Appendix I: Visualization of Heat Loss Curves
The graph below show the heat lows for an air temperature of 60F. The heat loss according to
the graph per sq. ft. from the tank surface will be around 500 BTU or 0.146 kWh. The blue line is
the most appropriate to choose since inside the greenhouse air velocity is practically zero.
The graph clearly shows a requirement for a 1.8 kWh .We have to take in consideration that the water
will lose heat due to the constant flow but since we just interpolated from the graph the heater rating
we choose will give the desired results.
Appendix J: Visualization of Static Head for Pumps
The relation of GPH and static head is shown in the graph below.
This graph is specific for some aquaponic models. The same
principle applies to most submersible pumps.