Manual T*SOL basic 5.0 - Valentin Software

User Manual T*SOL 7 System Definition
Image: Definition of efficiency curve in
relation to the return temperature
On the Efficiency page, you can set the Heating Efficiency for heating using two variables, depending on
the return temperature:
The efficiency calculation will use either the lower heating value Hu (LHV) or the higher heating value Ho
(HHV). The other value is displayed only.
! Define on the page System Definition > System> Savings, whether calculations should be made in
relation to the higher or lower heating value for this system.
! Define on the page Options > Site Data > Units, whether calculations should be made in relation to the
higher or lower heating value for all new projects.
For outside temperatures above 14°C and without heating, the fixed efficiency for DHW supply is used for
calculation.
7.6 Heating Loop
System Definition > Heating Loop
Image 10.8.1: Input dialog for the
heating loop
The operating conditions of the heating loops must be set for all systems with space heating.
Ł Proceed as follows:
1. Define two heating loops, e.g. a high-temperature space heating loop (radiator) and a low
temperature space heating loop (underfloor) via the respective supply and return temperatures.
The two heating loops need not have different supply temperatures.
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