Bryant 580J manual Cooling Capacities, Stagecooling, Tons

tldb = tedb –

580J

Table 16 – COOLING CAPACITIES					1-STAGE COOLING						4 TONS
		580J05 (4 TONS) --- UNIT WITH PERFECT HUMIDITY SYSTEM IN SUBCOOLING MODE
					Air Entering Evaporator --- CFM
Temp (F) Air Ent				80 dry bulb			80 dry bulb			80 dry bulb
				72 wet bulb			67 wet bulb			62 wet bulb
Condenser (Edb)
			1200	1600	2000	1200	1600	2000	1200	1600	2000
	TC		52.5	55.9	58.6	47.1	50.2	52.7	41.7	44.5	46.8
75	SHC		22.6	25.5	27.8	27.1	29.9	32.0	31.6	34.2	36.2
	kW		2.5	2.5	2.5	2.5	2.5	2.5	2.5	2.5	2.5
	TC		48.7	52.2	54.9	43.4	46.5	49.0	38.0	40.8	43.1
85	SHC		18.0	21.3	23.9	23.6	26.8	29.2	29.3	32.2	34.4
	kW		2.9	2.9	2.9	2.9	2.9	2.9	2.9	2.9	2.9
	TC		44.9	48.4	51.2	39.6	42.8	45.3	34.3	37.1	39.4
95
	SHC		13.4	17.2	20.0	20.2	23.7	26.4	27.0	30.2	32.7
	kW		3.4	3.4	3.4	3.3	3.3	3.3	3.3	3.3	3.3
	TC		41.1	44.7	47.5	35.9	39.1	41.7	30.6	33.5	35.8
105
	SHC		8.8	13.0	16.1	16.7	20.6	23.6	24.6	28.2	31.0
	kW		3.8	3.8	3.8	3.7	3.7	3.7	3.7	3.7	3.7
	TC		37.4	41.0	43.9	32.1	35.4	38.0	26.8	29.8	32.1
115	SHC		4.3	8.8	12.2	13.3	17.5	20.7	22.3	26.2	29.2
	kW		4.2	4.2	4.2	4.2	4.2	4.2	4.1	4.1	4.1
		580J05 (4 TONS) --- UNIT WITH PERFECT HUMIDITY SYSTEM IN HOT GAS REHEAT MODE
					Air Entering Evaporator --- CFM
Temp (F) Air Ent				75 dry bulb			75 dry bulb			75 dry bulb
			62.5 wet bulb (50% relative)			64 wet bulb (55% relative)			65.3 wet bulb (60% relative)
Condenser (Edb)
			1200	1600	2000	1200	1600	2000	1200	1600	2000
	TC		11.6	13.8	15.5	13.5	15.8	17.6	15.2	17.5	19.3
80	SHC		--- 1.0	1.2	3.0	--- 3.1	--- 0.8	0.9	--- 4.8	--- 2.6	--- 0.9
	kW		2.5	2.5	2.5	2.5	2.5	2.5	2.5	2.5	2.5
	TC		12.5	14.6	16.2	14.3	16.4	18.1	15.9	18.1	19.8
75	SHC		--- 0.7	1.4	3.0	--- 2.7	--- 0.6	1.1	--- 4.3	--- 2.2	--- 0.6
	kW		2.5	2.5	2.5	2.5	2.5	2.5	2.5	2.5	2.5
	TC		13.4	15.3	16.8	15.1	17.1	18.7	16.6	18.7	20.3
70
	SHC		--- 0.5	1.5	3.0	--- 2.3	--- 0.3	1.2	--- 3.8	--- 1.9	--- 0.3
	kW		2.5	2.5	2.5	2.5	2.5	2.5	2.5	2.5	2.5
	TC		15.1	16.8	18.1	16.7	18.4	19.8	18.1	19.9	21.2
60
	SHC		0.0	1.7	3.1	--- 1.5	0.2	1.5	--- 2.8	--- 1.1	0.2
	kW		2.6	2.6	2.6	2.6	2.6	2.6	2.6	2.6	2.6
	TC		16.9	18.3	19.4	18.3	19.8	20.9	19.6	21.0	22.2
50	SHC		0.6	2.0	3.1	--- 0.7	0.7	1.8	--- 1.8	--- 0.4	0.7
	kW		2.6	2.6	2.6	2.6	2.6	2.6	2.6	2.6	2.6
	TC		18.7	19.8	20.7	19.9	21.1	22.0	21.0	22.2	23.2
40	SHC		1.1	2.2	3.1	0.1	1.2	2.1	--- 0.8	0.4	1.3
	kW		2.6	2.6	2.6	2.7	2.7	2.7	2.7	2.7	2.7

LEGEND
Edb	---	Entering Dry--- Bulb
Ewb	---	Entering Wet--- Bulb
kW	---	Compressor Motor Power Input
Idb	---	Leaving Dry--- Bulb
Iwb	---	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:

sensible capacity (Btuh)

1.10 x cfm

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

total capacity (Btuh)

hlwb = hewb – 4.5 x cfm

Where: hewb = Enthalpy of air entering evaporator coil

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