STUDY DESIGN Prospective experimental study. PURPOSE To evaluate bacterial contamination during surgery. OVERVIEW OF LITERATURE The participants of surgery and ventilation system have been known as the most significant sources of contamination. METHODS Two pairs of air culture blood agar plate for G(+) bacteria and MacConkey agar plate for G(-) bacteria were placed at 3 different location...

There is a demand for reduced power consumption in the vapor compression refrigeration cycle. Coefficient of performance of window-air conditioners considerably decreases and power consumption increases under very hot conditions. These problems have encouragecl studies aimed at improving the performance of window-air-conditioners by enhancing the heat transfer rate in the condenser. In this ar...

This paper discusses the results of tests done to investigate performance a thermoelectric air conditioner (TEAC). The TEAC is composed twelve modules (TEMs). TEMs were fixed rectangular fin heat sinks on both their hot and cold sides. With an increased input<em> </em>voltage, cooling capacity increased. At 6 V input voltage flow, suitable condition occurred. rate flow was 0.48 kg/m...

The energy consumption of air conditioning for a telecommunication base station (TBS) in China can be significantly decreased when an air to air thermosyphon heat exchanger is used for free cooling in low atmosphere temperature days. The model for the typical TBS in China was established and the air conditioning energy consumption was analyzed for the cities with climatic data in China. Taking ...

For human-centered automation, this study presents a wireless sensor network using predicted mean vote (PMV) as a thermal comfort index around occupants in buildings. The network automatically controls air conditioning by means of changing temperature settings in air conditioners. Interior devices of air con-ditioners thus do not have to be replaced. An adaptive neurofuzzy inference system and ...