For such sampling situations, it is suggested that the radius of the breathing zone is reduced to 10 cm, which may be achieved by a head-mounted sampler. The solution is shared using an open source methodology. 403.2.1 Breathing Zone Outdoor Airflow A zone floor area: the net occupiable floor area of the ventilation zone, square feet (m2). The basic concept of a breathing zone consisting of a hemisphere of radius 25-30 cm is therefore not well suited for workers handling a point source emitting large particles. The customizable clip system opens new possibilities for occupational health professionals since the basic design can be altered to hold different kinds of samplers and tools. This study presents an innovative custom-designed clip system that can aid in attaching different tools for personal exposure measurement to a worker’s harness without hindering the operation of the worker. the effect of motion and unsteady breathing on the velocity field associated with the human thermal plume. The design cost and functionalities of the clip system were compared to commercial systems. Despite the increasing awareness concerning the deterioration of the child breathing zone due to poor indoor air quality in the scientific community, there is. Velocity, Breathing zone, Indoor environment. The designs were also tested three times in field conditions. P z outdoor airflow rate required per unit area as determined from. R p zone floor area: the net occupiable floor area of the ventilation zone sq ft or sq m.

The table is utilized to calucalte the Breathing Zone Outdoor Airflow Vbz which is explained as design outdoor airlfow required in the breathing zone of the occupiable space or spaces in a zone, i.e, the breathing zone outdoor airflow in Section 6.2.2.1. The clip system was tested for mechanical stress test to establish a minimum lifetime of 5000 openings, a cleaning test, and a supply chain test. The breathing zone outdoor airflow (Vbz), is determined using Equation 6-1 from ASHRAE Standard 62.1. air quantity requirements within a 'Breathing Zone'. The concept was first tested with a simple clip design, and when it was found to be functional, the ability of the innovative and open source design to be extended to other applications was demonstrated by designing another tooling system. A novel and parametric 3D printable clip system was designed with an open source Computer-aided design (CAD) system and was additively manufactured. The plane and volume averaged particle number concentrations in the breathing zone and vicinity of the thermal manikin were evaluated and the results were compared with the experimental data. Design for additive manufacturing is adopted to help solve problems inherent to attaching active personal sampler systems to workers for monitoring their breathing zone.