As a result of isolating doors and windows very well to reduce heating energy costs, some environments' air change rate becomes zero. Two different systems (radiator floor systems) widely used in residential applications were compared for room where the is zero, using numerical methods terms particle concentrations. 3D dimensional CFD simulations show that system performs better removing pollut...

In many industrial processes, heat exchangers play the important role of the cooling function. The effective heat transfer rate in a specific process strongly depends on the heat exchanger design. The most popular type of heat exchangers commonly used in the automotive industry, is called "radiator". In engines, radiators play the important role of the cooling process. The present study is de...

At the University of Twente, a 14.5 K hydrogen-based sorption cooler is under development. It can be used as a stand-alone 14.5 K cooler, or as a precooler, e.g., in combination with a 4 K heliumbased sorption cooler. The advantage of sorption coolers is the absence of moving parts and, as a result, their vibration-free operation and, potentially, a very long life. A 4.5 K helium-based sorption...

A feasibility study is presented exploring the possibility of using thermoelectric devices for thermal control CubeSat on-board electronics. simple architecture devised and an empirical model how such a system would perform constructed, performance data commercially available module. This used to calculate temperature which could cool computer chip, as function resistance heat rejection. As bas...

Deep core temperature is the most basic and important information about health conditions. The non-contact infrared thermometer widely used to measure of human body. However, cannot deep temperature. To overcome this limitation, measuring with a microwave radiometer gaining attention. In study, we propose dual-band on-body near-field antenna for application. proposed has compact size 20 mm &#x0...

this paper proposes a new smart antenna beamforming scheme based on electronically steerable parasitic array radiator (espar). the proposed method is capable of providing better capacity compared to the conventional espar. the termination of each antenna element in this structure comprises a pin diode in addition to a varactor. using pin diode besides the varactor provides more degrees of freed...