# US 2013/0153170 A1 · Precooler/Chiller/Reheater Heat Exchanger System > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0153170 A1 - Document ID: US20130153170A1 - Status: Published application - Kind: A1 - Application number: 13/767,179 - Filed: 2013-02-14 - Published: 2013-06-20 - Earliest claimed: 2009-05-06 - Assignees: API Heat Transfer Inc. - Inventors: Timothy J. Galus - Web page: https://patentgrep.com/patent/US20130153170A1 ## CPC - F25B 29/00: Combined heating and refrigeration systems, e.g. operating alternately or simultaneously - B01D 53/265: {by refrigeration (condensation)} - F24F 3/153: with subsequent heating, i.e. with the air, given the required humidity in the central station, passing a heating element to achieve the required temperature - F28D 9/0093: {Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids} - F28F 3/027: {with openings, e.g. louvered corrugated fins; Assemblies of corrugated strips} - F28F 17/005: {Means for draining condensates from heat exchangers, e.g. from evaporators (F28B9/08 takes precedence)} - F25B: REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS - B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28) - F24F: AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING (removing dirt or fumes from areas where they are produced B08B15/00; vertical ducts for carrying away waste gases from buildings E04F17/02; tops for chimneys or ventilating shafts, terminals for flues F23L17/02) - F28D: HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT (fluid heaters having heat generating means and heat transferring means F24H; furnaces F27; details of heat-exchange apparatus of general) - F28F: DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION (water and air traps, air venting F16) ## Abstract A system for drying and tempering flowing air that has been compressed to a super atmospheric level prior to treatment by the system. The system includes a precooler and reheater core and a chiller core disposed in adjacent relation for receiving flowing air serially therethrough. A moisture removal section is disposed adjacent to the chiller core for removing entrained moisture from the flowing air. The moisture removal section is defined by sidewalls. The moisture removal section has a demister core disposed therein. The demister core comprises a plurality of fins configured to create an undulating flow through the demister core. The demister core is disposed at an angle with respect to at least one of the sidewalls to create an enlarged entrance area and an enlarged exit area. ## Claims ### Claim 1 A system for drying and tempering flowing air, comprising: a housing; a precooler and reheater core and a chiller core disposed in adjacent relation in the housing for receiving the flowing air serially therethrough; a moisture removal section disposed in the housing adjacent to the chiller core for removing entrained moisture from the flowing air, the moisture removal section defined by sidewalls, the moisture removal section having a demister core disposed therein, the demister core comprising a plurality of fins configured to create an undulating flow through the demister core; and, means for providing refrigerant to a second side of the chiller core. ### Claim 2 (depends on 1) The system of claim 1, wherein the demister core is disposed at an angle with respect to at least one of the sidewalls to form an enlarged entrance area in the moisture removal section. ### Claim 3 (depends on 1) The system of claim 1, wherein the demister core is angled to create a generally triangular shaped space in the moisture removal section. ### Claim 4 (depends on 1) The system of claim 1, further comprising a first crossover manifold for conveying air from the precooler and reheater core to a first side of the chiller core. ### Claim 5 (depends on 4) The system of claim 4, wherein the first crossover manifold is disposed in an upper portion of the precooler and reheater core. ### Claim 6 (depends on 1) The system of claim 1, further comprising a second crossover manifold for conveying air from said moisture removal section to a second side of the precooler and reheater core. ### Claim 7 (depends on 6) The system of claim 6, wherein the second crossover manifold is disposed inside the housing across the top of the moisture removal section, chiller core, and precooler and reheater core. ### Claim 8 (depends on 1) The system of claim 1, further comprising an inlet manifold for conveying warm, moist air to the first side of the precooler and reheater core. ### Claim 9 (depends on 1) The system of claim 1, further comprising an outlet manifold for conveying dried reheated air from the second side of the precooler and reheater core. ### Claim 10 (depends on 1) The system of claim 1, wherein the demister core is formed from a plurality of stamped sheets arranged to form a matrix of offset rectangular fins. ### Claim 11 A system for drying and tempering flowing air, comprising: a first heat exchanger for precooling and subsequently reheating the flowing air; a second heat exchanger for chilling the flowing air below the incoming dew point thereof to remove moisture therefrom, the second heat exchanger disposed adjacent to the first heat exchanger such that the flowing air passes serially therethrough; a moisture removal section having an inlet and an outlet, the moisture removal section disposed adjacent to the second heat exchanger for removing entrained moisture from the air after it exits the second heat exchanger, the moisture removal section defined by sidewalls, the moisture removal section having a demister core disposed therein, the demister core disposed at an angle relative to at least one of the sidewalls to define an enlarged entrance area adjacent to the inlet and an enlarged exit area disposed adjacent to the outlet; means for providing refrigerant to the second heat exchanger including a distributor in fluid communication with the second heat exchanger for providing refrigerant to a second side of the second heat exchanger and a collector in fluid communication with the second heat exchanger for collecting spent refrigerant from the second side of the second heat exchanger; wherein said flowing air is compressed to a super atmospheric pressure prior to treatment by the system. ### Claim 12 (depends on 11) The system of claim 11, further comprising refrigerating means for receiving the spent refrigerant, recompressing the refrigerant, and providing compressed refrigerant to the distributor. ### Claim 13 (depends on 11) The system of claim 11, further comprising a first crossover manifold for conveying air from the first heat exchanger to a first side of the second heat exchanger. ### Claim 14 (depends on 13) The system of claim 13, wherein the first crossover manifold is disposed in an upper portion of the first heat exchanger. ### Claim 15 (depends on 14) The system of claim 14, further comprising a second crossover manifold for conveying air from said moisture removal section to a second side of the first heat exchanger. ### Claim 16 (depends on 15) The system of claim 15, wherein the second crossover manifold is disposed across the top of the moisture removal section, the second heat exchanger, and the first heat exchanger. ### Claim 17 (depends on 11) The system of claim 11, further comprising an inlet manifold for conveying warm, moist air to the first side of the first heat exchanger. ### Claim 18 (depends on 11) The system of claim 11, further comprising an outlet manifold for conveying dried reheated air from the second side of the first heat exchanger. ### Claim 19 A system for drying and tempering flowing air, comprising: a first heat exchanger for precooling and subsequently reheating the flowing air; a second heat exchanger for chilling the flowing air below the incoming dew point thereof to remove moisture therefrom, the second heat exchanger disposed adjacent to the first heat exchanger such that flowing air passes serially therethrough; a moisture removal section having an inlet and an outlet, the moisture removal section disposed adjacent to the second heat exchanger for removing entrained moisture from the air after it exits the second heat exchanger, the moisture removal section defined by sidewalls, the moisture removal section having a demister core disposed therein, the demister core disposed at an angle relative to at least one of the sidewalls to define an enlarged entrance area adjacent to the inlet and an enlarged exit area disposed adjacent to the outlet; means for providing refrigerant to a second side of the second heat exchanger; a first crossover manifold for conveying air from the first heat exchanger to a first side of the second heat exchanger; a second crossover manifold for conveying air from said moisture removal section to a second side of the first heat exchanger; an inlet manifold for conveying warm, moist air to the first side of the first heat exchanger; an outlet manifold for conveying dried reheated air from the second side of the first heat exchanger wherein said flowing air is compressed to a super atmospheric pressure prior to treatment by the system.