Geothermal power generation Smart grid Realization of urban self-sufficiency and infinite energy source

[Abstract]
Infinite, powerless, self-sufficient distributed microgrid (smart grid) with multiple networks of closed cycle heat exchange binary geothermal power generation systems (hereinafter referred to as "recycled dough heat power generation") developed by our company, which covers the entire geothermal field and is equipped with a heat regeneration binary engine. By implementing it in a city as a self-sufficient energy source, an inexpensive and infinite power supply source of several yen / kwh will be built into the city.
As a result, the local power generation system will be able to avoid high-priced power purchases and transmission losses on the cliffs, reduce the burden on the city, and fully meet the power demand required in the city.

[Explanation]
As a next-generation energy source (self-sufficient, infinite energy source) that can be installed in the HEMP shelter, we have found it difficult to operate geothermal resources (high temperature rocks, hot water, low temperature hot water, hot water). We have developed a geothermal power generation system consisting of a heat regeneration engine and a generator with the optimum power generation range of 40 ° C or higher in the low temperature region.

1. 1. The following is an overview of the geothermal power generation system.
(1) Power generation of low-temperature heat source energy in geothermal resources (hot dry rock geothermal energy, hot water, low-temperature hot water, hot water), which is an infinite energy source, with the same efficiency as natural gas power generation.
(2) New development of a thermal regenerative power generation engine with an operating range of 40 ° C or higher in geothermal resources (high temperature rock body, hot water, low temperature hot water, hot water), which is an infinite energy source, instead of the turbine method (3) Nuclear power generation Newly developed next-generation energy power generation system as a self-sufficient and infinite energy source that surpasses.
(4) Waste heat and geothermal heat are used as power generation energy sources. There is no need to replenish power generation fuel such as coal and natural gas.
(5) You can freely get abundant electric power at any place and in any amount at any time.
(6) It is possible to replace the current nuclear power generation.
(7) The cost is 1 yen or less / kWh (nuclear power generation cost is 8 yen / kWh, solar power generation cost is 12 yen / kWh), which is a lower price that far exceeds the cost of nuclear power generation and solar power generation.
(8) No decommissioning treatment like nuclear power generation is required.
(9) Our geothermal power generation system is a clean power generation system that has zero emissions (nearly zero waste) and does not emit radioactive substances like nuclear power generation. Therefore, even if it is installed in the HEMP shelter as a lifeline power supply, it does not contaminate the inside of the shelter.
(10) Consists of a thermal regenerative engine and a binary generator with a heat source of 40 ° C or higher, which was difficult to use in the past, as the optimum power generation area for geothermal resources (high-temperature rocks, hot water, low-temperature hot water, hot water). It is a geothermal power generation system.
(11) The energy of a low-temperature heat source can be generated with the same high efficiency as natural gas power generation.
(12) It is not fixed to the volcanic area as in the past, and can be installed anywhere on the ground regardless of the location. For example, it can be installed in urban areas.
(13) A distributed microgrid (smart grid) configuration in which multiple power generation systems are networked is possible. This eliminates the need for traditional power transmission systems that transmit power from local power generation facilities to cities. At the same time, transmission losses can be avoided.
In a general power grid, when 100km is transmitted, half of the power becomes heat as a transmission loss.
(14) With thermal efficiency higher than that of natural gas power generation or nuclear power generation, it is possible to configure from a 100kW class compact power generation system to a 1000GW class power generation system that surpasses nuclear power plants.
(15) A distributed microgrid configuration with multiple networks of power generation systems is possible.
(16) Most of the power generation facilities in rural areas are extremely expensive power with a selling price of 40 yen / kwh.
Our geothermal area cover Newly developed heat regenerative binary engine installed Closed cycle heat exchange When a distributed microgrid (smart grid) with multiple networks of binary geothermal power generation systems is configured in the city, it will be possible to supply electricity in the city.
(17) As a result, solar power generation is a typical example of local power generation equipment, but it is not necessary to purchase extremely expensive local power with a selling price of 40 yen / Kwh. It will be possible to reduce the social burden on the city.

2. The following is the details of the newly developed geothermal power generation system (geothermal power generation system).
(1) Succeeded in research and development of a thermal engine and thermal regeneration system capable of generating electricity in a low temperature region of 40 to 95 ° C in geothermal resources (hot dry rock, hot water, low temperature hot water, hot water).
This system is a closed system that does not generate waste such as wastewater with zero emissions and does not need to supply fuel such as coal, oil, and natural gas.
Therefore, as a lifeline power supply compatible with high-altitude electromagnetic pulses, it can be operated while covered with a HEMP shelter.

(2) The thermal engine is a power source for giving rotational force to the connected generator to generate electric power, and the thermal engine transmits the steam force generated by the working fluid to the generator as rotational energy. Prompts the generation of electricity.
The heat regeneration system is a mechanism that recovers the heat energy from the heat source (hot spring or hot spring) and applies it to the working fluid. We have newly developed an expander that operates efficiently even at low pressure and incorporated it into the heat regeneration system. It is unique in that it is.

(3) The above thermal engine is a thermal regeneration system that can generate electricity in the low temperature range of 40 to 95 ° C, which has been difficult to reuse. The installation area is as compact as 2 m².

(4) The power generation capacity is 1GW to 10GW per geothermal power generation system.
This is equivalent to the power generation capacity of 1 to 10 units in terms of the largest nuclear reactor.
It can supply electricity to a population of 1 to 10 million.

(5) Our thermal engine is also characterized in that it operates around the boiling point of the working medium.
Therefore, a low boiling point working medium can be used to generate power from a cold (specifically, 40 ° C) heat source.
Specifically, the geothermal power generation system equipped with our thermal engine generates electricity by combining (1) HFC245fa as the operating medium, (2) a heat source of 40 ° C (underground hot water), and (3) cooling water of 25 ° C.

(6) The geothermal power generation system in which the heat engine and the heat regeneration system are connected to the generator has been difficult to use for geothermal power generation in geothermal resources (high temperature rock body, hot water, low temperature hot water, hot water). It is possible to recover the heat energy from the heat source in the low temperature range of 40 to 95 ° C, which has been used, and efficiently convert it into electric power.
The heat-electric conversion efficiency of the thermal engine is extremely high, twice the heat-electric conversion efficiency of a conventional geothermal power generation system (normal operating temperature of 120 ° C).

(7) As a specific example, consider a geothermal power generation system that stores heat energy at 80 ° C in a heat storage tank and circulates the heat source to generate electricity.
Conventional geothermal power generation has the problem that the temperature range of the heat source required for power generation is nominally 80 to 150 ° C, and the lower limit of the practical operating temperature is about 120 ° C.
Since this fundamental problem cannot be fully solved, (1) the installation location is significantly limited to the vicinity of the volcano and the hot springs, and there is a problem that it is difficult to spread.

Since the thermal engine developed by us can supply power to the gas turbine generator with high efficiency in the low temperature range of the spec value of 40 to 95 ° C, the geothermal power generation system generates power until the heat source (hot water) reaches about 50 ° C. As a result of being sustainable, the total amount of power generation is larger than that of other companies' technologies.

On the other hand, conventional geothermal power generation requires an operating temperature range of 120 ° C or higher, which limits the location of generators to places such as volcanic areas and national parks, which has been a bottleneck for widespread use.
Our geothermal power generation system allows a very low temperature range of 40 ° C or higher, so it can be widely applied to areas where hot water comes out as a generator installation location, and it is a special area such as a volcanic area or a national park. The feature is that it is not limited to the place.

(8) Application examples of our geothermal power generation system (closed cycle heat exchange binary geothermal power generation system equipped with a newly developed heat regeneration binary engine covering the entire geothermal area) are not limited to underground hot water.
For example, many industrial plants use a large amount of industrial water to reduce the temperature of wastewater to about 50 ° C.
By introducing our thermal engine and heat regeneration system in such a plant, it will be possible to extract electricity in the process of lowering the wastewater temperature instead of inputting a large amount of industrial water.
As a result, it is possible to configure a system with excellent economic efficiency.

(9) Covering the entire geothermal field of our company Closed cycle with newly developed heat regeneration binary engine When a distributed microgrid (smart grid) with multiple networks of binary geothermal power generation systems is configured in a city, it is infinite, no power failure, and self-sufficient. It will be possible to realize an energy source in the city. As a result, the city will be able to adequately meet the required electricity demand.

(10) As a result, the burden of purchasing local power, which is extremely expensive at a selling price of 40 yen / Kwh, due to solar power generation, which is a typical local power generation facility, can be released, and the social burden on the city can be reduced.

* If you have any questions or concerns, please contact us.