This paper presents a novel approach for experimentally simulating various environmental conditions and container parameters on air conditioning and refrigeration (AC&R) systems. The proposed emulation technique uses a hardware-in-the-loop (HIL) system to simulate the loading conditions on the evaporator during experimental testing. The evaporator air inlet conditions are controlled with a smal...

Studies were made of the penetration of two polydispersed dioctylphthalate aerosols of different particle size distri bution through 9 mil HV-70 type filter paper with and without pinholes at several different air velocities. It was found, as was expected from elementary considera tions, that the penetrations of the two aerosols of different particle size differed greatly for an intact filter, ...

Abstract Quadrotor UAV obtain the attitude calculation result from inertial measurement unit (IMU), but IMU has problems of high noise and low precision, to solve problems, this paper first introduces extended Kalman filter (EKF) complementary filter, uses them output accelerometer magnetic sensor. The effects two methods are compared by static testing dynamic testing. results show that both fi...

the aim of this study was to evaluate the effect of evaporative media as gas turbine intake air cooling method on pressure drop of cartridge air filters. this study performed under the laboratory condition, using stainless steel test rig with specified dimensions to investigate the role of evaporative media in air cooling as well as its effects on new and used cartridge filters (as representati...

Microbial aerosols are known to be created and disseminated in dental operating rooms (DOR's) in quantities sufficient to raise the possibility of cross infection. The purpose of this study was to evaluate the effectiveness of high efficiency particulate air (HEPA) filters in reducing the concentration of airborne microorganisms. Tests were made in DOR's of 1600-, 1800-, and 3240-ft 3 capacity ...

UNLABELLED Used ventilation filters are a major source of sensory pollutants in air handling systems. The objective of the present study was to evaluate the net effect that different combinations of filters had on perceived air quality after 5 months of continuous filtration of outdoor suburban air. A panel of 32 subjects assessed different sets of used filters and identical sets consisting of ...

We have developed an approach for whole-house gross movement and room transition detection through sensing at only one point in the home. We consider this system to be one member of an important new class of human activity monitoring approaches based on what we call infrastructure mediated sensing, or "home bus snooping." Our solution leverages the existing ductwork infrastructure of central he...

The air filters with high Bacterial Filtration Efficiency (BFE) should help protect people effectively against various air borne particles including bacteria. In general, antibacterial properties of nanofiber membranes are tested by the conventional agar diffusion test where the small piece of test specimen is placed on agar plate and inoculated with test microorganism and incubated. This metho...