EFFECTIVE ROOM SENSIBLE HEAT FACTOR

It is defined as the ratio of the effective room sensible heat to the effective room total heat

where ERSH = Effective room sensible heat

= RSH + OASH × BPF

= RSH + 0.0204 V̇₁(t_d1 − t_d2) × BPT

Figure 20.32 Effective room sensible heat factor

ERLH = Effective room latent heat

= RLH + OALH × BPF

= RLH + 50 V̇₁(w₁ − w₂) × BPF

ERTH = Effective room total heat

= ERSH + ERLH

BPF = By-pass factor

The line joining the point 2 and point 6, i.e. ADP as shown in Fig. 20.32, gives the effective room sensible heat factor line (ERSHF line). From point 4, draw line 4-4′ parallel to line 3-2. From similar triangles 6-4-4′ and 6-3-2, we have