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Written solution only please. No typed answers Compare the magnitude of the amount of energy required to perform various operations in a plant environment. For
Written solution only please. No typed answers
Compare the magnitude of the amount of energy required to perform various operations in a plant environment. For this problem consider 1m3 of water. When reporting the answers to this question, report in base or derived SI units using scientific notation. (e.g. report 13MJ as 1.3107J ) A) What is the mass of 1m3 of water [kg], and how many g-moles? B) Kinetic Energy: It is common to transfer water from one part of a plant to another in a pipeline. A typical design velocity in a water pipeline is 2m/s. How much energy does it take to accelerate 1 m3 to 2m/s ? C) Potential energy: A cooling tower is 17m high. How much energy does it take to raise 1m3 of water by 17m ? D) A If the pump in part C is 75% efficient, how much (electrical) energy was put into the pump? If the inefficiencies all go to raise the temperature of the water, how much did the temperature of the water rise? E) Work: How much (PV) work is required to raise the pressure of 1m3 of water by 1000kPa ? F) Internal Energy from heat: How much (thermal) energy is removed to cool 1m3 of water by 20C ? (Use the steam tables, or indicate a source for the specific heat of water) G) How much (thermal) energy is does it take to vapourize 1m3 of liquid water at P=1 atmosphere, T=100C to saturated steam at 1 atmosphere H) Compare the energy required to accomplish steps B through G. Why do we focus on internal energy (and, for flowing systems, enthalpy) when we are doing our energy balancesStep by Step Solution
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