water – Page 9 – Geeky Girl Engineer

Reynisfjall and Reynisdrangur

Posted on May 19, 2014 by geek

While traveling east along the Ring Road on Day 4 in Iceland, we stopped to the west of Vik at Reynisfjall and Reynisdrangur. These are two spots right on the coast that offer spectacular views. The waves were crashing, a rainbow formed, and the view was gorgeous even without that drama. Also there are basalt columns which are just amazing.

Reynisdrangur basalt columns

Reynisdrangur beach

view of Reynisfjall from Reynisdrangur

view of Reynisdrangur from Reynisfjall

Reynisfjall beach

Reynisfjall view of rock outcrops

Reynisfjall view of bay

Rainbow to Reynisdrangur

Wave crashing at Reynisfjall

Skogafoss

Posted on May 19, 2014 by geek

Day 4 in Iceland had us traveling east. We stopped at Skogafoss, which is another must see waterfall in Iceland. Iceland is an island full of waterfalls. Seriously, you can’t go 10 minutes without seeing one. However Skogafoss is beautiful, and if you take the stairs to the top, you will be treated to magnificent views of the countryside. You can then hike past the waterfall viewing platform, where it follows the river that feeds it and reveals one waterfall after another. All of them are gorgeous. Lonely Planet refers to it as Waterfall Way. I don’t know if that is the official name, but it is certainly an apt name.

Skogafoss

View from top of Skogafoss

Waterfall Way

Bruarfoss

Posted on May 17, 2014 by geek

While visiting the Golden Triangle, we visited a second waterfall besides Gullfoss. Bruarfoss is a waterfall that my sister found out about through lots of researching on Iceland. It is kind of hidden, and it was not that easy to find. It is between Geysir and Þingvellir Park, just east of 355. You have to go into a summer house neighborhood to get there. You have to earn the waterfall, you might say, but it is totally worth it. The blue of the water is just beautiful.

Edited to add: Due to inquires, the following is best way I can describe how to get there. Take 37 northeast until you pass 355. Right after 355, look to your left (north), and you will see a neighborhood of summer homes. In May 2014, the first two turnoffs (i.e. closest to 355) into that summer home neighborhood had gates. The third did not. Thus after you pass 355, take the third left into the neighborhood. The roads were poorly marked in the neighborhood, but basically follow the road you took in past most of the houses to the back of the neighborhood, there was a very small turnoff to the left with enough room for about two cars to park. The turnoff was not at the end of the road, and it was not marked, but it was at the edge of a grassy area with no houses. There was short foot trail to a creek. At this location on the creek, there was a short foot bridge. My camera recorded the GPS coordinates of this foot bridge as Latitude: 64° 15′ 48.372″ N, Longitude: 20° 30′ 34.308″ W. Cross this bridge and follow the trail to a larger foot bridge that overlooks Bruarfoss whose GPS coordinates are Latitude: 64° 15′ 51.282″ N, Longitude: 20° 30′ 53.322″ W.

Bruarfoss

Bruarfoss pool

Bruarfoss outfall

Bruarfoss downstream

Bruarfoss water

Gullfoss

Posted on May 16, 2014 by geek

During the Golden Triangle visit, we of course visited Gullfoss. Gullfoss is an absolutely stunning waterfall. It is well worth the visit.

View of entire Gullfoss falls

Gullfoss, some of the highest falls

Gullfoss, middle section

Gullfoss canyon formed at end

Rainbow formed from Gullfoss

Geysir

Posted on May 16, 2014 by geek

Day 3 in Iceland. We did the Golden Triangle today. I’ve decided to post photos separately because there are just too many. Iceland is just amazing and amazingly beautiful. So first post today are from Geysir. Geysir, the original geyser from which all other geysers are named, actually rarely erupts. However, there are several other geysers and hot spots near it, and Strokkur does erupt quite frequently.

Geysir

Strokkur

Strokkur starting to erupt

Strokkur erupting

Strokkur flow deposits

Blesi

Fata

Fata water edge

Blue Lagoon

Posted on May 14, 2014 by geek

Day 1 in Iceland. I think I got about 20 minutes sleep on the plane. We drove to the western edge of the Reykjanes Peninsula to see the lighthouses in Garður. Then it was on to Iceland’s most visited tourist attraction the Blue Lagoon. Some genius turned what was a pool formed by wastewater from a geothermal power plant into a rather expensive, somewhat posh hot pot to which all tourists flock. It is really cool though. The water color is this gorgeous, cloudy sky blue. Also, they give excellent massages while you lay on a float in the lagoon. When you’ve been on a plane for six hours with no sleep, walking around a wonderfully heated pool and then getting a massage is quite frankly, a great cure for your exhaustion. Walking around the lagoon is great exfoliation for your feet, and they have buckets of silica from the lagoon to rub on your face for a facial. From a geology standpoint, the pool is really neat because you can walk through micro heat spots, not to mention to entire heated by geothermal heat thing. In some areas the pool is warm and in some areas, the pool is hot. The lagoon was also a great place for me to play with my new GoPro camera, which can be used underwater.

The area around the lagoon is bizarrely pretty. It is dark craggily, sharp volcanic rock that is covered with this lush, soft in appearance, green plant. I am guess the green is actually lichen or a moss, but I need someone to educate me on what it actually it.

Power plant which caused the Blue Lagoon to form

Blue Lagoon

Bridge over Blue Lagoon

I’d be curious to know if this bridge is ever not slippery

Not often you see a lifeguard dressed like that

Rock edge of Blue Lagoon

Precipitate on rocks

Surrounding terrain

Lichen? Moss? It covers the volcanic rock

Shower is Finished

Posted on April 20, 2014 by geek

The frameless glass shower wall and door have been installed. I had the glass company place a floating robe hook on the shower wall next to the door, so I could easily grab a towel when I get out of the shower. Also, on the glass front, the new bathroom window has been installed.

All the shower plumbing fixtures have also been installed. Most of the fixtures come from Grohe’s Atrio line. There is an multifunction rain shower head placed in the ceiling and a handheld shower head on a adjustable bar. In the photo below, the valve on the far left is the thermostatic valve that adjust the temperature for both shower heads. Then on the right are the flow valves that turn the shower heads on, the top one for the overhead head and the lower one for the handheld head. Thermostatic valves are a really nice feature because you don’t have to constantly find the right temperature in between showers, and they ensure the same temperature water comes out of multiple heads. I have already used my new shower, and it is glorious! The area is wonderful, nice and spacious but not so big to be insane, and the the bench is a necessity for any woman who shaves her legs.

Shower fixtures

Shower glass wall and door

Shower glass wall robe hook

Shower glass wall and door

Shower glass wall and door in place

New window

Driving Pilings

Posted on March 27, 2014 by geek

There is a bridge that is being demolished near my office that is now my destination and entertainment on my daily lunchtime walks. I previously posted video of the demolition of a concrete column. The other day during my visit, a crane with a hanging vibratory hammer was driving steel sheet pilings into the riverbed to form a cofferdam. There was already a cofferdam around one of the bridge piers, which has now been demolished. I am assuming this new cofferdam will surround the next pier, so it can be removed. The before and after photos of the pilings being driven are below as well as video of it happening.

Driving pilings, before

Driving pilings, after

Frozen Potomac

Posted on February 4, 2014 by geek

Last Sunday I went for a walk across the Potomac River and around the Tidal Basin. I had never seen the water there frozen before, and it was really neat to see. The ice made for some nice and interesting photos.

Arlington Memorial Bridge and Lincoln Memorial across the Potomac River

Plates of ice on the Potomac River

Washington Monument and Jefferson Memorial across the Potomac River

The Pentagon and Air Force Memorial across the Potomac River

Washington Monument across the Tidal Basin

Canada Geese on the frozen Tidal Basin

Jefferson Memorial across the Tidal Basin

Inside a Water Filter

Posted on September 8, 2013 by geek

This is what happens when an engineer with an insatiable curiosity, power tools, and clearly too much time on her hands changes the water filter inside her refrigerator. Yes, that is pretty much it. There really is no other point to this post. Most normal people would take the old water filter and throw it away. I am not a normal person, and I wanted to see inside it, so I cut it open. Warning and reassurance to my mom: I wore a half-face respirator with PM10/VOC filters, goggles, and a leather glove while I cut through the filter. I strongly recommend if anyone else tries this, you do this also. I didn’t want to breathe in the dust or get it in my eyes.

Here is the filter before I began.

Photo 1: Used water filter for my refrigerator, side view

Photo 2: Used water filter for my refrigerator, top view

Here is the cross section after I cut through it length wise.

Photo 3: Water filter after length wise cut

The filter consists of a plastic shell that contains a hollow, round-bottom, cylindrical carbon filter. It is kind of hard to see, but the middle of the carbon filter is hollow. The carbon filter is held in the center of the plastic shell, so that there is free space all around the filter. Here are the two halves of the carbon filter side by side with inside of one shown on the left, and the outside of the other shown on the right.

Photo 4: Two halves of the carbon filter, showing inside and outside

As you can see the inside is still very black while the outside has started to gray. I have a hypothesis for the reason, which I will get to soon.

Here is the plastic shell with the carbon filter removed.

Photo 5: Plastic shell of the filter

Now here is a close up of the inside top of the plastic shell.

Photo 6: Close up of the inside of the top of the plastic shell of the filter

Notice how there are channels formed radiating from the center? The filter only has one opening, the hole in the center in the top, as is shown in the second photograph. Thus, one of the reasons I cut the filter apart was to try to figure out how it works. Water goes in through the center, but how does it get out? What follows is my engineering guess as to how it works. I am fairly sure the water comes in through the center hole, and the water pressure in the house forces it into the hollow center of the carbon filter and then through the carbon in all directions radiating outward. The water then is stored on the outside of the carbon filter until it is pulled by the refrigerator’s water dispenser or the ice maker. I think the white matter that has formed on the outside of the carbon filter that gives it a grayish appearance is calcium and magnesium, otherwise known as hardness. I live in Arlington County, Virginia, and our latest water report lists our water’s hardness as 125 mg/l. According to the United States Geological Survey, that puts our water as just in the hard range.

So if the water is stored on the outside of the carbon filter, how does it leave the filter to get to the water dispenser or ice maker? That is where I think those channels at the top of the plastic shell come in. In Photo 3, you can see the plastic top of the carbon filter fits flush with the top of the plastic shell, but the top of the plastic shell has those channels. Because of the space between the plastic shell and the carbon filter, the water can enter the channels from the outside then flow through the channels back to the hole in the center. However, the now filtered water does not flow back the same hole where the unfiltered water enters.The plastic tube at the top of the carbon filter prevents the filtered water from going back into the filter. Instead the filtered water leaves next to the center hole. In Photo 2, two rectangles can be seen next to the center hole, at approximately 1 and 6 o’clock in the photo. Those rectangles are holes, and it appears that the water that flows through the channels then can exit the filter through those rectangular openings. I can’t tell exactly this happens even though I examined where the filter attaches in the refrigerator. I did consider that perhaps I have the flow direction completely opposite, that is that the water enters through the rectangles, flows through the channels into the open space, then is forced through the carbon filter into the center of the filter. There are a variety of reasons, geometry, fluid dynamics, water pressure, etc., why I am fairly sure this is not the case.

So that is how my refrigerator’s water filter works. See this was educational. It was not just about me having fun with my Dremel rotary power tool and destroying something. Really it wasn’t.