Direct Acting heater/Cooler

 

 

        Toolbar button for direct acting heater/coolers list

 

Direct acting heaters are intended to represent any room unit with negligible thermal capacity. Unlike radiators, direct acting units can be used to heat or cool a space. Cooling is achieved by entering a negative value for the output (corresponding to either minimum or maximum sensed signal) in the room unit controller dialog.

The Direct Acting Heaters dialog allows you to create a set of direct acting heater types for placement in the building. Direct acting heaters can utilize CHP to provide a base load.

 

 

 

Enter a description of the component. The reference is limited to 100 characters. It is for your use when selecting, organizing, and referencing any component or controllers within other component and controller dialogs and in the component browser tree. These references can be valuable in organizing and navigating the system and when the system model is later re-used on another project or passed on to another modeler. Reference names should thus be informative with respect to differentiating similar equipment, components, and controllers.

Enter the radiant fraction of the heat emitted (or cooling effect) from the device. See Table 13 in Apache Tables guide for typical values.

Enter efficiency for the direct acting heater.

Tick this box to indicate that the heater can accept heat input from a CHP system (if present).

Sequence ranking determines the sequence in which the loads on various heat sources will be addressed by CHP-supplied heat. The loads assigned to heat sources with low values of this parameter will be first in line to receive heat from the CHP. If two heating sources have the same sequence ranking, they will be served simultaneously, with the CHP input supplying the same fraction of the heating load for both.