Method for adjusting several parallel connected heat exchangers

Patent metadata

Field	Value
Publication number	US-9488379-B2
Application number	US-201213487799-A
Country	US
Kind code	B2
Filing date	Jun 4, 2012
Priority date	Mar 22, 2003
Publication date	Nov 8, 2016
Grant date	Nov 8, 2016

Abstract

A method is provided for adjusting several parallel connected heat exchangers supplied with a coolant medium. The aim of the invention is to simplify the adjustment. For this purpose, the method consists in a) determining a specific value of heat requirement for each heat exchanger in a predetermined time period; b) comparing the specific values of all heat exchangers therebetween and c) in modifying the adjustment of the heat exchanger having the lowest specific value of heat requirement in such a way that the heat requirement thereof is increased.

First claim

The invention claimed is:

1. A method for adjusting several parallel connected heat exchangers, which are supplied with a heat carrying medium, comprising the steps of:
a. detecting for each heat exchanger an opening ratio of the heat exchanger during a predetermined period by a valve position or a desired value deviation;
b. comparing the opening ratios of all heat exchangers with each other; and
c. changing a setting of the heat exchanger with the smallest opening ratio in a manner which decreases the flow amount.

2. The method according to claim 1 , further comprising the steps of determining a common return temperature for the heat exchangers before opening or closing one of the heat exchangers, determining the common return temperature after opening or closing said one of the heat exchangers, comparing the common return temperature before opening or closing said one of the heat exchangers with the common return temperature after opening or closing said one of the heat exchangers, and, when the common return temperature increases as a result of each opening of said one of the heat exchangers or decreases as a result of each closing of said one of the heat exchangers, changing the setting of said one of the heat exchangers so as to reduce the flow amount of said one of the heat exchangers.

3. The method according to claim 1 , further comprising the step of changing the setting by a change of an amplification in a controller.

4. The method according to claim 1 , further comprising the step of changing the setting by changing a pressure difference over the heat exchanger.

5. The method according to claim 1 , further comprising the step of changing the setting so that the maximum opening width of the valve of the heat exchanger is changed.

6. The method according to claim 1 , further comprising the step of changing the setting by changing the opening times of the valve.

7. The method according to claim 6 , further comprising the step of periodically closing the valve during opening periods, which are determined by a flow amount.

Assignees

• Seerup Joergen
• Gregersen Niels
• Danfoss As

Inventors

• Seerup Joergen
• Gregersen Niels

Classifications

• G05D23/1934

  each space being provided with one sensor acting on one or more control means · CPC title

• F24D3/12

  Tube and panel arrangements for ceiling, wall, or underfloor heating (electric underfloor heating F24D13/02) · CPC title

• F28F2210/10

  Particular layout, e.g. for uniform temperature distribution · CPC title

• Y02B30/762

  Cross-Sectional Technologies · mapped topic

• F24D19/1048 Primary

  Counting of energy consumption · CPC title