Merge pull request #3411 from architecture-building-systems/3410-vent…

…ilation-zero

Update electrical_loads.py

cea/demand/electrical_loads.py

@@ -341,6 +341,7 @@ def calc_Eve(tsd):
     fan_power = P_FAN  # specific fan consumption in W/m3/h, s
 
     # mechanical ventilation system air flow [m3/s] = outdoor air + recirculation air
+    tsd['m_ve_rec'] = np.nan_to_num(tsd['m_ve_rec'])    # TODO:DOCUMENTATION, in heating case, m_ve_rec is nan
     q_ve_mech = tsd['m_ve_mech'] / physics.calc_rho_air(tsd['theta_ve_mech']) \
                 + tsd['m_ve_rec'] / physics.calc_rho_air(tsd['T_int'])