Experimental Case Study - Design for Micro-Combined Cooling, Heating and Power Systems - page 374

Fig. 24 DHW hydraulic circuit scheme (CH10)

D#— Temperature difference ( ° C);

fluid (kg/m 3 );
Ho — Pressure of the thermal fluid (mbar);
c —

q— Density of thermal

Speci c heat capacity of the thermal fluid (kWh/kg ° C);

v — uid velocity (m/s).

The results obtained by applying the relations from 38 to 45 in Chap.

“ Functional Design of the mCCHP-RES System ” for hydraulic circuits sizing, are

given in the Table 23 .
The connection of all circuits in a hydraulic scheme is shown in Fig. 25 .

Table 23 Hydraulic circuits features
Circuits CH1 CH2 CH3,

CH11

CH4 CH5,

CH6

CH7,
CH8

CH9 CH10

DN (mm) 32 30 40 40 40 25 25 20

Volume flow
(m 3 /h)

4.2 3.2 7.0 4.0 6.0 4.0 1.5 1

Delivery
head (m)

25 12 12 12 12 (2

rotors)

12 12 6

Power
consumption (W)

170 20 - 70 25 - 345 20 - 190 25 - 450 190 90 70