Abstract Evaporative cooling of the dehumidified air in a desiccant cooling system with the aid of solar energy is an attractive energy saving option to cool the process air for air conditioning purposes. This paper is concerned with the dynamic simulation and performance analysis of three configuration schemes of a solar-based ventilation mode desiccant cooling system energized by a photovoltaic-thermal (PV/T) solar collector for the weather conditions of Lahore (31.52°N, 74.36°E). In configuration-1 (C-1), the auxiliary heater is installed in the air conditioning loop to heat the return air up to the desired regeneration temperature. In configuration-2 (C-2), the auxiliary heater is installed in the solar heating loop to raise the temperature of the liquid water to a certain elevated temperature. The configuration-3 (C-3) is similar to C-2 except there are no evaporative coolers and all the cooling is achieved via conventional vapor compression chiller. The primary energy savings, solar fraction, and the thermal efficiency of the solar collector are the energetic performance parameters which are used to compare the performance of three configuration schemes and to analyze the influence of various parameters such as regeneration temperature, solar collector size and tilt, flow rates, and storage volume. The simulation results demonstrated that the C-1 scheme performs best in terms of solar fraction and primary energy savings while C-3 schematic resulted in the least values of primary energy savings.

中文翻译：

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三种配置方案的太阳能辅助除湿冷却系统动态仿真与参数分析

摘要 借助太阳能对干燥剂冷却系统中的除湿空气进行蒸发冷却是一种有吸引力的节能选择，可以冷却用于空调目的的工艺空气。本文涉及拉合尔 (31.52°N, 74.36) 天气条件下由光伏热 (PV/T) 太阳能集热器供电的太阳能通风模式干燥剂冷却系统的三种配置方案的动态模拟和性能分析°E)。在配置 1 (C-1) 中，辅助加热器安装在空调回路中，以将回风加热至所需的再生温度。在配置 2 (C-2) 中，辅助加热器安装在太阳能加热回路中，以将液态水的温度升高到一定的高温。配置 3 (C-3) 与 C-2 类似，不同之处在于没有蒸发冷却器，所有冷却都是通过传统的蒸汽压缩冷却器实现的。太阳能集热器的一次节能、太阳能分数和热效率是能量性能参数，用于比较三种配置方案的性能，分析再生温度、太阳能集热器尺寸和倾斜度等各种参数的影响、流速和存储量。模拟结果表明，C-1 方案在太阳能比例和一次能源节约方面表现最佳，而 C-3 方案的一次能源节约值最低。太阳能分数和太阳能集热器的热效率是能量性能参数，用于比较三种配置方案的性能并分析各种参数的影响，如再生温度、太阳能集热器尺寸和倾斜度、流量和存储量。模拟结果表明，C-1 方案在太阳能比例和一次能源节约方面表现最佳，而 C-3 方案的一次能源节约值最低。太阳能分数和太阳能集热器的热效率是能量性能参数，用于比较三种配置方案的性能并分析各种参数的影响，如再生温度、太阳能集热器尺寸和倾斜度、流量和存储量。模拟结果表明，C-1 方案在太阳能比例和一次能源节约方面表现最佳，而 C-3 方案的一次能源节约值最低。