The Evolving Demand for Negative Pressure Isolation Facilities during COVID 19: Trial of the Negative Pressure Isolation Tent

With COVID 19, more than ever before, healthcare institutions are realizing the need to develop, implement, assess, review and revise their infection control policies and guidelines of practice. In many facilities, patients who are known to be or suspected to be infectious are physically isolated from other patients and people. This is the rightful and ethical thing to do. These patients are usually identified through surveillance or using clinical and/ or microbiological criteria. Whilst practices such as personal and hand hygiene, safe infection control practices, distancing and others are useful, the use of formal isolation in hospitals represent an important step. This is also essential to reduce spread to healthcare workers. In this paper, we describe a Negative Pressure Full Isolation Tent (NPFIT) which we tried out via simulation and the conduct of a simple smoke test to understand more on the concept of negative pressure and what it entails. It is our hope that readers will get a better understanding of this concept, through our simplified demonstration and trial.

Performance verification and enhancement of mechanical smoke exhaust system in full-scale hot smoke test for a large space

Full-scale hot smoke test standards have been issued in a number of countries, but the common method of judgment is a visual determination. As Marine Museum K has used a performance-based fire safety design and a numerical simulation during its design stage, this study employs instruments to measure and obtain quantitative comparisons, while enhancing the performance of the smoke exhaust system in different vent-opening modes. The results prove that the measured performance is consistent with the simulation results. The existing model observed that light attenuation is slight at less than 2%, 6% and 10% on the third, fifth and seventh floors, respectively. The effects of the open state of the front and rear vents on the first floor and the vent on the third floor are also discussed. The open mode of the upper and lower vents in Case 2 created a better performance than the other cases due to the excellent flow pattern. In Cases 3 and 4, the fire plumes were significantly disturbed by makeup-air through the vents on the lower floor after all fans were actuated, and the smoke diffused everywhere in the lower floors. This paper also found the disadvantages caused by the makeup air.

Smart Management System using RFID to Control Traffic & Vehical Parking

In India Traffic issues are multiplied each year because of increment in populace. This paper relies upon traffic and stopping the executives frameworks utilizing RFID innovation. RFID is put in vehicle and full database of vehicle and proprietor subtleties is put away. RFID peruser is set in all the traffic signals, Toll Gates and Parking regions, in view of the got information the traffic signal, toll expense and stopping space is overseen. In the event that any petty criminal offense like inappropriate protection, smoke test status or vehicle robbery is distinguished, the update sheet is made.

Experimental Study on the Characteristics of Fire Smoke Movement in Ultra Thin and Tall Atriums by Hot Smoke Test

The characteristics of smoke natural filling in ultra thin and tall atriums were investigated by hot smoke test method. For the fire located on the atrium ground, the smoke touched the side wall first and then extended both upwards and downwards. The smoke plume rising velocity variation can be divided into four stages, different from the normal law in large spaces. In the very early stage of natural filling, the smoke concentration near the height of wall touching point was highest and maintained at a high level in the whole process. The linear trend of temperature increasing in plume center above the height of touching point was broken, far less than the theoretical predictions, which verified the enhancement effect of boundary heat exchange caused by plume restriction. The variation tendencies of smoke density and temperature were similar during the hot smoke test,and there existed a good linear relation between these two parameters. The height-width ratio was calculated as 3.2 averagely by the test results when smoke plume would likely touch atrium walls, and it was very close to the theoretically derived value. This ratio can be used as the definition condition for ultra thin and tall atriums.