bare tube

bare tube

[¦ber ′tüb]
(engineering)
In a heat exchanger, a tube whose inner and outer surfaces are both smooth.
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Products and markets covered in this research include Heat Exchangers : Bare Tube, Heat Exchangers : Other, Steam Condensers, Power Boilers : Water Tube : Up To 10000 Lbs/Hr, Power Boilers : Water Tube : 10001 To 100000 Lbs/Hr, Power Boilers : Water Tube : 100001 To 250000 Lbs/Hr, Power Boilers : Water Tube : Over 250001 Lbs/Hr, Power Boilers : Fire Tube : Horizontal, Power Boilers : Fire Tube : Scotch - Hot Water, Power Boilers : Fire Tube : Scotch - Steam, Power Boilers : Other Types, ressure Vessels for Process Applications and Parts + Attachments for Boilers + Pressure Vessels.
The refrigeration system features a low maintenance bare tube condenser coil that reduces the amount of trapped debris, eliminating unnecessary labor costs by requiring cleaning typically only once a year.
Experiments are conducted with air to find the forced convection heat transfer coefficient for bare tube.
Figure 8 shows the comparison of heat transfer coefficient obtained experimentally and by using CFD analysis for bare tube.
Figure 8 shows the comparison between heat transfer coefficients obtained experimentally, analytically and by using Dittus Boelter equation for bare tube, it is observed that h value computational is 10.
Figure 18 shows the comparison of h value obtained experimentally, analytically for bare tube, by inserting wire coils of pitch 66mm, 38 mm and 22 mm for wire diameters of 2 and 3.
0mm is used at Re=12395 when compared to the experimental value of bare tube.
0mm is used at Re=12395 when compared to the computational value of bare tube.
Table 2 shows the percentage improvement in Stanton number for inserted tubes compared to bare tube which is in agreement with the experimental studies carried out by Sethu Madhavan and Raja Rao on turbulent flow heat transfer with helical wire coil inserted tubes [5].
In addition, it has a new bare tube condenser coil in its refrigeration systems, replacing regular fin type condenser coils which tend to trap dirt and debris that can cruise premature failure of the refrigeration compressor.
The modified tubes detected five gases, two of which bare tubes can't sense: the explosive dinitrotoluene and a derivative of the poison sarin.
Instead, bare tubes stand on their caps in permanent display holders.