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Iceland visit inspection report Yoshizaki Masaru Hirooka Taizo

September 5 - 9, 2016

Introduction

The purpose of the tour was to observe geothermal power plants in Iceland, one of the world's leading geothermal countries, and at the same time, assess the current situation and future potential of implementing cascade secondary usage in Japan.
Iceland is a country with a population of 320,000, without major secondary industries, where fishery is thriving and whaling commerce is allowed.
The area of Iceland is roughly 1.2 times the size of Hokkaido (103,000m2). Its capital, Reykjavik is the northern most capital in the world.
Located further north than Hokkaido (64 latitude north 8 degrees), even with warm currents in august, temperatures are around 15oC which calls for temperate weather warm wear.
During that period, the famous aurora (polar lights) can also be seen.

 

Purpose of inspection

In this overseas visit, the purpose is to explore ways to develop Teshikaga town as a potential next generation geothermal project by Fuji thermal company, with the aim of improving the knowledge of the industry experts through first hand experiences and presentations.

 

First day in Iceland

We paid a visit to the renowned tourist spot in Iceland, the Golden Circle.
In three places includes Stroke's geyser, Synchetriel national park, and Gulffoss waterfall, we were able to enjoy the scenes of powerful scenery like the feeling of earth pulsatating.

 

No. 1 Stroke Geyser (Geysir Geyser)

Here in Stroke Geyser, there are several large pool of hot spring water fanned out in a wide plateau. The image below is of the gentle plateau of a ghellfs valleyh. The largest fountain geyser is said to represent the breathing of the earth, ejects fumarole with hot water at about 8 minute interval. Because the water column height reaches about 20 m, visitors have to pay attention to the wind direction affecting the direction of hot water sprayed. Although activities of the geyser are weakening, witnessing the geyser fumes has become a popular tourist attraction.

In Japanese variety shows, comedians have tried to use the geysers to cook thinly sliced meat (shabushabu) in a comedic effort to entertain people while accidentally scalding themselves.

 

No.2 Thingvellir National Park

The Thingvellir National Park lies in a rift valley that marks the crest of the Mid-Atlantic Ridge and the boundary between the North American and Eurasian tectonic plates. To its south lies Tingvallavatn, the largest natural lake in Iceland.
Here, the continental drift between the North American and Eurasian Plates can be clearly seen in the cracks or faults, often called ggaoh by local people, in various places. You can also observe a rocky surface unique to this area. The scenery is similar to that of a small Grand Canyon.

 

No.3 Gullfoss Waterfall

The waterfallfs maximum width is about 70 m, while the depth is about 15 m at the 1st step, and about 30 m at the 2nd step. It is the most famous waterfall in Iceland.
If the timing is right you can see a beautiful rainbow.

 

No. 4 Hetrishage geothermal power plant (with Headris Haydi geothermal power plant)

This power station, which is the second largest in the world, is located in Hengill in southwest Iceland and has the largest scale in the country.
In October 2011, 303 MW of electricity and 133 MW of thermal water were generated.
Turbine is currently being upgraded to increase target electricity capacity to 400 MW. Upon completion, Hetrishage geothermal power plant will become the largest in the world.
The largest geothermal power plant in Japan is Hatchobaru geothermal power station (Capacity: 10 MW).
Currently, Indonesian Salura Geothermal Power Station is the world's largest (Capacity: 330 MW)
The plantfs power generation ratio from geothermal steam is about 70%.

 

The power station has facilities to accommodate visitors and observations. When we visited, it was quite crowded.

Staffs do not normally provide explanations, but this time we were able to ask the local staff for a special guided tour.
The depth of the production well is 2,500 m. The drilling cost is about 500 million yen per well
Currently, a set of 60 production wells (main wells where geothermal fluids are taken out) and 6 injection wells (wells for geothermal source to replenish) are in-use.

 

You can observe the inside of the turbine room through a glass window from the second floor hall.

 

Also on the second floorfs hall, pipes used for supplying hot water from the plant to each house in Reykjavik city are exhibited.

 

When going out onto the outdoor balcony from the second floor hall, you can see a massive device and a magnificent scenery.

 

Day 2 in Iceland

On the second day of the tour, we visited "Svartsengi Geothermal Power Station", which is located alongside Iceland's leading tourist facility the "Blue Lagoon". We explored how the "Blue Lagoon" became a successful model of geothermal power plant as well as a recreational tourism facility.

 

No 5 Blue Lagoon

The Blue Lagoon is a hot spring facility located in Iceland, about 40 km southwest of the Reykjavik capital.
(Written as Blaa lonid in Icelandic language)

 

The interior of the building is well designed and furnished, and the staff wear black uniforms.
It is necessary to book in advance since the service here is by reservation only.

 

Guests receive an IC tagged wristband and bath towel at reception, then proceed to the changing room on the second floor.

 

Some people even dine in (rental) bathing gown at the restaurant.

 

Instead of natural hot spring water, this facility reuses the discharge of the hot water pumped through the adjacent Svartsengi geothermal power plant.

 

The Blue Lagoon was created as a byproduct of geothermal power generation in the latter half of the 1970s, and began to be open to the public as a hot spring bath since 1987.
The discharged water is over 70 degrees, subsequently tempered down to around 38 degrees for bathing.
It is the world's largest outdoor hot spring, boasting an area of about 5,000 ms (or 4 50m swimming pools).
The Blue Lagoon so large that it takes 10 minutes just to go around the whole hot spring.
Poolfs depth varies from place to place, the deepest part is about 1.4 m.
Temperature also varies and by adjusting your position to find your best temperature zone you can enjoy yourself for quite a long time. There is also a bar in the middle of the hot springs where you can relax with a glass of beer or soft drinks.

 

There are island-like platforms made of woods warmed by the heat from hot springs in some places. In addition to the big outdoor bath, there are also mud packs, massages and saunas.

 

Many people, not only from Iceland but also from various countries all over Europe and the United States visit the Blue Lagoon for the cloudy hot spring water, which is said to have healing effect, and good for your skin.
It is close to Keflavik International Airport and an immensely popular tourist attraction in Iceland.
The number of visitors per year is around 400,000. Entry fee is around 40 ~50euros (4,500 yen to 5,600 yen) and increases June and August
Currently, adjoining hospital facilities are being constructed, further expanding the already large facility.

 

No.6 Svalus Einghi Geothermal Power Station

Svalus Einghi Geothermal Power Station, adjacent to a hot spring bathing facility (Blue Lagoon), is a leading geothermal power station in Europe.
As of December 2007, the power generation output is 76.5 MW and at the same time it produces hot water of 90 ‹ C (194F) At a flow rate of about 475 litres per second (equivalent to approximately 80 MW).
The surplus water rich in minerals produced by this power generation is used for the Blue Lagoon.
Although this geothermal power plant does not allow visits, we contacted the locals in advance and were given special permission to observe the plant.

 

There are 2 sets of 26 production wells (depth 1,800 to 2,500 m) and 2 sets of 2 injection wells used for power generation. The amount of steam (240 ‹ C) ejected from geothermal reservoirs is 600 kg / s. They use 550 kg/second of steam for power generation. The plant extracted CO2 gas from the geothermal steam and offset around 15,000 tons CO2 / year through carbon recycle methods.
The generation ratio to geothermal steam output is about 90%

 

Binary generator made by ORMAT 1.3 MW ~ 3 units. Water temperature is 90 Ž.

 

The plant supply electricity for 25000 people in Iceland.
After power generation, geothermal hot water is cooled down with fresh water and delivered it to residential area as hot water.
Because of a past defect detected in pipelines, hot water is currently adjusted to ph 7 or less.
Subsequently geothermal hot water (over 70 ‹ C) is supplied to the Blue Lagoon. Supply amount is 25 kg / s (1,500 L / min).

 

At the time of visiting, pipe cleanup of one gas-water separator was carried out.
A crystal of about 20 mm in thickness stuck to the inside of the pipe. Clean up must be performed periodically.

 

The monitoring room is generally vacant.
There are no electric and electronic troubles caused by hot spring atmosphere gas (hydrogen sulfide gas) whatsoever.
The light blue part of the model encased here is the original shape of the Blue Lagoon resulted from draining geothermal hot water after long ago after power generation.

 

Conclusion

Despite having no major industry, Iceland is a beautiful island country blessed with abundant resources both in the natural environment and underground.
At a glance, there is so much greenery in Iceland that perhaps it would be more suitable if they swap their country name with Greenland. Furthermore, electricity and hot water are produced by utilizing the natural resources such as geothermal energy and hydropower.
Blue Lagoon is a unique hot spring facility, where electricity is generated through multistage cascade method, allowing harmonious coexistence with nature. Around 400,000 people visit the facility annually.
Now that Iceland is on track to become a tourism country with over 1 million visitors to Golden Circle, Blue Lagoon, Glacier, Aurora Observation, environment preservation has become a highly prioritized issue.
Their goal is to create sustainable energy while coexisting with nature.
Geothermal energy is not infinite either. There is a possibility that it will be exhausted by earthquakes and underground fluctuations, which should be carefully researched in the near future.

 

Reflection

We would like to express our deepest gratitude to everyone who has spent time and effort to make this study tour in Iceland possible.
This is the first time we have visited Scandinavia and everything was mesmerizing.
Everything about the nature, Blue Lagoon, geothermal power generation, the large crystals extracted, and the site location was wonderful.
The knowledge we have gained from this study tour would serves as invaluable insights to design a regional business model that can coexist and flourish with nature in Japan, the promise land of geothermal power generation.

 

 

 

 

 

 


Šึ˜Aƒy[ƒW

Fiscal Year 2018
Since our establishment of the Goiyuen Geothermal Power Plant, we have received many visitors every year, both domestically and internationally.
Fiscal Year 2017
Since our establishment of the Goiyuen Geothermal Power Plant, we have received many visitors every year, both domestically and internationally.
Fiscal Year 2016
Since our establishment of the Goiyuen Geothermal Power Plant, we have received many visitors every year, both domestically and internationally.
Fiscal Year 2015
Since our establishment of the Goiyuen Geothermal Power Plant, we have received many visitors every year, both domestically and internationally.
Fiscal Year 2014
Since our establishment of the Goiyuen Geothermal Power Plant, we have received many visitors every year, both domestically and internationally.
Fiscal Year 2013
Since our establishment of the Goiyuen Geothermal Power Plant, we have received many visitors every year, both domestically and internationally.

 
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