Geothermal heating a country house - are investigated in detail

productive heating system in a country house design should be implemented in such a way that it is cost-effective, but at the same time easy-to-performance and technologically modern.Standard solutions in which heat is produced as a result of fuel combustion, are costly for the owner of the house, the cause of this is the constant increase in the cost of electricity and gas.In addition, the traditional ways of premises heating a negative impact on the environment, for example, about 40% of carbon dioxide emissions into the atmosphere is formed by the production of heat, this level of negative impact on the environment in the digital indicator is combined with the negative impact caused to exhaust vehicles.As part of this question is pressing a new system of geothermal heating facilities.

search for innovative solutions in the field of space heating began in the 70s.the last century, during the energy crisis.Initially, this technology was tested in the US, mostly in high-end areas.But thanks to advances in technology, the cost of production has gradually decreased, so this kind of home heating has now become available to the mass consumer.In addition, as shown by many years of experience in the use of geothermal heating systems - such a structure differs longevity and profitability, so the consumer demand for the installation of this type of systems has been steadily increasing.

positive and negative points in the installation of geothermal heating system in a country house.

Development of new technologies contributed to the fact that virtually every home owner now has the ability to accumulate the energy of the earth, establishing a geothermal heating system in the private sector.The soil accumulates to 98% of the solar energy that falls on the surface, so that even in winter in earthen reservoir retained enough heat to heat a residential building, only the installation of special equipment is required in order to take advantage of the accumulated solar energy.After installing a geothermal heating system, spent on the installation of the means to pay off an average of 5-8 years - it is the negative side of this technology.The cost of the project may cause doubts among those who planned the installation of low-cost system, but in a country house of the owner plans capital expenditures not included.

positive side of the system is its availability, since there is the possibility of widespread use of this type of energy and its absolute ecological compatibility and harmlessness to humans.The amount of energy is unlimited, and the operating system and very low maintenance costs.Geothermal energy is not worth the cost of funds, however, requires investments the energy that is involved for the operation of the heat pump.For three to five kilowatts of heat necessary to spend one kilowatt of energy.Taking into account that while the pump is no combustion process, the system is absolutely safe, the risk of fire or explosion, as is the case with no gas heating system.premises equipment different exhaust systems and chimneys, the system takes up very little space in the room.Also, do not need special facilities or additional space for fuel storage.And thanks to the versatility of the system can not only heat the dwelling in winter, and cool it in the summer months.With proper installation of the system, it can operate for about 30 years with no maintenance required, while other systems require service attention much more often.

Features of the geothermal heating system.

The principle of geothermal equipment can be compared with the air conditioner or the work, or the freezer, but "on the contrary".The design is based on a heat pump, the size of which is approximately equal to the dimensions of the washing machine, pump included in the 2 circuits.

first loop is a visible system of radiators and pipes, the second circuit of the heat exchanger, which is placed under the ground or water.Circulate within the circuit can be either a special fluid or plain water.In the second fluid circuit acquires the temperature of the surrounding space, and then the coolant gets into the heat pump, which can be set up and to cool the room, and its heating.Heat generated by the pump, for heating enters the first circuit in the second cooling.

the example of the refrigerator "in reverse" analogy can be drawn by comparing dug into the ground evaporator freezer and refrigerator coils - a capacitor, which is used to heat air or water.Temperature below ambient design, due to the fact that under the ground is stable low temperature.

production of heat pumps (the main elements of geothermal systems) in industrial scale was made possible by the development of refrigerating machine technology that allowed us to develop a unique method for the transformation of the earth into heat energy for space heating.

principles circuit device.

Carry out only the site owner forces the system difficult, as close to the building you need to design a structure consisting of a closed pipe system, which is placed at a considerable depth into the ground, which sometimes reaches more than a few hundred meters.type heat exchanger design and dimensions of the collector depends on several parameters, among which the main warm-water and soil depth.

are three circuits of the geothermal heating system equipment, ie the outer contour of the device for energy storage.

1. most optimum vertical heat exchanger is a device with a pump.To implement such a scheme requires special equipment and substantial financial investments to drill a well that is located under the ground at between 50 and 200 meters depth.In this case, the heat deep seated groundwater with high temperature.The water passes through the heat pump through a heat exchanger where it gives its heat, and then discharged back into the ground water downstream.The costs in the process installation justified result as well operation period is 100 s.
2. like the previous one and is quite costly scheme of arrangement in a mine depth of 75-100 m. The special tank with antifreeze, which is heated by the ground temperature, after which the heat pump antifreeze rides around.After the return of heat discharged into the antifreeze tank underground.
3. The simpler the design of the horizontal heat exchanger circuit, in which the underground pipes are arranged in such a way.That they were below the level of soil freezing in winter.The downside of this scheme is the need to operate under a large area collector.For example, a small house in an area of ​​200 sq.m.We need to occupy an area of ​​500 sq.m.Location pipes to do so, to the nearest tree has not less than 1.5 meters.
4. Next scheme is applicable in the case, if a country house is located no further than 100 meters from the reservoir.It is quite cheap, for the implementation of the project does not require excavation, placement of the heat exchanger must be done in such a way that the depth was not enough for frost, under the ice in winter should be no less than 1-1.5 meters of water to the top of the probe point.Preferably, the flow in the reservoir was not, on its bottom lay horizontal probes that absorb heat.Such a scheme may make the owner of a country house on their own.

Assembling an external circuit comes from polyethylene pipes, according to preliminary calculations, the ratio of 40-50 watts of thermal energy should account for 1 meter of collector.Accordingly, if the pump output is 10 kW, the length of the well should be approximately 160-200 meters.In some cases more profitable to drill several shallow wells instead of one large, in order to finally obtain the desired projected depth.In order to keep the area landscape designers use cluster technology with which the drilling of wells in different directions from a single point.

In conclusion, the article included a video with a specific example.

Video - geothermal pumps

purpose of this article was to review the positive and negative aspects of the geothermal heating system, which is a successful alternative to the already traditional methods of heating a country house.