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  3. A question of efficiency?

A question of efficiency?

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  • H HimanshuJoshi

    Z. Use cold water! It's summer anyways.

    T Offline
    T Offline
    Tech Code Freak
    wrote on last edited by
    #25

    :thumbsup::thumbsup: :laugh: :laugh: :laugh: :laugh: :laugh: :laugh: by the way, D........Who gives a s**t?

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    • C Chris Maunder

      Sounds very similar to the question of when you should add milk to your tea in order to ensure a hot cup of tea. See Newton's 5/4 Power Cooling Law.

      cheers, Chris Maunder The Code Project | Co-founder Microsoft C++ MVP

      B Offline
      B Offline
      Ben Breeg
      wrote on last edited by
      #26

      Chris Maunder wrote:

      See Newton's 5/4 Power Cooling Law.

      Nope, still no nearer :confused: But thanks all the same.

      I am the Breeg, goo goo g'joob Aici zace un om despre care nu sestie prea mult

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      • B Ben Breeg

        John Simmons / outlaw programmer wrote:

        I think taking a shower would be bette

        I've got four daughters who absolutely must have, without fail, at least 3 baths a week. Bloody teenagers! They can't shower (their words, not mine) because they can't get their hair wet unless they're washing it which they do separately. :doh: :confused:

        I am the Breeg, goo goo g'joob Aici zace un om despre care nu sestie prea mult

        L Offline
        L Offline
        Lost User
        wrote on last edited by
        #27

        Benjamin Breeg wrote:

        which they do separately

        As do I. 30C Hand Wash; 300 spin. :)

        Everybody is elitist to a certain extent; except me - I'm better than that. Micah

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        • B Ben Breeg

          So there I was, sitting in the bath contemplating the meaning of life when it occurred to me which is the more efficient? Let me elaborate. In our house, the hot water needs are served by an 'on demand' gas boiler. This boiler has a dial which allows setting the hot water temperature. This temperature adjustment is achieved by altering the volume of gas to the burners. The same temperature adjustment can be achieved by altering the flow of water through the taps. I.e, turn the tap down, the water gets hotter because of the water flow reduction. So, here comes the question: which is more economical and energy efficient to fill a bath? A. Turn the temperature up on the boiler (thus increasing the volume of gas burnt) but more water enters the bath so the boiler doesn't need to be on as long. B. Reduce the water temperature on the boiler (thus reducing the gas flow) and then reduce the flow of water at the tap so the water passes the burner slower and thus heats up more but takes longer to fill the bath and hence the burner is on longer albeit not burning as much gas per given moment in time. C. They are the same. D. Who gives a s**t. I'd be interested to hear any thoughts.

          I am the Breeg, goo goo g'joob Aici zace un om despre care nu sestie prea mult

          W Offline
          W Offline
          wizardzz
          wrote on last edited by
          #28

          I have a similar problem with brewing tea, only to have it chilled to a very cold temperature so I can enjoy it. I'll post the problem shortly.

          Craigslist Troll: litaly@comcast.net "I have a theory that the truth is never told during the nine-to-five hours. " — Hunter S. Thompson

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          • B Ben Breeg

            John Simmons / outlaw programmer wrote:

            I think taking a shower would be bette

            I've got four daughters who absolutely must have, without fail, at least 3 baths a week. Bloody teenagers! They can't shower (their words, not mine) because they can't get their hair wet unless they're washing it which they do separately. :doh: :confused:

            I am the Breeg, goo goo g'joob Aici zace un om despre care nu sestie prea mult

            D Offline
            D Offline
            Dan Neely
            wrote on last edited by
            #29

            If they're anything like my sisters were at that age, the baths use less water than a shower would; so stop complaining. :laugh:

            3x12=36 2x12=24 1x12=12 0x12=18

            1 Reply Last reply
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            • B Ben Breeg

              So there I was, sitting in the bath contemplating the meaning of life when it occurred to me which is the more efficient? Let me elaborate. In our house, the hot water needs are served by an 'on demand' gas boiler. This boiler has a dial which allows setting the hot water temperature. This temperature adjustment is achieved by altering the volume of gas to the burners. The same temperature adjustment can be achieved by altering the flow of water through the taps. I.e, turn the tap down, the water gets hotter because of the water flow reduction. So, here comes the question: which is more economical and energy efficient to fill a bath? A. Turn the temperature up on the boiler (thus increasing the volume of gas burnt) but more water enters the bath so the boiler doesn't need to be on as long. B. Reduce the water temperature on the boiler (thus reducing the gas flow) and then reduce the flow of water at the tap so the water passes the burner slower and thus heats up more but takes longer to fill the bath and hence the burner is on longer albeit not burning as much gas per given moment in time. C. They are the same. D. Who gives a s**t. I'd be interested to hear any thoughts.

              I am the Breeg, goo goo g'joob Aici zace un om despre care nu sestie prea mult

              A Offline
              A Offline
              AspDotNetDev
              wrote on last edited by
              #30

              Skinny dip at the nearest lake or, preferably, hot spring (true story: a guy actually got full on naked and used body wash to clean off in front of me and a friend at a hot spring).

              [

              S<T>::f(U) // Out of line.

              ](http://msdn.microsoft.com/en-us/library/8yk3t00s(v=vs.71).aspx)

              C D 2 Replies Last reply
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              • A AspDotNetDev

                Skinny dip at the nearest lake or, preferably, hot spring (true story: a guy actually got full on naked and used body wash to clean off in front of me and a friend at a hot spring).

                [

                S<T>::f(U) // Out of line.

                ](http://msdn.microsoft.com/en-us/library/8yk3t00s(v=vs.71).aspx)

                C Offline
                C Offline
                Chris Trelawny Ross
                wrote on last edited by
                #31

                And you stayed around to watch? :omg:

                A 1 Reply Last reply
                0
                • C Chris Trelawny Ross

                  And you stayed around to watch? :omg:

                  A Offline
                  A Offline
                  AspDotNetDev
                  wrote on last edited by
                  #32

                  Nope, I stayed to soak and avert my eyes.

                  [

                  S<T>::f(U) // Out of line.

                  ](http://msdn.microsoft.com/en-us/library/8yk3t00s(v=vs.71).aspx)

                  1 Reply Last reply
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                  • A AspDotNetDev

                    Skinny dip at the nearest lake or, preferably, hot spring (true story: a guy actually got full on naked and used body wash to clean off in front of me and a friend at a hot spring).

                    [

                    S<T>::f(U) // Out of line.

                    ](http://msdn.microsoft.com/en-us/library/8yk3t00s(v=vs.71).aspx)

                    D Offline
                    D Offline
                    Dan Neely
                    wrote on last edited by
                    #33

                    Euros are as casual about nudity/etc as Americans are about violence; those of us on both sides of the Atlantic are idiots for trying to think we can make the other go away by pretending it doesn't exist. :rolleyes:

                    3x12=36 2x12=24 1x12=12 0x12=18

                    A 1 Reply Last reply
                    0
                    • D Dan Neely

                      Euros are as casual about nudity/etc as Americans are about violence; those of us on both sides of the Atlantic are idiots for trying to think we can make the other go away by pretending it doesn't exist. :rolleyes:

                      3x12=36 2x12=24 1x12=12 0x12=18

                      A Offline
                      A Offline
                      AspDotNetDev
                      wrote on last edited by
                      #34

                      Me: *punches naked dude in the face* Naked Dude: Why'd you do that!? Me: I'm a violent American, you casually nude European! Yep, I can see how that would happen. :rolleyes:

                      [

                      S<T>::f(U) // Out of line.

                      ](http://msdn.microsoft.com/en-us/library/8yk3t00s(v=vs.71).aspx)

                      D 1 Reply Last reply
                      0
                      • A AspDotNetDev

                        Me: *punches naked dude in the face* Naked Dude: Why'd you do that!? Me: I'm a violent American, you casually nude European! Yep, I can see how that would happen. :rolleyes:

                        [

                        S<T>::f(U) // Out of line.

                        ](http://msdn.microsoft.com/en-us/library/8yk3t00s(v=vs.71).aspx)

                        D Offline
                        D Offline
                        Dan Neely
                        wrote on last edited by
                        #35

                        You'd better hope they decide it's cheaper to fine you his medical bills and deport you than to put you on trial because that defense would go over like a lead balloon. PS For some reason I never got a reply notice for this post....

                        3x12=36 2x12=24 1x12=12 0x12=18

                        A 1 Reply Last reply
                        0
                        • D Dan Neely

                          You'd better hope they decide it's cheaper to fine you his medical bills and deport you than to put you on trial because that defense would go over like a lead balloon. PS For some reason I never got a reply notice for this post....

                          3x12=36 2x12=24 1x12=12 0x12=18

                          A Offline
                          A Offline
                          AspDotNetDev
                          wrote on last edited by
                          #36

                          Dan Neely wrote:

                          deport you

                          They would deport me from the US to the US? :confused:

                          Dan Neely wrote:

                          For some reason I never got a reply notice for this post

                          Did you uncheck "Send me an e-mail if someone replies to this message" on your post?

                          [

                          S<T>::f(U) // Out of line.

                          ](http://msdn.microsoft.com/en-us/library/8yk3t00s(v=vs.71).aspx)

                          D 1 Reply Last reply
                          0
                          • A AspDotNetDev

                            Dan Neely wrote:

                            deport you

                            They would deport me from the US to the US? :confused:

                            Dan Neely wrote:

                            For some reason I never got a reply notice for this post

                            Did you uncheck "Send me an e-mail if someone replies to this message" on your post?

                            [

                            S<T>::f(U) // Out of line.

                            ](http://msdn.microsoft.com/en-us/library/8yk3t00s(v=vs.71).aspx)

                            D Offline
                            D Offline
                            Dan Neely
                            wrote on last edited by
                            #37

                            It was checked and I got a notice for this one on time, must've been hamstergremlins

                            3x12=36 2x12=24 1x12=12 0x12=18

                            1 Reply Last reply
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                            • B Ben Breeg

                              So there I was, sitting in the bath contemplating the meaning of life when it occurred to me which is the more efficient? Let me elaborate. In our house, the hot water needs are served by an 'on demand' gas boiler. This boiler has a dial which allows setting the hot water temperature. This temperature adjustment is achieved by altering the volume of gas to the burners. The same temperature adjustment can be achieved by altering the flow of water through the taps. I.e, turn the tap down, the water gets hotter because of the water flow reduction. So, here comes the question: which is more economical and energy efficient to fill a bath? A. Turn the temperature up on the boiler (thus increasing the volume of gas burnt) but more water enters the bath so the boiler doesn't need to be on as long. B. Reduce the water temperature on the boiler (thus reducing the gas flow) and then reduce the flow of water at the tap so the water passes the burner slower and thus heats up more but takes longer to fill the bath and hence the burner is on longer albeit not burning as much gas per given moment in time. C. They are the same. D. Who gives a s**t. I'd be interested to hear any thoughts.

                              I am the Breeg, goo goo g'joob Aici zace un om despre care nu sestie prea mult

                              P Offline
                              P Offline
                              PIEBALDconsult
                              wrote on last edited by
                              #38

                              Bathe with a hot friend. Two birds... yeah, two birds. :thumbsup:

                              1 Reply Last reply
                              0
                              • B Ben Breeg

                                OriginalGriff wrote:

                                The only way to be sure, is to check your meter, fill the bath to a marked depth, measure the temperature, and then repeat for each different variable.

                                Do you know what, that's a bloody good idea. See, I knew you guys would come up with the goods.

                                I am the Breeg, goo goo g'joob Aici zace un om despre care nu sestie prea mult

                                R Offline
                                R Offline
                                Rob Grainger
                                wrote on last edited by
                                #39

                                I think option E is the least efficient of all... E. Keep refilling bath to marked level varying parameters, ...

                                1 Reply Last reply
                                0
                                • B Ben Breeg

                                  So there I was, sitting in the bath contemplating the meaning of life when it occurred to me which is the more efficient? Let me elaborate. In our house, the hot water needs are served by an 'on demand' gas boiler. This boiler has a dial which allows setting the hot water temperature. This temperature adjustment is achieved by altering the volume of gas to the burners. The same temperature adjustment can be achieved by altering the flow of water through the taps. I.e, turn the tap down, the water gets hotter because of the water flow reduction. So, here comes the question: which is more economical and energy efficient to fill a bath? A. Turn the temperature up on the boiler (thus increasing the volume of gas burnt) but more water enters the bath so the boiler doesn't need to be on as long. B. Reduce the water temperature on the boiler (thus reducing the gas flow) and then reduce the flow of water at the tap so the water passes the burner slower and thus heats up more but takes longer to fill the bath and hence the burner is on longer albeit not burning as much gas per given moment in time. C. They are the same. D. Who gives a s**t. I'd be interested to hear any thoughts.

                                  I am the Breeg, goo goo g'joob Aici zace un om despre care nu sestie prea mult

                                  P Offline
                                  P Offline
                                  pgrmdave
                                  wrote on last edited by
                                  #40

                                  I'd imagine B is more efficient, as it would seem to me that for the same volume of gas you'd be able to extract more heat from it and into the water.

                                  1 Reply Last reply
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