Impact of ventilator parameters on system energy consumption.

The operation and performance of forced-air ventilation systems with the aid of a dynamic modeling and simulation computer program are presented. The functions and features of GEMS (Generalized Engineering Modeling and Simulation), a dynamic modeling and simulation software tool, are briefly described. Using GEMS, the effects of different ventilation airflow rates and sensible and moisture efficiencies on the thermal comfort environment within the conditioned space were analyzed.

Guidelines for performance based innovative mechanical ventilation systems.

The development of guidelines for performance based innovative mechanical ventilationsystems in residential and commercial buildings is included in the European Commissionproject TIPVENT Towards Improved Performances of Mechanical Ventilation Systems.The overall aim of TIPVENT is to promote improved performances of mechanical ventilationsystems and the introduction and implementation of innovative designs. The development ofperformance oriented procedures for designing, commissioning and maintaining mechanicalventilation systems plays a key role in the project.

Airtightness and underpressures measurements in French apartments.

Dwellings airtigthness is not well known in practice, in France.When dwellings are equipped with mechanical ventilation systems (which represents about 95% of the new dwellings in France) the airtigthness can strongly influence the performance ofventilation.In the frame of the European Joule Project TIP-VENT (Towards Improved MechanicalVentilation Systems) [1], measurements of airtightness and underpressures were made onthree multifamily buildings.

A novel ventilation heat pump system.

The move towards improving building air-tightness to save energy has increased theincidence of poor indoor air quality and associated problems, such as condensation onwindows, mould, rot and fungus on window frames. Mechanical ventilation heat recoverysystems (MVHR) combined with heat pumps offer a means of significantly improving indoorair quality as well as providing heating and cooling required in buildings.This paper is concerned with the testing and performance of a novel ventilation heat pumpsystem developed for the domestic market (1,2,3).

Inspecting ventilation systems.

Energy efficient advanced house with integrated mechanical system.

The Advanced House represents the next generation of energy-efficient housing. The total energy requirements of the house have been reduced to an estimated 31 % of the needs of a conventional home. This has been accomplished by incorporating such features, as a prototype, an Integrated Mechanical System (IMS), high-performance windows, energy-efficient lighting and appliances, high levels of insulation, airtight construction, and an energy-efficient fireplace.

Design methods for ventilation systems in residential and commercial buildings.

The development of guidelines for smart innovative mechanical ventilation systems is a task included in an ongoing research project partly supported by the European Commission in the framework of the Joule programme "TIPVENT - Towards Improved Performances of mechanical Ventilation systems". Before starting the actual work with the guidelines a survey was carried out to determine the level of current design methods for ventilation systems in the participating countries (Belgium, France, Great Britain, the Netherlands, Portugal, Sweden and Switzerland).