Finned tube radiators commonly known as finned tube radiators (referred to as radiators, also known as heat dissipation tubes, air heaters, air heat exchangers): cooling air with refrigerant, or heating air with heat medium, or recovering air with cold water. Residual heat, the main equipment in heat exchange equipment. Pass high temperature water, steam or high temperature heat transfer oil to heat the air, pass salt water or low temperature water to cool the air.
Radiator can be widely used in light industry, construction, machinery, textile, printing and dyeing, electronics, food, starch, medicine, metallurgy, painting and other industries in the hot air heating, air conditioning, cooling, condensation, dehumidification, drying and so on.
Heating radiator: It is one of the radiator applications, including heaters and radiators.
Finned tube radiator structure: heat dissipation tube, inlet and outlet manifold, frame.
Wherein, the heat dissipation tube is composed of a heat dissipation tube bundle, and the heat dissipation tube is composed of a base tube and a fin. The heat pipe quality determines the heat transfer effect, the heat pipe arrangement mode affects the air resistance, and the heat pipe installation mode determines the ability to withstand the temperature difference (thermal expansion and contraction).
Commonly used heat pipe installation methods: frame fixed type (SRZ type, SRL type, S type), frame supported type (GL type, U type).
Among them, the frame is fixed, the heat pipe is directly welded to the frame box, and the structure is simple, generally used for heat medium or refrigerant below 180 ° C; the frame support type, the heat pipe passes through the frame porous plate, and is welded with the connecting pipe (or elbow) It is generally used for heat medium above 180 °C.
Commonly used heat pipe types: steel heat pipe (steel pipe around steel fins, hot-dip galvanizing), steel-aluminum composite heat pipe (steel-rolled aluminum fins), copper heat pipe (copper pipe around copper fins, antimony tin treatment) ), copper-aluminum composite heat pipe (copper pipe rolled aluminum fin), stainless steel "target=_blank> stainless steel heat pipe (stainless steel "target=_blank> stainless steel pipe around stainless steel" target = _blank > stainless steel fins, high frequency welding).
Among them, steel heat pipe, hot-dip galvanizing is the key, can fill the gap, stabilize the fins, efficient heat transfer, high-efficiency anti-corrosion; copper heat pipe, tin is the key.
Main technical parameters of the radiator: heat dissipation area, net cross-sectional area of ​​ventilation, heat transfer coefficient.
Among them, the heat dissipation area affects the heat dissipation, which is also the main cost parameter of the radiator; the net cross-sectional area of ​​the ventilation affects the ventilation resistance; the heat transfer coefficient affects the heat transfer effect.
Drying radiator selection parameters: heat medium (steam, hot water), hot air, materials.
Among them: steam (pressure, temperature), hot water (inlet water temperature, outlet water temperature, flow rate), hot air (flow, inlet air temperature, humidity (water content), air temperature, air resistance), materials (heat consumption, evaporation) Water quantity)
Insulation radiator selection parameters: heat medium (steam, hot water), space, area, insulation.
Among them: steam (pressure, temperature), hot water (inlet water temperature, outlet water temperature, flow rate), space (length, width, height).
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