The emissions of volatile organic compounds (VOCs) from petroleum product tankers potentially represent a significant source of VOCs in port cities. Emission factors are used to estimate the produced VOCs. VOC emissions from transit operations were simulated using a two part model of heat and mass transfer. Using local meteorological data of air temperatures, solar radiation and wind speed, the heat transfer within the tank was modeled. Results showed that bulk cargo temperature remained relatively steady at 25–28°C, the oil surface oscillated diurnally by 1–2°C, and the deck temperature oscillates diurnally by 15–20°C. The solar insolation had the largest effect on the tank temperatures. VOC emissions for two crude oils and gasoline, two tank configurations, and two meteorological conditions were estimated using a model derived from a mass balance on the tank and the obtained temperature profile. Only 3 of 8 scenarios had pressure increases large enough to cause venting of VOC. C2-C5 compounds constituted the majority of VOCs released from crude oils and ethanol made up the majority of the VOCs released from the gasoline carrying barge. The calculated daily emission factors for crude oil and gasoline (barge) were 10 mg/L/day and 135 mg/L/day respectively.

石油产品罐车中的挥发性有机化合物（VOC）排放可能是港口城市中VOC的重要来源。排放因子用于估算产生的VOC。使用热和质量传递的两部分模型模拟了运输操作中的VOC排放。利用当地气温，太阳辐射和风速的气象数据，对水箱内的热传递进行了建模。结果表明，散货温度在25–28°C时保持相对稳定，油面以1–2°C的速度昼夜振荡，而甲板温度以15–20°C的昼夜速度振荡。日晒对储罐温度的影响最大。两种原油和汽油的VOC排放，两种油箱配置，并使用从储罐上的质量平衡和获得的温度曲线得出的模型估算了两个气象条件。在8种情况中，只有3种的压力增加到足以引起VOC排出的程度。C2-C5化合物构成了从原油释放的大部分VOC，乙醇构成了从载油驳船释放的大部分VOC。计算得出的原油和汽油（驳船）日排放因子分别为10 mg / L / day和135 mg / L / day。