Wednesday, September 24, 2014

Satellite TV Technology For The Future

Internet TV, in short, is video and audio data sent over an Internet connection. It is also called Internet protocol television, or IPTV. Broadcasting rights to Internet TV differ from country to country. These rights are implemented to govern the allotment of copyrighted content and media.

 Internet TV broadcasting is almost similar to watching television via an antenna or a series of cable wires, the difference being that information is delivered over the Internet as data. The advantage that Internet TV has over cable TV is that it has much more variety, along with many of the similar shows you find on the established networks, most Web sites provide autonomously produced shows targeted at people with specific interests.

 Internet TV is still a relatively new phenomena, and quality, matter and expenses can greatly vary. Shows are of very good quality and professionally produced material. Although the only drawback seems to be the difference in video quality and the varying screen size, right now Internet TV, broadcasting offers a few more benefits than traditional television does. You can watch two basic types of broadcasts through Internet TV:

 Live broadcasts

 Web sites like wwiTV assemble lists of live broadcast channels. These channels are generally grouped based on country and browse through the list of available broadcasts. Some TV networks also play live, streaming feeds of their programming on their official sites.

 On demand videos

 On-demand videos are arranged like a playlist. Episodes or clips of a show are organized by title or channel or in categories like news, sports, or music videos. You get to choose whatever you want to watch and when you want to watch it. The USP for most of these sites is that viewers can watch all their favourite programs courtesy video streaming, a technology that permits you to watch an audiovisual clip online.
 The Ku band satellite system (Kurtz-under band) is mainly used for satellite communications, predominantly for editing and broadcasting satellite television. This band is separated into several sections based on geographical regions, as established by the ITU (International Telecommunication Union). The Ku band is a segment of the electromagnetic band in the microwave spectrum of frequencies ranging from 11.7 to 12.7GHz. The most frequently used Ku band digital reception format is DVB or the full-blown Digicipher II 4DTV format. The first commercial television network to comprehensively make use of the Ku Band satellite system for most of its associate feeds was NBC, back in 1983.

 HotBird Transponder is the name of an established family of satellites controlled by Eutelsat, located at 13E over the Equator and with transmitting imprints over Europe, North Africa, and the Middle East.

 Hotbird Transponder hosts 13 finest platforms, over 500 pay-TV channels, over 500 free-to-air channels and almost 30 HDTV channels. Besides broadcasting television services, the system offers over 500 radio stations, and multimedia services, over the same extensive coverage region.

Tuesday, September 2, 2014

Pyrolysis Is A Hot Technology Of The Future

Pyrolysis could in future be useful to reduce landfills because it can be used to mine waste and burn it for energy, reducing the waste in landfills and reverse the rapid expansion of real estate being used to store garbage.

 However, it is also unfortunately an expensive process to implement nowadays and for many cities is too expensive to take advantage of. Nevertheless, hyrolysis has progressed significantly in the processing of herbaceous materials as well as woody plants. In fast pyrolysis, the widely used fluid bed reactor is a relatively simple design with favorable heat transfer characteristics.

 Pyrolysis rates for siloxane fluids are very sensitive to trace catalysts. Measurements of the global heat of gasification for ultra-clean polymers resulted in significantly higher values (3000 kJ/kg). Pyrolysis, often incorporating gasification, is a thermal process where organic materials in the waste are broken down under pressure and in the absence of oxygen. The process works best when the input waste is carbon-rich, preferably sorted or pre-sorted.

 Pyrolysis can be used as a means of reducing scrap tires disposal problems. In this context it is defined as the degradation of the rubber of the tire using heat in the absence of oxygen.
 Surprisingly some people are reporting on the web that they have chosen some unusual fuels for their pyrolysis experiments and they appear to be paying off. Pyrolysis of used frying oils, for example, seems to be one option for this attractive alternative as described in a recent US study. Until 2002, 80% of waste edible oils were discharge in sewers and only 20% were upgraded into high value chemicals or biofuel. Now the situation could be rapidly improved with less oil going to sewer if this technology becomes established..

 Pyrolysis of biomass can be achieved by pyrolysis as well as by gasification. Such biomass is the main source of energy for a large number of small, rural, and cottage industries along with the majority of rural households. The majority of these enterprises belong to an unstructured sector and hence information and data on these industries are scarce.

 Biomass also offers major environmental benefits. Initial applications will be with biomass residues generated in agro- and forest-product industries. Biomass fuels generally contain high levels of corrosive ash.

 Pyrolysis technology as with gasification is becoming much more popular due to rising costs for landfilling. Costs are soaring for landfill, from current rates of about $25 per ton, and many are projecting that costs could soon rise to the $75 to $100 per ton range. Costs of the pyrolysis process will include the utilities, hydrogen feedstock, depletion of the catalyst, and in some situations, a reduction in the cracker operating rates in order to regenerate the catalyst.

 Pyrolysis is the thermal decomposition of biomass occurring in the absence of oxygen. It is the fundamental chemical reaction that is the precursor of both the combustion and gasification processes and occurs naturally in the first two seconds. Pyrolysis is known for low emissions to the environment.

 Pyrolysis is a process for thermal conversion of solid fuels in the complete absence of oxidizing agent (air/oxygen), or with such limited supply that gasification does not occur to any appreciable extent. Commercial applications are either focused on the production of charcoal or production of a liquid product, the bio-oil.

 Pyrolysis consists in most process of applying high heat to organic matter (ligno-cellulosic materials) in the absence of air or in reduced air. The process can produce charcoal, condensable organic liquids (pyrolytic fuel oil), non-condensable gasses, acetic acid, acetone, and methanol.

 Pyrolysis is considered to be one of the more feasible solutions that may be economically profitable at large scale and minimise mans impact on nature. The interest we hold in this process is centred on the fact that the products obtained by this process may be easily handled, stored and transported and they may be transformed in other units that are not near the recycling one.