23 research outputs found
A hőátbocsátási tĂ©nyezĹ‘k számĂtása egy fa bordavázas Ă©pĂĽlet esetĂ©n II.
2006. szeptember 1-én Hazánkban is életbe lépett az új
Ă©pĂĽletenergetikai szabályozás. A számĂtási eljárás során az
épület valamennyi külső és fűtetlen tértől elválasztó
szerkezetét külön-külön méretezni kell hőtechnikai szempontok
szerint. A térelhatároló szerkezetek hőátbocsátó képességének a
rendeletben elĹ‘Ărt határĂ©rtĂ©k alatt kell maradnia. A hőátbocsátĂł
képesség jellemzésére a hőátbocsátási tényezőt használjuk. A
hőátbocsátási tényező értékének meghatározását két, párhuzamosan
Ă©rvĂ©nyes szabvány Ărja elĹ‘. Az egyik az MSZ-04-140-2:1991, a
másik az EN ISO 6946. A magyar Ă©s az uniĂłs számĂtási mĂłdszer
eredmĂ©nyeit hasonlĂtjuk össze egy fa bordavázas,
könnyűszerkezetes épület külső térelhatároló szerkezetein
keresztül. Cikksorozatunk második részében a zárófödémet
vizsgáljuk.
Kulcsszavak: hőátbocsátási tényező, könnyűszerkezetes épületek,
szabványharmonizáció
From Global Economic Crisis to Armed Crisis: Changing Regional Inequalities in Ukraine
Despite the new geopolitical situation caused by the revolution at Maidan in February
2014, little is known about the real economics of Ukraine and its internal spatial disparities.
In the survey of regional disparities, data on incomes, employment and unemployment
were involved and completed by those on migration and age structure of the population.
The spectrum of available data at rayon level is not particularly broad, but this is
counterbalanced by the ca. five hundred territorial units that provide a minute picture of
the inequalities. According to the classic view, the spatial pattern of economic development
is opposite to the Central European west to east slope. In Ukraine, Eastern regions are not
more developed as a whole but they accommodate more developed large urban centres.
Spatial differences grew most rapidly during the period of economic decline (1990-2000).
However, these disparities were mitigated during the two years following the global
financial crisis as the latter mainly affected the large urban centres of the economy.
Conversely, the Donets Basin as a whole was highly exposed to the effects of these crises
owing to its outdated industrial structure (coal mining, iron and steel industry). This led to
a rearrangement in the ranking of the east Ukrainian regions based on GDP per capita:
Dnipropetrovs’k overtook Donets’k, and the Dnieper Region (including Zaporizhzhia) has
a higher output per capita than Donbas. A significant part of the productive capacities and
incomes are found in the Donbas, an area hit hard by the fighting; their loss would further
deteriorate the state of the country’s economy. The fighting in the Donbas that did by far
the greatest harm to the economy among the post-Soviet conflicts. It happened in a period
when Ukraine, after the transformation crisis, had been on the path of growth for more than
one decade. Concerning population number, area and economic weight, the Donbas
exceeds Transnistria or Karabakh by an order of magnitud
Exercise-mitigated sex-based differences in aging: From genetic alterations to heart performance
Recurrent landsliding of a high bank at Dunaszekcső, Hungary : Geodetic deformation monitoring and finite element modeling
Five years of geodetic monitoring data are processed to evaluate recurrent sliding at
Dunaszekcső, which are characteristic geomorphological processes affecting the high banks
of the Middle Danube valley in Hungary. The integrated geodetic observations provide
accurate three dimensional coordinate time series, and these data are used to calculate the
kinematic features of point movements and rigid body behavior of point blocks. Additional
datasets are borehole tiltmeter and hydrological recordings of the Danube and soil water
wells. These data, together with two dimensional final element analyses, are utilized to gain a
better understanding of the physical, soil mechanical background and stability features of the
high bank. Here we show that the main trigger of movements appears to be the changing
groundwater levels, which have an effect an order of magnitude higher than that of river water
level changes. Varying displacement rates of the sliding blocks are interpreted as having been
caused by basal pore water pressure changes originating from shear zone volume changes,
floods of the River Danube through later seepage and rain infiltration. Both data and modeling
point to the complex nature of bank sliding at Dunaszekcső. Some features imply that the
movements are rotational, some reveal slumping. By contrast, all available observational and
modeling data point to the retrogressive development of the high bank at Dunaszekcső.
Regarding mitigation, the detailed analysis of three basic parameters (the direction of
displacement vectors, tilting, and the acceleration component of the kinematic function) is
suggested because these parameters indicate the zone where the largest lateral displacements
can be expected and indicate the advent of the rapid movement phase of sliding that affect
high banks along the River Danube
A gĂ©pĂ©szeti rendszer hatása a kĂĽlönbözĹ‘ hĹ‘szigetelĂ©si teljesĂtmĂ©nyű könnyűszerkezetes Ă©pĂĽletek energiafelhasználására = The effect of the HVAC system on the energy consumption of various insulated lightframe buildings
A szerzők egy könnyűszerkezetes lakóházat vizsgáltak három különböző
hőszigeteltségi fokozattal és három különböző, fatüzelésen alapuló épületgépészeti
rendszerrel kiĂ©pĂtve. A vizsgálatok eredmĂ©nye hĂ©tköznapi ismeretekkel is
feltételezhető, hiszen mind a szigetelések vastagságának, mind az épületgépészeti
rendszer hatásfokának növelésével egyaránt csökkenthető az épület
energiafelhasználása. Tényleges értékekkel azonban elsőként mutathatjuk be, hogy
mekkora fogyasztáscsökkentést eredményez a komolyabb hőszigetelés, vagy egy
modern napkollektoros, hővisszanyerővel kombinált fűtési rendszer a
Magyarországon megvalĂłsĂthatĂł fa bordavázas Ă©pĂĽletek esetĂ©ben. A cikkben
bemutatott kilenc Ă©pĂĽlet mindegyike teljesĂti a 176/2008. (VI. 30.) Korm. rendelet
A+ energetikai besorolását, de a leggyengébb és a legjobb közötti több mint
kétszeres energiafelhasználási mutatóval. Az épületek a korszerű fa bordavázas
épületek energiafogyasztás-csökkentésének lehetséges fokozataiként
értelmezhetők.
=
The authors examined a wood frame house with three different insulation
thicknesses and three different HVAC (Heating, Ventillation and Air Conditioning)
system – all based on wood burning. The results are evident without prior
knowledge: the thicker the insulation, or the more effective the heating system, the
lower the energy consumption. This is the first attempt to quantify this effect with
scientific calculation for timber frame houses built in Hungary. The question was
how large is the energy saving using thicker insulation or the application of a high
end HVAC system with solar collector and heat exchanger. All 9 buildings presented
in this article meet the standards of the A+ category of the governmental order
176/2008. (VI. 30.), but comparing the worst to the best, the energy consumption
is more than double. These buildings show the steps of reducing the energy
consumption of modern timber frame houses