Tsai Hung-Yi, Wu Chung-Tai
Lee-Ming Institute of Technology, Taiwan.
Heliyon. 2022 Sep 27;8(10):e10796. doi: 10.1016/j.heliyon.2022.e10796. eCollection 2022 Oct.
Excessive condensation on cooling coils can be costly energy-wise due to humid process air streams. An innovative desiccant cooling system is introduced into an existing hotel in Taoyuan, Taiwan, where the ambient is humid year-round. Rejected heat from the existing cooling system is used as the energy source to heat the regeneration airstream for dehumidification of the process airstream via a rotary desiccant wheel. The paper develops and validates a numerical model for the heat and mass (moisture) transfer of the rotary desiccant wheel. The validated numerical model is used to simulate the expected performance of the rotary wheel under various conditions and operating strategies. The desiccant wheel's performance includes the steady-state moisture removal capacity (MRC) and the transient response time to reach steady-state. The examined factors include the ambient temperature and humidity, air flow rate, rotational speed of the wheel, wheel-split, and regeneration airstream temperature. From the simulation results, the paper offers the optimized control strategies for the operation of the rotary desiccant wheel system in the hotel.
由于潮湿的工艺空气流，冷却盘管上的过度冷凝在能源方面可能成本高昂。一种创新的除湿冷却系统被引入台湾桃园的一家现有酒店，该酒店全年环境潮湿。现有冷却系统排出的热量被用作能源，通过旋转式除湿轮加热再生空气流，以对工艺空气流进行除湿。本文开发并验证了旋转式除湿轮的热质（水分）传递数值模型。经验证的数值模型用于模拟旋转轮在各种条件和运行策略下的预期性能。除湿轮的性能包括稳态除湿能力（MRC）和达到稳态的瞬态响应时间。研究的因素包括环境温度和湿度、空气流速、转轮转速、转轮分隔以及再生空气流温度。根据模拟结果，本文为酒店旋转式除湿轮系统的运行提供了优化控制策略。
