for determination of so2 concentration and its variation due to time and location within tehran air-shed area, department of environmental health, school of public health installed two units of semiautomatic air sampler, in tehran university campus and ghazvin-square area. collected samples were analyzed according to hydrogen peroxide method and for each month arithmetic mean was calculated. th...

polycyclic aromatic hydrocarbons (pahs) which are toxic pollutants are released by various sources of urban combustion. ahvaz in iran with around a million population and the industrial and oil centers, has encountered air quality problems. samples of dibenzo (a,h) antheracen were collected from six stations in ahvaz particle and gas phase in summer 2010. dibenzo(a,h) antheracen were collected ...

The current review focuses on the utilization of heavy fuel in operating gas turbine and their effect power plant performance. literature survey includes a comparison different studies to reveal property combustion efficiency consumption. most important which is generation electric by fuels stations that use turbines. Gas becoming increasingly widespread other branches industry. It known therma...

a hybrid hydro/wind/photovoltaic base on hydrogen storage system is designed to supply power demand of pump stations. the aim of this design is minimization of net present cost of the hybrid system. optimization problem is subject to reliable supply of the demand. the system is investigated in the north west of iran (meshkinshahr) and the local data is applied. about 12 pump stations are found ...

In the development of technologies, over time, industry has adopted new paradigms, IOT is not exception, and thanks to electronic components, we can find sensors actuators with ability measure multiple physical parameters. , mechanics, among others, in this work a methodology developed be able evaluate operation most well-known power generators such as generation sub stations, mechanism present...

weather and climate have considerable influence on the concentration of air pollutants such as particles and gases. the range and concentration of these particles and gases are very dependent on prevailing weather conditions and air currents. this research concentrates on health effects of benzene, one of the air pollutants of tehran, as a major city. the concentration of benzene emission to ai...

As of the time of the project appraisal, the National Power Corporation (NPC) had given priority to the construction of a power station in order to ameliorate a serious shortage in electricity. The construction of power stations had resulted in some improvement of the gap between supply and demand, but pollution had become a serious problem, since action had not been taken to address the enviro...