太阳能转轮除湿空调系统具有清洁且可持续性的优点，并且能够很好地匹配建筑热湿负荷，从而引起了越来越多的关注。但由于太阳能能流密度低、不稳定等缺点，太阳能转轮除湿空调系统需要辅助热源互补。本文提出了太阳能为主，其它热源为辅的太阳能与辅助热源互补转轮除湿空调系统。系统采用两级转轮除湿机进行除湿，有效地降低了系统的再生温度。利用以太阳能为主的热源互补方式，弥补了单一太阳能作为系统驱动热源的缺陷，显著提高了系统的性能。具体研究内容与结果如下：

提出了太阳能与辅助热源互补转轮除湿空调系统，对系统进行了热力学分析。根据系统再生热源的互补方式，构成太阳能与电能互补、太阳能与水源热泵互补、太阳能与空气源热泵互补三种转轮除湿空调系统。建立了互补转轮除湿空调系统各部件的数学模型，选取了系统的性能评价指标，确定了系统的优化算法。

提出了太阳能与电能互补转轮除湿空调系统，利用TRNSYS软件模拟研究了该系统应用于广州某办公建筑的可行性以及系统的动态特性。结果表明：空调房间的温度和含湿量分别在24.5~26.4 ℃和11.5~12.0 g/kg（相对湿度为55%~59%），满足热舒适要求。系统制冷季平均COP_th和平均COP_e分别为1.47和1.89。应用粒子群-模式搜索法对系统优化参数进行同步优化。结果表明：当集热器面积为222 m²，蓄热水箱容积为11.0 m³，辅助电加热器制热功率为24 kW时，系统的生命周期成本达到最小值且为146.5万元。相比于优化前系统，优化后系统制冷季平均节能率提高了10.4%，平均COP_e提高了13.2%。

提出了太阳能与水源热泵互补转轮除湿空调系统，系统采用自然冷源为水源热泵提供热源，也为空气冷却器提供冷源。研究了系统的热力性能，对系统优化参数进行同步优化，对比分析了优化前后系统性能。结果表明：当再生温度为60 ℃时，系统的显热回收量为2.41kW。当集热器面积为168 m²，蓄热水箱容积为11.4 m³，水源热泵制热功率为5.6 kW时，系统的生命周期成本达到最小值。优化后系统制冷季平均节能率提高了4.93%。优化后系统的COP_e均高于优化前系统，系统的性能得到提高。

提出了太阳能与空气源热泵互补转轮除湿空调系统，系统通过两级转轮除湿机降低处理空气的湿球温度，再利用蒸发冷却器制备冷风和冷水。研究了系统的热力性能，对系统优化参数进行同步优化，对比分析了优化前后系统性能。结果表明：当气水比为1.4时，系统制备的冷水温度达到最低且为15.9 ℃。当集热器面积为170 m²，蓄热水箱容积为11.5 m³，空气源热泵制热功率为9.6 kW时，系统的生命周期成本达到最小值。优化后系统制冷季平均节能率提高了5.70%。优化后系统各月的COP_e分别为6.3，7.3，7.4和6.7。

将优化后的太阳能与电能互补转轮除湿空调系统、太阳能与水源热泵互补转轮除湿空调系统以及太阳能与空气源热泵互补转轮除湿空调系统三个空调系统的经济效益、节能效益、环保效益进行对比分析。结果表明：相比于太阳能与电能互补转轮除湿空调系统，太阳能与水源热泵互补转轮除湿空调系统和太阳能与空气源热泵互补转轮除湿空调系统的费用年值分别降低了44.3%和36.1%，节能率分别为70.6%和68.2%，CO₂减排量分别为31316.1 kg和 30253.5 kg。

The solar desiccant wheel air conditioning system has the advantages of cleanliness and sustainability, and can well match the building heat and moisture load, which has attracted more and more attention. However, due to the shortcomings of low solar energy density and instability, the solar desiccant wheel air conditioning system requires complementary auxiliary heat sources. In this paper, a solar energy and auxiliary heat source complementary desiccant wheel air conditioning system is proposed, which is dominated by solar energy and supplemented by other heat sources. The system uses a two-stage rotary dehumidifier for dehumidification, which effectively reduces the regeneration temperature of the system. The use of solar energy-based heat source complementarity makes up for the shortcomings of a single solar energy as a system-driven heat source, and significantly improves the performance of the system. The specific research contents and results are as follows:

The solar energy and auxiliary heat source complementary desiccant wheel air conditioning system is proposed, and the thermodynamic analysis of the system is carried out. According to the complementary mode of the regeneration heat source of the system, three kinds of desiccant wheel air conditioning systems are composed of solar energy and electric energy complementary, solar energy and water source heat pump complementary, solar energy and air source heat pump complementary. The mathematical model of each component of the complementary desiccant wheel air conditioning system is established, the performance evaluation index of the system is selected, and the optimization algorithm of the system is determined.

The solar energy and electric energy complementary desiccant wheel air conditioning system is proposed. The feasibility of the system applied to an office building in Guangzhou and the dynamic characteristics of the system are simulated by TRNSYS software. The results show that the temperature and the humidity ratio of the air-conditioned room are at 24.5~26.4 °C and 11.5~12.0 g/kg (relative humidity is 55%~59%), respectively, which meets the thermal comfort requirements. The average COPth and average COPe of the system during the cooling season are 1.47 and 1.89, respectively. The particle swarm optimization-Hooke-Jeeves method is used to optimize the system optimization parameters simultaneously. The results show that when the collector area is 222 m², the volume of the heat storage tank is 11.0 m⁵, and the heating power of the auxiliary electric heater is 24 kW, the life cycle cost of the system reaches the minimum value of 1.465 million yuan. Compared with the system before optimization, the average energy saving rate of the optimized system during the cooling season is increased by 10.4%, and the average COPe is increased by 13.2%.

The solar energy and water source heat pump complementary desiccant wheel air conditioning system is proposed. The system uses natural cold source to provide heat source for water source heat pump and cold source for air cooler. The thermal performance of the system is studied, the optimization parameters of the system are optimized simultaneously, and the system performance before and after optimization is compared and analyzed. The results show that when the regeneration temperature is 60 ℃, the sensible heat recovery of the system is 2.41 kW. The life cycle cost of the system reaches the minimum when the collector area is 168 m², the heat storage tank volume is 11.4 m³, and the water source heat pump heating power is 5.6 kW. After optimization, the average energy saving rate of the system during the cooling season is increased by 4.93%. The monthly COPe of the optimized system is higher than that before optimization, and the performance of the system is improved.

The solar energy and air source heat pump complementary desiccant wheel air conditioning system is proposed. The system reduces the wet bulb temperature of the treated air through a two-stage wheel dehumidifier, and then uses an evaporative cooler to prepare chilled air and chilled water. The thermal performance of the system is studied, the optimization parameters of the system are optimized simultaneously, and the system performance before and after optimization is compared and analyzed. The results show that when the air-to-water ratio is 1.4, the chilled water temperature prepared for the system reaches a minimum and is 15.9 ℃. The life cycle cost of the system reaches the minimum when the collector area is 170 m², the heat storage tank volume is 11.5 m³, and the air source heat pump heating power is 9.6 kW. After optimization, the average energy saving rate of the system during the cooling season is increased by 5.70%. The monthly COPe of the optimized system is 6.3, 7.3, 7.4 and 6.7, respectively.

The economic benefits, energy saving benefits and environmental benefits of the three air conditioning systems of the optimized solar energy and electric energy complementary desiccant wheel air conditioning system, the optimized solar energy and water source heat pump complementary desiccant wheel air conditioning system and the optimized solar energy and air source heat pump complementary desiccant wheel air conditioning system are compared and analyzed. The results show that compared with the solar energy and electric energy complementary desiccant wheel air conditioning system, the annual cost of solar energy and water source heat pump complementary desiccant wheel air conditioning system and solar energy and air source heat pump complementary desiccant wheel air conditioning system are reduced by 44.3 % and 36.1 % respectively, the energy saving rates are 70.6% and 68.2% respectively, and the CO₂ emission reductions are 31316.1 kg and 30253.5 kg respectively.

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