ansi/ashrae 110-95 protocol is a widely acceptable method to assess the performance of laboratory hoods. in this test, sulfur hexafluoride (sf6) is applied as a tracer gas to quantitatively evaluate the performance of laboratory hoods. the environmentally hostile characteristics of sf6 as well as its cost are the major concerns. in the present study, the substitution of ethylene with sf6 in the...

background and objective : a considerable amount of sulfur hexafluoride is applied to evaluate the performance of each laboratory hood according to ashrae–110-95 method. sf 6 is extremely hostile to environment and expensive. in present work, the possibility of conducting this method of hood performance test with less volume of sf 6 was investigated. material and methods : the performance of a ...

ANSI/ASHRAE Standard 110 provides a quantitative method for testing the performance of laboratory fume hoods. Through release of a known quantity (4.0 Lpm) of a tracer gas, and subsequent monitoring of the tracer gas concentration in the "breathing zone" of a mannequin positioned in front of the hood, this method allows for evaluation of laboratory hood performance. Standard 110 specifies sulfu...

Opportunities for energy efficiency a re often investigated for the buildings of a campus, without afocus on the central plants serving the multi-buildine C£llI1pUS, Quite ojten, a majority of the energy efficiencr opportunities ore present ill the central plants, ln such pia 11ts, ret rofi II ing the central plants with tuore efficient equipment or changing operating strategies can have a sign...

In hot arid climates, air conditioning in the summer dominates energy use buildings. Kuwait, demand buildings is dominated by cooling, which also determines national peak electricity demand. Schools contribute significantly to cooling demand, but suffer from poor ventilation. This paper presents analysis of a ventilation and system for school classrooms using wind catcher natural evaporative co...