Rancang Bangun Alat Praktikum Heat Exchanger Tipe Pipa Ganda

Abstract

A heat exchanger is a device that is needed in the process of heat transfer between two or more fluids with different temperatures, namely a high-temperature fluid to a low-temperature fluid. The double pipe type heat exchanger is a heat exchanger with the simplest concept and analysis so that it is more often used in the learning process, especially the practical work principle of a heat exchanger. In this research, an experimental device of a double-pipe type heat exchanger was made with variations in fluid flow discharge and fluid flow direction. From the results of making a heat exchanger practicum tool, with a double pipe type, PVC material for the outer pipe and copper material for the inner pipe. The device can vary the flow rate by adjusting the speed of the DC motor and can change the direction of fluid flow, namely parallel flow and counter flow. In the experiment, variations of the flow of cold fluid flow with a constant flow of hot fluid were carried out, and vice versa in the direction of flow in the same direction and in the opposite direction. A double-pipe type heat exchanger practicum has been made to determine the phenomenon of heat transfer that occurs between cold fluid and hot fluid, so that there is a temperature difference between the incoming fluid temperature and the outgoing fluid temperature in the heat exchanger pipe. The difference in the temperature of the hot fluid from the results of the largest heat transfer is 4.3oC, namely in the experiment the hot fluid flow rate of 1.2 liters/minute and the cold fluid flow rate of 3.4 liters/minute.