However, when simulating complex models over extended periods this procedure becomes very time consuming and computationally demanding.

This algorithm was tested and validated against multiple tests suites. To analyse energy and peak load benefits from PCMs a significant number of commercial building energy simulation programs such as CoDyBa, EnergyPlus, ESP-r, and TRNSYS were used.Д®nergyPlus PCM algorithm uses a one-dimensional conduction finite difference solution algorithm (CondFD). Thermal energy storage based on the latent heat of phase change material has attracted attention of researchers and engineers in different fields, and a considerable number of numerical researches on PCMs have attempted to estimate potential energy savings through building energy simulation. Building materials with incorporated PCM are meant to increase heat storage capacity and enable stabilization of building interior surface temperature, whereby influencing the thermal comfort sensation and the stabilization of the interior ambient temperatures. Innovations attributable to nanotechnology also enable thermally insulating buildings in which a conventional insulation is not possible (e.g., in older buildings with structured facade) and thereby achieve very good insulation values, for example, aerogels, phase change materials (PCMs), and vacuum insulation panels.ДЄ PCM is a substance that changes from one state of matter to another at a certain temperature and represents a technology that may reduce peak loads and HVAC energy consumption in buildings. However, the energy efficiency of buildings is today a prime objective for energy policy at regional, national, and international levels. In the past, energy consumption has increased steadily. One of the greatest challenges in the construction sector is the thermal renovation of existing buildings and applying new insulation materials based on nanotechnology could make an important contribution. This paper presents the application of nanotechnology, in the construction process, to improve the building energy efficiency. Nanotechnology in the construction industry is currently concentrated in the following sectors: (i) cement-bound construction materials, (ii) noise reduction and thermal insulation or temperature regulation, (iii) surface coatings to improve the functionality of various materials, (iv) fire protection. Often, the term вЂњnanoвЂќ merely refers to structures in the nanosize range. On the construction industry not all products that feature the term вЂњnanoвЂќ actually contain nanomaterials.

These novel materials with very good insulation values are already available on the market, enable a thermal rehabilitation of buildings in which conventional insulation is not possible, and can help to improve energy efficiency.

Nanotechnology and nanoproducts offer interesting new opportunities in many civil engineering areas and architecture including design and construction processes, such as the development of novel insulation materials. This paper presents a numerical and sensitivity analysis of the enthalpy and melting temperature effect on the inside building comfort sensation potential of the plastering PCM. The potential of advanced simulation tools to evaluate and optimize the usage of PCM in the control of indoor temperature, allowing for an improvement in the comfort conditions and/or in the cooling energy demand, was explored.

Building components with incorporated phase change materials (PCMs) meant to increase heat storage capacity and enable stabilization of interior buildings surface temperatures, whereby influencing the thermal comfort sensation and the stabilization of the interior ambient temperatures.

Trnsys simulation of pcm