OpenBuildings™ Station Designer Help

Room Emitter

Used to place heat exchanger systems including radiators and convectors.

Accessed from:


  • Ribbon: Building Design > Mechanical > Mechanical Systems > Room Emitter


Schema Properties example - Room Emitters

Selecting a fitting from the ribbon panel activates the Place Component settings dialog, where you can manage the schema parameters (DG instance properties). Also, the contextual Placement tab appears on the ribbon, that provides placement settings options for the currently selected fitting.

The generic placement settings, along with the unique set of dimensional and data parameters from the datagroup system provide the core workflow used to accurately position mechanical components within a system.

Component categories

Chilled beams are the active heat exchanger assemblies to carry pipes of water. The active beams are induction diffusers use ducts to push the air toward the unit to increase its heating and cooling capacity. The active beams comprise heating as well as cooling coils assemblies. Passive beams rely mainly on convection or both radiant exchange and convection providing higher thermal comfort levels. Beams share many of the common properties.

Radiator are the most commonly used systems for room heating in the residential sector. They are operating with a fluid (usually water) heated by a boiler. Radiator built up of thin walled tubing the external surface of which is made very large as compared with its sectional area, for the purpose of heat dissipation, by flattening it so that the passage within it is quite narrow.

Convectors are employed wherever cozy warmth or cooling with fast adaptation to the control system and great comfort and convenience are expected. Suitable in buildings with glass facades, such as modern office buildings, hotels, and indoor swimming pools. Highly effective wherever the use of floor space near walls is important: e.g. in museums and in buildings used for trade or commerce Fan convectors are one of the earliest forms of heating in homes bring a room up to temperature fast. Convector heater is one which relies on the natural expansion and travel of hot air around it to transfer heat throughout the area to be heated. Convection heater may have an electrical heater element, a hot water coil, or a steam coil. Because of the natural ventilation, they are quieter in operation than fan heaters.

The Electrical baseboard heater is an energy efficient room-by-room heating solution.

Room Emitters share many of the common properties.

Notable Properties

  • Connection End Type – The end conditions of fittings are set to flange, male or female connections with full dimensional control by setting the End Type property. Also, the two ends are independent, and may have different connections. For example, the value fl-2;fe-.13 creates a flange at End1 with size 2, and a female connection at End2 with a clearance of .13.
  • Valve Type – Thermostatic or Non Thermostatic types for flow and return valve suit safety aspect where the Low Surface Temperature (LST) radiators need to be installed.
  • Modular Type – Condensing or Atmospheric types modular design gives flexibility in constructing a compact modular radiator. Condensing type modular adds drain on the surface area side.

The list of equipments available in Room Emitter group is compiled in the Emitter types topic.