1. The steady-flow energy-equation (SFEE) can be applied to many open-system applications. Start from the basic SFEE: a. What is the total heat rate that is needed for a boiler, in terms of enthalpies and mass flow rate? b. How can the compressor work be calculated, in terms of enthalpies and mass flow rate? c. R134a refrigerant enters a compression cycle at 165 kPa and -12 °C, then leaving the compressor at 370 kPa and 45 °C. If the closed-loop mass flow rate is 0.06 kg/s, how much power is needed to drive a compressor with an efficiency is 80%.

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Classification of types of corrosion

Corrosion is described as the process in which a certain element is degraded or deteriorated due to the presence of multiple chemicals in the surrounding. Generally, corrosion happens if all the subatomic particles on a metallic object are oxidized, for example, rust on iron structures. In air or water, metals lose electrons to other particles (like oxygen), leading to the formation of an oxide with the metal.