Thermodynamics analysis for forced air pre‐cooling of cherry

2021 ◽  
Author(s):  
Fang Liu ◽  
Binguang Jia ◽  
Zichun Li ◽  
Xiao Zhang
Keyword(s):  
Thermodynamics Analysis ◽  
Forced Air

266. Use of Portable Forced Air Machines With HEPA Filtration to Create a Mass Casualty Respiratory Isolation Area

2004 ◽  
Author(s):  
J. Benyo ◽  
R. Rosenbaum ◽  
D. Williams ◽  
B. Humphrey ◽  
B. Passarello ◽  
...  
Keyword(s):  
Mass Casualty ◽  
Forced Air

The Effect of Regulating Elements on Convective Heat Transfer along Shaped Heat Exchange Surfaces

2013 ◽  
Vol 34 (1) ◽  
pp. 5-16 ◽  
Author(s):  
Jozef Cernecky ◽  
Jan Koniar ◽  
Zuzana Brodnianska
Keyword(s):  
Heat Transfer ◽  
Heat Exchange ◽  
Cfd Simulation ◽  
Local Heat Transfer ◽  
Local Heat ◽  
Temperature Fields ◽  
Transfer Coefficients ◽  
Heat Transfer Intensification ◽  
Heat Transfer Coefficients ◽  
Forced Air

Abstract The paper deals with a study of the effect of regulating elements on local values of heat transfer coefficients along shaped heat exchange surfaces with forced air convection. The use of combined methods of heat transfer intensification, i.e. a combination of regulating elements with appropriately shaped heat exchange areas seems to be highly effective. The study focused on the analysis of local values of heat transfer coefficients in indicated cuts, in distances expressed as a ratio x/s for 0; 0.33; 0.66 and 1. As can be seen from our findings, in given conditions the regulating elements can increase the values of local heat transfer coefficients along shaped heat exchange surfaces. An optical method of holographic interferometry was used for the experimental research into temperature fields in the vicinity of heat exchange surfaces. The obtained values correspond very well with those of local heat transfer coefficients αx, recorded in a CFD simulation.

The influence of a high forced air stream simulating fan on the results of exercise tests at horses on the treadmill

1991 ◽  
Vol 7 (6) ◽  
pp. 347-354 ◽  
Author(s):  
I Boos ◽  
K A von Plocki ◽  
M Hermann ◽  
H D Lauk
Keyword(s):  
Exercise Tests ◽  
Air Stream ◽  
Forced Air

scholarly journals Optimal Application of Forced Air Warming to Prevent Peri-Operative Hypothermia during Abdominal Surgery: A Systematic Review and Meta-Analysis

2021 ◽  
Vol 18 (5) ◽  
pp. 2517
Author(s):  
Yoonyoung Lee ◽  
Kisook Kim
Keyword(s):  
Systematic Review ◽  
Abdominal Surgery ◽  
Critical Appraisal ◽  
Meta Analysis ◽  
Upper Body ◽  
Cochrane Library ◽  
Randomized Controlled ◽  
Forced Air Warming ◽  
Forced Air ◽  
Full Body

Patients who undergo abdominal surgery under general anesthesia develop hypothermia in 80–90% of the cases within an hour after induction of anesthesia. Side effects include shivering, bleeding, and infection at the surgical site. However, the surgical team applies forced air warming to prevent peri-operative hypothermia, but these methods are insufficient. This study aimed to confirm the optimal application method of forced air warming (FAW) intervention for the prevention of peri-operative hypothermia during abdominal surgery. A systematic review and meta-analysis were conducted to provide a synthesized and critical appraisal of the studies included. We used PubMed, EMBASE, CINAHL, and Cochrane Library CENTRAL to systematically search for randomized controlled trials published through March 2020. Twelve studies were systematically reviewed for FAW intervention. FAW intervention effectively prevented peri-operative hypothermia among patients undergoing both open abdominal and laparoscopic surgery. Statistically significant effect size could not be confirmed in cases of only pre- or peri-operative application. The upper body was the primary application area, rather than the lower or full body. These findings could contribute detailed standards and criteria that can be effectively applied in the clinical field performing abdominal surgery.

scholarly journals Air circulation in a gastrointestinal light source box and endoscope in the era of SARS-CoV-2 and airborne transmission of microorganisms

2021 ◽  
Vol 09 (03) ◽  
pp. E482-E486
Author(s):  
Stanislas Chaussade ◽  
Einas Abou Ali ◽  
Rachel Hallit ◽  
Arthur Belle ◽  
Maximilien Barret ◽  
...  
Keyword(s):  
Light Source ◽  
Cooling System ◽  
Air Cooling ◽  
Airborne Transmission ◽  
Plastic Tube ◽  
Care Workers ◽  
Air Cooling System ◽  
Forced Air ◽  
Air Circulation ◽  
Closed Environment

Abstract Background and study aims The role that air circulation through a gastrointestinal endoscopy system plays in airborne transmission of microorganisms has never been investigated. The aim of this study was to explore the potential risk of transmission and potential improvements in the system. Methods We investigated and described air circulation into gastrointestinal endoscopes from Fujifilm, Olympus, and Pentax. Results The light source box contains a lamp, either Xenon or LED. The temperature of the light is high and is regulated by a forced-air cooling system to maintain a stable temperature in the middle of the box. The air used by the forced-air cooling system is sucked from the closed environment of the patient through an aeration port, located close to the light source and evacuated out of the box by one or two ventilators. No filter exists to avoid dispersion of particles outside the processor box. The light source box also contains an insufflation air pump. The air is sucked from the light source box through one or two holes in the air pump and pushed from the air pump into the air pipe of the endoscope through a plastic tube. Because the air pump does not have a dedicated HEPA filter, transmission of microorganisms cannot be excluded. Conclusions Changes are necessary to prevent airborne transmission. Exclusive use of an external CO2 pump and wrapping the endoscope platform with a plastic film will limit scatter of microorganisms. In the era of pandemic virus with airborne transmission, improvements in gastrointestinal ventilation systems are necessary to avoid contamination of patients and health care workers.

Natural and forced air convection operation in a direct solar dryer assisted by photovoltaic module for drying of green onion

Solar Energy ◽  
2021 ◽  
Vol 220 ◽  
pp. 24-34
Author(s):  
Letícia Ferraresi Hidalgo ◽  
Mariana Nascimento Candido ◽  
Karina Nishioka ◽  
José Teixeira Freire ◽  
Gustavo Nakamura Alves Vieira
Keyword(s):  
Photovoltaic Module ◽  
Air Convection ◽  
Solar Dryer ◽  
Forced Air
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