Abstract We report about a new third-party observation, namely, wind measurements derived from hot-air balloon (HAB) tracks. first compare the HAB winds with meteorological tower and radio acoustic profiler, both situated at topographically flat observatory near Cabauw, Netherlands. To explore potential of this type observation in other topographies, we present an intriguing flight Austria spec...

This paper suggests a heat recovery concept that is based on preheating/precooling the cold/hot fresh outside air by means of relatively hot/cold exhaust in winter/summer weather conditions. To investigate feasibility such concept, an experimental setup established to simulate conditions similar All-Air HVAC system. The prototype consists 6.7-m3 air-conditioned chamber split unit 5.3-kW capacit...

In internal combustion engines, exhaust valve and its seat gain considerable temperature as the hot gases exit through them. So, the rate of heat transfer should be under control. In this study, the contact heat transfer coefficient has been estimated. An experimental study on an Air-Cooled internal combustion engine cylinder head has been considered. Using the measured temperatures of sensors ...