Ice slurry as secondary coolant in air coolers. Mathematical model and validation.

A model for quasi-steady-state simulation of finned tube air coolers with single-phase secondary coolants has been modified in order to permit the study of ice slurry as secondary coolant, which is being nowadays proposed for applications such as supermarkets, cold storages, or air conditioning. The modifications have been implemented in a computer program, which has been validated against experimental data obtained in our laboratory by pumping ice slurry from an ethylene glycol solution through a standard fancoil. Once it was validated, the mathematical model appears as a useful tool to analyse thermal and hydraulic behaviour of this kind of systems, which can help to improve the design of these systems and optimize the operation conditions. In the paper, the mathematical model is described, the validation process is explained in detail and finally, some preliminary results are also reported and commented.

针对采用单相二次冷却剂（secondary coolant）的翅片管空气冷却器准稳态模拟模型已完成修改，旨在支持冰浆作为二次冷却剂的研究——目前冰浆正被提议应用于超市、冷藏库或空调等场景。这些修改已集成至计算机程序中，并通过实验室实验数据验证：实验中，我们将乙二醇（ethylene glycol）溶液中的冰浆泵送通过标准风机盘管（fancoil）。模型验证完成后，该数学模型可作为分析此类系统热力与水力特性的有效工具，助力系统设计改进与运行条件优化。论文中详述了该数学模型，阐释了验证过程，并报告及讨论了若干初步结果。