Design procedures of the copper shall type heat exchangers was put forward, through the stress situation at the copper pipe is connected with tube plate and the difference with the steel shall type heat exchangers.
Comes to the conclusion that the material energy consumption for profiled steel bar,reinforcing steel bar,stainless steel pipe,copper pipe and profiled aluminum bar are respectively about 1.17tce/t,1.47tce/t,2.3tce/t,2.85tce/t and 4.43tce/t.
From the experiments conclusions in the paper,it showed that on the condition of thick confined copper pipe and with the pressure less than 13.8MPa. When the mass of the BKF_1 was 250mg or the mass of the BKF_2 was 200mg,HGL was 600mg,LYFwas 600mg.
The practice of Huaneng Beijing Thermal Power Plant shows that the harmfulness of ammonianitrogen, as well as organic substances in the secondary urban sewage after deep treatment can be eliminated by adopting effective scaleinhibiting, corrosionpreventing and sterilizing treatments, as well as scientific technical management after feedingin circulating cooling water system, making the corrosion rate of copper tubing in the condenser to satisfy the requirements of standard.
An experiment has been carried out to investigate the local convective heat transfer from a horizontal circular copper tube in an acoustic cavitation field.
The surfactant additive octadecylamine (ODA) was used to enhance the flow boiling heat transfer of water in vertical copper tube, and the effects of the aqueous solution properties, mass fraction of ODA, mass flux and heat flux etc.
Titanium Carbide Self-Propagating High-Temperature Synthesis in a Non-centered Copper Tube
Self-propagating high-temperature synthesis was performed on an equimolar mixture of titanium and graphite embedded in a copper tube of variable thickness.
The mean heat transfer coefficient, evaluated from the mean heat flux and the mean wall superheat, can be determined more easily for a copper tube than for a tube with low heat conductivity, e.g.
Results are presented for an experimental investigation of heat transfer for longitudinal water flow at Re=1000-12,000 over a staggered tube bundle consisting of 19 copper tubes with a relative spacing of s/d=1.22.
Bare copper tubes as well as pyrex coated tubes are utilized and the measured heat fluxes to the locally floating copper surfaces are found to be identical to those of pyrex coated surfaces.
Condensation of vapors of immiscible binary liquids on horizontal copper and polytetrafluoroethylene-coated copper tubes
Heat transfer data are reported for the condensation of pure organic vapors and their eutectic mixtures with water on both horizontal one inch diameter copper and polytetrafluoroethylene-coated copper tubes at atmospheric pressure.
Using this device, copper tubes of diameter 25.4 mm were bulged.