comf (version 0.1.9)

calcMRT: Calculating View Factor and MRT

Description

These function calculate view factors and MRT based on room geometry, temperature, and position. Note that this is a preliminary version. Be cautious when using.

Usage

calcMRT(a, b, c, Fmax, A, B, C, D, E, Temperatures)
calcSimpleMRT(length,width,height,position,Temperatures)

Arguments

a, b, c

numeric values presenting distances to surface (calculated by calcSimpleMRT) [m]

Fmax

a numeric value presenting view factor coefficient

A, B, C, D, E

numeric values presenting coefficients for view factor calculation (calculated by calcSimpleMRT)

Temperatures

a numeric vector with 6 surface temperatures in the order (back wall, front wall, left wall, right wall, ceiling, floor) ) [degree C]

length

a numeric value presenting length of room in [m]

width

a numeric value presenting width of room in [m]

height

a numeric value presenting height of room in [m]

position

a numeric vector presenting position of person in room in the order (distance from left wall, distance from front wall, height of disc) in [m]

Value

Both functions return MRT reflecting the view factor.

Details

The length of variables should be one, except for position and Temperatures.

References

Coefficients are given on page 33 of "Ergonomics of the thermal environment - Instruments for measuring physical quantities (ISO 7726:1998)".

Examples

# NOT RUN {
## Calc single value of MRT in room with only right angles
length <- 6 # in m
width <- 4
height <- 3
position <- c(2,3,0.6)
Temperatures <- c(21,21,21,21,30,21) # uniform room with ceiling heating

calcSimpleMRT(length,width,height,position,Temperatures)
# }