WO2022115029A1 - Agencement d'échangeur de chaleur à eau froide domestique - Google Patents

Agencement d'échangeur de chaleur à eau froide domestique Download PDF

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Publication number
WO2022115029A1
WO2022115029A1 PCT/SE2021/051185 SE2021051185W WO2022115029A1 WO 2022115029 A1 WO2022115029 A1 WO 2022115029A1 SE 2021051185 W SE2021051185 W SE 2021051185W WO 2022115029 A1 WO2022115029 A1 WO 2022115029A1
Authority
WO
WIPO (PCT)
Prior art keywords
cold water
heat exchanger
reservoir tank
thermal reservoir
domestic
Prior art date
Application number
PCT/SE2021/051185
Other languages
English (en)
Inventor
Mats Lundberg
Original Assignee
Mats Lundberg
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 Mats Lundberg filed Critical Mats Lundberg
Publication of WO2022115029A1 publication Critical patent/WO2022115029A1/fr

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
    • F24D12/00—Other central heating systems
    • F24D12/02—Other central heating systems having more than one heat source
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B11/00—Arrangements or adaptations of tanks for water supply
    • E03B11/02—Arrangements or adaptations of tanks for water supply for domestic or like local water supply
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B7/00—Water main or service pipe systems
    • E03B7/04—Domestic or like local pipe systems
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • 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
    • F24D17/02—Domestic hot-water supply systems using heat pumps
    • 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
    • F24D3/00—Hot-water central heating systems
    • F24D3/18—Hot-water central heating systems using heat pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B30/00—Heat pumps
    • F25B30/06—Heat pumps characterised by the source of low potential heat
    • 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
    • F24D2200/00—Heat sources or energy sources
    • F24D2200/11—Geothermal energy
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2339/00—Details of evaporators; Details of condensers
    • F25B2339/04—Details of condensers
    • F25B2339/047—Water-cooled condensers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/02—Compressor control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2116—Temperatures of a condenser
    • F25B2700/21161—Temperatures of a condenser of the fluid heated by the condenser
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • 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]

Definitions

  • the present invention relates to a domestic cold water heat exchanger arrangement and a cold water heat exchanger system.
  • geothermal heat When using geothermal heat to power a residential heating system, for example a heat pump, it is often necessary to supplement the power extracted from the borehole with electrical power from the grid. This is especially true during the winter months when the price of electricity, coincidently, is the highest. Reducing the need for supplementary power from the grid when using geothermal heat, or providing an alternative thereto, is desired.
  • the present invention is at least partially based on the realisation that low temperature water, such as that in a domestic cold water distribution network, may be used as a thermal source in a heat pump providing residential heating. This is beneficial as the cold water distributed to the faucets in a home is cooled, which is often desired, while the heat pump of the cold water heat exchanger feeds heat to the home via a residential heating system, thus reducing the power consumption thereof.
  • the present invention is furthermore based on the realisation that a cold water heat exchanger arrangement may be used in a geothermal heating system instead of using supplementary power from the grid.
  • energy costs may be reduced significantly.
  • a cold water heat exchanger arrangement comprising a heat pump and a thermal reservoir tank, said heat pump being configured to circulate a working medium through a winded tube, arranged inside said thermal reservoir tank, wherein an outlet of said thermal reservoir tank is arranged for connection with a domestic cold water supply, and wherein an inlet of said thermal reservoir tank is arranged for connection with a domestic cold water distribution network, wherein the tank is arranged to receive cold water from said domestic cold water network and transfer said cold water to said domestic cold water supply, wherein said heat pump is arranged to, by means of said winded tube to draw/absorb heat from water in said tank.
  • the working medium is preferably a cooling medium.
  • domestic cold water piping may comprise a domestic cold water supply, a domestic cold water distribution network, and a domestic cold water return line.
  • waste heat held by the domestic cold water may be utilized in powering the heat exchange of the heat pump.
  • the thermal reservoir tank comprises at least one control valve for regulating the flow through the inlet and the outlet.
  • a control valve regulates the flow through the thermal reservoir tank, the temperature of the water held therein may be prevented from dropping so low that the water freezes.
  • the water temperature in the thermal reservoir tank drops low enough to risk freezing, a portion of the water held therein will be discharged therefrom, thus allowing an inflow of new water that is of a higher temperature. This also increases the efficiency of the heat pump connected thereto.
  • the winded tube is arranged to transfer heat to a residential heating system from the cold water in the tank prior to being dispatched into e.g. the home of a user, thus allowing the cold water to always be cold and also boosting the heat pump in its operation.
  • the residential heating system may be connected to the cold water heat exchanger arrangement.
  • the residential heating system may for example be a plurality of radiators through which the working medium of the heat pump is circulated, or an air heater configured to have air heated by the condenser of the heat pump.
  • the cold water heat exchanger arrangement further comprising a control unit configured to control the compressor of the heat pump based on a set of input parameters and a set of ambient parameters.
  • the control unit may for example control the flow rate of the working medium through the heat pump, thus controlling the heat exchange rate between the water held in the thermal reservoir tank and the working medium.
  • control unit is configured to control the at least one control valve based on the set of input parameters and the set of ambient parameters.
  • the thermal reservoir tank comprises a temperature sensor.
  • the set of input parameters comprises a target output temperature of the residential heating system.
  • the target output temperature of the residential heating system connected to the heat pump may be set by a user navigating a user interface.
  • the set of ambient parameters comprises a temperature of the water held in the thermal reservoir tank.
  • the inlet of the thermal reservoir tank is arranged for connection with a domestic cold water supply, and wherein the outlet of the thermal reservoir tank is arranged for connection with a domestic cold water distribution network.
  • water cooled by the winded tube arranged in the thermal reservoir tank may be directed to faucets of a home via the domestic cold water distribution network.
  • the thermal reservoir tank is fed by a domestic cold water supply, such that water directed to the faucets or the return line of the domestic water distribution network through the outlet of the thermal reservoir tank is replaced through the inlet of the thermal reservoir tank by water from the domestic cold water supply.
  • the outlet of the thermal reservoir tank is arranged for connection with a return line of the domestic cold water distribution network.
  • a cold water heat exchanger system comprises a cold water heat exchanger according to the first aspect of the present invention, a domestic cold water supply line and a domestic cold water distribution network having a domestic cold water return line.
  • the inlet of the thermal reservoir tank is directly or indirectly connected to the domestic cold water supply line, and the outlet of the thermal reservoir tank is directly or indirectly connected to the domestic cold water distribution network.
  • the outlet of the thermal reservoir tank is connected with a return line of the domestic cold water distribution network.
  • said thermal reservoir tank is arranged to hold a pre- determined amount of water, preferably the winded tube inside the tank is always exposed to water in said operating condition.
  • the heat pump of the present invention may be a conventional heat pump comprising a condenser, evaporator, compressor and an expansion valve.
  • Figure 1 is a schematic view of a cold water heat exchanger arrangement and a cold water heat exchanger system according to the first and second aspect of the present invention, respectively,
  • Figure 2 is a schematic view of a cold water heat exchanger and a cold water heat exchanger system according to the first and third aspect of the present invention, respectively and
  • Figure 3 is a schematic view of a cold water heat exchanger arrangement and a cold water heat exchanger system according to some embodiments of the present invention.
  • FIG. 1 is a schematic view of a cold water heat exchanger arrangement 100 and a cold water heat exchanger system 1 according to the first and second aspect of the present invention, respectively.
  • the cold water heat exchanger system 1 comprises a cold water heat exchanger 100, a domestic cold water supply line 3 and a domestic cold water distribution network 5 having a domestic cold water return line 7.
  • the cold water heat exchanger comprises a heat pump 101 and a thermal reservoir tank 103.
  • the heat pump 101 comprises a condenser 105, an expansion valve 107, an evaporator (not shown), and a compressor 111, and the compressor 111 is configured to pressurize and circulate a working medium through the condenser 105, the expansion valve 107 , the evaporator (not shown) and the thermal reservoir tank 103.
  • the winded tube 109 is arranged inside the thermal reservoir tank 103, and the thermal reservoir tank 103 comprises an inlet 113 and an outlet 115 connected to domestic cold water piping.
  • the inlet 113 of the thermal reservoir tank 103 is connected to the domestic cold water supply line 3
  • the outlet 115 of the thermal reservoir tank 103 is connected to the domestic cold water distribution network 5, and to the return line 7 of the domestic cold water distribution network 5.
  • the thermal reservoir tank 103 comprises a control valve 117 that is configured to regulate the flow through the inlet 113 and the outlet 115.
  • the control valve 117 is located between the outlet 115 and the domestic cold water return line 7.
  • the thermal reservoir tank 103 also comprises a temperature sensor 119 for measuring the temperature of the water held in the thermal reservoir tank 103.
  • the condenser 105 is arranged to transfer heat to a residential heating system 200.
  • the residential heating system may be any type of conventional heating system, such as radiators, an air pump, or similar.
  • the cold water heat exchanger 100 further comprises a control unit 121.
  • the control unit 121 is configured to control, for example, the control valve 117 and the compressor 111 based on a set of input parameters and a set of ambient parameters.
  • the set of input parameters comprises a target output temperature of a residential heating system to which the cold water heat exchanger 100 may be connected.
  • the set of ambient parameters comprises a temperature of the water held in the thermal reservoir tank 103, as given by the temperature sensor 119 arranged therein.
  • the flow of water through the thermal reservoir tank 103 may be controlled by the control unit 121 based on the abovementioned sets of parameters.
  • FIG. 2 is a schematic view of a cold water heat exchanger 100 and a cold water heat exchanger system 1 ’ according to the first and third aspect of the present invention, respectively.
  • the cold water heat exchanger system T of the third aspect of the present invention is identical to that of the first aspect of the present invention, with the exception that the working medium of the heat pump 101 is additionally circulated through a secondary geothermal heat source 300.
  • this secondary geothermal heat source is a borehole heat exchanger 301.
  • Figure 3 illustrates a simplified schematic view of the cold water heat exchanger arrangement and system showing the heat pump 101 having connection to the tank 103 by means of the winded tube 109 that is within the tank 109.
  • the winded tube 109 can draw heat from the water in the tank 103 to boost the operation of the heat pump 101.
  • the tank 103 (having cold water therein) acts as a supplementary heat source for the pump 101.
  • the water transferred to the cold water distribution network by passing the tank 103 as an intermediary
  • Figure 3 also illustrates that there is a water level in the tank 103 so that the majority or preferably all of the winded tube within the tank 103 is covered in the water 130.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Structural Engineering (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Abstract

La présente invention concerne un agencement d'échangeur de chaleur à eau froide (100) comprenant une pompe à chaleur (101) et une cuve de réservoir thermique (103). Ladite pompe à chaleur (101) est configurée pour faire circuler un milieu de travail à travers un tube enroulé (109), disposé à l'intérieur de ladite cuve de réservoir thermique (103). En outre, une entrée (113) de ladite cuve de réservoir thermique est agencée pour être reliée à une alimentation en eau froide domestique (3), et une sortie (115) de ladite cuve de réservoir thermique (103) est agencée pour être reliée à un réseau domestique de distribution d'eau froide (5), la cuve étant agencée pour recevoir de l'eau froide provenant de ladite alimentation en eau froide domestique (3) et transférer ladite eau froide audit réseau d'eau froide domestique (5). De plus, la pompe à chaleur est agencée pour, au moyen dudit tube enroulé (109), tirer de la chaleur à partir de l'eau dans ladite cuve.
PCT/SE2021/051185 2020-11-30 2021-11-29 Agencement d'échangeur de chaleur à eau froide domestique WO2022115029A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE2051386 2020-11-30
SE2051386-7 2020-11-30

Publications (1)

Publication Number Publication Date
WO2022115029A1 true WO2022115029A1 (fr) 2022-06-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2021/051185 WO2022115029A1 (fr) 2020-11-30 2021-11-29 Agencement d'échangeur de chaleur à eau froide domestique

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WO (1) WO2022115029A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20070052551A (ko) * 2005-11-17 2007-05-22 엘지전자 주식회사 지열을 이용한 물 온도 조절장치
DE102007055652A1 (de) * 2007-11-21 2009-05-28 Kaus, Arnim, Dr. Verfahren zur Gewinnung von Erdwärme aus einem Wasserversorgungsnetz und Vorrichtungen dazu
EP2107323A2 (fr) * 2008-04-03 2009-10-07 Rudolf Aschauer Dispositif de production d'eau froide et chaude
ES2339523A1 (es) * 2008-07-21 2010-05-20 Cesar Gonzalez Valiente Electrodomestico productor de agua caliente.
US20100230071A1 (en) * 2009-08-12 2010-09-16 Hal Slater Geothermal Water Heater
CN106225313A (zh) * 2016-08-31 2016-12-14 深圳市丹耐斯机械有限公司 一种空气能冷热水机
CN206556297U (zh) * 2017-03-06 2017-10-13 阮树成 一种风冷式冷水机组

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20070052551A (ko) * 2005-11-17 2007-05-22 엘지전자 주식회사 지열을 이용한 물 온도 조절장치
DE102007055652A1 (de) * 2007-11-21 2009-05-28 Kaus, Arnim, Dr. Verfahren zur Gewinnung von Erdwärme aus einem Wasserversorgungsnetz und Vorrichtungen dazu
EP2107323A2 (fr) * 2008-04-03 2009-10-07 Rudolf Aschauer Dispositif de production d'eau froide et chaude
ES2339523A1 (es) * 2008-07-21 2010-05-20 Cesar Gonzalez Valiente Electrodomestico productor de agua caliente.
US20100230071A1 (en) * 2009-08-12 2010-09-16 Hal Slater Geothermal Water Heater
CN106225313A (zh) * 2016-08-31 2016-12-14 深圳市丹耐斯机械有限公司 一种空气能冷热水机
CN206556297U (zh) * 2017-03-06 2017-10-13 阮树成 一种风冷式冷水机组

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