English

The balance between thermal comfort and air quality in healthcare facilities to optimize the Indoor Air Quality (IAQ) is the main aim of this paper. The present paper will present this balance from the viewpoint of the air conditioning design. It was found that the design of the HVAC airside systems plays an important role for achieving the optimum air quality beside the optimum comfort level. This paper highlights the importance of the proper airside design on the IAQ.

Commissioning plays an essential role for ensuring the quality of any HVAC system. Without detailed commissioning procedures, important deviations from design specifications may exist and not be detected, reducing the system performance and increasing operational costs. This paper describes the measurements performed during commissioning of a HVAC system for a swimming pool delivered as ready by a contractor, showing important deviations that needed correction.

EECCAC is an EU funded project, where twelve participants (National Energy Agencies, Manufacturers, University laboratories and Electric utilities) from eight countries gathered to identify the most suitable measures to achieve market transformation in the direction of energy efficiency of central air conditioning systems in Europe. Its basement was the Eurovent manufacturers wish to develop a seasonal performance index for chillers in Europe, so as to compare their performances not only on full load, which is not representative of chiller average performances, but also on part load.

Climatization systems in operating theatres must provide a comfortable and healthy environment for the patients and the surgical team; in fact, there are a multitude of factors to be considering and analyzing for avoiding the evidence of many problems such as hypothermia, anaesthetical gases pollution, thermal discomfort. Comfort conditions can be achieved by controlling microclimatic parameters and air movement; an healthy environment can be achieved minimizing the risks of contamination.
This article summarizes the relevant literature about methods used for the

A model of Venetian blind associated simple or a double glazing is proposed in this article. Simplified modeling is based on a 2D approach (not taken into account of the effects edges) and separately treats the transmission of direct and the diffuse one. The evolutions of the form factors and the solar flows transmitted according to the degree of opening of the blind, of the slope of the plates, the position of the sun in the sky are taken into account and the models used are described.

Several high schools in the south east of France are subject to a major work of renovation. These works need to take into account the problem of summer comfort for a better well-being and intellectual performance of students. One of it was chosen to carry a study on the specific constraints for achieving summer comfort. The study consists of surveys, monitoring and simulations. This enables to determine the major causes of the summer discomfort in field and to propose several passive solutions. These solutions were assessed by simulation using a dynamic simulation tool.

In this paper the performance of a desiccant cooling system was evaluated. The system comprises a desiccant wheel in tandem with a thermal wheel with evaporative coolers in both air supply and return air streams before the thermal wheel. It allows cooling and dehumidifying air without using conventional refrigerants. A computer simulation was developed to study the effects of various designs and outdoor air conditions on the performance of the system. The simulations were run with SPARK, an object oriented program that allows creation of very flexible tools.

Local control of ventilation in large buildings is considered to be a main issue in energy savings regarding the huge energy losses that are usually induced by such large volumes. An efficient ventilation system and the development of local control ventilation strategies could prevent large buildings from having an unsuited or overvalued ventilation and reduce significantly the energy consumption.

La percepción del ambiente térmico no depende únicamente de los parámetros ambientales, sino que es un fenómeno que incluye muchos más factores del entorno interior y exterior, del sujeto que percibe estos parámetros. Incluso habría que considerar factore

The European Union’s (EU) Energy Performance of Buildings Directive (EPBD) aims to increase the energy performance (EP) of buildings by requiring EU Member States to develop an EP calculation methodology and to certify the EP of their buildings. Dynamic s