Steam To Heat Air Heat Exchanger for Drying Room

Steam has a high heat content and as it passes through a heat exchanger, the heat is transferred to the air. A heat exchanger usually consists of a series of tubes or fins to increase the contact area between the steam and the air, thereby increasing the efficiency of heat transfer.

The air absorbs heat from the steam as it passes through the heat exchanger and its temperature rises. The heated air is sent into the drying chamber to provide the required heat for the drying process so that the moisture in the material can evaporate quickly and achieve the purpose of drying.

System Composition

Steam supply system: It includes steam generator or steam boiler, which is used to produce high temperature and high pressure steam. The steam is piped to a heat exchanger that heats the air.

Heat exchanger: As mentioned before, it is the key equipment for heat exchange between steam and air. Commonly, there are tube heat exchangers, plate heat exchangers, etc. Choose the appropriate type according to different application scenarios and requirements.

Ventilation system: It is responsible for sending the heated air evenly into the drying chamber and keeping the air circulating during the drying process to improve the drying effect and efficiency. Ventilation system includes fan, air duct and other components.

Control system: It is used to monitor and control the temperature, humidity, air flow and other parameters in the drying process to ensure that the environmental conditions of the drying chamber meet the drying requirements. The precise control of the drying process is realised by adjusting the steam flow rate, fan speed and so on.

Advantages

High efficiency and energy saving: Steam has a high latent heat and can provide a large amount of heat under a relatively small steam flow rate, thus improving the efficiency of energy utilisation and reducing energy consumption and operating costs.

Precise temperature control: the temperature and pressure of steam are relatively stable, and through the precise control system, the temperature of heated air can be accurately adjusted to meet the temperature requirements of different materials drying and ensure the stability of drying quality.

Clean and environmental protection: compared with some traditional heating methods, steam heating does not produce combustion exhaust and other pollutants, more friendly to the environment. At the same time, the steam system is relatively closed, reducing the pollution of external impurities on the drying process.

Wide range of application: According to different drying needs, by adjusting the steam parameters and ventilation system, it is suitable for drying materials of different types and properties, such as food, medicine, wood, textiles and so on.

Application examples

Food drying: In the food processing industry, such as grain drying, fruit drying, meat drying, etc., the use of steam-heated air drying chamber can ensure the quality and health and safety of food in the drying process, while improving production efficiency.

Pharmaceutical industry: For the drying of pharmaceuticals, the drying temperature and environmental humidity need to be strictly controlled to ensure the quality and stability of the drugs. Steam-heated air drying systems can provide precise temperature control to meet the requirements of the pharmaceutical process.

Wood Drying: Wood requires slow and uniform removal of moisture during the drying process to prevent defects such as deformation and cracking of the wood. Steam-heated drying chambers can achieve effective control of the wood drying process by regulating air temperature and humidity to improve the quality of wood drying.

Textile drying: Drying is an important part in textile dyeing and finishing process. Steam-heated air drying can dry textiles quickly and evenly, while avoiding damage to fibres caused by high temperatures and ensuring the quality and performance of textiles.