Solar in Africa

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  • DanKegel
    Banned
    • Sep 2014
    • 2093

    #31
    Nothing wrong with setting energy efficiency standards, is there?

    Products save energy, save money, everybody's happy. No?

    Comment

    • solar pete
      Administrator
      • May 2014
      • 1816

      #32
      Originally posted by DanKegel
      Nothing wrong with setting energy efficiency standards, is there?

      Products save energy, save money, everybody's happy. No?
      Gotta love this thread.

      No, everybody is not happy, reason being there are those with shares in POCO's who want to maintain the Status Quo

      Comment

      • Sunking
        Solar Fanatic
        • Feb 2010
        • 23301

        #33
        Originally posted by DanKegel
        Nothing wrong with setting energy efficiency standards, is there?

        Products save energy, save money, everybody's happy. No?
        It does not take the government to do that. Nor can the government make any manufacture do it. What it takes is the demand of the consumer who is wiling to pay for it. If you build a better mouse trap, the world will beat a path to your door. That is how a free market works, has always worked, and will always work. No government has ever been able to change that or ever will. Governments tries, but always fails.
        MSEE, PE

        Comment

        • juju
          Junior Member
          • Mar 2015
          • 28

          #34
          My post has evolved into something else ....

          Comment

          • DanKegel
            Banned
            • Sep 2014
            • 2093

            #35
            Originally posted by Sunking
            It does not take the government to do that. Nor can the government make any manufacture do it.
            The government absolutely can make manufacturers do that, and has, many times.
            The US and state governments set efficiency standards for thousands of products.
            See http://www.appliance-standards.org for a pretty good view of these standards and their effects.

            People sometimes complain that energy efficiency standards increase the price of products, but that certainly hasn't been the case with e.g. refrigerators; see http://www.appliance-standards.org/s...ces_Report.pdf

            IMHO companies just need a little nudge to make their products more efficient. The prospect of losing access to the California, US, or European markets gets management's attention, and they have their engineers fix the problem in short order.

            Comment

            • DanKegel
              Banned
              • Sep 2014
              • 2093

              #36
              Originally posted by juju
              My post has evolved into something else ....
              Sorry about that. Maybe Sunking and I should take our disagreement elsewhere.

              Comment

              • Sunking
                Solar Fanatic
                • Feb 2010
                • 23301

                #37
                Originally posted by DanKegel
                Sorry about that. Maybe Sunking and I should take our disagreement elsewhere.
                OK you want a Nanny state and not capable of thinking for yourself. I get it.
                MSEE, PE

                Comment

                • Bala
                  Solar Fanatic
                  • Dec 2010
                  • 716

                  #38
                  Originally posted by juju
                  Agreed. That is why I am here. I am an early adopter. I am looking to find out if there are more efficient ways to manage the load requirement I stated. - using timers, maybe use DC type equipment in some cases, run some equipment during day time, change to LEDs e.t.c
                  for 9 years now i have,

                  been using timers to pump water during the day when i am not home,

                  i run some dc equipment, pump, lights, clock,

                  run some equipment during the day, washing machine, pump, workshop equipment,

                  use suitable light fittings, some leds.

                  you will find that anyone who understands off grid/battery power systems will have been doing all those things for a very long time.

                  Comment

                  • Sunking
                    Solar Fanatic
                    • Feb 2010
                    • 23301

                    #39
                    Originally posted by juju
                    Agreed. That is why I am here. I am an early adopter. I am looking to find out if there are more efficient ways to manage the load requirement I stated. - using timers, maybe use DC type equipment in some cases, run some equipment during day time, change to LEDs e.t.c
                    Add give up air conditioning, wall sized TV's, and electric hot water, heating, and cooking to that list.
                    MSEE, PE

                    Comment

                    • Bucho
                      Solar Fanatic
                      • Dec 2013
                      • 167

                      #40
                      Originally posted by Sunking
                      Add give up air conditioning, wall sized TV's, and electric hot water, heating, and cooking to that list.
                      You don't have to give up the wall sized TV, I've got a solution. LED projectors, you can get ones that do wall sized just fine and they work great so long as you only ever watch TV in the pitch dark.

                      Comment

                      • mschulz
                        Solar Fanatic
                        • Jan 2014
                        • 175

                        #41
                        Originally posted by Bucho
                        You don't have to give up the wall sized TV, I've got a solution. LED projectors, you can get ones that do wall sized just fine and they work great so long as you only ever watch TV in the pitch dark.
                        And you are right, you do not have to give up anything, you just need money to do it.

                        Comment

                        • Amy@altE
                          Solar Fanatic
                          • Nov 2014
                          • 1023

                          #42
                          Juju, can you give an example of how many kWh a "typical" home would use for that list you gave? For example, what is your electric kWh usage a month (or however you get your bill)? I understand your big requirement is not to go off-grid, but to provide electrical stability to deal with the frequent grid outages. As such, I believe a practical solution is to create a critical loads list, and determine what equipment must run when the grid is out, and what can turn off when the critical items are running off the battery. So simply changing the lifestyle to only running the washing machine when the grid is up, and reading a book via LED light instead of watching the big screen TV, or using your laptop instead of PC when the grid is down.

                          I have several customers in the Caribbean who are running mini split AC units on an off-grid solar system. Thermosyphon solar water heaters are cost effective way to replace your electric water heater in temperate climates such as yours. Replacing a 15 year old inefficient fridge with a new efficient one pays for itself almost immediately when going solar. As you said, a combination of equipment and lifestyle changes can be implemented to accomplish your hybrid solution.

                          Since your big requirement is battery backup, you are not able to compare your system with most of the USA or European systems, as they usually are simply grid-tied that turns off when the grid goes down, which doesn't help you at all.
                          Solar Queen
                          altE Store

                          Comment

                          • DanKegel
                            Banned
                            • Sep 2014
                            • 2093

                            #43
                            Yeah, seems like there are three categories:
                            1. LED lighting and other very efficient and low-power things that have to run at night
                            2. HVAC and other very energy-heavy things that don't have to run at night
                            3. Things you eventually want to run at night, but use too much power for your current solar system

                            Go through all your loads, measure them (perhaps with a kill-a-watt meter)
                            and assign them to one of those three categories, and price out a solar
                            system that can power #1 and #2, and a battery backup system to power #1.

                            If the HVAC draws too much power to run from the sun at all,
                            consider getting a single 30 SEER minisplit and putting just that
                            in category 2. Then even if you're out of diesel, you'll at least
                            have some AC.

                            Do you have a particular house in mind to try this out on already?

                            Comment

                            • Amy@altE
                              Solar Fanatic
                              • Nov 2014
                              • 1023

                              #44
                              Originally posted by DanKegel

                              Go through all your loads, measure them (perhaps with a kill-a-watt meter)
                              Last I checked, a Kill-a-watt meter only works on 120V 60Hz. Nigeria is 230V 50Hz. Efergy makes a European version. http://efergy.com/
                              Solar Queen
                              altE Store

                              Comment

                              • Bala
                                Solar Fanatic
                                • Dec 2010
                                • 716

                                #45
                                Originally posted by Amy@altE
                                Last I checked, a Kill-a-watt meter only works on 120V 60Hz. Nigeria is 230V 50Hz. Efergy makes a European version. http://efergy.com/
                                there a lot of meters avail for 220-250v 50hz,

                                i think mine was $25AUD

                                Comment

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