ABSTRACT
As it was concluded by International Energy Agency (IEA, 2008), in 2005, manufacturing industry was globally consuming the most energy, with 33% share, followed by households (29%) and transport (26%). Its carbon dioxide emissions share was also biggest, constituting 38%. From 10% to 50% of this energy is lost with waste heat to the environment. About 60% of this energy is going as low-grade heat. The typical sources of low-temperature heat are presented in Table 2.1.
