Utility functions for calculating Thermal Sensation (TS).

Calculate Thermal Sensation (TS) from air temperature, wind speed, relative humidity, solar radiation and ground temperature.

Thermal Sensation is an index which predicts sensation of satisfaction/dissatisfaction under the prevailing outdoor climatic conditions. Thermal Sensation is derived from original work carried out by Givoni and Noguchi [1].

Note

[1] Givoni, Baruch & Noguchi, Mikiko & Saaroni, Hadas & Potchter, Oded & Yaakov, Yaron & Feller, Noa & Becker, Stefan. (2003). Outdoor comfort research issues. Energy and Buildings. 35. 77-86. 10.1016/S0378-7788(02)00082-8.

Parameters
• ta – Air temperature [C]

• ws – Wind speed [m/s]

• rh – Relative humidity [%]

• sr – Solar radiation [Wh/m2]

• tground – Ground temperature [C]

Returns

ts – Thermal sensation [unitless]

Get the category of effect associated with a given thermal sensation (TS).

Each number (from -3 to 3) represents a certain TS thermal sensation category. With categories being the following:

• -3 = Very cold

• -2 = Quite cold

• -1 = Cold

• 0 = Comfort

• 1 = Hot

• 2 = Quite Hot

• 3 = Very hot

Parameters

ts – Thermal Sensation [unitless]

Returns

category – An integer indicating the level of effect associated with the thermal sensation. Values are one of the following:

• -3 = Very cold

• -2 = Quite cold

• -1 = Cold

• 0 = Comfort

• 1 = Hot

• 2 = Quite Hot

• 3 = Very hot