Patent ID: 9200819
Filing Date: 2015-12-01
Classification: F24D,F24T,F25B,F28F,Y02B,Y02E

Abstract:
1. A method for efficiently operating a geothermal heat pump system, the geothermal heat pump system comprising a geothermal flow loop including an earth loop circulator and a heat pump load flow loop, containing a load loop circulator, the two flow loop systems being interconnected for fluid flow and direct heat exchange at a flow interface; two temperature sensors and a flow sensor at the entrance to and exit from each of the two loops, each of the sensors providing a signal output; a watt transducer operably connected to the circulators and providing a signal output indicating amount of total power usage; and a data receiver/controller operably connected to the sensors and watt transducer to receive the data and provide control to the circulators; the method comprising measuring fluid flow and inlet and outlet temperatures at the flow interface in each of the two flow loop systems, and measuring the total input wattage to the load loop heat pump (Whp), and to the earth loop circulator (Wcirc), calculating the instantaneous rate of heat transfer for the earth flow loop as follows: And calculating the instantaneous rate of heat transfer for the heat pump load flow loop as follows: