Patent ID: 6112545
Filing Date: 2000-09-05
Classification: F24F,F25D

Abstract:
A single pipe closed loop reverse flow system for use in cooling and dehumidifying multiple enclosures, each enclosure serviced through a suitable heat transfer device, the system comprising:(a) a closed loop single pipe circuit connected in line to a chiller and a pump and connected out of line to an expansion tank;(b) a single coil fitting connection to the pipe circuit to supply chilled water to the heat transfer device for each enclosure, the single coil fitting connected to the pipe circuit by a tee fitting, the coil fitting having a housing enclosing a first tubing carrying chilled water to the fan coil and a second tubing carrying return water from the fan coil to the pipe circuit, a baffle mounted at an end of the second tubing proximal to the pipe circuit causing water flowing in the pipe circuit to flow above the baffle to the first tubing and below the baffle to receive return water without mixing the return water with the flow to the first tubing regardless of the direction of water flow in the pipe circuit; and(c) a means to detect a prescribed high relative humidity in the space served by a coil fitting remote from the chiller and means for changing the flow direction in the piping circuit.