To access the TM52 Adaptive Comfort dialog, the user will enter VistaPro, then click on the Comfort settings toolbar button.
The Comfort settings dialog will appear where the user should then tick on the TM52 Adaptive Comfort tick box.
Comfort Parameters Dialog
This will then allow the user to input the relevant information for the assessment.
TM52 Adaptive Comfort Settings
Summer (elevated) air speed (m/s)
This air speed is used to calculate the operative temperature of each space in the assessment. The operative temperature is calculated using the formula:
Equation 1 – Operative Temperature
Where:
(°C)
(°C)
Building Category
The building category is used in calculating the maximum acceptable temperature ( .
Equation 2 – Maximum Acceptable Temperature
Where:
exponentially weighted running mean of the daily mean outdoor air temperature
Category
Explanation
Suggested acceptable range (K)
Category I
High level of expectation only used for spaces occupied by very sensitive and fragile persons
2
Category II
Normal expectation (for new buildings and renovations)
3
Category III
A moderate expectation (used for existing buildings)
4
Table 1 – Building Categories
The CIBSE suggestion is that designers should aim to remain within the Category II limits. For TM52, Category II should be used. This will mean that:
Equation 3 – Maximum acceptable temperature Category II TM52
.
