IEA Solar Heating and Cooling Programm - NachhaltigWirtschaften.at

IEA SHC Task 38
Monitoring Procedure
Figure 2-2 Example of a solar heating and cooling system of a specific installation based on
the “SHC Max System” shown in Figure 2-1.
2.2 Selection of a standard graphical scheme for the representation of a
reference system
The selected conventional system to be taken as reference for comparisons consists of a
condensing natural gas boiler to match the space heating (SH) load and the domestic hot
water (DHW). A small storage tank, with typical heat losses based on the measured
domestic hot water consumption, has been assumed to be also heated by the natural gas
boiler. Finally, the cooling load is supposed to be matched by a compression chiller.
The conventional system has to include an AHU when the monitored system is based on a
DEC. In case an AHU is present in the monitored system, the conventional include it as well
but it is not significant for the comparison as the distribution systems are supposed to be the
same. Figure 2-3 shows the selected conventional system and the relevant energy flows. A
description of each flow is shown in the Table 1, Table 2 and Table 3.
5 99% draft Version