OpenBuildings™ Designer Help

Room Temperature tab

Contains controls used to display simulated temperature values for rooms in the project building.



Tip: You can open the Results Viewer utility to step through the calculations for displayed results by selecting the result value and clicking for more information (as prompted).
SettingDescription
Room: [room name] Located in the left panel of the Room Temperature tab, Room: [room name] can be selected to display Room Temperature on a table in the data display panel on the right side of the Room Temperature tab.
Room: [room name] Monthly average results Contains a table used to display simulated average room temperatures in the selected room for each month of the time period being simulated.
  • Month — Displays the twelve months of the year. Average room temperatures are then displayed for each month of the simulation time period.
  • Operative — Displays the average Operative temperature for each month of the simulated time period. Operative temperature refers to an index that combines air temperature and relative humidity in an attempt to determine the human perceived equivalent temperature. That is how hot it feels, sometimes termed the felt air temperature. The human body normally cools itself by perspiration, which evaporates and carries heat away. When relative humidity is high, the evaporation rate is reduced, so heat is removed at a lower rate causing it to retain more heat than it would in dry air. Measurements have been taken based on subjective descriptions of how hot subjects feel for a given temperature and humidity, allowing an index to be made which relates one temperature and humidity combination to another at a higher temperature in drier air.
  • Mean Radiant — Displays the average Mean Radiant temperature values for each month of the simulated time period. Mean Radiant Temperature (MRT) of a room is the measure of the combined effects of temperatures of surfaces within that room. The larger the surface area and the closer one is to it, the more effect the surface temperature of that surface has on each other. The MRT is the measure of all these surface areas and temperatures.
  • Mean Air — Displays the average Mean Air temperature values for each month of the simulated time period. Mean Air temperature is the average temperature of the air temperatures at the system timestep.
  • Outdoor Drybulb — Displays the average Outdoor Drybulb temperature for each month of the simulated time period. These values come from the weather profile being used for the project simulation.
Room: [room name] Peak day results [peak day of the simulated time period] Contains a table used to display simulated room temperatures for the selected room on the peak day of the simulated time period.
  • Peak day — Located above the peak day room temperatures table, the peak day date is displayed in the following format: month/day/year
  • Hour — Displays the 24 hours of the of the peak day of the simulated time period. Room temperatures are then displayed for each hour of the simulation peak day.
  • Operative — Displays the Operative temperature for each hour of the simulated time period peak day. Operative temperature refers to an index that combines air temperature and relative humidity in an attempt to determine the human perceived equivalent temperature. That is how hot it feels, sometimes termed the felt air temperature. The human body normally cools itself by perspiration, which evaporates and carries heat away. When relative humidity is high, the evaporation rate is reduced, so heat is removed at a lower rate causing it to retain more heat than it would in dry air. Measurements have been taken based on subjective descriptions of how hot subjects feel for a given temperature and humidity, allowing an index to be made which relates one temperature and humidity combination to another at a higher temperature in drier air.
  • Mean Radiant — Displays the Mean Radiant temperature values for each hour of the simulated time period peak day. Mean Radiant Temperature (MRT) of a room is the measure of the combined effects of temperatures of surfaces within that room. The larger the surface area and the closer one is to it, the more effect the surface temperature of that surface has on each other. The MRT is the measure of all these surface areas and temperatures.
  • Mean Air — Displays the Mean Air temperature values for each hour of the simulated time period peak day. Mean Air temperature is the average temperature of the air temperatures at the system timestep.
  • Outdoor Drybulb — Displays the Outdoor Drybulb temperature for each hour of the simulated time period peak day. These values come from the weather profile being used for the project simulation.