05.07.2009
A plant designed to produce both heat and electricity from a single heat source. It is an efficient way to generate electricity and heat simultaneously
A combined cycle electric power plant includes gas and steam turbines and steam generators. It is a method of generating electricity with increased efficiency by using residual heat for additional electricity production. The combined cycle gas turbines (“CCGT”) improve burn utilization rates considerably. This technology exploits the residual heat emitted from the industrial gas turbines to run an additional (steam) turbine, with no extra fuel. Instead of emitting the gases to the air, its heat is exploited for further re-use
Most of the units in Israel are constructed in two stages:first a gas turbine and then a steam addition. On December 31, 2009 the Company had 8 combined cycle gas turbine generating units, 1 at Ramat Hovav, 3 at Hagit, 2 at Gezer, 1 at Alon Tavor and 1 at Eshkol, four of which at this stage use diesel (natural gas in future), and four burn natural gas (Eshkol, Gezer and Hagit. The total installed generating capacity of the eight combined cycle units is 2,848 megawatts. In addition, one industrial gas turbine (Tsafit) which, in future, will receive steam driven addition, will operate in the combined cycle format. The total installed generating capacity of this gas turbine is 248 megawatts
A large percentage of the fuel used in the generation of electricity is wasted in the form of discarded heat. Combined heat and power systems produce electricity or mechanical power and capture recoverable heat for process use
A utility which provides both gas and electric service
Rock detritus and soil accumulated at the foot of a slope
Illegal agreement among a few large firms in an industry to set price or restrict output.
In 1861 Thomas Graham coined the term colloid to describe pseudosolution. It is in fact a type of mechanical mixture where one substance is dispersed evenly throughout another. Because of this dispersal, some colloids have the appearance of solutions. A colloidal system consists of two separate phases: a dispersed phase (or internal phase) and a continuous phase (or dispersion medium). A colloidal system may be solid, liquid, or gaseous.