Cantos de bodega

En número dedicado a: Zaragoz

La contradanza de Cetina

En número dedicado a: Zaragoz

Socio-spatial research on logistics and its impact on urban environment: A review

This review article attempts to respond to the following research questions: How has evolved socio-spatial analysis on logistics, which are the most studied types of this economic activity, and the major impacts of logistics on urban space. This article draws on a systemized bibliometric analysis to identify the main tendencies in logistics' spatial study. It identifies four clusters of literature that put interest on different subtopics and approaches. The review reveals the current hegemony of applied research that focuses on sustainability, streamlining, and technology, mainly from the USA and China, despite research on globalization and industry. In fact, concerning the urban space, the most vivid academic discussion revolves around the location of warehousing and transport activity within cities. Finally, the article highlights the lack of critical perspectives on logistics and socio-spatial conflicts generated by logistics extension inmainstream academic literature. The analysis concludes that socio-spatial disputes related to logistics remain understudied and, consequently, further research should be conducted on this field. © 2021 WITPress. All rights reserved.This work was supported by the European Commision-Erasmus+ Programme under Grant 611583-EPP-1-2019-1-ES-EPPJMO-MODULE; and the Instituto Universitario para el Desarrollo social y Sostenible (INDESS) of the University of Cádiz. The authors would like to thank Iban Diaz-Parra for his valuable suggestions on previous draft of the manuscript and to the help of Alex Aguirre and Álvaro García Rosa with different stages of the research process

Experimental determination of drift loss from a cooling tower with different drift eliminators using the chemical balance method

The existence of cooling towers arises from the need to evacuate power to the environment from engines, refrigeration equipment and industrial processes. Water drift emitted from cooling towers is objectionable for several reasons, mainly due to human health hazards. It is common practice to fit drift eliminators to cooling towers in order to minimise water loss from the system. The presence of the drift eliminator mainly affects two aspects of cooling towers: their thermal performance and the amount of water drift loss. This paper experimentally studies the drift loss emissions from a cooling tower without drift eliminator and fitted with six different drift eliminators. Chemical Balance is the selected method and Australian Standard methodology is taken as a reference. Some modifications are proposed to reduce uncertainty by increasing the duration of the test and the number of water samples. Installation of a drift eliminator, even in the worst case, reduces the water drift level to less than half of the situation without the eliminator. The water drift losses obtained with the different drift eliminators installed at the pilot plant, from 0.0118% to 0.161%, are within the range generally reflected in the literature. Finally, a criterion for designing drift eliminators in order to optimise both the collection efficiency and the cooling tower's thermal performance is proposed.This research has been partially financed by the project DPI2007-66551-C02-01 grant from the “Dirección General de Industria, M. de Ciencia y Tecnología”, the project 2I05SU0029 grant of the “Secretaría General de la Consejerí de Educación y Cultura de la C.A. de la Región de Murcia” and the HRS Spiratube Company, Murcia (Spain)