Grym
2016-08-27 00:02:48
- #1
Ok, now let's think about the topic practically. I deal a lot with KNX, but I just can't think of a scenario where KNX should help me. Here are our floor plans again:
According to the current planning status, roller shutters are to be installed everywhere (current planning status!). There will be a large sun sail that will protect the central window and the dining room window from the sun. The dining room windows facing east and the kitchen will be in the shade shortly after noon.
A heat pump with cooling function and a brine exchanger for the controlled residential ventilation system are planned. The simple logic functions like bypass for the controlled residential ventilation or regulating the underfloor heating based on outside temperature and return temperature can of course be handled by the respective devices themselves. When the sun hits the floor in winter, the return flow comes with a higher temperature and the heat pump notices that it needs to heat less because external heat input is present. The controlled residential ventilation recognizes when the bypass must be activated.
Individual room control makes no sense, at least that’s what everyone says in the pink forum. In any case, in our KFW55 construction it is probably very unnecessary. We also don’t need a night setback.
Energy saving functions don’t interest me because the investment costs are in any case higher than the electricity savings. There will be conventional smoke detectors and again, please no hysteria discussion here. There will be no gas, oil, or fireplace in the house. And if the house burns down in our absence, it is insured. There will be no photovoltaic system, and I am equally not interested in other extremes regarding electricity saving. The washing machine has its own timer. Usually, we just load it in the afternoon and hang the laundry up in the evening. It doesn’t have to run 3 hours at night just because there is a low-tariff period and we save 0.3 cents per wash cycle.
The living/dining/kitchen area will get 6 roller shutters and 4 dimmable lights. Three roller shutters and two lights each will be switched next to the living room door and next to the kitchen door. The switches are placed side by side following the motto: the far left is in the room also on that side, etc. So living area west, living area south and middle are next to the living room door; dining area south, dining area east and kitchen east are next to the kitchen door. For shading only the two roller shutters next to the living room are relevant (living room south, as it is not under the sun sail, and living room west).
At the moment, in the old building, we have internal blinds and also a large west front. Except for the 5 hottest days of the year, we do not shade completely. You just want not to be exposed to direct sunlight where you are currently sitting, working, playing, etc. Depending on the situation, this roller goes up and that one goes down, and so on...
A constant light control is not desired; even now, we switch lights by feel. When we want to go to bed soon, rather lights off or more distant light on (so basically a kind of indirect lighting). I have different light source preferences than my wife, and when we are together in the room, of course there is another compromise solution.
On the one hand, I have flexible working hours; on the other hand, I might sometimes sleep only 4 hours one night and then perhaps 7 hours again the next day. A control like dimming after xx o'clock doesn’t work for me.
There is also no defined TV lighting. That depends on the program. To quickly watch the news, all lighting can stay as it is. For a moderately interesting football game, only direct lighting is switched off, but indirect lighting can remain. For an episode of 'Game of Thrones' or a good movie, then please everything off, especially since there are often dark scenes. Sometimes, however, for example, we have the hallway light on as indirect lighting for the living area (which now also makes a separate hallway lighting with a motion detector unnecessary).
We would arrange hallway lighting so that next to each door there is a switch (two-way cross switch), which can turn the lighting of the respective floor on and off. So yes, exactly one switch next to each door. The two lamps on the upper floor then naturally turn on and off simultaneously. It is one floor switch. At the stair landing up/down there are exactly two switches each. The upper one for the upper floor, the lower one for the lower floor. So I can come from above, press both switches once, and have upstairs off and downstairs on. Or I turn the light off upstairs first at the bottom of the stairs (up off = upper switch; in my opinion totally logical).
Stair lighting could theoretically be controlled that way too, but well, there it’s partly about show effect, right? - So it could also be done with a timer or a motion detector. And if pets trigger the stair lighting, well then that’s just how it is. At the moment we have no pets either.
So, I have already described the roller shutter control for living/dining/kitchen. The way it works would be: short press for fully up/down and hold for exact setting. But one should not drive halfway because that causes temperature differences on the pane, which can damage it. So for example next to the living room door press three times briefly and the three roller shutters go up (or down). All other roller shutters (according to the same principle) are arranged next to the door likewise. Only for sleeping areas could I imagine a pushbutton/switch with timer function and then I would program nothing other than a raise time the next morning. I don’t need a close time. A short push button and the roller shutter closes. But if I set my alarm clock to 6:53, then I also set the roller shutter to 6:53 and I get woken up by daylight next to the alarm clock (in the future we will have joint wake-up times again and my wife will no longer do shift work). BUT: all this is conventionally realizable. Wonderfully simple even. So: study (guest room), bedroom and 2 children’s rooms get the pushbutton (short = completely up/down) which allows a raise time to be set.
Just briefly about the shading logic during the day: roller shutters go down in the morning when leaving the room/living area and stay down until the first person comes home in the afternoon. Thus bridging the first 10-12 hours of sun of the day.
There will be dimmable lights in many rooms, but I don’t want to stage expensive color orgies. The lamps should have little blue light and be good.
So, I think I have described the most important areas. Roller shutters, lighting, heating and a few other things...
How can an automation system like KNX help us now? What comfort gains are possible? What should we automate and why?
According to the current planning status, roller shutters are to be installed everywhere (current planning status!). There will be a large sun sail that will protect the central window and the dining room window from the sun. The dining room windows facing east and the kitchen will be in the shade shortly after noon.
A heat pump with cooling function and a brine exchanger for the controlled residential ventilation system are planned. The simple logic functions like bypass for the controlled residential ventilation or regulating the underfloor heating based on outside temperature and return temperature can of course be handled by the respective devices themselves. When the sun hits the floor in winter, the return flow comes with a higher temperature and the heat pump notices that it needs to heat less because external heat input is present. The controlled residential ventilation recognizes when the bypass must be activated.
Individual room control makes no sense, at least that’s what everyone says in the pink forum. In any case, in our KFW55 construction it is probably very unnecessary. We also don’t need a night setback.
Energy saving functions don’t interest me because the investment costs are in any case higher than the electricity savings. There will be conventional smoke detectors and again, please no hysteria discussion here. There will be no gas, oil, or fireplace in the house. And if the house burns down in our absence, it is insured. There will be no photovoltaic system, and I am equally not interested in other extremes regarding electricity saving. The washing machine has its own timer. Usually, we just load it in the afternoon and hang the laundry up in the evening. It doesn’t have to run 3 hours at night just because there is a low-tariff period and we save 0.3 cents per wash cycle.
The living/dining/kitchen area will get 6 roller shutters and 4 dimmable lights. Three roller shutters and two lights each will be switched next to the living room door and next to the kitchen door. The switches are placed side by side following the motto: the far left is in the room also on that side, etc. So living area west, living area south and middle are next to the living room door; dining area south, dining area east and kitchen east are next to the kitchen door. For shading only the two roller shutters next to the living room are relevant (living room south, as it is not under the sun sail, and living room west).
At the moment, in the old building, we have internal blinds and also a large west front. Except for the 5 hottest days of the year, we do not shade completely. You just want not to be exposed to direct sunlight where you are currently sitting, working, playing, etc. Depending on the situation, this roller goes up and that one goes down, and so on...
A constant light control is not desired; even now, we switch lights by feel. When we want to go to bed soon, rather lights off or more distant light on (so basically a kind of indirect lighting). I have different light source preferences than my wife, and when we are together in the room, of course there is another compromise solution.
On the one hand, I have flexible working hours; on the other hand, I might sometimes sleep only 4 hours one night and then perhaps 7 hours again the next day. A control like dimming after xx o'clock doesn’t work for me.
There is also no defined TV lighting. That depends on the program. To quickly watch the news, all lighting can stay as it is. For a moderately interesting football game, only direct lighting is switched off, but indirect lighting can remain. For an episode of 'Game of Thrones' or a good movie, then please everything off, especially since there are often dark scenes. Sometimes, however, for example, we have the hallway light on as indirect lighting for the living area (which now also makes a separate hallway lighting with a motion detector unnecessary).
We would arrange hallway lighting so that next to each door there is a switch (two-way cross switch), which can turn the lighting of the respective floor on and off. So yes, exactly one switch next to each door. The two lamps on the upper floor then naturally turn on and off simultaneously. It is one floor switch. At the stair landing up/down there are exactly two switches each. The upper one for the upper floor, the lower one for the lower floor. So I can come from above, press both switches once, and have upstairs off and downstairs on. Or I turn the light off upstairs first at the bottom of the stairs (up off = upper switch; in my opinion totally logical).
Stair lighting could theoretically be controlled that way too, but well, there it’s partly about show effect, right? - So it could also be done with a timer or a motion detector. And if pets trigger the stair lighting, well then that’s just how it is. At the moment we have no pets either.
So, I have already described the roller shutter control for living/dining/kitchen. The way it works would be: short press for fully up/down and hold for exact setting. But one should not drive halfway because that causes temperature differences on the pane, which can damage it. So for example next to the living room door press three times briefly and the three roller shutters go up (or down). All other roller shutters (according to the same principle) are arranged next to the door likewise. Only for sleeping areas could I imagine a pushbutton/switch with timer function and then I would program nothing other than a raise time the next morning. I don’t need a close time. A short push button and the roller shutter closes. But if I set my alarm clock to 6:53, then I also set the roller shutter to 6:53 and I get woken up by daylight next to the alarm clock (in the future we will have joint wake-up times again and my wife will no longer do shift work). BUT: all this is conventionally realizable. Wonderfully simple even. So: study (guest room), bedroom and 2 children’s rooms get the pushbutton (short = completely up/down) which allows a raise time to be set.
Just briefly about the shading logic during the day: roller shutters go down in the morning when leaving the room/living area and stay down until the first person comes home in the afternoon. Thus bridging the first 10-12 hours of sun of the day.
There will be dimmable lights in many rooms, but I don’t want to stage expensive color orgies. The lamps should have little blue light and be good.
So, I think I have described the most important areas. Roller shutters, lighting, heating and a few other things...
How can an automation system like KNX help us now? What comfort gains are possible? What should we automate and why?