文摘
A solar raw petroleum heating system to reduce viscosity of the petroleum for its easier piping transport is introduced in this paper. Some aspects of design and operation are described. Natural gas, oil and water are simultaneously contained in the raw petroleum, which need to be heated during its piping transport. In order to make the system reliable, advanced heat-pipe evacuated tube solar collectors have been used for the solar heating system. Practical operation results have shown that about 30% of daily average natural gas consumption could be saved.