More choices in water system design through hybrid optimisation

2003 ◽  
pp. 268-275
Keyword(s):  
System Design ◽  
Water System

Water-System Design

2020 ◽  
pp. 247-272
Author(s):  
Arnold H. Lobbrecht
Keyword(s):  
System Design ◽  
Water System

scholarly journals Persistence of Legionella in Routinely Disinfected Heater-Cooler Units and Heater Units assessed by Propidium Monoazide qPCR

Pathogens ◽  
2020 ◽  
Vol 9 (11) ◽  
pp. 978
Author(s):  
Savina Ditommaso ◽  
Monica Giacomuzzi ◽  
Gabriele Memoli ◽  
Jacopo Garlasco ◽  
Carla M. Zotti
Keyword(s):  
Pseudomonas Aeruginosa ◽  
System Design ◽  
Water System ◽  
Viable Count ◽  
Surgical Patients ◽  
Total Viable Count ◽  
Propidium Monoazide ◽  
Opportunistic Pathogens ◽  
The Relationship ◽  
Microbiological Surveillance

Background: Evidence to date indicates that heater–cooler units (HCUs) and heater units (HUs) can generate potentially infectious aerosols containing a range of opportunistic pathogens such as Mycobacterium chimaera, other non-tuberculous mycobacterial (NTM) species, Pseudomonas aeruginosa and Legionella spp. Our purpose was to determine the extent of Legionella contamination and total viable count (TVC) in HCUs and HUs and to analyze the relationship by water system design of devices of two different brands (LivaNova vs. Maquet). Methods: Legionella spp. were detected and quantified by our optimized PMA-qPCR protocol; TVCs were assessed according to ISO protocol 6222. Analyses were performed in the first sampling round and after six months of surveillance. Results: Overall, Legionella spp. was detected in 65.7% of devices. In the second sampling round, Legionella positivity rates were significantly lower in water samples from the Maquet devices compared to the LivaNova ones (27.3% vs. 61.5%). LivaNova HCUs also yielded more Legionella, and aquatic bacteria counts than Maquet in both first and second-round samples. Conclusions: We recommend that all surgical patients and staff exposed to aerosols from thermoregulatory devices should be followed up for Legionella infection and that microbiological surveillance on such devices should be conducted regularly as precautionary principle.

Cooling System Design of Ion Nitriding and PCVD Composite Treatment Furnace

2013 ◽  
Vol 448-453 ◽  
pp. 3462-3466
Author(s):  
Z.J. Zuo ◽  
Si Bi ◽  
L.R. Fu ◽  
Z.Q. Weng ◽  
S.H. Peng
Keyword(s):  
System Design ◽  
Cooling System ◽  
Plasma Nitriding ◽  
Water System ◽  
Cooling Water ◽  
Vacuum System ◽  
Vacuum Furnace ◽  
Ion Nitriding ◽  
Precise Calculation ◽  
Nitriding Furnace

Keywords: ion nitriding furnace cooling system vacuum system Abstract. About fuction of vacuum plasma nitriding furnace cooling system, and its design and calculation of main parts, in particular control of water consumption. The cooling water system have been set into the water flowing through the four heat shield, and gradually take the heat, then the coolant out by outlet pipe. Cooling water flows through layers of insulation to varying degrees of cooling, to ensure that each level of temperature, precise calculation of water flow can only be guaranteed to ensure the maximum water savings and cooling the furnace down. This article provide the basis for vacuum furnace cooling system design in the future.

The impact of end-use dynamics on urban water system design criteria

2008 ◽  
Vol 12 (2) ◽  
pp. 161-170 ◽  
Author(s):  
M Thyer ◽  
M Hardy ◽  
P Coombes ◽  
C Patterson
Keyword(s):  
System Design ◽  
Water System ◽  
Design Criteria ◽  
Urban Water ◽  
Urban Water System ◽  
End Use ◽  
The Impact

ITER Tokamak Cooling Water System Design Status

2019 ◽  
Vol 75 (8) ◽  
pp. 841-848 ◽  
Author(s):  
Donato Lioce ◽  
Sergio Orlandi ◽  
Moustafa Moteleb ◽  
Andrea Ciampichetti ◽  
Lionel Afzali ◽  
...  
Keyword(s):  
System Design ◽  
Water System ◽  
Cooling Water ◽  
Cooling Water System
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