Chemical - Engineering

    The main objective of this study is to electroplate different plastic types of thermoplastic as (ABS and polystyrene) and thermosetting as (epoxyfiberglass and phenolic) and to study the best graphite conductive colloid from particles size and binding agents to deposit graphite layer onto plastic surface. This process can make copper electroplating possible without intermediate conductive copper film deposited via electroless copper by using direct copper plating There are two reasons for using a copper layer.

 This work presents the study of fluid flow through a packed bed, where two fluids were used separately (air and water). The packed bed contains spherical glass particles distributed randomly.The packed bed was 7.62 cm in diameter and 57 cm long. The glass particles were 0.42, 0.50, 0.61, 0.79 and 1.01 cm in diameter. Different flow rates of fluid were used which expressed by modified Reynolds number. The experiments were carried out at laboratory temperatures (32 ◦C) for air flow and at tap water temperature (25 ◦C) for water flow.

    This study deals with the recovery of the energy available in hot and cold streams that exchanging heat. This can be done by heat exchanger network, to minimize the cost and the use of utilities. The transfer of energy from the hot stream to the cold stream depends on the rate of flow, area of the exchanger, the heat transfer coefficient and temperature gradient along each stream.