Quality of air, indoor as well as outdoor, is a major concern now-a-days. Indoor quality is severely affected through release of radioactive as well as chemical emissions from various building materials. One such source is the emission of radon into the indoor air due to high inflow from soil, building materials and natural gas. Similarly, chemical fumes deteriorate the indoor air quality leading to so called sick building syndrome. The efforts are made to provide indices for indoor air quality in a combination of climatic parameters and the emissions.
Facilities are available to quantify the emission in the exhaust of an industry and 1C engines in the transport sector and constant efforts are made to upgrade the technology to check emission from the exhaust. Performance evaluation and upgradation of Electrostatic Precipitator (ESP) in thermal power plants has been undertaken. Design of catalytic converter to the specific needs of given vehicle has been made.
The design and operation of Electrostatic Precipitator (ESP) to collect particulates, in a coal fired power plant depends largely on the properties of coal burned and fly ash generated. The voltage current characteristic and collection efficiencies of ESPs are largely controlled by the electrical resistivity of fly ash generated. There are very few facilities in the world and none in India, where the accurate measurements of resistivity may be made under simulated conditions those exist inside ESP. A fly ash resistivity laboratory has been setup with active collaboration of National Energy Technology Laboratory USA, Southern Research Institute, Alabama USA. USAID – India and NTPC are also actively involved. The fly ash sample preparation and resistivity measurements are made as per IEEE (548-1984) norms. The test procedure captures the change in fly ash resistivity with respect to temperature, moisture chemical composition of fly ash. Once the resistivity and chemical composition of fly ash are known, measures can be taken for the improvement of the performance of the existing ESP /design new ESP.
This facility is open to all costumers around the world. The laboratory also undertakes particle size measurement. The arrangements are made to conduct dust loading tests in power plants and chemical composition of fly ash. Based on the investigations the performance of ESP is evaluated and measures are made to improve the collection efficiency of ESPs thereby reducing the particulate emission levels. Performance evaluation and upgradation of Electrostatic Precipitators [ESP] in thermal power plants has been undertaken. Studies on the treatment/ management of Industrial Wastes and Effluent, Hospital Wastes, Coal Water Slurry generated from Coal Industries are also undertaken.