THERMOMODERNISATION FUNDS

Thermomodernisation is a process which aims at reducing usage of thermal energy by buildings. The energy used on heating constitutes the biggest contribution to the overall buildings energy usage, which in 2005 it was at 70% [36]. Certain experts insist that it is possible to reduce the energy usage by 35-40% [37]. That fact makes the thermomodernisation one of the best tools in energy conservation.

The most important value in thermomodernisation is heat transfer coefficient h. Each divider (wall, window etc.) has its own h and it is used to calculate the heat transfer within that divider. Lesser h coefficient means better insulation and following on that lesser energy consumption.

where: q - heat flow, J/s = W

A - heat transfer surface area, m2

?T - difference in temperature between the two areas divided by the divider, K

To present a potential of thermomodernisation, table 5 shows normative h coefficients for different dividers over a span of 50 years in Poland. As can be seen the average h values in 2008 were approximately four times lower than before 1974. This verifies the fact that thermomodernisation is a key element in energy conservation.

  • TABLE 5: HEAT TRANSFER COEFFICIENT VLUES FOR DIVIDERS IN DIFFERENT YEARS BASED ON [38]
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