Heat exchange media

Heaters, radiant Heat exchange Heat-exchange fluids Heat exchange media Heat exchanger Heat exchangers... 

In recent years there has been a continued interest in the use of alkali metals, notably sodium and lithium, as heat exchange media in nuclear reactors and fusion systems respectively and as chemical reactants in fuel cells. This interest is reflected in the proceedings of several major conferences which are referenced in the bibliography (see p. 2.109). 

Fischer, J.C. (1988) High efficiency sensible and latent heat exchange media with selected transfer for a total energy recovery wheel. US Patent 4,759,053. 

One of the major problems inherent in the manufacture and use of early refrigerators was that all of the heat exchange media on which they operated—ammonia, butane, sulfur dioxide, and methyl chloride, for example—were either toxic or flammable. Until this problem was overcome, selling consumers on the idea of home refrigeration units posed some serious challenges. 

Heat exchange media - [ALUMINUMCOMPOUNDS - ALUMINIUMOXIDE(ALUMINA) - CALCINED, TABULAR, AND ALUMINATE CEMENTS] (Vol 2)... 

Small production units employ 4 inch diameter brass tubes 16 inches long, heated by electric resistor ribbons, while large production units require shell and tube reactors heated by a molten salt circuit. Organic heat exchange media are not recommended as at 250 °C they would undergo a fairly rapid thermal degradation. 

Use Air conditioning, welding and soldering flux, dry batteries, heat-exchange media, salt baths, desiccant, production of lithium metal, soft drinks and mineral water to reduce escape of carbon dioxide. 

EINECS 232-218-9 Lithium nitrate Nitric acid, lithium salt UN2722. Ceramics, pyrotechnics, salt baths, heat exchange media, refrigeration systems, rocket propellant. Crystals mp = 251 d = 2.3800. Atomergic Chemetals Cerac Mallinckrodt Inc. 

Figure 5.21 shows a surface-cooled crystallizer that utilizes Teflon tubes as the heat exchanger media. The Teflon tubes... 

Screw conveyors 10-120 rpm and trough loading 15-95 % depending on the particle size, flowability, abrasiveness. Diameter 0.3-0.4 m. Power 10-20 kW/Mg/h per km horizontal distance. Can use hollow screws with heat exchange media flowing inside the screw. See Section 3.3. 

Uses Drying agent for dehumidification in the air conditioning Industry desiccant production of iithium metai battery eiectroiyte weiding and soidering fiux heat-exchange media sait baths as substitute for NaCi in sait-free diets soft drinks and minerai water to reduce escape of carbon dioxide... 

Uses Welding and soldering flux ceramics heat-exchange media synthetic crystals in infrared and UV instruments rocket fuel component radiation dosimetry component of fuel for molten salt reactors x-ray diffraction mfg. of vitreous enamels, glazes flux in enamels, glasses... 

Dichlorofluoromethane Perchloroethylene heat exchange media Lithium nitrate heat exchange medium Tri-m-cresyl phosphate Tri-p-tolyl phosphate heat insulation/refractory Magnesium carbonate heat insulator mfg. 

Nickel dibutyidithiocarbamate heat-exchange fluid Chlorodiphenyl (54% Cl) heat-exchange media Lithium chloride Lithium fluoride heat-exchange media, low-temp. 

Sodium metal comes from the electrolysis of molten sodium chloride in an apparatus called the Downs cell after its inventor J. C. Downs. Molten sodium forms at the cathode. Sodium metal wreis formerly very important in the process for making the gasoline additive tetraethyl lead. As leaded fuel is no longer sold in the United States, this use has declined, but sodium continues to be used in organic syntheses, the manufacture of titanium, and as a component (with potassium) in high-temperature heat exchange media for nuclear reactors. 

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