Question

outside air at 38 db and 60 percent relative humidity enters a cooling and dehumidifying device at a volumetric flow rate of 3800 m3/h. the air leaves the device at

Answer 1

The relative humidity will decrease as the temperature increases from 20.0°C to 30.0°C, assuming the water vapor density remains constant.

Step-by-step explanation:

The question you provided is asking about the change in relative humidity when the temperature increases from 20.0°C to 30.0°C, assuming the water vapor density remains constant.

To determine the change in relative humidity, we first need to understand how temperature affects the ability of air to hold water vapor. The warmer the air, the more water vapor it can hold. This is because warm air has a higher capacity for water vapor than cooler air.

For example, if the relative humidity is 90.0% at 20.0°C, it means that the air is holding 90.0% of the maximum amount of water vapor it can hold at that temperature. When the temperature increases to 30.0°C, the air can now hold more water vapor. Therefore, the relative humidity will decrease because the same amount of water vapor is now a smaller percentage of the air's capacity.

It is important to note that this is a simplified explanation, and there are other factors that can affect relative humidity. However, in this scenario where the water vapor density remains constant, we can conclude that the relative humidity will decrease as the temperature increases.