Pic Of A Black Seven Inch Dick

to geothermal boreholes Baskets / An alternative

The primary energy source has long been the geothermal heat is used. This seems to be an ecologically and economically sound solution. To obtain the most geothermal boreholes are used. Even in an object designed by us, we wanted to resort to such a heat source. Accordingly, we have several preliminary inquiries with the relevant authorities took. It turned out that our parcel is located in a water protection zone, as our land is near the shore of Lake Zurich. So there is a possibility that we will encounter groundwater. If this is the case, the hole will be broken, and we must find an alternative to the boreholes. So what are the alternatives? Our first thought was to switch to natural gas as our land is already developed accordingly. The client wanted to achieve but the Minergy standard and find an ecological solution.
This was the starting point for finding a real alternative. Accordingly, I was looking for another option, the geothermal energy use, and I came across the geothermal baskets. These are relatively new and not widespread in Switzerland. I, too, these baskets are new. So I try in the following sections to learn how they work? What is the difference to the geothermal probes? And if this is a real alternative in our specific case.


function of Erdwärmkörbe

Each basket consists of a geothermal heat about 50 m long, spiral-wound polyethylene pipe, which is UV resistant and frost resistant. This tube is applied to a basket-shaped scaffold. In the pipe circulates a heat transfer fluid and absorbs the heat of the surrounding earth. The cold heat transfer fluid flows in the outer spiral tube of the basket down to the ground to escape the maximum amount of heat, and then rises in the inner tube in the middle of the basket back up, to prevent cooling. Using a heat exchanger is the heat transfer fluid transfers its heat energy to the working medium of the heat pump, which in turn supplies the heating system with hot water.
The top of the geothermal basket comes to lie at a depth of 1.5 m, so that the heat is in the basket of frost-free zone of the soil. The geothermal baskets are therefore introduced at a depth of 1.5 to 3 m into the ground and are thus unaffected by the daily temperature fluctuations. In addition, do not run the seasonal variations in temperature at this depth in sync with the surface temperature. In this zone, the temperature of the earth in November, the highest (about 13 ° C), ie at the beginning of the heating season, and is deepest at the beginning of the summer (about 7 ° C) when the heater no longer needed or the system may be used for cooling. Because geothermal heat escape
basket plants the soil heat energy, lowers its temperature during the heating season. In the summer months must be adjusted so a new thermal equilibrium. Due to the shallow geothermal baskets regeneration of the soil mainly by solar radiation and the seepage of rain water is possible.
a distance of 4 m between the geothermal baskets is maintained to ensure optimal function the system be guaranteed.
For the installation of geothermal baskets with a shovel dug a trench of 60 cm width and a depth of less than 1 meter. Thereafter, a first hole is dug to a depth of 3.5 m and it installed a geothermal basket, lie about 1.5 m below the upper edge of the earth's surface is. The hole is then filled with excavated material which is yielded by the excavation, or sand, where the quality of the excavated material is insufficient. At a distance of 4 m another hole is dug, into which the next geothermal cage is installed. Experience has shown that optimal geothermal, three baskets are connected in series with each other and the individual groups should be aligned in parallel. If the geothermal baskets are inserted in the ground, they are interconnected and connected to the heat pump (distribution = cold side and the collector = hot side).

comparison geothermal baskets and boreholes

geothermal baskets

+ have a low installation height and are OK about 1.5m below ground

= behavior for a single family home to geothermal probes cost neutral

- Needs more space in terms of area. Compared with horizontal ground collectors is the gain in area but about 40%

- must be the basis of the geothermal baskets at least 2m above the highest water tables are

- There are in Switzerland, no approval process for such plants.

- In Switzerland, hardly used. It lacks experience

+ Can also be installed in the water protection zone

+ relative konstanteTemperatur throughout the year

Erdwärmesonden

- drilling to a depth of 150m - 400m. Depending on power demand
= behavior for a single family home to geothermal probes cost neutral
+ Does area the little room
- If encountered during drilling on groundwater that is, the bore will be canceled.
+ authorization procedures are in place


Resume

based on our project, the geothermal baskets a real alternative. The primary advantage is the low installation depth. In our case this is not helping to push into ground water, or more than 2m are to be above the highest water table. This has been the investigations of geologists shown and are included in his report. Thus, the installation also possible in the groundwater protection zone. From the functional principle, the geothermal loop geothermal heat and the fact hardly different baskets. The need area for the installation of geothermal baskets we have in our property. The only problem is the license for this type of geothermal energy. In our District, as already mentioned, no such authorization procedures are in place. But we are met with the competent authorities in contact and discuss the problem and hope to be allowed to use the geothermal baskets. For our client so we could cost-neutral and environmentally friendly alternative to offer the boreholes.


sources

www.geothermie.ch
www.effiziente-waermepumpe.ch/wiki
www.wikipedia.org
www.empa-ren.ch/Geothermie


geothermal project manual racks / author and co-authors Simone Bassetti, Ernst Rohner
on behalf of the Federal Office of Energy

HSZ-T I A06A I House Technology I Rico Bänziger

Can I Go On A Cruise With A Group If I'm Not 21

understeer, oversteer

Challenge: humane control.

great effort, we realize complex home automation systems. Technology is in vogue! We believe in quality of life and ease our conscience towards the environment. The temptation is great, one can hardly resist her: Automation! The systems will, without our intervention, to adapt to our behavior. We are free! But if you look closely, we create another "technical" state of which we depend.

The systems are complex, it requires an increased control effort. Technically, today control almost any wish can be fulfilled. From simple circuits to computer-driven programs with the involvement of several parameters. But which control for whom? Maybe that would have the pleasure of a fully automated computer system - the majority of people that could hardly do something.

following situation we have discussed recently in the office in a small schoolhouse with four class units for mentally disabled young people, are controlled for ventilation and night cooling in summer motorized window sash. In a bigger school you control such a system usually centrally via a networked computer with the system supplier. For a small school building such a system is too expensive and too complex to operate.

For our small school therefore a significant one for economic reasons is already clear. The system must be via electronic switches (bus system) is controlled. To meet the requirements, parameters must be set with priorities be. These parameters arise from the energy requirements (heat loss), weather-related requirements (rain, storm) and the user-specific needs (teachers, students), the latter occupies a special position because it engages in the direct daily life.

in dealings with the user-specific needs, two opposite attitudes. One possibility would be to install in any room Co2 sensors that trigger after a certain amount of CO2 in the air, a shock ventilation. For the indoor air quality that is certainly the best solution, but one which time uncoordinated Open middle of the class has a disturbing, perceptive sensitive especially for young people. Another possibility is the time-coordinated air, triggering the opening of the wings at the end of the lesson. The result is a rhythm, similar to the break ring. The sudden opening of the air wing become such a taken for granted in everyday life.

If we set this requirement as the basic parameters provides our switching system as follows:

basic parameters: coordination, periodic timer to blow air through school hours based.

side parameters I: technical improvements to the energy (heat loss in winter) will prevent airing in unoccupied rooms by Co2 sensor.

side parameters II: night cooling controlled with appropriate outdoor temperature control with outside temperature sensor and timer.

side parameters III: End of the night cooling as it reaches a certain internal temperature using internal temperature sensor or in bad weather and weather station.

I think we were able to achieve the needs of such control, which stops a day to understand the logic.

The control and operation of the home technology requires extremely careful planning. For it is precisely the operation of these things that unconsciously every day strong, usually intervenes in the lives of the residents. Above all, we (future) Architects are required in this topic. Only we know the needs of the client in such an extent that it requires the development of such controls. The conscious use of the control we need to learn.

Jonas Wirth, students HSZ-T, A06

Link:

WindowMaster

Werkschule