Heating Coil - Water to Air Heat Pump

Coil:Heating:WaterToAirHeatPump:EquationFit

Used in:   Zone Water To Air Heat Pump

The Water to Air Heating Equation Fit Coil is a simple curve-fit model that requires coefficients generated from heat pump catalog data. This is an equation-fit model that resembles a black box with no usage of heat transfer equations. The performance of the heat pump is modeled using curves fitted from the catalog data. A detailed description of the equation-fit model is available in the following reference: Tang,C. C. 2005. Modeling Packaged Heat Pumps in Quasi-Steady State Energy Simulation Program. M.S. Thesis. Department of Mechanical and Aerospace Engineering, Oklahoma State University. It is also downloadable from www.hvac.okstate.edu.

General

Name

A unique auto-assigned name identifying name for the coil. Any reference to this coil by another object (typically a Zone Water To Air Heat Pump) will use this name.

Rated air flow rate

This numeric field contains the rated volumetric air flow rate on the load side of the heat pump (in m3/s or ft3). This field is autosizable.

Rated water flow rate

This numeric field contains the rated volumetric water flow rate on the source side of the heat pump (in m3/s or gal/min). This field is autosizable.

Gross rated heating capacity

This numeric field contains the gross heating capacity of the heat pump at the rated condition (in W or Btu/hr). The gross heating capacity should not account for the effect of supply air fan heat. This field is autosizable.

Gross rated heating COP

This numeric field contains the gross rated heating coefficient of performance of the heat pump. The gross rated COP of the heat pump should not account for the effect of supply air fan heat.

Heating Capacity Coefficients 1-5

These numeric fields contain the first to fifth coefficient for the heat pump capacity.

Heating Power Consumption Coefficients 1-5

These numeric fields contain the first to fifth coefficient for the heat pump power consumption.