Soft-computing models for naturally ventilated buildings.

In this study, a mixed mode building, namely the Portland Building at the University of Portsmouth is considered. It combines both Natural Ventilation and conventional Heating Ventilating and Air Conditioning systems to maintain the internal comfort. The paper presents the development of Sof1 Computing models to predict the internal temperature in one of the offices using information from neighbouring rooms, corridor and the outside. To derive this model, the so called Adaptive Neuro Fuzzy lnference System method is used.

Integrated modelling of low energy buildings.

A reduction in the emissions arising from urban activities can be achieved by a combination of energy efficiency measures and a move away from fossil fuels. Progress may be enabled by the deployment of new materials and critical control within buildings and the adop1ion of building- integrated renewable energy conversion technologies. This paper describes the integration of cooperating passive and active renewable technologies within a major building refurbishment in Glasgow It also describes a method for the assessment of replication potential.

Cooling without air conditioning. The Torrent Research Centre, Ahmedabad, India.

This paper presents results from the first year of monitoring the performance of a laboratory building in the new 14.000m2 Torrent Research Centre in Ahmedabad, India. The capital and running costs of air conditioning of non-domestic buildings in northern India are very substantial. while building costs (compared with northern Europe) are low. A cooling technique which maximises reliance on the building fabric and minimises reliance on mechanical equipment is therefore likely to be cost effective. Passive Downdraught Evaporative Cooling (PDEC) represents such a technique.

Simulation of indoor air quality in an office building floor: a first case study.

In order to evaluate the impact on indoor air quality of different installation and ventilation strategies, the modelling of indoor air pollutant transfer has been developed in the CLIM2000 software (thermal and airflow code). Then, these models have been used to simulate the evolution of indoor air pollution in an office building floor for a week in winter under different ventilation strategies. The selected pollutants are CO2, CO, NO2 and HCHO and the sources are outdoor pollution for all pollutants and occupancy for CO2. So far, humidity has not been taken into account.

Probe 17: Cooperative retail services HQ.

Co-operative Retail Services wanted its new headquarters building to be both energy efficient and humane. Have these green ambitions been realised, and did the chilled beams and displacement ventilation systems provide the promised improvements in occupant comfort?

Approaches for improving airflow uniformity in unidirectional flow cleanrooms.

Airflow behavior inside a cleanroom with vertical unidirectional flow has been investigated. The design parameters, such as porosity and height of raised floor, width of clean room and inlet velocity profile, which affect the uniformity of air velocity distribution inside the cleanroom have been studied computationally. The Reynolds-averaged Navier-Stokes equations governing the flow are solved using a finite-volume code ST AR-CD. The standard k-e turbulence model has been used.

Insulation and retrofit: what is feasible.