Abstract
An Auxiliary Air Conditioner (AAC) system, which decreases the cabin air conditioning load of Liquid Hydrogen (LH2) powered Spark Ignition Internal Combustion Engine Vehicles (SI ICEV), has been proposed in this study. Volatile Organic Compounds (VOC), Carbon Monoxide (CO), Nitrogen Oxides (NOx), Particulate Matters (PM10 & PM2.5), Sulfur Oxides (SOx), and Carbon Dioxide (CO2) emissions are theoretically calculated using GREET software developed by Argonne National Laboratory for decades between 2010 and 2050. The results of the study show that the proposed novel system decreases all emissions emitted from LH2 SI ICEVs decreasing both Well-To-Pump (WTP) and Well-To-Wheel (WTW) emissions. These decreases are around 3 g/year for VOC, 20 g/year for CO, 13 g/year for NOx, 1 g/year for both PM10 and PM2.5, 1 g/year for SOx, and 16 kg/year for CO2.
Highlights
Due to strict emission regulations and increasing energy demands, there has been great progress in the field of alternative fuels in recent years (Ciniviz and Köse, 2011; Tüccar et al, 2013; Akar et al, 2018)
When the Air Conditioning (AC) load increases over the amounts of cooling capacities of the vehicles with this proposed system, it can only be used in the assistance of the main AC unit of the vehicle
If the Auxiliary Air Conditioner (AAC) system operates at 50% efficiency, it can assist the main AC of the vehicle at 2.7% with a COP of 3.4
Summary
Due to strict emission regulations and increasing energy demands, there has been great progress in the field of alternative fuels in recent years (Ciniviz and Köse, 2011; Tüccar et al, 2013; Akar et al, 2018). Due to the significant power consumption of mechanical compressors in AC systems, fuel consumption increases in vehicles This increase can be as much as around 12-17% due to the conditions such as driver factors, environmental factors, and road factors for mid-size and subcompact cars Lambert and Jones (2006), and Khayyam (2013) report in their studies. For this reason, decreasing the energy consumption of a VAC system will maintain to improve the vehicle’s overall energy efficiency. VOC, CO, NOx, PM10, PM2.5, SOx, and CO2 emissions were compared for an average car specified in the software
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