Turning winter into summer: Operating a truck with B100 biodiesel all year round in cold regions
Authors: Nnaemeka, Obiajulu; Bibeau, Eric
Description: A fundamental problem to use B100 biodiesels in engines in the cold regions is due to the relatively higher cloud point compared to petroleum diesel. Several methods have been implemented in the past to lower the biodiesel cloud point such as use of additives and winterization, but none of these have proven successful due to the unique molecular stacking present in biodiesel. Therefore, the fuel is often blended to a maximum of 5% for use in diesel engines made by North American manufacturers. We hereby propose a novel passive tank design which can be implemented in existing diesel trucks to enable these to operate using B100 biodiesels in winter by having the biodiesels stay above a set point temperature for extended periods. The tank implements a latent energy storage system to capture waste heat from the diesel engine and maintain the temperature in the biodiesel tank above the cloud point for up to 5 days. Our analysis presents a numerical validation of the concept used in the actual scaled tank using the software Ansys Fluent. The result for the sample cases simulated indicated that using a latent energy storage system in the tank could increase the period when the biodiesel remains above cloud point.
Keywords: PCM, biodiesel, cloud point, latent energy storage, heat transfer, storage tanks
Conference name: CSBE/SCGAB 2017 Annual Conference, Canad Inns Polo Park, Winnipeg, Manitoba, 6-10 August 2017.
Session name: Session 3A: Biodiesel, Biogas, and Pre-treatment
Publisher: Canadian Society for Bioengineering
Language 1: en
Rights: Canadian Society for Bioengineering