Patent ID: 8726979

Claim:
A heat exchange apparatus with automatic flow rate exchange modulation, comprising: a heat exchange apparatus four fluid ports (a,b,c,d) through which the at least one heat exchange fluid is pumped into and out of the heat exchange apparatus, wherein first and fourth ones of the fluid ports (a,d) are on a first side of the heat exchange apparatus and second and third ones of the fluid ports (b,c) are on a second side of the heat exchange apparatus; at least two fluid pumps ( 111 , 112 or 120 a , 120 b , 120 c , 120 d ) that form a double flow circuit fluid pumping device ( 123 ) for pumping at least one heat exchange fluid through the heat exchange apparatus in the first direction via a first fluid flow port from the first fluid port (a) on the first side of the heat exchange apparatus to the second fluid port (b) on the second side of the heat exchange apparatus and in the second direction via a second fluid flow path from the third fluid port (c) on the second side of the heat exchange apparatus to the fourth fluid port (d) on the first side of the heat exchange apparatus, said first fluid flow path being different from the second fluid flow path; a power source ( 300 ) for supplying power to the at least two pumps; and an operative control device ( 250 ) for operatively controlling said at least two fluid pumps to perform at least one of the following operations in order to operatively control a temperature distribution with the heat exchange apparatus: (a) switching a pumping direction; (b) operatively controlling a flow rate of the fluid; (c) operatively controlling both the pumping direction and the flow rate, wherein a timing of said operations is preset in an open loop operative control or manually controlled.