Normal saline is commonly used in artificial airway humidifying. 濕熱交換器沒有額外的水和熱氣，所以功效不如加熱型增濕器。
The invention relates to a method for humidifying to air or natural gas by alcohol fuel and burning alcohol fuel by internal combustion engine. 本發明涉及一種用醇燃料對空氣或天然氣增濕，用于內燃機摻燒醇燃料的方法。