6644 Coal Processing

Numerous coal gasification systems are available today. The most common systems are moving-bed or fixed-bed reactors, fluidized-bed reactors, and entrained-bed reactors, all of which use steam and air or oxygen to partially oxidize coal into a gaseous product. Heat required for gasification is essentially supplied by the partial oxidation of the coal. Overall, the gasification reactions are exothermic, so waste heat boilers are often utilized at the gas-ifier effluent. The temperature, and therefore composition, of the product gas is dependent upon the amount of oxidant and steam and the design of the reactor that each gasification process utilizes.

Solar Stirling Engine Basics Explained

Solar Stirling Engine Basics Explained

The solar Stirling engine is progressively becoming a viable alternative to solar panels for its higher efficiency. Stirling engines might be the best way to harvest the power provided by the sun. This is an easy-to-understand explanation of how Stirling engines work, the different types, and why they are more efficient than steam engines.

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