Abstract
Melbourne's climatic conditions demand that its buildings require both heating and cooling systems. In a multi-storey office building , however, cooling requirements will dominate. How the internal space is cooled and ventilation air is delivered will significantly impact on occupant comfort. This paper discusses the heating and cooling systems proposed for the CH2building. The paper critiques the proposed systems against previous experience, both internationally and in Australia. While the heating system employs proven technologies, less established techniques are proposed for the cooling system. Air movement in the shower towers, for example, is to be naturally induced and this has not always been successful elsewhere. Phase change material for storage of "coolth" does not appear to have been demonstrated previously in a commercial building, so the effectiveness of the proposed system is uncertain. A conventional absorption chiller backs up the untried elements of the cooling system, so that ultimately occupant comfort should not be compromised .
Highlights
The heating and cooling of buildings has a long history
This study assesses whether the heating and cooling system proposed for the CH2building provides the necessary thermal conditions for its occupants
The heating and cooling system of the CH2 building has been designed to maintain office air temperatures in the range of 21-250C and provided this is achieved with acceptable levels of relative humidity, the building should satisfy most occupants in terms of thermal comfort
Summary
The heating and cooling of buildings has a long history. Active heating systems began with cave dwellers, who lit open fires for warmth and light in their rock caverns. More advanced heating systems were adopted by civilizations such as the Romans, who operated furnaces below their buildings and ducted the hot gases to upper level rooms to provide warmth. The hypocaust, as it was known , has found a modern day equivalent in the form of advanced fabric energy storage systems such as the TermodeckTM system. This study assesses whether the heating and cooling system proposed for the CH2building provides the necessary thermal conditions for its occupants. The heating and cooling system proposed for the CH2building is described and evaluated in terms of previous experience , both in Australia and overseas. As the building is still being constructed , design changes made subsequent to this evaluation are obviously not considered
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