Posts Tagged ‘saving’

Updates on the Solar Heater

Monday, March 9th, 2009

The Solar heater has been running for about 1 month now and I have a few updates to make on it’s performance:

space_heater_main_sc.jpg

  •  Maximum observed temperature in room … ~74 degrees
  • Out of the last 30 days in my office I’ve only had the heater on 2 times.
  • It’s been a bit warmer and sunnier than usual (2 F greater average temp in Feb in 2009 than 2008)
  • Estimated energy savings on electric heating bill in February, March (and by inference Oct and November) ~50-75% of total bill.
  • Number of hours of heat delivered per day ~8
  • Time when maximal temperature is reached ~3 pm
  • Time when temperature in room drops below 65 F after a full day of heating- ~10 pm-1am.
  • Maximum temperature inside heater ~110-130 F (even when it’s 30 F outside)
  • Possible efficiency improvements:
    • glass on front of box instead of polycarbonate, with better sealing to minimize convective heat loss and maximize solar gain.
    • air must be collected from bottom of room for optimal heat exchangement
    • neighbor’s tree and house must be removed for more direct sunlight.

But overall I’m quite happy with the project.  It has practically already paid for itself and best of all… my wife thinks that it’s an acceptabley asthetic project completed on a nice timeline to warrant further tinkering in the garage :-)

Kill-a-watt

Wednesday, February 4th, 2009

Greenies are known for being penny pinchers and energy misers.  But how to go about it in a scientific way?  And can you even really save that much money/energy consumption?

Recently I purchased a Kill-a-watt (~$20 on Amazon.com).  The kill-a-watt is a simple device that plugs into the wall.  To measure your energy usage, you simply plug in the appliance or a power strip with several appliances.  It has an LCD and several functions to help you monitor your device(s) energy usage… both when they are on and when they are off.

But when my coffee maker is off, it’s off right?

No!

Surprisingly (to me at least) most modern appliances still consume a fair bit of electricity when turned off!  Commonly this phenomenon is known as “Vampire” electronics.

So how much money will I be saving by utilizing my kill-a-watt and a trusty ol’ on/off power strip?

My work desk includes the following items:

  • speakers – 25 watts on
  • laptop – 20 watts on, 1 watt off
  • cable modem and wireless router – 25 watts on
  • Xbox – 90 watts on , 1 watts off
  • Monitor – 30 watts on, 1 watts off
  • Desk aggregate consumption during work hours (while not playing video games) – 100 watts
  • Desk aggregate (laptop, Xbox and monitor off) – 50 watts !

Summing up, I can see that for the 16 hours a day that I don’t use my desk, it’s still drawing 50 watts.  Over 1 year’s time this consumes $33.28 of electricity.  Call me a penny pincher but by using a power strip for the whole system, and spending the 2 seconds per day to turn the strip on and off I can squeeze out just a little bit of savings (making the equivalent of $230/hour… just to flip a switch on and off).

I can’t wait to find more ways to kill my watts!

Working from Home

Wednesday, December 10th, 2008

Having worked at home for the last 8 months or so I thought I’d give my top 10 reasons to work at home.

  • The daily commute is about as good as it gets.  From my bed to the kitchen (for coffee) to the office my total commute is about 50 steps.
  •  Really great coworkers.  My two dogs Tommy and Nelly are always there for moral support. Few coworkers will ever be as cheerful and carefree as two young black labs.
  •  I can wear fuzzy slippers and no one will give me a speech (or dirty look) about unprofessionalism.  For the record I have regular and not fuzzy slippers.
  •  Productivity.  It really has increased.  Without having to check on hundreds of emails, or attend hours of phone or in person meetings my productivity has drastically increased. It’s possible to increase productivity at the office by taking control of your schedule and placing limits on email checking … but it wont be easy…
  • The view.  I used to work in a semi-dungeon.  It would have been decades before I got a window.  Now I get plenty of sunshine throughout the day, and a tax break that goes along with the fact that it’s in my spare bedroom.
  • No politicking.  Being judged strictly on results is rare and refreshing.  Tommy and Nelly only know how to politic to see who gets to be pet first … also a plus.
  • Lunch with my wife.  I get to eat lunch with her just about everyday now for about 30 minutes.  I also don’t have to go out for lunch or pack a lunch anymore.  It’s surprising how much time/productivity/cost this saves/increases/decreases.
  • Ability to multitask with thinking and small chores at the same time.   A surprising amount of key insights in my work lately have been achieved while doing the dishes, plucking weeds or going to Vitamin Cottage.
  • Living locally, Living Green.  I can now walk almost everywhere that I need to go on a daily basis.  Freedom is not just the ability to “roam about the country”, but also the ability to stay exactly where you are.
  • Freedom.  As long as the bills are paid (i.e. the obligations of the contracts you work on) you really are free to work on the jobs you want to work on, the way you want to work on them, with the schedule that you desire (as long as it doesn’t negate the contract).  You are also free to choose your own insurance, your own vacation time (subject to paying your bills of course), your own equipment and most of your coworkers.  What’s better than working at home?  Working in that foreign country you’ve always wanted to live in but never had the cash or courage to do so.  What’s better than quitting your job?  Quitting a small portion of your job and finding another contract to replace it without suffering a monumental shortfall in income (make sure you have an escape clause in your contract!).

As an addendum to my list I would also like to point out that the number 1 reason most people do not work from home, or for themselves (as a contractor, consultant or entrepreneur) is fear: fear of failure and fear of the risk of unemployment or varied employment.

However, in the last 8 months since leaving Google two conclusions have been solidified for me:

  1. Mathematically you are far less likely to suffer a catastrophic loss with a diversified portfolio of income.  For example, working 4 contracts is far less likely to result in the loss of all 4 contracts at one time than working 1 full time job is to result in being laid off.  Self-employed diversified income is usually more variable, but long term it is far more dependable.
  2. In the United States all employment is ‘at will’, mostly meaning at the will of the employer.  You may leave your job any time you wish, but more importantly your employer may ask you to leave at any time.  When it suits the company they will have absolutely no loyalty to you no matter what you’ve done or how much time you’ve put in.

Here’s to freedom for the working class!

So you think you’re green? Try 10 ultra-green lifestyle changes

Tuesday, September 30th, 2008

So you already by organic food, use compact flourescent lightbulbs and drive a Toyota prius.  Well, I don’t want to be a green fundy here but the following is a list of things you might try to become an ultra-green environmentalist.  The following are some realistic and very environmentally friendly ways in which you can get back in touch with nature and help save the planet/whales/lots of cute and furry animals (including ourselves).  Each of these changes will not only help save the earth but will save you some serious green (i.e. cash).

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