xaminmo: Josh 2016 (Default)
I ponder macro-nutrition needs a whole bunch. Here's what I have handy, though my technical references are scattered and omitted.

There's always a need for roughage, vitamins, and minerals, which come from foods with very low calories/kilojoules. Aside from that, the three main macros have
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http://omnitech.net/xaminmo/2017/08/15/body-energy-usage/
xaminmo: Josh 2016 (Default)
Max bodyfat you can burn in an hour is roughly 1 gram per 10 pounds, or in calories, 9 times your weight in pounds.

Anything else is food, muscle glycogen, or actual muscle tissue. Glycogen max is about 4% lean muscle mass, which usually is enough for 90 mins, plus or minus. Food is whatever is in your gut, though exercise slows digestion.
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Syndicated: http://omnitech.net/xaminmo/2017/08/06/cycling-fuel/
xaminmo: Josh 2016 (Default)
QUESTION:
If time slows to a near stop for objects travelling close to the speed of light, what happens to time when all momentum is at a dead stop?

ANSWER:
The short answer is, with true zero momentum, you would cease to exist. If you had very small momentum, then time would pass very very
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http://omnitech.net/scitech/2017/03/20/zero-momentum/
xaminmo: Josh 2016 (Default)
This is how a SWAG average power on a bike ride:
http://ns1.omnitech.net/cycle/

My assumptions, recently updated, are:
* 86F, 600' elevation, 30% humidity, and 1 atmosphere of pressure
* 25% human efficiency (racers might be a little more, newbies a little less)
* 95% bike efficiency (Rusty bearings and flat tires would be less, race-bike better)
* 0.004 Coefficient of Rolling Resistance (Recently adjusted - on the low side for road, just to be fair).
* 0.6 Coefficient of Wind Resistance (on the drops, relatively upright, larger mass)
* 1.1 m^2 frontal surface area (I'm a big guy)
* One stop every mile (Roughly what I do in Irving).

There are such huge variances in some of these based on intarwebs scientific abstracts that I'm not even sure if this is valid. Whenever I get a power meter, I'll tweak this to be more accurate. I may get a couple different sized people to ride my bike for comparison. That won't show any of the Coefficients of Friction directly, nor human or bike efficiencies, or any of these numbers.

There are plenty of other tools out there, such as:
http://www.analyticcycling.com/ForcesPower_Page.html


http://omnitech.net/xaminmo/2014/06/19/bicycle-energy-calculator-2/
xaminmo: (Josh 2004 Happy)
So, the blower door test was run on our house today. Our ACH was 0.39, which means 39% of our air exchanges with the outside, per hour. Energy Star rating is 33% or less, and average for our age of house is around 50%.

Also, our vents leak 0.2% to 0.7%, and target is under 2.2%.

Most of the downstairs windows and doors have had the caulk redone with long-life, elastomeric goodness.

The overall air leaks of our entire house combined would be a square hole 11" x 11", and the yearly cost of that leaking is $112.

In other words, our house is doing great as far as energy efficiency goes.

I still plan to
* finish recaulking windows (upstairs, plus the office downstairs, plus the patio door)
* get radiant barrier and a ridge vent after the roof is redone
* Look into more blow-in insulation for Max's bedroom wall
* Look into topping up the attic insulation
* Look into insulating the plenum that lets garage air and heat into the upstairs sidewall.
xaminmo: (Josh 2004 Happy)
Waiting for photovoltaic cells that use a phosphor coating to translate photons into energy levels that can be more readily absorbed. I'd made a note to look into this, and when I did, it looks like there were some promising results about 5 years ago with UV to visible translation, and a factor of 14 improvement in electric output. But, that's just for the UV component. Maybe some sort of prism could be used to split visible light off to one PV cell, and UV to another, while IR could go to either another, or maybe used for a thermocouple of sorts. Something this big would really only be efficient if you could use multiple reflectors to focus more light onto the PV cells. Hrmmm.
xaminmo: (Josh 2004 Happy)
What I like best about mandalas is that they are circular, yet almost fractal in design.  Our brains are literally deflated spheres.  Our thoughts take circular paths until they resonate.  Our voices, and interactions, resonate through the minds of others, and on and on, until indiscernible echoes find their way across the globe, and even back to us. We contain echoes of the past, and create echoes into the future.  And by "we", I mean everything, not just humans.  All of these are patterns in the flow of energy.  Every flow has life in it, whether that is a camp fire, or the aurora, or the flow of galaxies across the universe.

Energy

Apr. 17th, 2007 04:12 pm
xaminmo: Josh 2016 (Default)
Ok, so, most of our lightbulbs have phased into compact florescent bulbs over the last couple of years. They range from 9 to 27 watts.

We have two LED bulbs that serve as nightlights (0.5w or less).

A couple of years ago, we replaced the windows with Energy Star, low-E, argon filled windows. I don't recall the R value of them.

At the same time, we had the siding replaced, which included fiber insulation board on the non-brick sections of the house. Again, unk R-Value.

In July of 2006, our 1977 AC and furnace were replaced with 14 SEER/8.6 HSPF (14BTU per WH roughly for cooling) heat pump.

Today, we switched to the 100% green power plan at TXU (EarthWise). Where the average customer's money pays for energy futures of gas, coal, wind and nuclear, our money only pays for energy futures from renewable Texas sources.

The price difference is substantial. We seem to vary from 1400 to 3000 KWH, though the 3MWH was the month our AC was determined to be failing. Our rates vary from 13 to 16 cents per KWH, depending on month of the year and KWH used. The new rates are 15.4 to 17 cents per KWH; however, there is no seasonal upcharge in the summer.

Our average billing plan has consistently been $80 or more over our actual usage since the change, so I don't think we'll notice the change. We have hit over $400 in 1 month as a peak rate. Last month, 1616KWH cost us $228.24 and we paid $314.38.

We have an appointment with Quality Conservation (877-260-5399) to inspect for air leaks from ducts, windows and doors. They will do repairs for free since we're TXU customers. I think it's ultimately billed back to the federal government.

I think we need to look into getting our house reinsulated too, but we'll see what QC finds for us first.

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