Thermal balance: one of the objectives of the current regulations
superadmin
January 3, 2017
This article will analyze in depth how the ventilation system imposed by current regulations (the RITE and the CTE DB HE Energy Saving) influences the thermal balance of homes, as they aim to ensure proper ventilation while minimizing, in turn, energy loss.
Influence of regulations on the use of heat recovery systems to achieve thermal balance
According to article 15 of the CTE DB HE Energy Saving, a rational use of the energy necessary for the operation of buildings must be achieved, reducing their consumption to sustainable limits, and likewise ensuring that part of this consumption comes from renewable energy sources during its construction, use, and maintenance.The RITE, in article 11 of Chapter II, states that thermal installations must allow maintaining a tolerable indoor air quality in occupied spaces and eliminate pollutants that may arise as a result of normal use, providing an air flow from the outside and ensuring the extraction of stale air from the interior. In article 12 of the same chapter, it is indicated that thermal installations must be designed, calculated, executed, maintained, and used in a way that reduces energy consumption and, consequently, also greenhouse gas emissions and other atmospheric pollutants, thanks to the use of energy-efficient systems that allow energy recovery and the use of renewable energies and surplus energy. The following requirements must be met:
- Energy performance. All heating and cooling equipment must ensure that their performance, under any operating condition, approaches as closely as possible their maximum regime.
- Energy recovery. Thermal installations will have subsystems that allow for the use of surplus energy as well as its savings and recovery.
Purpose of heat recoverers
According to the publicly recognized and informative document of the RITE Energy Savings and Recovery in Air Conditioning Installations, heat recoverers from the extraction air in air conditioning systems allow maintaining adequate air quality without straining, energy-wise, the systems of hygrothermal adjustment of the air propelled to the rooms, since it utilizes the residual sensible and latent heat from the process itself. Thus, energy central costs (investment expenses) and operational energy consumption costs (operational expenses) are reduced.Application of heat recovery systems using double-flow VMC
Due to the increasingly airtight designs of homes, all technologies that allow improving the home's performance should be prioritized. VMC systems, through efficient ventilation that allows for energy recovery, provide excellent renewal of heat and a thermal balance, acoustic, and airy.Double-flow VMC systems ensure both the air quality of homes (by extracting stale air in humid rooms and supplying fresh air in dry ones) as well as recovering up to 95% of the energy from the expelled air, thanks to the core of the recoverer. We can talk about two systems:
- Preheating system. New air enters preheated in winter thanks to heat exchangers, so that when it's 5°C outside and 20°C inside, new air can enter at 19°C.
Siber Ventilation
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