Abstract In this study, an unique bamboo floating cage was built in order to heat the water used for rearing Nile tilapia (Oreochromis mossambicus x O. niloticus) and climbing perch (Anabas testudineus, Bloch) in Northern Thailand during the colder rainy and winter seasons. This special greenhouse fish cage (SGFC) was covered with polyethylene to heat the surface air with solar energy, and insulated to prevent heat loss. The water temperature at depths of 0.1, 0.3 and 0.8 meters was modeled and measured. In various trials, the cages were aerated with and without heated air from the surface. It was found that the thermal efficiency of the SGFC integrated with hot air aeration at a water depth of 0.80 m was 32.65%. Throughout the day, the average water temperature was 31.82 ± 0.68 °C, which was 0.76 °C higher than the water temperature outside the experiment, and the amount of oxygen in the water of 11.35 ± 0.13 mg/l. The SGFC can produce one extra fish harvest per year when compared with regular fish cages. Development equations to describe the thermal model were used for predicting the water temperature in the SGFC and thus validating the model. Moreover, the economic analysis of the SGFC found that the payback period was one year, seven months and fourteen days.

中文翻译：

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模拟和实施使用曝气提高温室水产养殖网箱中的水温和溶氧

摘要 在这项研究中，为了在寒冷的雨季和冬季在泰国北部加热用于饲养尼罗罗非鱼 (Oreochromis mossambicus x O. niloticus) 和攀缘鲈鱼 (Anabas testudineus, Bloch) 的水. 这种特殊的温室鱼笼 (SGFC) 被聚乙烯覆盖，用太阳能加热表面空气，并隔热以防止热量流失。对 0.1、0.3 和 0.8 米深处的水温进行建模和测量。在各种试验中，在有和没有来自表面的热空气的情况下对笼子充气。结果表明，在0.80 m水深下，SGFC与热风曝气结合的热效率为32.65%。全天平均水温为31.82±0.68℃，为0。比实验外水温高76℃，水中含氧量为11.35±0.13mg/l。与普通网箱相比，SGFC 每年可以多收获一个鱼。描述热模型的发展方程用于预测 SGFC 中的水温，从而验证模型。而且，国金金融的经济分析发现，投资回收期为一年七个月十四天。