CIBSE Heat Loss (Basic) dialog box

Used to display results from the CIBSE heat loss calculation conducted using the Basic Model steady state heat loss model. The Basic Model, also referred to as the complex model, involves carrying out a rigorous heat balance for the room, considering convective and radiative heat transfer separately. The complex heat loss model calculation results are often different from those obtained using the simple heat loss model. It is considered more accurate results because it is based on a more accurate analysis of room heat transfer, with fewer approximations.

Results are reported on the CIBSE Heat Loss (Basic) dialog box tabs. Losses from individual room surfaces can be viewed in the Full report tab. Total project losses can be viewed in the Summary report tab. Results can also be viewed graphically on the Graph tab. Formulae can be viewed by clicking results.

The CIBSE Heat Loss (Basic) dialog box is divided into two main panels. A selection panel (left) to select which portion of the report to display, and a report display panel (right) to view, save and print the reports.

Setting	Description
Room selection	Click to select and deselect the rooms whose calculation results will be displayed in the Summary and Full reports. Clicking the Room selection icon changes the layout of the CIBSE Heat Loss (Basic) dialog box. Rooms can be selected/deselected individually by clicking on them, or select/deselect all by clicking the two buttons provided. The Room selection view is a subset of the CIBSE Heat Loss (Basic) dialog box. Select all — Used to select all rooms with a single click. Deselect all — Used to deselect all rooms with a single click. OK — Applies all changes and closes the Room selection view. Rooms that have been selected will be displayed in the Full report tab. Cancel — Cancels all changes, and closes the Room selection view.
Summary report tab	Used to view a summary report of the results of the CIBSE heat loss calculation conducted using the Basic Model steady state heat loss model.
Full report tab	Used to view a full report of the results for each room of the CIBSE heat loss calculation conducted using the Basic Model steady state heat loss model.
Graph tab	Used to view a graphical report of the results for each room of the CIBSE heat loss calculation conducted using the Basic Model steady state heat loss model.
Print	Clicking the Print icon opens the Print dialog box, which is used to print the contents of the reports panel.
Save	Clicking the Save icon opens the Save As dialog box, which is used to save the contents of the reports panel to a PDF file.

CIBSE Heat Loss (Basic) dialog box Summary report tab

CIBSE Heat Loss (Basic) dialog box Full report tab

CIBSE Heat Loss (Basic) dialog box Graph tab

To start the CIBSE heat loss calculation, and review the results

To review the calculation details

Parent topic: Steady State Calculations