Published Paper Details:

ABSTRACT In this manuscript we have analyzed the Air-Cooled Heat Exchanger (ACHE) with test setup with internal spiral grooving in variation of pitches, this work also compares the performance of simple tube without grooving with grooved tube, all of the test setup are having variable pitches viz. 5 mm grooving, 10 mm grooving and 15 mm grooving respectively. In the test setup average heat transfer rate of a counter to cross flow ACHE for natural convection are 3010 watt, 3058 watt, 3078 watt and 3112 watt for simple tube without grooving, tube with 15 mm grooving pitch, tube with 10 mm grooving pitch and tube with 5 mm grooving pitch respectively. Similarly, for forced convection rate of average heat transfer are 3044 watt, 3063 watt, 3099 watt and 3146 watt for simple tube without grooving, tube with 15 mm grooving pitch, tube with 10 mm grooving pitch and tube with 5 mm pitch distance respectively. In the test setup effectiveness (in percentage) of the heat exchanger of 5 mm grooving pitch , 10 mm grooving pitch , 15 mm grooving pitch and simple tube without grooving are 7.072 , 6.960 , 6.870 and 6.715 respectively. In the test setup average Reynold Number of the air cooled heat exchanger of 5 mm grooving pitch, 10 mm grooving pitch , 15 mm grooving pitch and simple tube without grooving are 24135.42 , 19803.47 , 16863.85 and 14232.56 respectively. In the test setup average Nusselt Number of the air cooled heat exchanger of 5 mm grooving pitch , 10 mm grooving pitch , 15 mm grooving pitch and simple tube without grooving are 95.68 , 81.67 , 71.82 and 62.71 respectively. In the test setup average pressure drop ( in N/mt2) of the ACHE of 5 mm grooving pitch , 10 mm grooving pitch , 15 mm grooving pitch and simple tube without grooving are 0.05004, 0.03501 , 0.02674 and 0.0199 respectively