Cooling and Heating Load Calculation Principles

The output file, HBCalc.out is significantly longer than the input file and will not be reproduced here. However, each section of the file will be explained. The output file consists of a series of descriptors at the left margin followed by data values. In some cases, the data values are for each hour for all 12 surfaces, and in other cases they are 24-hour values only. The table below explains the data values that appear in each section of the output file.
| Text Heading from HBCalc.out | Explanation (All SI units where applicable) |
|---|---|
| HBSensible Cool Load, | The sensible cooling load for the zone as determined by the heat balance method (W) |
| Supply Air Flow Rate, | Supply airflow rate for zone (m 3/s) |
| Tot CoolingCoil Load, | Cooling coil load at given supply air temp and coil outlet RH (W) |
| Sen CoolingCoil Load, | Sensible load on cooling coil (W) |
| Lat CoolingCoil Load, | Latent load on cooling coil (W) |
| RTS coef I-Load, | RTS coefficients for processing internal gains |
| RTS coef Solar Load, | RTS coefficients for processing solar gains |
| RTS Sensible Load, | Sensible cooling load as determined by the RTS method (W) |
| Solar Time, | Shows solar time corresponding to the clock time |
| TbcOutside | A listing of 24 hourly outside boundary condition temperatures for each of the 12 surfaces. |
| Incident solar | A listing of 24 hourly values of incident solar heat flux for each of the 12 surfaces. |
| SHGC | The solar heat gain coefficient used each hour for all windows |
| Solar Transmittivity | The solar transmissivity... |