GB2160628A - Improvement in or relating to shower heaters - Google Patents

Improvement in or relating to shower heaters Download PDF

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Publication number
GB2160628A
GB2160628A GB08515526A GB8515526A GB2160628A GB 2160628 A GB2160628 A GB 2160628A GB 08515526 A GB08515526 A GB 08515526A GB 8515526 A GB8515526 A GB 8515526A GB 2160628 A GB2160628 A GB 2160628A
Authority
GB
United Kingdom
Prior art keywords
water
heater
waste
heat exchanger
supply
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Withdrawn
Application number
GB08515526A
Other versions
GB8515526D0 (en
Inventor
Martin W Dalton
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Triton Aquatherm Ltd
Original Assignee
Triton Aquatherm Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Triton Aquatherm Ltd filed Critical Triton Aquatherm Ltd
Publication of GB8515526D0 publication Critical patent/GB8515526D0/en
Publication of GB2160628A publication Critical patent/GB2160628A/en
Withdrawn legal-status Critical Current

Links

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
    • F24D17/00—Domestic hot-water supply systems
    • F24D17/0005—Domestic hot-water supply systems using recuperation of waste heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0012—Recuperative heat exchangers the heat being recuperated from waste water or from condensates
    • 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]
    • Y02B30/18—Domestic hot-water supply systems using recuperated or waste heat
    • 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]
    • Y02B30/56—Heat recovery units

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  • 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)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Abstract

A method and apparatus is described for improving the efficiency of instantaneous water heaters used to supply hot water to shower heads in which the heated waste water is collected and used to preheat the water supply to the heater by use of a heat exchanger positioned below the waste water outlet. <IMAGE>

Description

SPECIFICATION Improvement in or relating to shower heaters The present invention is concerned with improving the efficiency of shower heaters through the utilisation of heat from warmed waste water.
Water that has been heated by an instantaneous water heater and used, for example, in a shower bath installation, is generally collected in a receptacle from whence it flows to waste. The waste water is, however, still warm and therefore the energy used in heating the water to that temperature may be regarded as wasted.
We have now found that the efficiency of an instaneous water heater, in terms of the amount of energy required to heat the water to a predetermined temperature, can be significantly improved by providing that the supply of water to the heater is taken from the mains and passed through a heat exchanger positioned to abstract heat from heated waste water. In this way the water supply to the heater is preheated and therefore requires less energy from the heater to raise the water to the required temperature. It is clear, of course, that the increased efficiency will only be noted after the heated waste water has passed through the heat exchanger.
Accordingly, therefore, the present invention provides a method for heating water in which water from a supply thereof is heated by an instantaneous water heater and subsequently runs to waste wherein the water supplied to the heater first passes through a heat exchanger positioned to extract heat from the said heated water running to waste.
From another aspect the invention provides an apparatus for heating water comprising a water heater, including a cold water inlet and a hot water outlet, a water supply to the said inlet, means for collecting water from the said water heater after use, said means including an outlet for waste water and a heat exchanger positioned to receive water from the said outlet and to extract heat therefrom and wherein the said water supply is directed through the heat exchanger during its passage to the said heater.
One embodiment of the invention will now be described with reference to the accompanying drawing.
The drawing is a diagrammatic representation of a shower bath assembly embodying the present invention.
An instantaneous water heater 1 provides heated water to a shower assembly generally indicated at 2. Water to the heater 1 is provided by a main supply 5 which reaches the heater via supply pipes 3. Heated water from the shower assembly 2 collects in the base of the shower tray 6 to form a pool 7 which runs away to waste through pipe 8. A heat exchanger 4 is positioned below waste pipe 8 to receive water therefrom and includes an outlet 9. Mains water flows through the heat exchanger 4 to supply pipes 3.
Heat exchanger 4 abstracts heat from the waste water, received in tray 6 from shower 2, as it flows through pipe 8. The abstracted heat is used to raise the temperature of the mains water supply which enters the heat exchanger through pipe 5 and leaves through supply pipe 3 to heater 1, thus preheating the water supply. The cooled waste water leaves heat exchanger 4 through outlet 9 and runs to waste.
1. A method for heating water in which water from a supply thereof is heated by an instantaneous water heater and subsequently runs to waste wherein the water supplied to the heater first passes through a heat exchanger positioned to extract heat from the said heated water running to waste.
2. A method according to claim 1 wherein the water heater supplies heated water to a shower head and the water therefrom collects in a container including a waste water outlet and the heat exchanger is positioned adjacent the said waste water outlet to receive water therefrom.
3. A method for heating water substantially as herein described.
4. An apparatus for heating water comprising a water heater, including a cold water inlet and a hot water outlet, a water supply to the said inlet, means for collecting water from the said water heater after use, said means including an outlet for waste water and a heat exchanger positioned to receive water from the said outlet and to extract heat therefrom and wherein the said water supply is directed through the heat exchanger during its passage to the said heater.
5. Apparatus according to claim 4 wherein the water heater is an instantaneous water heater and the hot water outlet therefrom directs water to a shower head, the means for collecting water from the shower head being a shower tray.
6. Apparatus for heating water substantially as herein described with reference to the drawing.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (6)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Improvement in or relating to shower heaters The present invention is concerned with improving the efficiency of shower heaters through the utilisation of heat from warmed waste water. Water that has been heated by an instantaneous water heater and used, for example, in a shower bath installation, is generally collected in a receptacle from whence it flows to waste. The waste water is, however, still warm and therefore the energy used in heating the water to that temperature may be regarded as wasted. We have now found that the efficiency of an instaneous water heater, in terms of the amount of energy required to heat the water to a predetermined temperature, can be significantly improved by providing that the supply of water to the heater is taken from the mains and passed through a heat exchanger positioned to abstract heat from heated waste water. In this way the water supply to the heater is preheated and therefore requires less energy from the heater to raise the water to the required temperature. It is clear, of course, that the increased efficiency will only be noted after the heated waste water has passed through the heat exchanger. Accordingly, therefore, the present invention provides a method for heating water in which water from a supply thereof is heated by an instantaneous water heater and subsequently runs to waste wherein the water supplied to the heater first passes through a heat exchanger positioned to extract heat from the said heated water running to waste. From another aspect the invention provides an apparatus for heating water comprising a water heater, including a cold water inlet and a hot water outlet, a water supply to the said inlet, means for collecting water from the said water heater after use, said means including an outlet for waste water and a heat exchanger positioned to receive water from the said outlet and to extract heat therefrom and wherein the said water supply is directed through the heat exchanger during its passage to the said heater. One embodiment of the invention will now be described with reference to the accompanying drawing. The drawing is a diagrammatic representation of a shower bath assembly embodying the present invention. An instantaneous water heater 1 provides heated water to a shower assembly generally indicated at 2. Water to the heater 1 is provided by a main supply 5 which reaches the heater via supply pipes 3. Heated water from the shower assembly 2 collects in the base of the shower tray 6 to form a pool 7 which runs away to waste through pipe 8. A heat exchanger 4 is positioned below waste pipe 8 to receive water therefrom and includes an outlet 9. Mains water flows through the heat exchanger 4 to supply pipes 3. Heat exchanger 4 abstracts heat from the waste water, received in tray 6 from shower 2, as it flows through pipe 8. The abstracted heat is used to raise the temperature of the mains water supply which enters the heat exchanger through pipe 5 and leaves through supply pipe 3 to heater 1, thus preheating the water supply. The cooled waste water leaves heat exchanger 4 through outlet 9 and runs to waste. CLAIMS
1. A method for heating water in which water from a supply thereof is heated by an instantaneous water heater and subsequently runs to waste wherein the water supplied to the heater first passes through a heat exchanger positioned to extract heat from the said heated water running to waste.
2. A method according to claim 1 wherein the water heater supplies heated water to a shower head and the water therefrom collects in a container including a waste water outlet and the heat exchanger is positioned adjacent the said waste water outlet to receive water therefrom.
3. A method for heating water substantially as herein described.
4. An apparatus for heating water comprising a water heater, including a cold water inlet and a hot water outlet, a water supply to the said inlet, means for collecting water from the said water heater after use, said means including an outlet for waste water and a heat exchanger positioned to receive water from the said outlet and to extract heat therefrom and wherein the said water supply is directed through the heat exchanger during its passage to the said heater.
5. Apparatus according to claim 4 wherein the water heater is an instantaneous water heater and the hot water outlet therefrom directs water to a shower head, the means for collecting water from the shower head being a shower tray.
6. Apparatus for heating water substantially as herein described with reference to the drawing.
GB08515526A 1984-06-23 1985-06-19 Improvement in or relating to shower heaters Withdrawn GB2160628A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB848416073A GB8416073D0 (en) 1984-06-23 1984-06-23 Shower heaters

Publications (2)

Publication Number Publication Date
GB8515526D0 GB8515526D0 (en) 1985-07-24
GB2160628A true GB2160628A (en) 1985-12-24

Family

ID=10562895

Family Applications (2)

Application Number Title Priority Date Filing Date
GB848416073A Pending GB8416073D0 (en) 1984-06-23 1984-06-23 Shower heaters
GB08515526A Withdrawn GB2160628A (en) 1984-06-23 1985-06-19 Improvement in or relating to shower heaters

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB848416073A Pending GB8416073D0 (en) 1984-06-23 1984-06-23 Shower heaters

Country Status (1)

Country Link
GB (2) GB8416073D0 (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2200439A (en) * 1987-01-21 1988-08-03 Caradon Mira Ltd Instantaneous water heaters for showers
GB2232749A (en) * 1989-05-31 1990-12-19 Matthew Stephen Rutherford Water heaters using waste heat: cleaning heat exchangers
EP0492031A1 (en) * 1990-12-21 1992-07-01 Innovazioni Tecnologiche Di Flavio Dal Bo A heat recuperation device for sanitary installations
GB2342146A (en) * 1998-08-21 2000-04-05 Robert Findlay Heat exchanger
GB2376517A (en) * 2001-04-21 2002-12-18 Lubor Schiller Energy recovery system
WO2008034321A1 (en) * 2006-09-15 2008-03-27 Shaohua Su Water heater special for bathroom
CN100390464C (en) * 2005-04-30 2008-05-28 陈非 Energy saving bath room capable of self heating water
ES2330284A1 (en) * 2007-03-08 2009-12-07 David Invesyde, S.L. Reducing energy saving device for hot water consumption (Machine-translation by Google Translate, not legally binding)
WO2013020191A1 (en) * 2011-08-11 2013-02-14 Brucoli Fernando Augusto Purchio Sanitation compartment for recovering the heat from hot wastewater during bathing
ITVR20120192A1 (en) * 2012-09-28 2014-03-29 Spinazza S N C Di Spinazza Robert O E Daniele EQUIPMENT FOR RECOVERY OF DISCHARGE WATER HEAT
US8973178B2 (en) 2009-02-06 2015-03-10 Joulia Ag Heat exchanger
EP2369243B1 (en) 2010-03-25 2018-07-11 Delta Systemtechnik GmbH Method for heating drinking water, building technology system, domestic station and building

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2052698A (en) * 1979-03-21 1981-01-28 Burns L Domestic Hot Water Supply

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2052698A (en) * 1979-03-21 1981-01-28 Burns L Domestic Hot Water Supply

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2200439A (en) * 1987-01-21 1988-08-03 Caradon Mira Ltd Instantaneous water heaters for showers
GB2200439B (en) * 1987-01-21 1991-01-02 Caradon Mira Ltd Improvements in or relating to showers
GB2232749A (en) * 1989-05-31 1990-12-19 Matthew Stephen Rutherford Water heaters using waste heat: cleaning heat exchangers
EP0492031A1 (en) * 1990-12-21 1992-07-01 Innovazioni Tecnologiche Di Flavio Dal Bo A heat recuperation device for sanitary installations
GB2342146A (en) * 1998-08-21 2000-04-05 Robert Findlay Heat exchanger
GB2376517A (en) * 2001-04-21 2002-12-18 Lubor Schiller Energy recovery system
GB2376517B (en) * 2001-04-21 2003-05-07 Lubor Schiller Energy recovery system
CN100390464C (en) * 2005-04-30 2008-05-28 陈非 Energy saving bath room capable of self heating water
WO2008034321A1 (en) * 2006-09-15 2008-03-27 Shaohua Su Water heater special for bathroom
US8333169B2 (en) 2006-09-15 2012-12-18 Shaohua Su Water heater special for bathroom
ES2330284A1 (en) * 2007-03-08 2009-12-07 David Invesyde, S.L. Reducing energy saving device for hot water consumption (Machine-translation by Google Translate, not legally binding)
US8973178B2 (en) 2009-02-06 2015-03-10 Joulia Ag Heat exchanger
EP2369243B1 (en) 2010-03-25 2018-07-11 Delta Systemtechnik GmbH Method for heating drinking water, building technology system, domestic station and building
EP4220022A1 (en) * 2010-03-25 2023-08-02 Uponor Innovation AB Method for heating drinking water, domestic engineering system, residence station and building
WO2013020191A1 (en) * 2011-08-11 2013-02-14 Brucoli Fernando Augusto Purchio Sanitation compartment for recovering the heat from hot wastewater during bathing
ITVR20120192A1 (en) * 2012-09-28 2014-03-29 Spinazza S N C Di Spinazza Robert O E Daniele EQUIPMENT FOR RECOVERY OF DISCHARGE WATER HEAT

Also Published As

Publication number Publication date
GB8416073D0 (en) 1984-07-25
GB8515526D0 (en) 1985-07-24

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Legal Events

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WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)