Water-savings adiabatic spray system

Patent metadata

Field	Value
Publication number	US-11679997-B2
Application number	US-202017013030-A
Country	US
Kind code	B2
Filing date	Sep 4, 2020
Priority date	May 27, 2016
Publication date	Jun 20, 2023
Grant date	Jun 20, 2023

Abstract

A water savings system and method for reducing the amount of water needed for adiabatic cooling including the use of a softener and a reverse osmosis device, in which tap water, softened if necessary, is delivered to a reverse osmosis device and softened water alone, reverse osmosis reject water, or softened water combined with reverse osmosis reject water is delivered to spray nozzles for cooling, and reverse osmosis pure water is stored and used periodically to flush the coils to inhibit and/or prevent corrosion from dissolved salts and other solids in the spray water.

First claim

The invention claimed is:

1. A method for inhibiting scaling and corrosion of metal surfaces in a heat exchanger, comprising:
delivering softened water to a reverse osmosis device and storing softened RO permeate water from said reverse osmosis device;
spraying softened water into an air flow entering said heat exchanger for adiabatic pre-cooling of said air flow during a cooling operation;
delivering said stored softened, RO-permeate water to an outside surface of coils of said heat exchanger during a flush operation.

2. A method according to claim 1 , further comprising:
wherein said softened water sprayed into an air flow entering said heat exchanger for adiabatic pre-cooling of said air flow during a cooling operation is first delivered to said reverse osmosis device, and softened RO-reject water from said reverse osmosis device is delivered to said spray nozzles for said cooling operation.

3. A method according to claim 1 , wherein said softened water sprayed into an air flow entering said heat exchanger for adiabatic pre-cooling of said air flow during a cooling operation includes softened RO-permeate water.

4. A method according to claim 1 , wherein softened RO-reject water from said reverse osmosis device is combined with softened water received directly from a water softener and sprayed into an air flow entering said heat exchanger for adiabatic pre-cooling of said air flow during a cooling operation.

5. A method according to claim 1 , wherein softened RO-reject water from said reverse osmosis device is combined with softened water received directly from a water softener and stored in a combination and storage tank, and water from said combination and storage tank is sprayed into an air flow entering said heat exchanger for adiabatic pre-cooling of said air flow during a cooling operation.

6. A method according to claim 1 , wherein said softened RO-permeate water is stored in a pressurized tank.

7. A method according to claim 4 , wherein said softened RO-permeate water is stored in a pressurized tank.

8. A method according to claim 1 , wherein softened RO-reject water from said reverse osmosis device is sent to drain and water sprayed into an air flow entering said heat exchanger for adiabatic pre-cooling of said air flow during a cooling operation is received directly from a water softener.

Assignees

• Evapco Inc

Inventors

• Lane John W
• Vadder Davey J

Classifications

• C02F1/42

  by ion-exchange (ion-exchange in general B01J) · CPC title

• C02F1/58

  by removing specified dissolved compounds (using ion-exchange C02F1/42; softening water C02F5/00) · CPC title

• C02F5/086

  Condensed phosphates · CPC title

• C02F5/083

  Mineral agents · CPC title

• C02F9/00

  Multistage treatment of water, waste water or sewage · CPC title