In the process of ocean transportation or storage, containers often experience high temperature climate and strong diurnal temperature difference. The temperature change will be 0-8 ℃ and the humidity will be as high as 98%. This is the condensation phenomenon. When the temperature is 30 ℃, the water content in the air is 30.4g per square meter. When the temperature drops from 30 ℃ to 18 ℃, the water vapor will condense into water droplets. If it is a 40 foot container, it will produce 1000 grams of condensed water, which will cause "container rain".

工地集装箱的水取决于天气状况，海运航程的长短，货物包装材料、集装箱状况以及货物的敏感度等。真菌、霉菌、霉在相对湿度超过55%时会对货物造成损坏。

The water content of the site container depends on the weather conditions, the length of the sea voyage, the packaging materials of the goods, the condition of the container and the sensitivity of the goods. Fungi, molds and molds will damage the goods when the relative humidity exceeds 55%.

集装箱里面有水主要可分以下几种情况：货物自带、箱体凝结、海水入浸、淡水入浸

There is water in the container, which can be divided into the following situations: goods brought, condensation, seawater immersion, fresh water immersion
             

1、货物自带

1. Bring your own goods

湿气或水分随货物一起被带入集装箱。举个例来说，如果一个集装箱内装了5吨的家具，家具本身就会含有大概8%到25%的湿度，根据木材类型、家具干燥处理程度的不同而有所不同。这相当于大约400-1250升的水。这里边的湿气有些就会散发到集装箱内的空气中，成为集装箱水汽凝结的一个重要来源。

Moisture or moisture is carried into the container with the cargo. For example, if a container contains 5 tons of furniture, the furniture itself will contain about 8% to 25% humidity, depending on the type of wood and the degree of drying. That's about 400-1250 liters of water. Some of the moisture will be sent out to the air inside the container, and become an important source of water vapor condensation in the container.

2、箱体凝结

2. Box condensation

在轻钢活动房远洋运输或存储过程中，货柜往往会经历高温气候及较强的昼夜温差变化，温度变化会在0-8摄氏度，湿度会高达98%，这就是凝露现象，当温度为30度时，空气中水含量为30.4g每。当温度由30摄氏度降低到18摄氏度，水蒸气就会凝结成水滴，若是40英尺货柜则产生1000克的冷凝水，就会造成“集装箱雨”。

In the process of ocean transportation or storage of light steel mobile house, containers often experience high temperature climate and strong diurnal temperature difference. The temperature change will be 0-8 ℃ and the humidity will be as high as 98%. This is condensation phenomenon. When the temperature is 30 ℃, the water content in the air is 30.4g per square meter. When the temperature drops from 30 ℃ to 18 ℃, the water vapor will condense into water droplets. If it is a 40 foot container, it will produce 1000 grams of condensed water, which will cause "container rain".