.AixLib.Fluid.BoilerCHP.BoilerGeneric

Information

Overview

The model differs between DesignOperation and OffDesignOperation.

In DesignOperation for nominal conditions the (max) fuel power is estimated. The OffDesignOperation fuel consumption is estimated via firing rate.

During operation, the transferred heat flow is estimated with respect to actual efficiency within a performance map.

Further assumptions are used:

• The quadratic coefficient coeffPresLoss is described by a fit-function from manufacturer data.
• The volume vol.V bases on a fit from manufacturer data.
• G: Thermal conductance is described by a fit 0.0465 * QNom/1000 + 4.9891 from manufacturere data at a temperature difference of 50 K to ambient
• C: Factor C/QNom is in range of 1.2 to 2 for boilers with nominal power between 460 kW and 80 kW (with c of 500J/kgK for steel). Thus, a value of 1.5 is used as default. (see AixLib.Fluid.BoilerCHP.BoilerNoControl)

Revisions

• June, 2023 by Moritz Zuschlag; David Jansen
  First Implementation (see issue #1147)