Energy efficient use

Gasification represents the next most energy efficient use of wood, and is estimated to have a potential to replace about 1% of the total petroleum consumption, since the low energy density of the gas requires site-specific use. 

If a multiple-effect evaporator system produces 10 pounds of fresh water per pound of saturated steam at 35 p.s.i.a. (t = 259° F.) and t0 = 70° F., the work equivalent per 1000 gallons of fresh water is 60 kw.-hr. and the energy efficiency using the differential process with 50% recovery as the standard, is 6.9%. This calculation assumes that the available heat is simply the latent heat of condensation at the constant temperature of 259° F. 

Ishida, M. and Nishida, N., "Evaluation of Coal Conversion Processes from an Energy Efficient Use Viewpoint (II) ... 

FIGURE 18. Maximal energy efficiency using state-of-the-art trubines. 

Winter Hydrogen input Hydrogen input Usable energy efficiency Used energy efficiency Usable energy efficiency Used energy efficiency... 

In nature, biomaterials are made with immaculate resource and energy efficiency using common, readily available substrates through self-assembly into highly organized hierarchies. Functional structures optimized to their environment are produced... 

Capillary filtration can provide for a high product output capacity with the produced filter cake having a very low water content. Disc filters of this type are considered to be energy efficient, using up to 90% less energy than other vacuum filters, because no air passes through the plates. 

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