Fin Tube----Finned tube radiator production and optional parameters
Finned tube radiator ( referred to as radiators, also known as heat pipes, air heater, air heat exchanger ) : is a refrigerant to cool the air , or air to heat medium heat , or cold air heat recovery , and other heat transfer devices the main equipment . Pass into the hot water , steam or hot air can be heated thermal oil , salt water or cold water through the cooling air . Radiator can be widely used in light industry, construction, machinery , textile, printing and dyeing, electronics, food , starch, pharmaceutical, metallurgy , coating and other industries in the hot air heating , air conditioning, cooling , condensation, dehumidification and drying . Heating radiator : one radiator applications, including heaters, radiators . Finned tube heat sink structure: heat pipes, mains and out of the frame . Among them, the heat from the exhaust pipe cooling tubes composed of heat pipe tubes and fins from the base composition . Heat exchanger tube quality determines the effect , heat pipe arrangement of air resistance , heat pipe installation decided withstand temperature difference ( thermal expansion and contraction ) capability. Common radiator pipe installation : Frame Fixed (SRZ type , SRL -type , S-type ) , frame -supporting (GL , U-shaped ) . Wherein the stationary frame , the heat pipe welded directly to the frame boxes , simple structure , generally used for heating media or 180 ℃ in refrigerant ; -supporting frame , the frame passes through the perforated plate heat pipe , and the communicating pipe ( or elbow ) Welding , generally used for more than 180 ℃ heat medium . Common types of heat pipe : steel cooling pipes ( steel pipe around the fin , hot galvanized ) , steel and aluminum composite heat pipes ( steel rolled aluminum fins ) , copper heat pipe ( copper wound copper fins , the lining of tin processing ) , aluminum composite heat pipe ( copper rolled aluminum fins ) , stainless steel heat pipes ( stainless steel finned tube around , high-frequency welding ) . Among them, the steel heat pipes , hot dip galvanized is the key, you can fill the gap , solid fin , efficient heat transfer , high corrosion ; copper heat pipes , lining of tin is the key. Radiator main technical parameters: cooling area , ventilation net cross-sectional area , the heat transfer coefficient . Among them, the amount of heat dissipation area affected is the radiator major cost parameters ; ventilation affect the net cross-sectional area ventilation resistance ; heat transfer coefficient of heat transfer effects . Drying radiator selection parameters : heat medium ( steam, hot water ) , hot air , materials. Where: steam ( pressure, temperature ) , water ( water temperature, water temperature , flow ) , hot air ( flow rate , inlet air temperature , humidity ( moisture ) , air temperature , air resistance ) , material ( heat loss , evaporation water ) heat radiator selection parameters: heat medium ( steam, hot water ) , space, geography, insulation. Where: steam ( pressure, temperature ) , water ( water temperature, water temperature , flow ) , space ( length , width, height ) .
Finned tube radiator production and optional parameters
About Production Technology
1 A steel finned tube convection radiator should be approved product manufacturing drawings and technical documents , and should meet the requirements of this standard .
2 Steel finned tube convection radiator cover with the backplane , box joint possession . Strip, plate and cover both ends of the shield material should comply with the relevant provisions of the standard and quality of the materials should have a certificate of compliance .
3 Pipe ovality should not be greater than 0. 3 mm, steel other projects should be consistent with GB / T 3092, GB / T 3087, GB / T 8163 requirements.
4 Should be used to ensure that high-frequency welding or other fastening methods between steel tube and steel strip . JG / 'r 3012. 2 a 1998
5 Steel, welded steel pipe should be no surface coating , rust, dents affect the quality of welding defects and impurities.
6 Quality requirements finned tubes finned tube pitch 6-7 mm, fin height should be greater than 15 mm, fin rake angle should not exceed 80 per linear meter of the finned tube should not be greater than 1.0 m m. For high frequency welding process finned tubes, the sum of the actual weld length per meter of finned tubes Survey Office should be greater than 85 , and not a continuous weld length should not exceed 50 mm.
7 Steel finned tube convection radiator welding quality requirements: steel tube and pipe for collusion comply with GB 151 's . Welding shall comply with the provisions of GB / T 985 's .
8 Steel finned tube convection radiator cover should be preceded by groups hydraulic or pneumatic pressure test , the test pressure is 1.5 times the working pressure .
9 Steel finned tube convector take over the thread should comply JG .1 31 's .
10 Film quality requirements of steel finned tube convection radiator should spray anti-rust primer and topcoat ; panel should paint, paint preparation should be consistent with the provisions of GB / T 1727 's . Surface coating should be uniform and smooth , firmly attached , without bubbles, accumulation , flow and leak jet .
About buy
How to choose the finned tube radiator is indeed a problem consumers need to think carefully . Some focus on thermal efficiency, concerned about whether significant results can be obtained in a short time ; somewhat due to environmental factors, focusing on whether corrosion ; still concerned about the appearance is beautiful. All of these measures . So what is the most basic , it can not be ignored ?
First: the fin tube radiators working pressure , working pressure of the system should meet and comply with existing national product standards ; Second: civil construction should adopt the appearance and easy cleaning of the radiator fins ;
Third: diffuse dust or dust demanding industrial buildings, should be easy to clean the radiator fins ;
Fourth: industrial buildings or relative humidity of the room with corrosive gases should be corrosion- resistant pipe radiator fins ;
Fifth : When using steel finned tube radiators, should adopt a closed system and water quality to meet the product requirements in the non- heating season should be filled with water heating system maintenance ;
Sixth: When using aluminum finned tube radiators, should be used in the anti-corrosion aluminum finned tube radiators, water quality and to meet the product requirements ;
Seventh : choose a regular finned tube radiator manufacturer, has a better after-sales installation guide, technical support, easy heating, sit back and relax .
Key Words: Fin Tube, Finned Tube radiator, aluminum finned tube, heat pipe, tubos aletados