GB2301423A - Heat exchanger management system - Google Patents
Heat exchanger management system Download PDFInfo
- Publication number
- GB2301423A GB2301423A GB9505534A GB9505534A GB2301423A GB 2301423 A GB2301423 A GB 2301423A GB 9505534 A GB9505534 A GB 9505534A GB 9505534 A GB9505534 A GB 9505534A GB 2301423 A GB2301423 A GB 2301423A
- Authority
- GB
- United Kingdom
- Prior art keywords
- water
- heat exchanger
- central heating
- pump
- flow rate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 42
- 238000010438 heat treatment Methods 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 230000003068 static effect Effects 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1066—Arrangement or mounting of control or safety devices for water heating systems for the combination of central heating and domestic hot water
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Steam Or Hot-Water Central Heating Systems (AREA)
Abstract
In a combination boiler system for use for central heating and water heating a diverter valve 1 directs hot water flow to a central heating circuit or a water heater heat exchanger 2. A switch attached to the diverter valve 1 is operable to change the electrical connections to a circulating pump 3 depending on whether central heating or water heating is required in order to adjust the pump speed and flow rate to the optimum for each mode of operation.
Description
HEAT EXCHANGER MANAGMENT SYSTEM
This invention relates to a system to manage the water flow in the Heat Exchangers of combination boilers. so as to optimise their efficiency.
In Combination Domestic Boilers the hot water from the 'Gas to
Water' Heat Exchanger is pumped around the central heating circuit when central heating is in use. If there is a demand for domestic hot water the central heating flow is interrupted and the hot water from the 'Gas to Water' Heat Exchanger is diverted from the central heating circuit to the 'Water to
Water' Heat Exchanger. When central heating is not in use and there is a demand for domestic hot water; the pump is started and again the Hot water from the 'Gas to Water' Heat Exchanger is passed through the 'Water to Water' Heat Exchanger'.
To obtain the the maximum heat transfer in the 'Water to Water'
Heat Exchanger the rate of flow of water from the 'Gas to
Water' Heat Exchanger has to be set at an optimum rate. This normally differs from the rate of flow in the central heating system. The conventional practice is to adjust the flow in the "Water to Water" Heat Exchanger by use a flow restrictor, a bypass, or by using two separate pumps for central heating and domestic hot water.
According to the present invention a method has been devised to control the optimum flow of primary hot water through the 'Water to Water' Heat Exchanger by controlling the speed of the pump motor and hence the flow rate. In the central heating mode the pump speed can still operate as normal.
The system operates as follows:- When hot water is demanded, the "Diverter Valve" Fig. 1.1. operates and transfers the flow from the central heating circuit to the 'Water to Water' Heat
Exchanger Fig 1.2. However the flow rate when operating in this mode requires to be fixed; this usually being different from the central heating mode. To achieve this change of flow rate; a switch attached to the "Diverter Valve" is used to electrically change the connections to the pump motor ( Fig 1.2). In this way pump speed is adjusted and thus the water flow rate. Fig. 2 shows the details of the electrical connections between the Diverter Valve Switch Fig.2.1 and the motor Fig,2.2. In this way the speed of the pump when supplying hot water can be set to obtain the optimum heat transfer. This optimum transfer can be observed by monitoring the water temperature at Hot Water Sensor Fig.l.4.
Claims (6)
1. This pump control system acts as a dynamic method of controlling the primary water flow rate through the "Water to
Water" Heat exchanger of combination boilers
2. The system in Claim 1 is compatible with existing boiler technology and avoids the use of separate pumps for the central heating and the domestic hot water or the fabrication of a special static hydraulic flow restrictor or bypass.
3. The change of pump speed can be controlled by the existing change over valve.
4. The overall efficiency of the boiler is improved due to the optimum flow rate in the "Water to Water" Heat Exchanger and also the lower temperature of the return water to the "Gas to
Water" Heat Exchanger.
5. The Flexibility of the system enables efficiency to be optimised for boilers in particular installations
6. As the pump does not have to overcome any restriction it will consume less power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9505534A GB2301423A (en) | 1995-03-18 | 1995-03-18 | Heat exchanger management system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9505534A GB2301423A (en) | 1995-03-18 | 1995-03-18 | Heat exchanger management system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB9505534D0 GB9505534D0 (en) | 1995-05-03 |
| GB2301423A true GB2301423A (en) | 1996-12-04 |
Family
ID=10771466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9505534A Withdrawn GB2301423A (en) | 1995-03-18 | 1995-03-18 | Heat exchanger management system |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2301423A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29803540U1 (en) * | 1998-02-28 | 1999-07-15 | Viessmann Werke GmbH & Co., 35108 Allendorf | Gas boiler |
| EP1199530A2 (en) * | 2000-10-16 | 2002-04-24 | WILO GmbH | ECO-button |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106839417A (en) * | 2017-04-05 | 2017-06-13 | 珠海格力电器股份有限公司 | Gas wall-mounted boiler and hot water supply method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1582268A (en) * | 1976-07-12 | 1981-01-07 | Chaffoteaux Et Maury | Hot water installations |
| EP0226246A1 (en) * | 1985-12-04 | 1987-06-24 | Nederlandse Industriele Maatschappij NEFIT B.V. | Device for controlling a hot water supply |
| US5248085A (en) * | 1991-08-23 | 1993-09-28 | Grundfos A/S | Gas boiler |
| EP0692682A1 (en) * | 1994-07-15 | 1996-01-17 | INTEGRA S.r.l. | Boiler in particular of the so-called combined type with prompt delivery of hot sanitary water |
-
1995
- 1995-03-18 GB GB9505534A patent/GB2301423A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1582268A (en) * | 1976-07-12 | 1981-01-07 | Chaffoteaux Et Maury | Hot water installations |
| EP0226246A1 (en) * | 1985-12-04 | 1987-06-24 | Nederlandse Industriele Maatschappij NEFIT B.V. | Device for controlling a hot water supply |
| US5248085A (en) * | 1991-08-23 | 1993-09-28 | Grundfos A/S | Gas boiler |
| EP0692682A1 (en) * | 1994-07-15 | 1996-01-17 | INTEGRA S.r.l. | Boiler in particular of the so-called combined type with prompt delivery of hot sanitary water |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29803540U1 (en) * | 1998-02-28 | 1999-07-15 | Viessmann Werke GmbH & Co., 35108 Allendorf | Gas boiler |
| EP1199530A2 (en) * | 2000-10-16 | 2002-04-24 | WILO GmbH | ECO-button |
| EP1199530A3 (en) * | 2000-10-16 | 2003-09-10 | WILO GmbH | ECO-button |
Also Published As
| Publication number | Publication date |
|---|---|
| GB9505534D0 (en) | 1995-05-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |