CHEN 4501W Lecture Notes - Lecture 22: Butene, Inta, Opata Language
16 Oct 2015
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Hw5 - out on monday 12, due 2 weeks later. Estimate the costs of building and running the system. Large deltat --> smaller area needed for heat transfer --> greater compressor costs compressors usually have the greater cost. Typically, we choose pl >= pr (of reactor) Use graph to find refrigerant for right t and p (the conditions that we want) From figure a. 9-14 -> sulfur dioxide, isobutane dumping in isobutane into reactor isn"t a problem, sulfur dioxide would be bad. Normally, we desire pressures in regrigeration cycle to be greater than the surroundings. In actuality, the design of this process is an involved optimization problem. => for conceptual design, we want reasonable estimates. => detailed design --> later the higher the d --> c line, the more cost for compressors, but the more money saved on heat exchanger next task, choose ph and th.
