humidity parameter Articles

The root of all of this is that Nafion membranes must stay hydrated to function properly. If they are not fully humidified the conductivity decreases and therefore more of the electricity is converted directly to heat before it leaves the membrane (I2R heating). If it gets too dry it basically stops functioning as a proton transporter. ...

Jul. 3, 2012

By Fuel Cells Etc

The Xinanjiang model, a conceptual rainfall-runoff (CRR) model with distributed parameters, has been successfully and widely applied to flood forecasting of large basins in humid and semi-humid regions of China. With an increasing demand for timely and accurate forecasts in hydrology, how to obtain more appropriate parameters for CRR models has long been an important topic. These models have a ...

Nov. 27, 2012

By IWA Publishing

The impact of air pollution (CO, NO, NO2, SO2, O3) and meteorological parameters (air temperature, humidity and atmospheric pressure) on three indicators of human morbidity (circulatory, respiratory and skin diseases) is quantified, while the sensitivity of the results to different model specifications is tested. Findings indicate that higher SO2 and CO levels significantly increase circulatory ...

Jan. 12, 2010

By Inderscience Publishers

In recent years, the rapid increase in population density has caused increases in the consumption of fuel, and the outdoor air quality has deteriorated in the crowded urban areas of Turkey. Erzurum, a city in the eastern part of Turkey, is influenced by air pollutants such as SO2 and suspended particles. It is known that, in general, the air pollution concentrations have a close ...

Jan. 26, 2004

By Inderscience Publishers

Accurate estimation and reliable universal performance of reference evapotranspiration (ET0) obtained from a few meteorological parameters are important for the rational planning of agricultural water resources and the effective management of water in irrigated regions. Meteorological data in southern China were used to calculate ET0 using the standard ...

Jun. 3, 2016

By IWA Publishing

Estimation of solar radiation is considered as the most important parameter for the design and development of various solar energy systems. But, the availability of the required data is very scarce and often not readily accessible. The foremost objective of the present study was to estimate the monthly average global solar radiation (GSR) at various locations for Egypt, by the generalised ...

Apr. 1, 2013

By Inderscience Publishers

The composting of biological waste is an important step towards the establishment of closed cycles of matter. A constantly high quality of the compost is, however, of utmost importance for the deliberate re-introduction of compost into the environment. The quality of the compost produced is determined by a very complex biological process during which the organic wastes are converted with the aid ...

Jan. 2, 1999

By ORBIT e.V.

Industrial workplaces are likely to come across one or more hazardous or toxic gases. Combustible gases such as methane are highly dangerous because they can cause large and fatal explosions when ignited. Other problem areas when working in industry are carbon monoxide (which poisons the cardiovascular system), oxygen deficiency, and elevated levels of other gases and pollutants, depending and ...

Sep. 21, 2011

By PPM Technology

The Xinanjiang rainfall–runoff model has been successfully applied in many humid and sub-humid areas in China since 1973. The wide application is due to the simple model structure, the clear physical meaning of the parameters and the well-defined model calibration procedure. However, due to a data scarcity problem and short runoff concentration time, its applications to small drainage basins are ...

Jan. 1, 2012

By IWA Publishing

The effect of weather condition, packaging material and storage duration on some quality parameters of dried tomato slice was investigated. Dried tomato slice samples each weighing 20 g were packaged in small size pouches made from aluminium foil, polypropylene, high density polyethylene and waxed paper. The packaged samples were placed in airtight glass bottles at the relative humidity levels of ...

Apr. 8, 2014

By Inderscience Publishers

In the present study, artificial neural network (ANN) models are developed to predict seven meteorological parameters such as maximum temperature, minimum temperature, relative humidity, wind speed, sunshine hours, dew point and evaporation individually. To predict each of the meteorological parameters, recurrent MISO-ANN network is used. Totally seven ANN models are developed and the development ...

Oct. 24, 2011

By Inderscience Publishers

CAS DataLoggers recently provided a real-time versatile monitoring solution for a museum housing fragile paintings and other artwork which needed to be protected against excessive illumination and ultraviolet light. Both these threats could fade or change the color of paint and dyes, so the building needed to make sure their UV light filters and tinted ...

Sep. 12, 2012

By CAS DATALOGGERS

This study deals with the exergetic analyses of the continuous textile dryers consisting of a stenter and a conveyor belt dryer. The exergy destructions in each of the components of the overall system are determined for average values of experimentally measured parameters. Exergy efficiencies of the system components are calculated to assess their performance. The effects of varying exhaust air ...

May 20, 2009

By Inderscience Publishers

From routinely available observational data, the daytime ventilation conditions in Buenos Aires city have been studied. The climatological behaviour was analysed. The study included the effects of local conditions, such as the coastal location, the urban features and the influence of air humidity on the characteristic parameters of the dispersive capability of the atmosphere. The frequencies of ...

Nov. 19, 2004

By Inderscience Publishers

On 8 November 2011, the Taiwanese Legislative Yuan passed the Indoor Air Quality Management Act making Taiwan the second nation after Korea to implement an indoor air quality management act. For accurate understanding of indoor air quality, it is advised to simultaneously monitor multiple indoor air quality parameters including gases, temperature and humidity. PPM Technology’s range of IAQ ...

Aug. 15, 2012

By PPM Technology

Sonic anemometers have had extensive use in the scientific community. These instruments are used to measure atmospheric parameters that most rotating instruments cannot. Wind speed and wind direction or individual axes of wind velocity are most commonly measured. Along with these measurements, another parameter can be extracted from the sonic anemometer (i.e.), sonic temperature. Since the ...

Sep. 1, 2012

By Applied Technologies, Inc. (ATI)

Environmental radioactivity due to radon and its progenies in the ambient air at the vertical 15 UD Pelletron accelerator facility of the Inter University Accelerator Centre, New Delhi, India was evaluated to calculate the annual effective dose to the workers and users. The radon activity was measured with an active monitor. The activity concentrations of the radon progenies were measured ...

Oct. 12, 2009

By Inderscience Publishers

We present a first order model of airflow within the wood stack of a timber dryer during the constant-rate drying period, allowing the exergy destruction and entropy generation rates to be determined for heat, mass and momentum transfer. The effects of varying timber stack and airflow variables on the entropy generation rate are determined. We find that heat transfer is the dominant contribution ...

Jan. 17, 2007

By Inderscience Publishers

The present work describes the development of a multi–sensor system for the evaluation of aseptic sterilisation processes employing hydrogen peroxide vapour by means of an electronic nose. Microbiological count reduction tests with Bacillus atrophaeus spores have been carried out in order to characterise influencing factors of the sterilisation by hydrogen peroxide vapour, namely the hydrogen ...

Apr. 29, 2013

By Inderscience Publishers

This paper analyses the exergy of air in the building affected by the reference state, considering parameters of temperature and humidity of air. Taking TMY data of 25 typical cities in different building thermal climate zones of China and considering the chemical and physical exergy of air, the exergy of air in the building influenced by the dynamic and static reference state is comparatively ...

Oct. 16, 2014

By Inderscience Publishers