AIVC - Air Infiltration and Ventilation Centre

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hot climate

Modeling of thermal environment and human response in a crowded space for tropical climate.

In a crowded building space with no air conditioning, heat and moisture emissions from occupants can result in heat stress in the indoor environment, which in turn, causes thermal strain on the human body. In the present paper, a 61-node thermoregulation model is coupled with a thermal environment model of ventilated space to simulate both the thermal conditions and occupant's responses. The coupling model is validated with experimental data at high occupant density in a thermal environmental chamber.

CFD simulation of transient cooling in a typical Hong Kong office.

The transient performance of displacement ventilation has rarely been studied though many researches have been done on the area.. Due to the importance to the analysis and design of an air conditioning system, the unsteady histories of displacement ventilation of a typical office in Hong Kong is simulated numerically with a validated computational fluid dynamics (CFD) model. Solar heat gain is introduced from the glass wall. Turbulent flow with thermal convection is considered. As a preliminary research, the heat capacity of the walls, occupants and machines is ignored.

Space conditioning using evaporative cooling for summers in Delhi.

The article examines the possibility of space conditioning the interiors of a multistorey office building in Delhi using evaporative cooling in the summer months of April, May and June. The temperature and humidity conditions obtained in a room of the building with direct evaporative cooling are studied by simulation. In this case study, the room is assumed to have a south-facing wall with a window and all other walls, ceiling and floor are interior partitions.

Modelling the interactions between air distribution systems, building envelopes, and the outdoor environment in a typical hot, humid climate residence.

Air leakage and duct wall conduction in forced air distribution systems often waste 20% to 40% of the energy used to condition residences in hot, humid climates. The simulation of these forced air distribution system leakages, their attendant uncontrolled airflows within the building system, and their consequential energy uses may be achieved by treating building spaces as pressure vessels (nodes) that are interconnected with the forced air distribution system, the outdoors, and each other through the basic laws of pressure and airflow.

A case study on global-conscious and local-oriented housing design in a hot and humid climate. Part 2: evaluation of the thermal environment in indoor and semi-outdoor spaces.

In order to confirm the effectiveness of the indoor climate control system adopted in the experimental house, the indoor climate in summer was evaluated for the experimental house and two other buildings in Nanning city and a comparison was made. Two vernacular buildings which have natural indoor and semi-outdoor cooling systems were selected for the study The majority of the measurements were taken using the spherical thermography system. The results showed that the quality of the indoor thermal environment of each building is approximately the same.

Natural cooling in Hispano-Moslem residential architecture: the case-study of the Court of the Lions and the Court of Comares in the Alhambra (Granada).

The XIV-century Palaces of the Lions and Comares constitute the principal residential complex of the Alhambra in Granada. Both are distributed around gardens enclosed in courtyards, originally with abundant vegetation and water. This paper includes a series of measurements carried out in the rooms and the courtyards in order to contrast the different microclimates, as well as some solar-penetration diagrams. It also focuses on the analysis of the Hispano-Moslem residential type in relation to ifs environmental performance