Air Cooled Aftercooler

Van Air AC Series Air Cooled Aftercoolers utilize free and readily available atmospheric air as the cooling medium. Standard models are rated to 3500 SCFM.

Hot moist air from the compressor is cooled rapidly to a safe, usable temperature by the Van Air triple-cool process. The AC Series Air-Cooled Aftercoolers utilize atmospheric air as the cooling medium. Compressed air enters the inlet manifold and is evenly distributed through a series of S-shaped copper tubes. The air flows across the cooling surface three times before it enters the outlet manifold. The heat transferred to the finned-tube core section dissipates the heat with a motor-driven fan. As the compressed air is cooled a substantial amount of moisture is condensed and collected into the separator installed on the aftercooler outlet. Install indoors or out.

SIZING AN AFTERCOOLER

1. Determine inlet temperature to aftercooler
2. Determine desired outlet temperature. (Aftercooler outlet temperature = ambient temperature + approach)
3. Determine needed approach. (Approach = desired outlet temperature – ambient temperature)
4. Find flow (SCFM) under column of correct inlet and approach temperature and read left for model number.

In order for you to use the approach temperature tables, you first need to decide if you need a 5, 10, 15 or 20 degree approach temperature. Then you need to determine your flow rate in SCFM. Last but not least, you need to determine the temperature of your compressed air as it leaves the air compressor.

Here is an example:

1. You want a 15 F approach temperature
2. The Air Compressor outputs 500 SCFM
3. The compressed air discharge temperature is 200 F

The best aftercooler for these operating conditions is an AC-150.

Approach Temperature

Dimensions

Specifications

Approach Temperature

150 F Inlet Approach

200 F Inlet Approach

250 F Inlet Approach

Model	5	10	15	20	5	10	15	20	5	10	15	20
AC-10	17	35	35	35	11	22	35	35	8	16	20	35
AC-20	29	43	43	43	17	36	43	43	12	27	35	43
AC-30	43	72	72	72	28	50	70	72	22	35	50	70
AC-40	95	125	125	125	66	111	125	125	52	88	100	125
AC-60	34	58	79	99	25	43	59	74	21	36	50	62
AC-80	50	87	119	150	40	69	94	117	34	59	80	100
AC-100	81	138	190	235	61	105	142	177	51	67	120	150
AC-110	92	160	220	270	73	125	172	215	63	110	150	187
AC-120	160	275	380	425	120	207	285	355	100	175	240	300
AC-130	184	318	440	480	145	250	345	430	125	217	300	375
AC-140	210	384	520	605	175	375	430	500	160	300	400	464
AC-150	355	650	890	1025	308	560	760	880	290	545	725	840
AC-160	480	871	1178	1360	415	754	1020	1180	390	712	950	1100
AC-170	600	1090	1475	1710	520	950	1290	1460	490	900	1200	1380
AC-180	790	1440	1950	2260	710	1290	1720	1950	660	1200	1600	1860
AC-190	980	1790	2420	2800	870	1580	2140	2460	820	1490	2000	2300
AC-200	1220	2200	3000	3470	1090	1980	2680	3100	1035	1880	2500	2870
AC-210	1450	2650	3580	4120	1295	2360	3200	3710	1243	2260	3000	3450
AC-220	1680	3064	4140	4800	1530	2785	3760	4320	1460	2660	3500	4015

	300 F Inlet Approach				350 F Inlet Approach
Model	5	10	15	20	5	10	15	20
AC-10	6	12	19	26	5	10	15	21
AC-20	10	20	31	42	8	16	26	35
AC-30	18	32	45	57	15	28	39	50
AC-40	44	74	100	125	38	64	86	108
AC-60	18	31	42	52	16	27	38	47
AC-80	30	52	71	89	28	47	65	82
AC-100	43	75	102	127	40	69	94	116
AC-110	55	95	130	160	50	86	120	148
AC-120	84	145	204	250	78	135	185	231
AC-130	110	190	257	320	100	175	240	300
AC-140	135	250	340	396	125	235	305	355
AC-150	245	450	605	701	225	410	540	625
AC-160	320	588	785	910	280	520	690	780
AC-170	405	735	980	1130	355	650	865	990
AC-180	530	965	1290	1480	460	840	1135	1300
AC-190	660	1210	1595	1840	572	1040	1400	1610
AC-200	784	1426	1980	2270	705	1290	1725	1980
AC-210	985	1794	2360	2715	840	1530	2040	2350
AC-220	1150	2090	2760	3200	950	1740	2350	2700

Dimensions

50 F Inlet Approach

200 F Inlet Approach

250 F Inlet Approach

Model	5	10	15	20	5	10	15	20	5	10	15	20
AC-10	17	35	35	35	11	22	35	35	8	16	20	35
AC-20	29	43	43	43	17	36	43	43	12	27	35	43
AC-30	43	72	72	72	28	50	70	72	22	35	50	70
AC-40	95	125	125	125	66	111	125	125	52	88	100	125
AC-60	34	58	79	99	25	43	59	74	21	36	50	62
AC-80	50	87	119	150	40	69	94	117	34	59	80	100
AC-100	81	138	190	235	61	105	142	177	51	67	120	150
AC-110	92	160	220	270	73	125	172	215	63	110	150	187
AC-120	160	275	380	425	120	207	285	355	100	175	240	300
AC-130	184	318	440	480	145	250	345	430	125	217	300	375
AC-140	210	384	520	605	175	375	430	500	160	300	400	464
AC-150	355	650	890	1025	308	560	760	880	290	545	725	840
AC-160	480	871	1178	1360	415	754	1020	1180	390	712	950	1100
AC-170	600	1090	1475	1710	520	950	1290	1460	490	900	1200	1380
AC-180	790	1440	1950	2260	710	1290	1720	1950	660	1200	1600	1860
AC-190	980	1790	2420	2800	870	1580	2140	2460	820	1490	2000	2300
AC-200	1220	2200	3000	3470	1090	1980	2680	3100	1035	1880	2500	2870
AC-210	1450	2650	3580	4120	1295	2360	3200	3710	1243	2260	3000	3450
AC-220	1680	3064	4140	4800	1530	2785	3760	4320	1460	2660	3500	4015

	300 F Inlet Approach				350 F Inlet Approach
Model	5	10	15	20	5	10	15	20
AC-10	6	12	19	26	5	10	15	21
AC-20	10	20	31	42	8	16	26	35
AC-30	18	32	45	57	15	28	39	50
AC-40	44	74	100	125	38	64	86	108
AC-60	18	31	42	52	16	27	38	47
AC-80	30	52	71	89	28	47	65	82
AC-100	43	75	102	127	40	69	94	116
AC-110	55	95	130	160	50	86	120	148
AC-120	84	145	204	250	78	135	185	231
AC-130	110	190	257	320	100	175	240	300
AC-140	135	250	340	396	125	235	305	355
AC-150	245	450	605	701	225	410	540	625
AC-160	320	588	785	910	280	520	690	780
AC-170	405	735	980	1130	355	650	865	990
AC-180	530	965	1290	1480	460	840	1135	1300
AC-190	660	1210	1595	1840	572	1040	1400	1610
AC-200	784	1426	1980	2270	705	1290	1725	1980
AC-210	985	1794	2360	2715	840	1530	2040	2350
AC-220	1150	2090	2760	3200	950	1740	2350	2700