Keithley_Arduino_data_logger_and_controller

We investigated the flow and heat transfer characteristics of blocks made from MnFePSi magnetocaloric material produced using an extrusion-based additive manufacturing technique. An experimental setup was developed to collect data on pressure drop, flow rate, bulk fluid temperature, and solid surface temperature. Six samples were tested, each fabricated with varying fiber diameters and inter-fiber spacings, covering a range of void fractions and surface areas. The overlall dimensions of the samples were 16.1 x 16.1 x 6.2 mm^3. Pressure drop experiments were conducted for each sample at three distinct temperatures, approximately 7 °C, 22 °C, and 50 °C. For each temperature, the flow rate ranged from values above 2 Lpm to below 0.4 Lpm. Heat transfer experiments were performed by self-heating the samples using electrical current to create a temperature difference with the water stream. The temperatures of the 4 surfaces of the blocks parallel to the flow direction were recorded, and a heat transfer model was used to derive heat transfer coefficients. This repository stores two datasets related to this research project. One dataset consists of .csv files with pressure drop and heat transfer data generated by a custom-developed data logging system. A second dataset contains scanning electron microscope (SEM) images of the top and bottom surfaces of the 3D printed blocks, taken to determine their average fiber diameter and inter-fiber spacing.