Hello,
here I would like to share some experiences and data regarding my brine heat pump and deep drilling, based in part on the expert’s "questionnaire":
a) What is the soil composition on your property?
Up to 3m (10 feet) silty, fine sandy, clayey soil
Up to 4m (13 feet) slope debris, rock fragments
Then bedrock (mainly limestone)
b) How deep was the drilling?
Drilled twice to a depth of 72m (236 feet)
c) How much did the drilling cost?
€10,400 including double U-probes DN25
Grouting material with 2.0 W/mK thermal conductivity
Permitting process (building permit / planning permission)
Pressure-tight house entry at the basement and underground routing of supply lines (about 25m (82 feet))
Filling/draining equipment, filling, pressure testing, etc. (all inclusive)
d) How much did the system cost?
System: Tecalor TTc 05 with heating output at B0/W35 of 5.8 kW and coefficient of performance (COP) of 4.8
Cost: €9,800
e) Were there any difficulties during installation, if so, what kind?
Because the water used to flush out the drilled material during drilling seeped away, a "small compressor" was needed to blow it out with air. However, it had to be placed on a neighbor’s property who had not yet started building. The machine was the size and approximate weight of a 20-ton truck but was off-road capable. This caused a 2-day delay because the compressor first had to be transported to our site. No additional costs were charged.
f) How is the daily operation?
"Like a refrigerator." Once the parameters on the heating system are correctly set, the only thing that should be done is occasionally reading the information/data such as operating hours and source temperature. Otherwise, it runs "on its own," just like any heating system. When the door is closed, the unit is virtually inaudible. Very discreet since, apart from the cabinet in the utility room, nothing else is visible (all brine pipes are underground).
e) What are the operating costs for which living area?
Currently, a living area of 180sqm (1937 sqft) is heated, plus an additional 65sqm (700 sqft) of cellar space within the insulated thermal envelope (these rooms are around 15-16°C (59-61°F) on the coldest days). From September 2014 to September 2015, 2,000 kWh of electricity was consumed for heating and hot water (2 adults, 1 baby, 1 toddler). The house is a KfW-70 standard building according to the 2009 energy saving regulations, which already met the required technical standards before the central ventilation system with enthalpy heat exchanger was installed (we decided to add this after the initial applications).
f) to be continued ....
Note regarding the comparison of the coefficient of performance (COP):
Since optimizing the heating curve and settings at the end of last year, the system has had a COP of about 5.5. Operating hours are around 1200; the deep borehole was drilled approximately 20% deeper than initially recommended by the companies, at our own request.
here I would like to share some experiences and data regarding my brine heat pump and deep drilling, based in part on the expert’s "questionnaire":
a) What is the soil composition on your property?
Up to 3m (10 feet) silty, fine sandy, clayey soil
Up to 4m (13 feet) slope debris, rock fragments
Then bedrock (mainly limestone)
b) How deep was the drilling?
Drilled twice to a depth of 72m (236 feet)
c) How much did the drilling cost?
€10,400 including double U-probes DN25
Grouting material with 2.0 W/mK thermal conductivity
Permitting process (building permit / planning permission)
Pressure-tight house entry at the basement and underground routing of supply lines (about 25m (82 feet))
Filling/draining equipment, filling, pressure testing, etc. (all inclusive)
d) How much did the system cost?
System: Tecalor TTc 05 with heating output at B0/W35 of 5.8 kW and coefficient of performance (COP) of 4.8
Cost: €9,800
e) Were there any difficulties during installation, if so, what kind?
Because the water used to flush out the drilled material during drilling seeped away, a "small compressor" was needed to blow it out with air. However, it had to be placed on a neighbor’s property who had not yet started building. The machine was the size and approximate weight of a 20-ton truck but was off-road capable. This caused a 2-day delay because the compressor first had to be transported to our site. No additional costs were charged.
f) How is the daily operation?
"Like a refrigerator." Once the parameters on the heating system are correctly set, the only thing that should be done is occasionally reading the information/data such as operating hours and source temperature. Otherwise, it runs "on its own," just like any heating system. When the door is closed, the unit is virtually inaudible. Very discreet since, apart from the cabinet in the utility room, nothing else is visible (all brine pipes are underground).
e) What are the operating costs for which living area?
Currently, a living area of 180sqm (1937 sqft) is heated, plus an additional 65sqm (700 sqft) of cellar space within the insulated thermal envelope (these rooms are around 15-16°C (59-61°F) on the coldest days). From September 2014 to September 2015, 2,000 kWh of electricity was consumed for heating and hot water (2 adults, 1 baby, 1 toddler). The house is a KfW-70 standard building according to the 2009 energy saving regulations, which already met the required technical standards before the central ventilation system with enthalpy heat exchanger was installed (we decided to add this after the initial applications).
f) to be continued ....
Note regarding the comparison of the coefficient of performance (COP):
Since optimizing the heating curve and settings at the end of last year, the system has had a COP of about 5.5. Operating hours are around 1200; the deep borehole was drilled approximately 20% deeper than initially recommended by the companies, at our own request.
annab377 schrieb:
To all supporters of venetian blinds: fortunately, everyone can still decide for themselves
Personally, I feel that venetian blinds create an office or commercial atmosphere (or even a prison-like feeling).
It’s really a matter of taste.I don’t like them either. We are going with roller shutters. Possibly—but only possibly—we might put a venetian blind on the 3.5 m (11.5 ft) lift-and-slide door.
annab377 schrieb:
To all the advocates of external venetian blinds: luckily, everyone can still decide for themselves
Personally, I think external venetian blinds create an office or commercial atmosphere (or even a prison-like feeling).
Tastes are just different.
This really shows how varied tastes can be. I can hardly wait to spend my first summer in the house. Currently, we only have roller shutters in our condominium. At the moment, I feel like a caveman.
In the house, we will have KNX-controlled external venetian blinds.
For example, I personally find half-open slats much nicer than roller shutter slits.
To each their own.
Venetian blinds have advantages and disadvantages that roller blinds do not—and vice versa: price, susceptibility to wind, dirt accumulation, maintenance effort, brightness and atmosphere in the room (cave-like or commercial feel), insulation factor in winter, and so on.
But unless you’re working from home (due to COVID-19 or otherwise), most of the time during nice summer weather you’re probably outside anyway— in the garden, by the lake, on vacation with your dog, children, family, or whatever. So, you actually spend the least amount of time as a cave person or office worker inside your own house.
@Woogl thanks for your reports.
The dew point monitor only costs about 330 EUR. Why did you decide against it? It definitely would have been the safer choice. Considering the low cost, I wouldn’t even think about leaving it out right now—before you really ignore the dew point for whatever reason.
Venetian blinds have advantages and disadvantages that roller blinds do not—and vice versa: price, susceptibility to wind, dirt accumulation, maintenance effort, brightness and atmosphere in the room (cave-like or commercial feel), insulation factor in winter, and so on.
But unless you’re working from home (due to COVID-19 or otherwise), most of the time during nice summer weather you’re probably outside anyway— in the garden, by the lake, on vacation with your dog, children, family, or whatever. So, you actually spend the least amount of time as a cave person or office worker inside your own house.
@Woogl thanks for your reports.
The dew point monitor only costs about 330 EUR. Why did you decide against it? It definitely would have been the safer choice. Considering the low cost, I wouldn’t even think about leaving it out right now—before you really ignore the dew point for whatever reason.
N
neo-sciliar27 Aug 2020 13:58pagoni2020 schrieb:
.....cheers to automation–.
In our case, exactly the same position as @guckuck2. A glass-covered terrace AND external blinds, both retrofitted after years, were the best decisions!!! For the new house, there will be discussions about everything except this!What are your experiences with covered terraces (we are still deciding between glass or something darker) with external blinds? Are the blinds installed directly on the window? I’m considering moving them to the edge of the terrace to make the terrace feel more like a “room.” (yes, I know that’s a bit unusual).......P
pagoni202027 Aug 2020 14:05neo-sciliar schrieb:
What are your experiences with a covered terrace (we are still deciding between glass or a darker option) with external blinds? Are the blinds installed directly on the window? I’m considering moving them to the edge of the terrace to make the terrace feel more like an actual room.In my opinion, one of the best ideas I implemented back then. You can sit outside in the rain, the glass prevents dew from settling on furniture and cushions at night, and it feels like an outdoor living room. We will do it the same way again with glass and shading underneath. We have external blinds independently installed on the windows.
Sometimes rain can come in from the sides, so the roof should not be too narrow.
Otherwise, it’s an absolute: YES to the glass roof!
N
neo-sciliar27 Aug 2020 14:13pagoni2020 schrieb:
In my opinion, one of the best ideas I implemented back then. You can sit outside in the rain, the glass prevents dew from settling on furniture and cushions at night, and it feels like an outdoor living room.
We will do it the same way again with glass and shading underneath. We have venetian blinds on the windows regardless.
Sometimes a little rain can come in from the side, so the roof shouldn't be too narrow.
Otherwise, it’s an absolute: YES to the glass roof! Wouldn’t an opaque roof prevent dew? :-o
We will simply extend the roof further, so that there is still the usual roof overhang on the sides. In addition, the outer walls will be extended 1 meter (3 feet) high around the terrace as a balustrade (only for the look, of course uninsulated).
I’m considering whether the shading (venetian blinds) should be installed directly on the windows or possibly on the terrace’s outer frame... The effect inside the house is the same, as the sun is kept outside, but the effect on the terrace differs.
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