Thermodynamic and thermoeconomic analysis of a 21 MW binary type air-cooled geothermal power plant and determination of the effect of ambient temperature variation on the plant performance

2019 ◽  
Vol 192 ◽  
pp. 308-320 ◽  
Author(s):  
Murat Kahraman ◽  
Ali Bahadır Olcay ◽  
Esra Sorgüven
Keyword(s):  
Power Plant ◽  
Ambient Temperature ◽  
Temperature Variation ◽  
Plant Performance ◽  
Geothermal Power Plant ◽  
Geothermal Power

Improving the Performance of an Existing Air-Cooled Binary Geothermal Power Plant: A Case Study

1999 ◽  
Vol 121 (3) ◽  
pp. 196-202 ◽  
Author(s):  
M. Kanog˘lu ◽  
Y. A. C¸engel
Keyword(s):  
Power Plant ◽  
Power Output ◽  
Plant Performance ◽  
Working Fluid ◽  
Maximum Pressure ◽  
Geothermal Power Plant ◽  
Northern Nevada ◽  
Binary Geothermal Power Plant ◽  
Geothermal Power ◽  
Cooling Air

An existing air-cooled binary geothermal power plant in northern Nevada is studied. The current performance of the plant is analyzed with an emphasis on the effects of seasonal climate changes. Two potential sites have been identified to improve the performance of the plant. Northern Nevada has a dry climate, particularly in hot summer months, and the temperature of cooling air can be decreased considerably by evaporative cooling. When the air temperature is decreased to the wet-bulb temperature, the decrease in the condenser temperature is determined to increase the power output by up to 29 percent. The required amount of water for this case is calculated to be about 200,000 tons per yr. Several parametric studies are performed by simulating the operation of the plant with an equation solver with built-in thermophysical property functions. It is determined that the net power output of the plant can be increased by 2.8 percent by optimizing the maximum pressure in the cycle. Also, replacing the existing working fluid isobutane by other commonly used binary fluids such as butane, R-114, isopentane, and pentane do not produce as much of an improvement in the plant performance as operating with isobutane at the optimum maximum pressure. Therefore, isobutane appears to be the best choice for this power plant.

scholarly journals ASSESSMENT OF THE PROSPECTS FOR THE CONSTRUCTION OF A GEOTHERMAL POWER PLANT ON THE TERRITORY OF THE ACTIVE AVACHINSKY VOLCANO OF THE KAMCHATKA TERRITORY

2021 ◽  
pp. 83-86
Author(s):  
PALINA PAVLOVNA PROTSENKO ◽  
◽  
ANTON ANDREEVICH VEKLICH ◽  
Keyword(s):  
Power Plant ◽  
Economic Analysis ◽  
Power Plants ◽  
Efficient Operation ◽  
Geothermal Power Plant ◽  
Advantages And Disadvantages ◽  
Exact Location ◽  
Promising Area ◽  
Geothermal Power

This article discusses the design of a geothermal power plant on the promising area of the active Avachinsky volcano, the advantages and disadvantages of its operation, as well as the determination of the exact location of the power plant for efficient operation based on geophysical studies and a comparative economic analysis with the existing traditional power plants of the Kamchatka territory.

scholarly journals LCA and Exergo-Environmental Evaluation of a Combined Heat and Power Double-Flash Geothermal Power Plant

2021 ◽  
Vol 13 (4) ◽  
pp. 1935
Author(s):  
Vitantonio Colucci ◽  
Giampaolo Manfrida ◽  
Barbara Mendecka ◽  
Lorenzo Talluri ◽  
Claudio Zuffi
Keyword(s):  
Life Cycle ◽  
Power Plant ◽  
Environmental Analysis ◽  
Combined Heat And Power ◽  
Hot Water ◽  
Environmental Cost ◽  
Published Data ◽  
Geothermal Power Plant ◽  
Geothermal Power ◽  
Double Flash

This study deals with the life cycle assessment (LCA) and an exergo-environmental analysis (EEvA) of the geothermal Power Plant of Hellisheiði (Iceland), a combined heat and power double flash plant, with an installed power of 303.3 MW for electricity and 133 MW for hot water. LCA approach is used to evaluate and analyse the environmental performance at the power plant global level. A more in-depth study is developed, at the power plant components level, through EEvA. The analysis employs existing published data with a realignment of the inventory to the latest data resource and compares the life cycle impacts of three methods (ILCD 2011 Midpoint, ReCiPe 2016 Midpoint-Endpoint, and CML-IA Baseline) for two different scenarios. In scenario 1, any emission abatement system is considered. In scenario 2, re-injection of CO2 and H2S is accounted for. The analysis identifies some major hot spots for the environmental power plant impacts, like acidification, particulate matter formation, ecosystem, and human toxicity, mainly caused by some specific sources. Finally, an exergo-environmental analysis allows indicating the wells as significant contributors of the environmental impact rate associated with the construction, Operation & Maintenance, and end of life stages and the HP condenser as the component with the highest environmental cost rate.

Sign in / Sign up

Export Citation Format

Share Document