Cogeneration or combined heat and power ( CHP) is the use of a heat engine Cogeneration and Cogeneration Schematic, www.clarke-energy.com, retrieved 26.11.11 or power station to simultaneously generate electricity and useful heat. Trigeneration or combined cooling, heat and power ( CCHP) refers to the simultaneous generation of electricity and useful heating and cooling from the combustion of a fuel or a solar heat collector. A plant producing electricity, heat and cold is called a trigeneration or poly..
Includes a brief introduction to ray tracing as well as background on advanced topics. A ``User's Manual'' is also included for the ray tracing class library, with code examples for both basic and sophisticated ray tracing problems. Availabl..
the sixties and the seventies
Featuring documents of the period by participants such as Norman Mailer, Allen Ginsberg, H. Rap Brown, Abbie Hoffman, and Robin Morgan, this volume brings together a wide range of material on one of the most turbulent decades..
The best sights and activities. Royal palaces, tribal villages and the magnificent Mekong. Caving , rafting and elephant trekking. Where to stay and what to eat. Bamboo huts and eco-lodges, croissants and fish sauce. A Golden Buddha, a Plain of Jars a..