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Category > Engineering Posted 07 May 2017 My Price 3.00

Oxygen enters an insulated 12-cm-diameter pipe

1. Oxygen enters an insulated 12-cm-diameter pipe with a velocity of 70 m/s. At the pipe entrance, the oxygen is at 240 kPa and 20°C; and, at the exit, it is at 200 kPa and 18°C. Calculate the rate at which entropy is generated in the pipe.

 

2. Nitrogen is compressed by an adiabatic compressor from 100 kPa and 25°C to 600 kPa and 290°C. Calculate the entropy generation for this process, in kJ/kg·K.

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Alpha Geek
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Status NEW Posted 07 May 2017 10:05 AM My Price 3.00

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file 1494152401-Answer.docx preview (118 words )
1-----------. O-----------xyg-----------en -----------ent-----------ers----------- an----------- in-----------sul-----------ate-----------d 1-----------2-c-----------m-d-----------iam-----------ete-----------r p-----------ipe----------- wi-----------th -----------a v-----------elo-----------cit-----------y o-----------f 7-----------0 m-----------/s.----------- At----------- th-----------e p-----------ipe----------- en-----------tra-----------nce-----------, t-----------he -----------oxy-----------gen----------- is----------- at----------- 24-----------0 k-----------Pa -----------and----------- 20-----------°C-----------; a-----------nd,----------- at----------- th-----------e e-----------xit-----------, i-----------t i-----------s a-----------t 2-----------00 -----------kPa----------- an-----------d 1-----------8°-----------C. -----------Cal-----------cul-----------ate----------- th-----------e r-----------ate----------- at----------- wh-----------ich----------- en-----------tro-----------py -----------is -----------gen-----------era-----------ted----------- in----------- th-----------e p-----------ipe-----------. -----------2. -----------Nit-----------rog-----------en -----------is -----------com-----------pre-----------sse-----------d b-----------y a-----------n a-----------dia-----------bat-----------ic -----------com-----------pre-----------sso-----------r f-----------rom----------- 10-----------0 k-----------Pa -----------and----------- 25-----------°C----------- to----------- 60-----------0 k-----------Pa -----------and----------- 29-----------0°-----------C. -----------Cal-----------cul-----------ate----------- th-----------e e-----------ntr-----------opy----------- ge-----------ner-----------ati-----------on -----------for----------- th-----------is -----------pro-----------ces-----------s, -----------in -----------kJ/-----------kgÂ-----------·K.----------- A-----------nsw-----------er ----------- Th-----------ank----------- yo-----------u f-----------or
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