No abstract

In the present work, climate models were presented, which are intended for calculating energy consumption of air conditioning systems, spent on processing the outdoor air to supply it to the room as a supply air, and on the assimilation of heat from external and internal sources. Currently, the number of buildings is growing, in which the bulk of the heat surplus is made up of internal heat. Therefore, for such buildings, a climate model is needed that contains only data on the repeatability of combinations of temperature and humidity of the outside air. Such a model is a probabilistic-statistical climate model. To calculate the energy consumption of air conditioning systems in rooms with a load formed due to heat transfer through external building envelopes and the direct penetration of the heat of solar radiation, we need a model that contains not only the mentioned probabilistic characteristics, but also changes over time combinations of climate parameters. Such a model is a reference year. The article presents data on the development of a reference year for the city of Hanoi and shows that when assimilating only internal heat surpluses it is advisable to use a probabilistic-statistical model, that provides a much more accurate result.

No abstract

The building envelope with the openings play an important role in the process energy performance and ensure the well-being in a working space because of the impact of the openings to the visual and thermal comfort of the occupants. When designing buildings and structures, the standards for permissible safety should be taken into account, which are expressed by the value of critical duration of fire and the explosive load. The aim of the study is to propose the integrated approach in determining the rational Window to Floor Ratio to provide the target Daylight Factor, energy efficiency for the tropical climate, in consider to fire and the explosive load using the graphic of the relationship of the Window to Floor Ratio to the target minimum Daylight Factor. The result was shown for tropical of Vietnam, the Window to Floor Ratio was recommended of 15.2% to 18.5% corresponds to recommended target Daylight Factor of 1.35%.