This research had been conducted in the forest area around Gunung Sa-lak Geothermal Power Plant of PT. PLN Indonesia Power. diversity data geothermal power plant yet to be fully available. study aimed analyze composition and structure vegetation conservation Salak unit. used a quadrat plot with purposive sampling method. We sampled 873 individuals from 56 families 110 species, consisting native...

At the Kakkonb geothermal area, Japan, a large Quaternary granitic body is dstributed below ca 2.5 km ckpth from the surface, associating with thick high-temperature contact me&amorphic zones in the overlying formations, and a meteoric-water-cbminated type hydrothermal system is developedat present time. During the 'Deep-seated Geothermal Resources Survey', WD-la well was drilled to 3729 m dept...

Geothermal energy has been a subject of great interest since the 1990s in Upper Rhine Graben (URG), where first European Enhanced System (EGS) pilot site developed, Soultz-sous-Forêts (SsF), France. Several studies have already conducted on scales occurring at reinjection side geothermal plants located URG. It observed that composition changes as chemical treatment is applied to inhibit metal s...

The paper presents the idea of replacing fuzzy controllers with interpolative ones in complicated control structures, in order to reduce the complexity of the structure, visible in implementation method and calculus time. There are presented main theoretical and procedural aspects related to design and implementation of interpolative controllers. As a study case an interpolative control structu...

A study has been carried out on the feasibility of using screw expanders, as an alternative to turbines, in three types of binary systems, suitable for recovering power from liquid dominated brines. The maximum power that one machine can generate is of the order of 1-3 MW per unit, depending on the type of system, and the brine and cooling conditions. They are shown to be roughly as efficient a...

in this paper, a new combined power and refrigeration cycle is proposed, which combines the rankin power cycle and the ejector refrigeration cycle. this combined cycle produces both power output and refrigeration output simultaneously. this cycle is driven by the flue gas of gas turbines, industrial waste heats, solar energy and geothermal energy. an exergy analysis is performed to guide the th...

Cuttings from geothermal wells in Dixie Valley, Nevada document the complex history of the Jurassic reservoir rocks now contained within the hanging wall of the Stillwater normal fault. Six stages of postOligocene alteration can be recognized on the basis of mineral paragenesis, rock associations, fluid-inclusion temperatures and apparent salinities. The paragenetic sequence from oldest to youn...

The paper addresses methodological and technological issues of building environmentally friendly efficient energy supply based on geothermal sources. Geothermal potential in the world, accentuating that Russia (areas Baikal natural territory) Mongolia, is analyzed considering possibility its implementation thermal power industry. areas Central Mongolia are characterized by increased heat flows ...

in the sector of electricity production, the existence of investment resources limitation and environmental factors are the main factors that influence this process. the reduction of costs and the destructive impacts of environmental have been always mentioned by specialists. consequently, the drasticality of the environmental protection and the electric-energy production lead to focus on solar...