Dual-use ram-primary/regen hx

Patent metadata

Field	Value
Publication number	US-2016305683-A1
Application number	US-201615096486-A
Country	US
Kind code	A1
Filing date	Apr 12, 2016
Priority date	Apr 15, 2015
Publication date	Oct 20, 2016
Grant date	—

Abstract

A regenerative heat exchanger includes an inlet and an outlet in communication with the inlet. The heat exchanger is configured to operate in two modes. A first mode uses only an ambient flow to cool a hot flow and a second mode uses both the ambient flow and a regenerative flow to cool the hot flow.

First claim

We claim:

1 . A heat exchanger, comprising:
an inlet; and an outlet in communication with the inlet, wherein the heat exchanger is configured to operate in two modes:
wherein a first mode uses only an ambient flow to cool a hot flow;
wherein a second mode uses both the ambient flow and a regenerative flow to cool the hot flow.

2 . The heat exchanger of claim 1 , wherein the heat exchanger is configured to operate in three modes.

3 . The heat exchanger of claim 1 , wherein the heat exchanger is configured to operate in a closed mode, a partially open mode, and a fully open mode.

4 . The heat exchange of claim 1 , wherein the ambient flow provides heat exchange with an entire cross section of the hot flow.

5 . The heat exchanger of claim 1 , wherein the ambient flow provides heat exchange with a first cross section of the hot flow and the regenerative flow provides heat exchange with a second cross section of the hot flow.

6 . The heat exchanger of claim 5 , wherein the first cross section is larger than the second cross section.

7 . The heat exchanger of claim 5 , wherein the first cross section is smaller than the second cross section.

8 . A cross-flow heat exchanger, comprising:
an inlet; an outlet in communication with the inlet; wherein the heat exchanger is configured to enable heat exchange between a hot flow and a mixture of ambient flow and regenerative flow; wherein the heat exchanger is configured to vary the amount of regenerative flow from zero flow to full flow.

9 . The heat exchanger of claim 8 , further comprising a control device to control an amount of regenerative flow into the heat exchanger.

10 . The heat exchanger of claim 9 , wherein the control device operates in a closed mode, a partially open mode, and a fully open mode.

11 . The heat exchanger of claim 9 , wherein the control device adjusts a size of an opening for passage of the regenerative flow into the heat exchanger.

12 . The heat exchanger of claim 8 , wherein the ambient flow moves in a cross flow direction to the hot flow.

13 . The heat exchanger of claim 8 , wherein the regenerative flow moves in a cross flow direction to the hot flow.

14 . An environmental control system (ECS), comprising:
a regenerative heat exchanger configured to put an ambient flow in cross-flow communication with a hot flow; wherein the regenerative heat exchanger is configured to provide varying mixtures of ambient flow and regenerative flow in heat exchange relationship with the hot flow.

15 . The ECS of claim 14 , wherein a load provides the regenerative flow and the load is one of an aircraft cabin and electronics.

16 . The ECS of claim 15 , wherein the regenerative flow exits the cabin.

17 . The ECS of claim 14 , wherein the regenerative heat exchanger is configured to put the regenerative flow in cross-flow communication with the hot flow.

18 . The ECS claim 14 , wherein the ambient flow moves parallel with the regenerative flow.

19 . The ECS of claim 14 , wherein an amount of regenerative flow varies between zero flow and full flow.

20 . The ECS of claim 14 , wherein the regenerative flow passes within and at a side of the heat exchanger that is adjacent one of an inflow of the hot flow and an outflow of the hot flow.

Assignees

• Honeywell Int Inc

Inventors

• Zug Andrew

Classifications

• F24F2012/008

  cyclic routing supply and exhaust air · CPC title

• F28F13/00 Primary

  Arrangements for modifying heat-transfer, e.g. increasing, decreasing (F28F1/00 - F28F11/00 take precedence) · CPC title

• F24F12/006 Primary

  using an air-to-air heat exchanger (F24F12/002 takes precedence) · CPC title

• F28F27/02 Primary

  for controlling the distribution of heat-exchange media between different channels ({static flow control means in header boxes F28F9/026}; arrangements of guide plates or guide vanes F28F9/22, F28F25/12) · CPC title

• F28D21/0001

  Recuperative heat exchangers · CPC title