According to the latest data for the European Union as a whole, buildings are responsible for approximately 40% of total energy consumption and therefore the impact of any effort at reduction of said consumption is important.

Energy regulations in the building sector

The development of new standards and the revision of that in existence call for research work that is of great relevance for the governing bodies. AICIA has developed various research projects and consultancy works in this field, having achieved notable specialization in the area of power standards in the energy regulations the building sector:

Climatic Zoning

The climatic zoning used for limiting the energy demand of the technical building code

Development of Detailed, Simplified Methods of Building Certification

AICIA is developing calculation methods denominated as detailed because they follow exactly the methodology proposed by said decree. These methods need the hourly energy demand of the building and the simulation of the conditioning systems, also on an hourly base. Residential buildings and tertiary buildings (small and medium on one hand and large on the other) are considered separately, as well as new or existing buildings.

Climate Characterization Data to Estimate Consumption and Design

AICIA is developing works for climatic characterization of Spanish localities. The purpose of these works is to select, from those available, representative climatic data for the end pursued. Normally this is amongst the thermal installation design, for which extreme data are required, and the estimation of consumption in said installations, for which average data are necessary, representative of longer periods of at least 10 years.

Thermal Modelling of Traditional and Innovating Building Elements

The modelling of conventional elements of the building shell includes both opaque enclosures (walling, roofing, flooring, thermal bridges, etc.) and semitransparent (glazing-glass and frames-, skylights, etc.) The infinite possibilities, geometric and material, sometimes cause an apparently simple calculation of a thermal transmittance to become a specialized work.

Thermal Conditioning

AICIA is developing tools to simulate the thermal performance of thermal conditioning systems in buildings for different purposes, ranging from standard verification to the system design itself, including consumption estimation of the different energy sources used.

Determining Supply and Demand of Energy in Buildings

The calculation of energy demand in buildings is the first step towards determining energy consumption in thermal installations. Based on previous lines, AICIA has developed models to calculate demand on the base of season, month and hour with different levels of simplification, starting from extremely simple such as those based on the UNE-EN- 13790 norm. AICIA can also determine energy consumption of buildings in the following situations: From the demand and the seasonal performance of the thermal conditioning system, so long as there is no connection between the building and the system which only occurs when there is perfect control and the equipment is sufficiently powerful to satisfy demand.

Modification of Climatic Conditions

Estimation of the modification in exterior conditions that a building is subject to due to disturbances introduced by the urban environment.

Modelling of Comfort Conditions in External Areas

AICIA has shown that magnitudes such as incidental solar radiation, wind speed and proximity to cold or hot surfaces, as well as temperature and atmospheric humidity themselves, cause the problem of comfort conditions to be completely different to the conventional one, and thus should be dealt with great detail.

Thermal Conditioning Systems for Exteriors

Products and solutions of a technological nature are being developed on the level of control and communications systems and algorithms that permit active management of the energy demand. Said management allows us to generate, supply, and consume more efficiently, adjusting energy generation to the needs at each instant in large systems and in energy management in industry and homes.