
Heating ventilation and air conditioning
538
EKK
EH
M
M
M
M
Figure 13.35 Heating mode (Source: BMW)
EKK
EH
M
M
M
M
Figure 13.36 Mixed mode (Source: BMW)
evaporator is cold to ensure dehumidication and the high voltage battery
(in this example) can also be cooled. Refrigerant heat is used to ensure the
desired cabin temperature is reached.
13.5.2 AC research
A promising new cooling method is based on a thin polymer membrane
that can dehumidify the air entering an enclosed space. This could make
conventional AC systems more efcient.
The technology, developed by Dais Analytics, uses a special plastic lm called
AquaLyte that selectively allows moisture but not ...