Abstract The Regional Cabin Demonstrator is developed within the Clean Sky 2 project and integrates latest developments in sustainable high-performance cabin interiors for enhanced passenger experience. Within this project, an innovative low pressure environmental control system (ECS) ducting integrated into demonstrator. Together with these hardware demonstration efforts, associated model base...

drying is one of the most important steps in raisin processing. during this step, initial moisture content decreases up to 15-17% (db) for suitable storage. achieving optimum drying conditions can affect the processing time and improve raisin quality. temperature, air velocity and pretreatment are important factors in the quality of the grape drying process. in this research, the effect of temp...

Ensuring comfortable climatic conditions for operators in the cabin of technological machines is an important scientific and technical task affecting operator health. This article implements numerical analytical modeling thermal state vehicle cabin, considering external airflow internal ventilation. A method calculating heat transfer coefficients a multilayer wall air under forced convective ex...

ZnS/glass Thinlayer in high vacuum condition and $40$ degree‎ ‎Deposition angle has been produced by resistance evaporated method ‎with $28$ nm thickness‎. ‎cabin deposition temperature ZnS layer was‎ ‎about $50C$ and substrates were kept at room temperature‎. ‎The Atomic ‎Force Microscopy (AFM) and XRD analyses are perfectly accomplished‎ ‎for this layer.‎‎‎

Partial body cryotherapy cabins most often use liquid nitrogen as their cryogenic fluid, which raises safety concerns during operation. In this study, an innovative cabin design is presented, featuring electric cooling system suitable for producing cold air at −30 °C. The geometry of the designed evaluated by a thermodynamic modeling aims optimizing circulation flows inside cabin. numerical stu...

Air analysis inside vehicles is a problem that can be interpreted from several perspectives. This research is oriented towards the perception of air quality within a car, regarding a situation of cars in stationary traffic. Carbon dioxide measurements were made using a Trotec Data Logger Air Quality CO2 BZ30 machine inside different standing vehicles with up to five occupants, with and without ...

Emission systems and devices are required on automobile engines to reduce air pollution problems. Catalytic converters have been used on most 1975 and newer automobiles to reduce hydrocarbon and carbon monoxide (CO) emissions to a value that meets the Environmental Protection Agency requirements established for 1975 and 1976. The 1980-1981 Boise, Idaho, study shows that with a functioning catal...

introduction recent studies of public underground parking lots showed the influence of radon concentration and the probable discomfort caused by parking cars. materials and methods radon concentration was measured in semi-closed public parking lots in the six governorates of kuwait, using durridge rad7radon detector (usa). results the peak radon concentration in the parking lots of kuwait gover...

At present, the prediction of shipboard cabin noise is mainly obtained by simulation calculation using FEM, BEM or SEA. These methods are not convenient for rapid engineering prediction. By making a test platform prediction, we make an experimental study simplified approach based on Source-Path-Receiver system approach. The shows that this feasible and valid when applied to predict air borne le...

air conditioning refrigerant r134a has value of global warming potential (gwp) 1300, which is much higher than mac directive (gwp below 150) passed in july 2006. this prompted a search for alternative refrigerant with gwp value less than 150. r1234yf is a new refrigerant which has lower gwp value of 4. effect of blower speed has been compared and flammability issue of r1234yf has been addressed...