0.0
0.2
0.4
0.6
0.8
0
20
40
60
321
, %
w, m/s
a
0.0
0.2
0.4
0.6
0.8
0
20
40
60
, %
w, m/s
321
b
0.0
0.2
0.4
0.6
0.8
0
20
40
60
321
, %
w, m/s
c
Figure 4. Efficiency coefficient-vs.-air-vapor flow rate and relative humidity: 1
– 40 %; 2 – 50 %; 3 – 60 %. Air-vapor flow temperature ºC: 40 (a); 50 (b) and 60 (c)
Source: developed by authors
Figure 5. Structure of heat input for closed-type heat storage unit
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