Pregled bibliografske jedinice broj: 986592
Validation of CUSUM control chart for biofouling detection in heat exchangers
Validation of CUSUM control chart for biofouling detection in heat exchangers // Applied thermal engineering, 152 (2019), 24-31 doi:10.1016/j.applthermaleng.2019.02.009 (međunarodna recenzija, članak, znanstveni)
CROSBI ID: 986592 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Validation of CUSUM control chart for biofouling
detection in heat exchangers
Autori
Boullosa-Falces, David ; Gomez-Solaetxe, Miguel Angel ; Sanchez-Varela, Zaloa ; García, Sergio ; Trueba, Alfredo
Izvornik
Applied thermal engineering (1359-4311) 152
(2019);
24-31
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
biofouling ; heat exchanger ; CUSUM chart ; predictive maintenance ; seawater
Sažetak
Biofouling is an undesirable phenomenon in heat exchangers, which adheres slowly and progressively to the inner surface of the tubes, results in a reduction of the heat transfer, and increases the operating and maintenance costs. Controlling this phenomenon is essential to ensure that the equipment operates under optimal conditions. Different biofouling detection methods are currently available, depending on the properties of the fluid or by means of intrusive elements in the process. In this paper, the validation of the CUSUM control graph as an alternative technique to conventional detection methods is proposed. This type of graph is very efficient in the early detection of slow and progressive changes within a process. In a pilot plant, formed by two tubular heat exchangers, biofouling was allowed to grow until experimental variables indicated that growth had occurred. The biofouling growth was monitored through the evolution of the heat transfer resistance Rf, which is a technique that has been widely validated for this purpose, and through the CUSUM control graphs. The variable Rf, clearly indicates the different phases of growth. However, the evolution of this variable depends on the physical-chemical characteristics and biological activity of water. The CUSUM graphs demonstrated a greater predictive capacity with regard to changes in the biological adherence process. Additionally, their results do not depend on the characteristics of water. This new tool could be simply and economically implemented regardless of the heat exchanger’s location.
Izvorni jezik
Engleski
Znanstvena područja
Strojarstvo, Tehnologija prometa i transport
Citiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Web of Science Core Collection (WoSCC)
- Science Citation Index Expanded (SCI-EXP)
- SCI-EXP, SSCI i/ili A&HCI
- Scopus
