HEAT SOURCE WATER PIPING STRUCTURE FOR GROUND THERMAL ENERGY HEAT PUMP SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide heat source water piping for improving heat-exchange efficiency with simple constitution.SOLUTION: The heat source water piping according to the present invention comprises: first branch piping provided between a branch point A at a first connecting portion X side and a branch point B at a second connecting portion Y side on main piping; a second branch piping provided between a branch point C provided between the first connecting portion X and the branch point A, and a branch point D provided on a position further from a primary-side heat exchanger with respect to the branch point B at the second connecting portion Y side; a circulation pump provided on a position further from the primary-side heat exchanger with respect to the branch point A on the main piping and discharging toward the branch point A; first switching means capable of switching a flow channel at a first branch piping side and a flow channel at a branch point C side at the branch point A; and second switching means capable of switching a flow channel at a second branch piping side and a flow channel at a branch pint B side at the branch point D.SELECTED DRAWING: Figure 1