Volume I - Section IV - Experimental Work and Verification of CFD Methodology 
Page IV - 73 
4. 1.3. 1.3 Room With Racks, Cages and Simulated Animals: Apparatus Description 
The same room used in the empty room analysis with the same supply and exhaust flow rates 
and diffuser and exhaust were outfitted with three racks, rodent cages, and a sink (figure 4.48). 
Each rack was 0.61m D x 1.52m H x 1.83m W (24” x 60” x 72”) with 6 solid shelves (figure 
4.49). The shelf at the top of the rack was 1.52m (60”) from the floor. The distances between two 
shelves (center to center) was 0.28m (11”), while the shelves themselves were 1.25e-2m ( Vi ”) 
thick. All racks were filled to capacity with mouse cages (7 cages per shelf; 42 cages per rack) 
and the cages were shoebox type with were 1.25e-2m (V£”) of hardwood shavings bedding. The 
sink cabinet size was 0.61m W x 0.61m D x 0.81m H (24” x 24” x 32”). A 200 ohm precision 
resistance heater was placed in each cage to generate 2.42 W to simulate the heat load of the 
mice. CO 2 was supplied through diffuser stones at 3.75e-2m (9.5”) above the bedding level 
towards the front of each cage near the heaters. The total CO 2 rate supplied to the room was 990 
mL/min. Water bottles and simulated feed obstruction were included in each cage. 
S 
Figure 4.48 Layout of the testing room with racks and sink. Each rack had six shelves and 
each shelf had seven cages. 
