct interpolation is permissible. Do not extrapolate.
Ewb	---	Entering Wet--- Bulb	2. The following formulas may be used:
kW	---	Compressor Motor Power Input		sensible capacity (Btuh)
Idb	---	Leaving Dry--- Bulb	tldb = tedb –
				1.10 x cfm
Iwb	---	Leaving Wet--- Bulb	tlwb = Wet--- bulb temperature corresponding to enthalpy of air
SHC ---		Sensible Heat Capacity (1000 Btuh) Gross
			leaving evaporator coil (hlwb)
TC	---	Total Capacity (1000 Btuh) Gross		total capacity (Btuh)
			hlwb = hewb –
				4.5 x cfm

Where: hewb = Enthalpy of air entering evaporator coil

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