Introduction to integration of renewable energy in demand controlled hybrid ventilation systems for residential buildings

In the scope of the EU supported project RESHYVENT, the possible integration of Renewable Energy Solutions (RES) into hybrid ventilation systems has been analysed. The focus has been on solar and wind applications to substitute the use of fossil fuel. The feasibility of the investigated options depends on the ventilation concept the RES is integrated into, the location of the building geographically, placement of the RES in the building and on the urban environment.

Case studies of energy information systems and related technology: operational practices, costs and benefits.

In this paper EIS (Energy Information System) is first defined, then 4 case studies are presented, one in detail because it is an example of high-end EIS and the other cases are summarized briefly. For all the cases operational practices, costs and benefits are presented.

Criteria for design of indoor environment in sustainable buildings

There is a worldwide trend to develop a tool that can provide comprehensive assessment ofbuildings for sustainability. Many efforts were found to propose approaches for energy-savingand resource-recycling, and on the other hand buildings for sustainability should maintain theacceptable indoor environment quality to maintain the occupants health. This paper presentsa comprehensive index, IEI(AHP), composed of the filtered physical indicators, for quantitativeassessment on the built environment.

Multicriteria analysis method of health, IEQ and energy use for sustainable buildings

The stake of sustainable development is to ensure today's and future developments of awealthy and healthy society in a high quality environment. This is also valid for sustainablebuildings that should take account of environmental, economical and social stakes. Thisincludes, among others, low energy use, good indoor environment quality (IEQ) and health.One of the aims of the European HOPE project is to evaluate buildings from these points ofview.

A design oriented indexing system for energy use and indoor climate

An assessment concept is being developed for iterative design of office buildings withintegrated energy and indoor comfort solutions. An indexing system has been devised thatincorporates environmental effects of energy use with thermal and atmospheric indoor climatein a score on a common scale from 0 to 100%, called the Eco-factor. Only the operativephase of the building life cycle is considered. Only indoor climate aspects that are closelyinter-related with energy use are considered: Thermal comfort and Indoor Air Quality.

Energy analysis of the thermal comfort

A thermal comfort designer is especially concerned with creating an environment to improvethe physical, mental and psychical health of human beings. The general thermal state of thebody both in comfort and in heat or cold stress is dependent on an analysis of the heat balancefor the human body. Traditional methods of thermal analysis are based on the first law ofthermodynamics. By contrast, the second law of thermodynamics introduces the usefulconcept of exergy in the analysis.

Ventilation, Humidity Control and Energy : A Tightrope of Challenges and Opportunities

This paper is a keynote address presented at Ventilation, Humidity Control and Energy 24th AIVC Conference.It is a warning for HVAC professionals that are however walking a tightrope. How provide sufficient ventilation for IAQ that yet maintain an appropriate moisture balance without using excessive energy ?Mold is having a severe impact upon us; excessive ventilation and reducing the energy to control the humidity are oftentimes being blamed. Claims have skyrocketed for mold , mildew and humidity-related problems cases.

Summing-up of the 24th AIVC conference

This is a personal set of comments giving the author's impressions of the papers presented at the conference. A great concern of him is the difference between building scientists and health scientists as indoor air quality issues are investigated.

Two-objective online optimization of supervisory control strategy

The set points of supervisory control strategy are optimized with respect to energy use and thermal comfort for existing HVAC systems. The set point values of zone temperatures, supply duct static pressure, and supply air temperature are the problem variables, while energy use and thermal comfort are the objective functions. The HVAC system model includes all the individual component models developed and validated against the monitored data of an existing VAV system.

Technical and economical interest of sustainable refurbishment technologies in France, Italy and Finland

The aim of the European SSHORT (Sustainable Social Housing Refurbishment Technologies) project is to increase and promote rational and efficient use of energy in the retrofitting of social housing buildings. In this scope, one step was to evaluate with simulation studies the technical and economical interest of selected sustainable technologies on standard collective social housings in participating countries.