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Energy Performance of a Liquid Desiccant and Evaporative Cooling-Assisted 100% Outdoor Air System in Commercial Ships 商用船舶液体干燥剂和蒸发冷却辅助100%室外空气系统的能量性能
本研究评估了用于商用客船的液体干燥剂和间接/直接蒸发冷却辅助100%室外空气系统(LD-IDECOAS)的能量性能。LD-IDECOAS由一个LD系统和一个用于除湿的间接和直接蒸发冷却器(分别为IEC和DEC)组成,可对工艺空气进行显式和绝热冷却。该系统采用海水作为冷却源,发动机余热回收(WHR)系统作为热源。将现有文献中的有机朗肯循环(ORC)回归模型用作WHR系统,以评估余热利用的热效率。用于估算LD的能量性能- IDECOAS,对两个舱室进行了能量模拟。每个舱室的面积为177.6平方英尺(16.5平方米)。根据ISO-7547标准,考虑到典型运行条件,估算了客舱所需的热负荷。此外,LD-IDECOAS的能耗通过使用商业方程求解程序确定。然后,将拟议系统的能量性能与使用吸收式制冷机的传统商用客船(例如CAV)的空调系统的能量性能进行比较,以估计拟议系统的节能潜力。引用:2016年年度会议,密苏里州圣路易斯,会议论文
This study evaluates the energy performance of a liquid desiccant and indirect/direct evaporative cooling-assisted 100% outdoor air system (LD-IDECOAS) for application in a commercial passenger ship. The LD-IDECOAS consists of an LD system and an indirect and direct evaporative cooler (IEC and DEC, respectively) for dehumidification, and it provides for sensible and adiabatic cooling of the process air. The proposed system used seawater as the cooling source and the engine waste heat recovery (WHR) system as the heating source. The organic Rankine cycle (ORC) regression model from existing literature was adapted as a WHR system to evaluate the thermal efficiency of using waste heat. For estimating the energy performance of the LD-IDECOAS, an energy simulation was conducted for two cabins. The area of each cabin was 177.6 ft2 (16.5 m2). The required thermal load of the passenger cabins was estimated according to ISO-7547 standards considering typical operating conditions. Additionally, the energy consumption of the LD-IDECOAS was determined by using a commercial equation solver program. The energy performance of the proposed system was then compared with that of the air conditioning system of a conventional commercial passenger ship (e.g., CAV), which used absorption chillers, for estimating the energy saving potential of the proposed system.
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