EP3273175A1 - Liquid reservoir - Google Patents

Liquid reservoir Download PDF

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Publication number
EP3273175A1
EP3273175A1 EP17181976.6A EP17181976A EP3273175A1 EP 3273175 A1 EP3273175 A1 EP 3273175A1 EP 17181976 A EP17181976 A EP 17181976A EP 3273175 A1 EP3273175 A1 EP 3273175A1
Authority
EP
European Patent Office
Prior art keywords
liquid
interspace
internal space
reservoir
adjacent
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Withdrawn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
EP17181976.6A
Other languages
German (de)
English (en)
French (fr)
Inventor
Jozef Predny
Lubomir Kurpel
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.)
Acsc SRO
Original Assignee
Acsc SRO
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 Acsc SRO filed Critical Acsc SRO
Publication of EP3273175A1 publication Critical patent/EP3273175A1/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/18—Water-storage heaters
    • F24H1/181—Construction of the tank
    • F24H1/182—Insulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/18—Water-storage heaters
    • F24H1/185—Water-storage heaters using electric energy supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/0005—Details for water heaters
    • F24H9/001—Guiding means
    • F24H9/0015—Guiding means in water channels
    • 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
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D2020/0065—Details, e.g. particular heat storage tanks, auxiliary members within tanks
    • F28D2020/0082—Multiple tanks arrangements, e.g. adjacent tanks, tank in tank

Definitions

  • the present invention relates to an arrangement of a reservoir system for liquid having a temperature different from the ambient temperature, provided with an internal storage space for liquid, at least one interspace, a source of thermal energy, a liquid inlet and a liquid outlet.
  • the conventional heated liquid reservoirs are provided with external thermal insulation, usually consisting of fibrous or foam material having thickness from 6 to 12 cm, showing significant resistance towards heat transfer and serving as a means against water condensation on the surface of a storage vessel when filling the reservoir with cold water.
  • the said thermal insulation does not stop but only reduces the heat transfer from the vessel with heated liquid to colder surrounding environment.
  • heated liquid reservoirs known in the state of the art which usually employ free convections, the effect of thermal layering along the height of the vessel occurs.
  • thermal losses do not prevent substantially fast reduction of temperature in the hot water reservoir without energy supply. The greater the difference between the heated water reservoir temperature and the ambient temperature, the greater the irreversible energy losses from liquid to the surrounding environment.
  • Thermal source for water heating is usually an electric heating spiral or optionally a gas burner, however, thermal energy may be supplied by means of any other heat-carrying medium, such as hot steam. Heating source usually provided with a control circuit maintains the desired temperature level of the stored liquid.
  • the object of the present invention is to propose an arrangement of reservoir for liquid having different temperature than the ambient temperature, in order to reduce thermal losses to the minimum.
  • the above-mentioned object of the invention is met by an arrangement of liquid reservoir with a liquid inlet, a liquid circuit and an internal space defined by a housing, comprising the stored liquid and thermal energy supply, characterized in that the internal space is surrounded by at least one interspace, wherein each interspace is defined by two housings spaced apart from each other, and connected by means of at least one connecting element for liquid flow with the adjacent spaces, which are the adjacent interspaces or the adjacent internal space, wherein the liquid inlet is connected to the external interspace, while the liquid outlet is guided outside the internal space.
  • Each interspace is connected by the connecting means to the adjacent interspace and the last internal interspace is connected by the connecting means with the internal space of the reservoir.
  • the connecting means may preferably be a tube or a simple opening in the upper part of the adjacent interspace.
  • the liquid inlet is connected to the bottom part of the external interspace and the liquid outlet is provided in the upper part of the internal space.
  • each connecting element prefferably has an input in the upper part of the interspace and the output in the bottom part of the following adjacent interspace or adjacent internal space.
  • the thermal energy passing through the housing of the internal space which is usually expected to have losses, remains trapped in liquid in the interspaces between the housings.
  • the thermal gradient between liquid in the external interspace and the external surroundings of the reservoir is also lower.
  • Liquid in each interspace reduces the temperature difference between the interspace and external environment, and captures the thermal energy passing through the reservoir housing.
  • the number of interspaces depends on the temperature and volume of stored liquid. For domestic hot water reservoirs, it seems that 2 or 3 interspaces are enough. In industrial applications, multiple interspaces are required.
  • the present heated liquid reservoir has an internal space 1 for liquid storage with a thermal energy source 2 .
  • the walls of the reservoir consist of two housings 3 spaced apart from each other.
  • the housings 3 define an interspace 4 therebetween, surrounding the internal space 1 , preferably from all sides.
  • a liquid inlet 5 of the reservoir is connected to the bottom part of the interspace 4 .
  • the interspace 4 is connected to the internal space 1 of the reservoir by means of the connecting element 6 .
  • the connecting element 6 has the input in the upper part of the interspace 4 and it is terminated into the bottom part of the internal space 1 of the reservoir.
  • the liquid outlet 7 is then provided in the upper part of the internal space 1 of the reservoir.
  • Outlets of liquid from the particular interspaces or the internal space 1 are preferably provided in the upper parts thereof, in order to take advantage of the water layering effect in the interspace 4 as well as in the internal space 1 for heating the liquid.
  • the liquid supplies are preferably provided in the bottom part of the interspace 4 or the internal space 1 with the purpose of liquid circulation.
  • the reservoir for preheating of liquid consists of four housings 3 spaced apart, defining the internal space 1 and three interspaces 4 therebetween, connected together by means of the connecting element 7 .
  • the interspaces 4 are arranged in layers so that the internal space 1 is surrounded by exactly one interspace 4 and this first interspace 4 is surrounded by the second interspace 4 , etc. so that each next interspace 4 surrounds the previous interspaces 4 and the internal space 1 .
  • the Fig. 3 shows an exemplary embodiment of the heated liquid reservoir, where the internal space 1 is only partially surrounded by the adjacent interspace 4 , thus part of the housing 3 of the internal space 1 is also the external housing 3 of the reservoir.
  • This arrangement may be preferably used for reducing the production costs.
  • the temperature gradient between the particular interspaces 4 or between the external environment and the interspace 4 or the internal space 1 decreases.
  • the amount of thermal energy leaking as loss energy into the surrounding environment is determined by the difference between temperature of the external interspace 4 , the temperature of surroundings and quality of thermal insulation.
  • the hot water reservoir is placed in an environment with temperature higher than the temperature of the supplied water, no thermal losses occur, only thermal gains.
  • the higher the number of interspaces the greater the production costs, and their number is thus limited by a suitable compromise between the amount of acceptable heat losses and the economic effectivity of production.
  • the present invention is intended for use in liquid systems for storage tanks, for domestic or industrial preparation of hot utility water.

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)
  • Cookers (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
EP17181976.6A 2016-07-18 2017-07-18 Liquid reservoir Withdrawn EP3273175A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CZ2016-439A CZ2016439A3 (cs) 2016-07-18 2016-07-18 Zásobník ohřáté kapaliny

Publications (1)

Publication Number Publication Date
EP3273175A1 true EP3273175A1 (en) 2018-01-24

Family

ID=59676939

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17181976.6A Withdrawn EP3273175A1 (en) 2016-07-18 2017-07-18 Liquid reservoir

Country Status (2)

Country Link
EP (1) EP3273175A1 (cs)
CZ (1) CZ2016439A3 (cs)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2592026A (en) * 2020-02-12 2021-08-18 Singh Nagi Jaskiran An electric boiler

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB199855A (en) * 1922-04-10 1923-07-05 William Ranson Cooper Improvements in apparatus for heating water or other liquids
FR1341893A (fr) * 1962-12-19 1963-11-02 Chauffe-eau électrique à accumulation
US4242569A (en) * 1978-04-24 1980-12-30 Kayser William M Multiple tank electric water heater

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1466239A (en) * 1974-02-19 1977-03-02 Imi Santon Ltd Thermally insulated hot water storage container
US4974551A (en) * 1989-02-16 1990-12-04 Nelson Thomas E Water heater and method of fabricating same
CN201772614U (zh) * 2010-03-25 2011-03-23 方雅 一种多水箱节能开水器

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB199855A (en) * 1922-04-10 1923-07-05 William Ranson Cooper Improvements in apparatus for heating water or other liquids
FR1341893A (fr) * 1962-12-19 1963-11-02 Chauffe-eau électrique à accumulation
US4242569A (en) * 1978-04-24 1980-12-30 Kayser William M Multiple tank electric water heater

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2592026A (en) * 2020-02-12 2021-08-18 Singh Nagi Jaskiran An electric boiler
GB2592026B (en) * 2020-02-12 2023-12-06 Singh Nagi Jaskiran An electric boiler

Also Published As

Publication number Publication date
CZ307070B6 (cs) 2017-12-27
CZ2016439A3 (cs) 2017-12-27

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