PRESSURE DROP ANALYSIS IN COOLING WATERNETWORKS

PRESSURE DROP ANALYSIS IN COOLING WATERNETWORKS

SILVA, I. M. O.; ZEMP, R. J.

Artigo:

Cooling water systems are the most common method for the re-jection of waste heat in chemical processes. Conventional re-circulating cool-ing water systems have a network of coolers in a parallel configuration, de-manding both large cooling water circulation and cooling towers. Althoughreuse of cooling water reduces the amount of water that is necessary in the sys-tem and, hence, increases the cooling tower performance and capacity, it maysignificantly increase the pressure drop due to series-parallel arrangements.This paper develops a methodology for the pressure drop calculation basedon the Graph Theory. From the adjacency matrix of cooler network, it uses thetopological sorting and critical path algorithms in order to evaluate the pres-sure drop in a network with coolers in series-parallel arrangements. Applyingthis methodology to a cooler network with cooling water reuse, it is possibleto analyse the impact of increased pressure drop when compared to a network

Cooling water systems are the most common method for the re-jection of waste heat in chemical processes. Conventional re-circulating cool-ing water systems have a network of coolers in a parallel configuration, de-manding both large cooling water circulation and cooling towers. Althoughreuse of cooling water reduces the amount of water that is necessary in the sys-tem and, hence, increases the cooling tower performance and capacity, it maysignificantly increase the pressure drop due to series-parallel arrangements.This paper develops a methodology for the pressure drop calculation basedon the Graph Theory. From the adjacency matrix of cooler network, it uses thetopological sorting and critical path algorithms in order to evaluate the pres-sure drop in a network with coolers in series-parallel arrangements. Applyingthis methodology to a cooler network with cooling water reuse, it is possibleto analyse the impact of increased pressure drop when compared to a network

Palavras-chave:

DOI: 10.5151/chemeng-cobeq2014-1773-17630-134927

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Como citar:

SILVA, I. M. O.; ZEMP, R. J.; "PRESSURE DROP ANALYSIS IN COOLING WATERNETWORKS", p-12800-12807. In: Anais do XX Congresso Brasileiro de Engenharia Química - COBEQ 2014 [= Blucher Chemical Engineering Proceedings, v.1, n.2]. São Paulo: Blucher, 2015.
ISSN 23591757, DOI 10.5151/chemeng-cobeq2014-1773-17630-134927