Finned Tube Steam To Air Radiator for Tea Leaves Drying

Finned Tube Steam To Air Radiator for Tea Leaves Drying

Working Principle

Heat conduction: The base tube is generally made of steel, stainless steel or copper tubing, which has good heat conduction properties. When high-temperature steam is passed into the base tube, a large amount of heat energy carried by the steam is rapidly transferred to the inner wall of the base tube, and then from the inner wall to the outer wall.

Convection heat transfer: the fins attached to the outer wall of the base tube greatly expand the heat dissipation area, the fins and the surrounding air form a large temperature difference, and the heat is transferred from the surface of the fins to the neighboring air molecules in the form of convection heat transfer. After the air is heated, the density decreases and natural convection occurs, the hot air rises and the cold air is added to form a continuous air flow to take away more heat.

Structural components

Finned tube: the core component of the radiator, consisting of a base tube and fins tightly wound or nested on the outer surface of the base tube. The base tube serves as a steam transport channel and is made of metals with excellent thermal conductivity, such as seamless steel tubes. The fins are arranged in spirals, rings or sheets, and are made of materials suitable for the base tube or aluminum alloys that are lighter and have better thermal conductivity.

Heat sink: Usually plate-like structure, closely fit with the finned tube, further increase the heat dissipation area, at the same time, optimize the diffusion path of heat in the air, to ensure the uniform distribution of heat, to avoid local overheating.

Bracket: It shoulders the important responsibility of stabilizing the whole machine, and is welded by sturdy angle steel or channel steel, and is designed into floor-standing, wall-mounted or suspended structures according to the installation scenario and load-bearing requirements of the radiator.

Connection pipe: responsible for the input of steam and condensate output, using high temperature, high pressure and good sealing fittings, accurate docking of the steam source and the radiator, to ensure that the steam passes through smoothly and the condensate is discharged in a timely manner after the heat exchange.

Advantages

Efficient heat dissipation: The fin design greatly increases the heat dissipation area, which enables the heat to be rapidly distributed, improves the tea drying efficiency and shortens the drying time.

Controllable temperature: the temperature and wind speed can be adjusted flexibly according to the demand of tea drying, ensuring that the tea is dried under the best temperature conditions and helping to ensure the quality of tea.

Compact structure: occupies little space, convenient for installation and transportation in tea processing workshop and other places.

Energy-saving and environmental protection: steam as the heat source, high heat utilization rate, compared with electric heating drying and other methods, the energy cost is greatly reduced, but also reduces carbon emissions.

Uniform drying: able to distribute the heat evenly in the drying room, avoiding the quality degradation of tea leaves caused by localized overheating.

Strong applicability: it can be applied to drying tea leaves of different kinds and moisture contents, and has wide applicability.