Building Load
The calculation of Peak loads for an building of this magnitude are obviously complex. In total 4 building load and simulation tools were used to determine and cross reference the loads. The load to the concourse was 97 w/m2. Holst et al 1998 showed that the radiant cooled can absorb up to about 50 w/m2 of short and long wave radiation. Convection and conduction components provide another 30 w/ m2 of cooling from the radiant floor. Designing a radiant floor to handle a capacity of 80 w/ m2 is critical, the water supply temperature is limited to 13°C because of floor surface condensation risk. Preliminary analysis using a 17°C return temperature showed that the mass flow and temperature differential were inadequate for the required 80w/ m2 capacity.