This document provides guidance on the heating/cooling coil data in the HVAC Room Equipment section of Hevacomp Design Simulation.
For HVAC systems such as Split Systems and Room A/C Units a cooling and heating coil needs to be defined. These coils require the following data:
• Rated CoP• Fix rated capacity• Fix rated air-volume flow rate• Total cooling capacity modifier curve for temperature• Total cooling capacity modifier curve for flow• Total input ratio modifier curve for temperature• Energy input ratio modifier curve for flow• Part load fraction correlation for part load ratio
The Rated CoP, Fix rated capacity and Fix rated air-volume flow rate simply require figures which should be available from your specifications/manufacturers data. The five other categories are more complicated however, e.g.:
The curves such as that shown above are defined by and used in EnergyPlus (the simulation engine used by Hevacomp Simulator - further information available here). For example, the above Total cooling capacity modifier curve for temperature is described as:
These curves can be defined by calculating the required coefficients as described in the EnergyPlus Engineering Reference guide, available for download at https://energyplus.net/.
These curves should not be edited unless you have a clear understanding of them, along with valid data to enter.