Found This Helpful. Comstock/Comstock/Getty Images. Temperature can affect both the structure of a molecule and how it interacts with surrounding molecules. Heating some molecules, particularly large, biological molecules such as proteins or nucleic acids, will cause them to change shape or even to break up.
The air comes through the diffusers in much larger velocities and different temperatures than the ones tolerated in the space. Due to diffusion, the velocity and the temperature differences are gradually decreased until they reach the tolerable limits.
A diffuser airflow rate is 50 cfm per linear foot (77.4 L/s per linear meter) of diffuser. Therefore, the recommended flow to use when designing is 50 cfm/ linear ft x 0.8 = 40 cfm/linear ft (77.4 L/s/ linear m x 0.8 = 61.9 L/s/linear m). The nominal airflow of a diffuser is determined by multiplying the diffuser length, the number of slots, and the airflow per linear foot. Using the airflow per linear foot calculated above, a 4 foot, 2-slot, 2-way diffuser should be designed to handle 4 linear ft x 2 slots x 40 cfm/linear ft = 320 cfm (1.219 m x 2 slots x 61.9 L/s/linear m = 150.9 L/s). To maximize the effectiveness of ventilation with ceiling diffusers, throws should be kept as long as possible.