Tag: efficiency

March 26, 2025 – Experimenting For Peace of Mind

March 26, 2025 / / 0 Comments

I am in the opening phases of meal planning. I am planning on using freeze dried meals for at least some of my meals, preferably both morning and evening. One of the things that I have no handle on whatsoever is how much fuel will I need for this. As with all containerized gas, even a fuel style gauge wouldn’t be terribly helpful other than giving something to worry about.

So, I set about running a test. How long does it take to heat up water to boiling and how long will a full cannister burn. From that information, I will be able to devise a usage calculation to tell me how much fuel will I need.

Technically speaking, I could probably do this on the trail during my practice runs. But I think an actual controlled experiment not only will give the information faster but also probably will be more accurate. Trying to keep track of stuff in the field is difficult unless you are extremely disciplined. I try to do this at the rifle range, even keeping notes and I still forget stuff all the time.

I performed this experiment using the 100 gram fuel cannister. It is the smallest and I would think the fastest to complete. I will extrapolate the results to a 230 gram cannister which is what I think I want to take with me but I don’t want to run the test for double the amount of time.

The other potential variable of the test is that I am burning a Jet Boil brand cannister. The larger size (more locally available) is the Kovea brand. I am going to assume that the fuel weights are as advertised and that both brands are the same fuel mixture generating the same BTUs.

Here are some variables that I cannot test here. The first one is elevation. Because air pressure is lower at higher elevation, water will boil at a lower temperature. This effect becomes prominent at elevations greater than 3000′. Assuming complete combustion (full BTU conversion), in theory elevation should add runtime to the stove.

Another is temperature. The outside temperature will presumably be lower in the morning and warmer in the evening. I performed my test at ambient basement temperature which was 62 degrees F. Those effects will possibly cancel each other out taking more time in the morning and less in the afternoon.

A larger temperature component would be the starting point of the water. I started with tap water which is probably around 40 degrees F. If my water is straight out of a mountain stream, it could be 33 degF. It could also come from my pack which may be 90 degF (I really hope not). So, that may range from no effect to longer run time.

The final variable I could test is how much water do I need to heat up? I ran two measurements 1L time and 1/2L time. For freeze dried meals, I will likely only need 1/2L but for breakfast, I very will want some coffee or tea. I think it is always better to heat up more than you need for cleaning purposes as well. I guess what I am saying is it seems like 1L is probably the realistic measurement.

To my surprise, the 100g cannister ran for two hours. I found that 1L took 9:20 to boil and 1/2L took 5:40. If I round up, I should get 12, 1L boils or 20, 1/2L boils. This tells me that one 230 gram cannister should be more than adequate for my meals for a week. That would be a 4.6 hour (276mins) run time with 27, 1L or 55, 1/2L boils.

One critical thing my test did show me is a result of the fact that I didn’t run it straight through. I found that the igniter only worked the first couple of times. I do see it sparking but I cannot say if that is a gas issue or an igniter issue. As a result, I will need to have a secondary ignition source. I already have a lighter in my pack so that should be good to go. More testing on this is definitely warranted.

End Your Programming Routine: I now have peace of mind. The only other consideration I may make is redundancy. If I choose to only bring one cannister and a leak develops or some other issue, I may be stuck. I could choose two 100g or one spare 100g or none at all. I have not yet decided if I want to bring a back-up. That is to be determined.

January 20, 2025 – Winter Is the Time For Rest

January 20, 2025 /

Since the beginning of time, man and nature rested in the Winter. I think I am inventing a new tradition. Just kidding, but today I talk about current events in my life and what my plans are moving forward. There is a reason the saying ‘No Rest For the Wicked’ is common. It describes me perfectly.

July 13, 2021 – Sealing Air Leaks For Comfort

July 13, 2021 /

Having lived in old and new houses, they both have their advantages. New houses are energy efficient, provide the conveniences that are desirable and laid out in a way that appeals to our sensibilities. I prefer the old personally, I like the character. But that does come with many drawbacks.

One of those drawbacks is that retrofits often damages the integrity of the building envelope (said more plainly: holes where there didn’t used to be). Another one is materials built for one function but used differently. For example, windows were built to operate. Because they were made of wood, tolerances needed to accommodate for thermal movement and swelling due to water. So, there was some play in how tightly they fit in the jamb. So, if there is no weather stripping, this becomes a perfect place for a lot of air leaking.

One of the podcasts that I listen to, the Fine Homebuilding podcast talks a lot about this subject. Believe me, it seems like there is a lot to know on this subject particularly when it comes to HVAC sizing, efficiency and comfort. In my case, I don’t have to go to higher tech testing or solutions to find some high value and low cost improvements.

When I started working in the basement, it was winter. The normal temperature was around 57 degrees before the heat came on. If I ran the heater all day, I would see the temperature come up to 64 degrees by the end of the day. As we have moved into summer, the ambient temperature changed to around 62 degrees. It is still too cold to be comfortable in most cases. This was the first driver to build my office space was the desire to be more comfortable during the day.

As I moved to the north end of the basement, I could actually feel the temperature get colder. I knew that there was outdoor air leakage, but I took some pictures that your could see a couple of problems.

It doesn’t take a lot of imagination that when you see daylight that there is air leakage happening (not to mention water and vermin). I was looking around right before the heat wave and I saw something that not only could I address but it would be helpful. Under our kitchen is a crawlspace and that is vented directly outside. Essentially, the basement has the leaks shown but also 2 square feet of holes directly to the outside.

I had leftover rigid insulation so I built a box around the hole. As a result, I have seen morning temperatures move from 62 to 68 degrees. I have no doubt that in the winter it will be somewhat colder I am guessing add five degrees to 57 but I guess we will see.

There is one drawback to this modification which I have considered. Potentially, the air leakage in the winter provided a degree of warmth that kept pipe freezing to a minimum. I have had freezing on the hose bibs before but never in the kitchen plumbing. I may decide to remove this modification if the temperatures get significantly below freezing.

I do have one other option. It is not clear from the picture, but there is heat tracing on the piping. Most of it is in suspect condition and I have been removing it wherever it is in the way but I could hook it back up and then I wouldn’t have to remove my new box.

End Your Programming Routine: While there is no doubt that my results are anecdotal and not scientific I saw immediate change the day after installation. The cost was free since I did not have to purchase anything additional and it took me about two hours to build, fit and install the box. I expect that this will not only make the basement more comfortable, but also I think it will have an small energy impact on the whole house. At the very least, I will not need to run the heater so much in the basement.