PDF(Pubmed)
Abstract：
The selection of water temperature regulation equipment plays a crucial role in the design of workshops. At present, the choice of water temperature control equipment is usually based on the volume of the fish pond and thermal parameter calculation, combined with aquaculture experience. Empirical formulas only work in specific conditions due to factors like the environment, climate, and fish types,resulting in inaccurate equipment selection outcomes. Recognizing this limitation, this paper proposes to apply CFD simulation of the temperature field to accurately calculate the heat exchange value between indoor air and water, thereby predicting the heat exchange values during aquaculture activities in the aquaculture workshop. providing a new approach for equipment selection. This paper selects a puffer fish breeding workshop in Dalian as the simulation object, establishing a 3D unsteady-state Computational Fluid Dynamics model. The model considers outdoor temperature, solar radiation, and phase-change heat transfer in water. Comparison with experimental data reveals a root mean square error of 0.46°C for the simulated results. During summer, the highest cooling load occurs at 16:00, reaching 94.6 kW. It is recommended to employ the Daikin GCHP-40MAH ground source heat pump as the water temperature control equipment. CFD simulation validates its effectiveness in shaping the indoor temperature field post-installation. the investment in water temperature control equipment can be reduced to a certain degree. This provides a reference value for the selection of water temperature equipment in aquaculture workshops.
摘要：
水温调节设备的选择在车间设计中起着至关重要的作用。目前,水温控制设备的选择通常是根据鱼塘的容积和热参数计算，结合水产养殖经验。由于环境等因素，经验公式仅在特定条件下有效，气候,和鱼类类型，导致设备选择结果不准确。认识到这一限制，本文提出应用温度场的CFD模拟精确计算室内空气与水的热交换值,从而预测水产养殖车间水产养殖活动期间的热交换值。为设备选型提供了新的途径。本文选取大连某河豚养殖车间为模拟对象,建立三维非稳态计算流体动力学模型。该模型考虑了室外温度，太阳辐射,和水中相变传热。与实验数据的比较显示，模拟结果的均方根误差为0.46°C。在夏天,最高的冷却负荷发生在16:00，达到94.6千瓦。建议采用大金GCHP-40MAH地源热泵作为水温控制设备。CFD模拟验证了其在安装后塑造室内温度场的有效性。可以在一定程度上减少对水温控制设备的投资。这为水产养殖车间水温设备的选择提供了参考价值。
