Design of Green Building Component

Civil Engineering

A significant proportion of energy consumption in the Heat, Ventilation and Air Conditioning (HVAC) system can be attributed to the heat transportation with in the building. This can be addressed by reducing the volumetric flow rate of the heat transfer liquid As density and specific heat capacity of air is very low, therefore a large volume of air needs to be circulated to effectively control the temperature in the building. Instead, as an alternate, water can be used as a heat transfer liquid. As water’s density and specific heat capacity as compared to air are very large, this significantly reduces the volume of heat transfer liquid that is to be circulated to achieve the same degree of temperature changes as compared to using air. In general, chillers and boilers are used as sources for heat generation and absorption. Additionally, as a supplement to chillers and boilers, low grade heating/cooling sources like night cooling with ventilation, solar heating, ground heat exchange etc can be used to further reduce effects on environment.

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