GEOTHERMAL POWER CYCLE USING EAHE (EARTH AIR HEAT EXCHANGER)

TECHNICAL FIELD

[0001]The invention relates to the geothermal power cycle developed for binary-based geothermal power plants generating electrical energy from geothermal energy, which is obtained by means of EAHE (earth air heat exchanger) and increases the amount of electrical energy produced by lowering the temperature of the air used in the cooling tower, especially in summer.

[0002]In particular, unlike existing geothermal power conversion systems, the invention relates to improving the performance of geothermal power cycles is which reduce energy inefficiencies by supplying the needed colder air by connecting the air taken from the external environment directly to the cooling tower through EAHE and which can also be adapted to improve the performance of air-cooled cooling towers used in industrial plants such as thermal power plants, iron and steel and paper plants with high energy consumption, especially geothermal power plants.

STATE OF THE ART

[0003]In existing geothermal power cycles, outdoor air is used as a coolant. This situation prevents sufficient cooling with the increase in outdoor temperatures. Accordingly, the efficiency of geothermal power cycles decreases, causing electrical energy to be generated far below the installed capacity of the plant. The decrease in these energy generation amounts due to the increase in outdoor temperature in existing geothermal power plants directly affects the profitability of the plant. In fact, when the lifetime analysis of the plants is examined, the payback periods increase. During the summer months, it may even be possible to not operate the plants. In this way, there is a need for additional cooling loads and it is not possible to exceed a certain power level with the current technological cycle.

[0004]As a result, the need for the geothermal power cycle using EAHE, which eliminates the disadvantages of the state of the art, and the insufficiency of the existing solutions have necessitated a development in the relevant technical field.

BRIEF DESCRIPTION OF THE INVENTION

[0005]The present invention relates to the geothermal power cycle developed for binary-based geothermal power plants generating electrical energy from geothermal energy, which meets the above-mentioned requirements, eliminates all disadvantages and provides some additional advantages, and increases the amount of electrical energy generated by reducing the temperature of the air obtained through EAHE (earth air heat exchanger) and used in the cooling tower, especially in summer months.

[0006]Based on the state of the art, the object of the invention is to ensure that in the new geothermal power cycle designed, the generation of electrical energy from geothermal power cycles at much higher powers compared to the existing powers thanks to the cooling air in the cooling towers used in geothermal power plants and industrial plants passing through the EAHE, that the efficiency of the geothermal power cycle is improved and the efficiency of the air-cooled cooling towers is increased.

[0007]The object of the invention is to ensure that the outdoor air is cooled by passing the air required by the cooling tower through the EAHE circuit and the cooled air is directed to the cooling tower.

[0008]Another object of the invention is to ensure that cold air is supplied to the cooling towers even if the outdoor temperature is high, thanks to the passing of the air required by the cooling tower through the EAHE circuit.

[0009]Another object of the invention is to cool the binary fluid used in the geothermal power cycle by using outdoor air passed through the EAHE in the cooling tower.

[0010]Another object of the invention is to provide a more efficient and compact structure compared to existing systems thanks to the EAHE used in the geothermal power cycle, as well as to provide higher energy efficiency, higher electrical energy generation, higher energy efficient cooling towers and a more stable cooling air temperature.

[0011]The structural and characteristic features of the invention and all of the advantages thereof will be understood more clearly thanks to the detailed description given below, so the evaluation should be made by considering these detailed explanations.

DETAILED DESCRIPTION OF THE INVENTION

[0012]In this detailed description, the geothermal power cycle of the present invention developed for binary-based geothermal power plants generating electrical energy from geothermal energy, which is obtained by means of EAHE (earth air heat exchanger) and increases the amount of electrical energy produced by lowering the temperature of the air used in the cooling tower, especially in summer, is explained only as an example for a better understanding of the subject and in a way that does not create any limiting effects.

[0013]In the geothermal power cycle of the present invention, unlike the existing geothermal cycle systems, the cooler air required is taken from the external environment through the EAHE (earth air heat exchanger) and directed directly to the cooling tower. Thanks to the EAHE added to the geothermal cycle, energy inefficiencies have been reduced and the performance of air-cooled industrial cooling towers with high energy consumption such as thermal power plants, iron and steel and paper plants has been improved.

[0014]In the geothermal cycle of the present invention, an air tunnel system has been formed under the earth to cool the air by using the temperature of the earth without the need for extra energy. By measuring the current outdoor air temperature, the earth temperature in said air tunnels is estimated and the air is cooled by passing through these tunnels. The EAHE consists of these air tunnels formed under the earth. Thanks to the EAHE used in the geothermal power cycle of the present invention, a more efficient and compact structure is provided compared to existing systems, and higher energy efficiency, higher electrical energy generation and a more stable cooling air temperature are provided.