Skip to content
  • Categories
  • Recent
  • Tags
  • Popular
  • World
  • Users
  • Groups
Skins
  • Light
  • Cerulean
  • Cosmo
  • Flatly
  • Journal
  • Litera
  • Lumen
  • Lux
  • Materia
  • Minty
  • Morph
  • Pulse
  • Sandstone
  • Simplex
  • Sketchy
  • Spacelab
  • United
  • Yeti
  • Zephyr
  • Dark
  • Cyborg
  • Darkly
  • Quartz
  • Slate
  • Solar
  • Superhero
  • Vapor

  • Default (No Skin)
  • No Skin
Collapse
Code Project
  1. Home
  2. The Lounge
  3. A question of efficiency?

A question of efficiency?

Scheduled Pinned Locked Moved The Lounge
questiondiscussion
40 Posts 23 Posters 0 Views 1 Watching
  • Oldest to Newest
  • Newest to Oldest
  • Most Votes
Reply
  • Reply as topic
Log in to reply
This topic has been deleted. Only users with topic management privileges can see it.
  • 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

    J Offline
    J Offline
    Joan M
    wrote on last edited by
    #18

    Bah! - You should put a small LHC under the bath tube... - Or using used "fried" oil as gasoline in order to be greener (even you go out from the bath you'll smell funny). - Of course the best option here would be to use the DutchTub[^]. Green people to me... bah! :rolleyes:

    [www.tamelectromecanica.com] Robots, CNC and PLC machines for grinding and polishing.

    B 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

      C Offline
      C Offline
      Chris Maunder
      wrote on last edited by
      #19

      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

      W B 2 Replies Last reply
      0
      • 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

        T Offline
        T Offline
        twohowlingdogs
        wrote on last edited by
        #20

        Benjamin Breeg wrote:

        they can't get their hair wet unless they're washing it which they do separately. :doh: :confused:

        That is the exact same excuse my ex-wife used as to why she didn't shower every day. I told her Bullsh!t! Then I talk to beuticians and they said you can get your hair wet (don't they walk in the rain or get in water fights?) even if you don't wash it! It's just an excuse to not shower every day. My daughter follows her mother in this nonsense. I guess at least they take a bath when they don't shower which is NOT what my ex did!

        If you know what I mean...and I think you do...

        1 Reply Last reply
        0
        • C Chris Meech

          What's a bath? :confused:

          Chris Meech I am Canadian. [heard in a local bar] In theory there is no difference between theory and practice. In practice there is. [Yogi Berra] posting about Crystal Reports here is like discussing gay marriage on a catholic church’s website.[Nishant Sivakumar]

          T Offline
          T Offline
          twohowlingdogs
          wrote on last edited by
          #21

          It's a method of cleaning the body in a container of water...but that's not important right now....

          If you know what I mean...and I think you do...

          1 Reply Last reply
          0
          • J Joan M

            Bah! - You should put a small LHC under the bath tube... - Or using used "fried" oil as gasoline in order to be greener (even you go out from the bath you'll smell funny). - Of course the best option here would be to use the DutchTub[^]. Green people to me... bah! :rolleyes:

            [www.tamelectromecanica.com] Robots, CNC and PLC machines for grinding and polishing.

            B Offline
            B Offline
            Ben Breeg
            wrote on last edited by
            #22

            Joan Murt wrote:

            Green people to me... bah! :rolleyes:

            Sod going green, I'm worried about my meagre pay packet paying for all the gas.

            Joan Murt wrote:

            Of course the best option here would be to use the DutchTub[^].

            Hmmm, I could finally find a use for the trees in the back garden which I've wanted to get rid of for years. :laugh:

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

            1 Reply Last reply
            0
            • 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

              W Offline
              W Offline
              wolfbinary
              wrote on last edited by
              #23

              Spoken like a true nerd. ;P :laugh:

              That's called seagull management (or sometimes pigeon management)... Fly in, flap your arms and squawk a lot, crap all over everything and fly out again... by _Damian S_

              1 Reply Last reply
              0
              • H HimanshuJoshi

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

                B Offline
                B Offline
                Ben Breeg
                wrote on last edited by
                #24

                HimanshuJoshi wrote:

                Use cold water! It's summer anyways.

                Not in England it isn't ;P It's usually freezing, even in summer. Though just to prove me wrong, we've just had the hottest April on record.

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

                1 Reply Last reply
                0
                • 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?

                  1 Reply Last reply
                  0
                  • 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

                    1 Reply Last reply
                    0
                    • 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

                      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

                        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

                        1 Reply Last reply
                        0
                        • 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
                          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

                            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
                            0
                            • 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
                                0
                                • 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
                                          0
                                          Reply
                                          • Reply as topic
                                          Log in to reply
                                          • Oldest to Newest
                                          • Newest to Oldest
                                          • Most Votes


                                          • Login

                                          • Don't have an account? Register

                                          • Login or register to search.
                                          • First post
                                            Last post
                                          0
                                          • Categories
                                          • Recent
                                          • Tags
                                          • Popular
                                          • World
                                          • Users
                                          • Groups