| http://www.w3.org/ns/prov#value | - Examples which may be mentioned of heating equipment are: direct flame application, electrical heater strips, and heating jackets or heating pipes through which there is a flow of heat-transfer fluid, such as water, silicone oils, paraffins, or other organic compounds suitable for heat-transfer, inorganic molten salts, e.g. sodium nitrate/potassium nitrate mixtures, or low-melting metal alloys, or
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