Abstrakt

Optimization of Helical Coil Heat Exchanger as a Waste Recovery System for Efficient Fuel Consumption

Lester Alfred M Olasiman

By the year 2035, the demand for energy will be 50% more than the current demand in the market. The non-renewable resources of energy started depleting during the last decade. This depletion caused the price hike in the energy usage of every individual. This dry-up in energy resources gave the most impact on the fuel consumption for transportation. This research solely aims to recover heat losses in exhaust pipes. The heat obtained in the heat exchanger can be used as another source of heat. This heat exchanger technology leads to the improvement of the efficiency of the engine. Upon the retrieval of heat losses in the pipe, the fuel consumption by the engine was diminished. This occurrence of less fuel consumption induced less cost for every amount of fuel used. A heat exchanger was designed and simulated using Solid Works Software. A prototype was produced in line with the simulated design of the heat exchanger. A pilot test was done to compare the initial data gathered using the prototype and that of gathered using the simulation. The test was run five times, measuring values for different variables. The results of the research show that the variables have different relationships with other variables. The data gathered and p-values computed show the correlations between exit temperatures, pitch size, heat gain, and mass flow rate. The exit temperature is directly proportional to the heat gain and pitch size. On the contrary, the maximum heat gain is indirectly proportional to the effectiveness of the heat exchanger. The conclusion can be drawn that the analysis for the design helical coil heat exchanger and the results were found to be in good agreement with the experimental results. Furthermore, the effectiveness of the heat exchanger was proven to be directly proportional to the diesel fuel temperature. Following an in-depth multi-dimensional analysis of preliminary research results, it is recommended to consider for upgrade and invest further study regarding other parameters that might affect the recovery of heat losses.