WO2008007968A1 - An arrangement and a method for changing the temperature of a first and a second fluid located in two separate receptacles - Google Patents

An arrangement and a method for changing the temperature of a first and a second fluid located in two separate receptacles Download PDF

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Publication number
WO2008007968A1
WO2008007968A1 PCT/NO2007/000243 NO2007000243W WO2008007968A1 WO 2008007968 A1 WO2008007968 A1 WO 2008007968A1 NO 2007000243 W NO2007000243 W NO 2007000243W WO 2008007968 A1 WO2008007968 A1 WO 2008007968A1
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WO
WIPO (PCT)
Prior art keywords
fluid
receptacle
energy
exchange element
temperature
Prior art date
Application number
PCT/NO2007/000243
Other languages
French (fr)
Inventor
Lars Hansen
Finn Sigve Andreassen
Original Assignee
Lars Hansen
Finn Sigve Andreassen
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 Lars Hansen, Finn Sigve Andreassen filed Critical Lars Hansen
Priority to DK07793904.9T priority Critical patent/DK2041496T3/en
Priority to EP07793904.9A priority patent/EP2041496B1/en
Priority to ES07793904.9T priority patent/ES2638867T3/en
Priority to PL07793904T priority patent/PL2041496T3/en
Publication of WO2008007968A1 publication Critical patent/WO2008007968A1/en

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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
    • F24D3/00—Hot-water central heating systems
    • F24D3/08—Hot-water central heating systems in combination with systems for domestic hot-water supply
    • 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
    • F24D11/00—Central heating systems using heat accumulated in storage masses
    • F24D11/02—Central heating systems using heat accumulated in storage masses using heat pumps
    • F24D11/0214—Central heating systems using heat accumulated in storage masses using heat pumps water heating system
    • 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

  • An arrangement and a method for changing the temperature of a first and a second fluid located in two separate receptacles An arrangement and a method for changing the temperature of a first and a second fluid located in two separate receptacles.
  • the present invention relates to an arrangement for changing the temperature of a fluid located in a receptacle and being arranged to be able to circulate through the receptacle. More precisely, it concerns effecting a change in temperature of a first fluid and a second fluid arranged to be able to circulate through a first receptacle and a second receptacle, respectively.
  • the temperature of the first fluid and the second fluid is influenced by energy exchange elements placed in each of the receptacles.
  • the temperature of the second fluid may be further influenced by the source temperature of the first fluid owing to the fact that the first fluid upstream of the inlet portion of the first receptacle circulates through a piping system extending through a portion of the second receptacle.
  • the invention also relates to a method for using the arrangement.
  • the term receptacle implies a closed tank provided with at least one fluid inlet portion and at least one fluid outlet portion.
  • Hot consumer water i.e. hot water discharged from a shower or tap, for example, is heated in a so-called water heater.
  • Dwellings installed with water-borne heat must thus be provided with two separate receptacles for heating water.
  • the temperature of the water in a water heater for consumer water is much higher than the temperature of the water in a receptacle for water-borne heat.
  • the temperature in the water heater will typically be 70 0 C, whereas the water temperature in the receptacle for water-borne heat will be ca. 35 0 C.
  • the control system must be provided with at least two temperature sensors, which are to output signals for controlling the heat pump. This involves a complicated adjustment procedure for the user and also relatively high installation- and maintenance costs.
  • the object of the invention is to remedy or reduce at least one of the prior art disadvantages.
  • two fluid receptacles known per se and arranged to be able to provide a change in temperature of a fluid which in a non-limiting example may be for heating consumer water and water for water-borne heat, may be modified in a relatively simple manner allowing for increased efficiency, simple installation and, not the least, simple adjustment for the user.
  • the present invention relates to an arrangement for changing the temperature of a fluid, the arrangement including a first fluid receptacle having at least one first energy exchange element arranged to be able to change the temperature of a first fluid located in the fluid receptacle; a second fluid receptacle having at least one second energy exchange element arranged to be able to change the temperature of a second fluid located in the fluid receptacle, wherein each of said first fluid receptacle and said second fluid receptacle is provided with an inlet portion and an outlet portion for communicating fluid into and out of the receptacles, and wherein the energy exchange
  • P25159PC00DENCL - 12.09.07 elements are influenced by at least one energy source, wherein a piping system is placed in a portion of the second receptacle, the piping system being surrounded by the second fluid and being arranged to be able to conduct the first fluid from a fluid source, via the second fluid receptacle and onto the first fluid receptacle, whereby the temperature of the second fluid may be influenced by the fluid source temperature of the first fluid.
  • At least one of said first and second energy exchange elements is a piping arrangement for circulation of a fluid between the piping arrangement and the energy source.
  • At least one of said first and second energy exchange elements is an electric heating coil known per se.
  • the energy source may, for example, be a heat pump of any type known per se for circulating a liquid or a gas.
  • the liquid may, for example, be water, and the gas may, for example, be freon.
  • both of the energy exchange elements constitute a piping arrangement .
  • the piping arrangements are connected in series, wherein an outlet portion of the piping arrangement in the first receptacle is connected to an inlet portion of the piping arrangement in the second receptacle.
  • the outlet portion of the piping arrangement in the first receptacle is placed higher than the inlet portion of the piping arrangement in the second receptacle.
  • the fluid having circulated through said second receptacle is retuned to the heat pump, after which the fluid again is arranged to be able to circulate to the first receptacle.
  • the first receptacle is a receptacle for heating consumer water
  • the second receptacle is a receptacle for circulating hot liquid through at least one heat emission element constituting a part of a closed fluid circuit.
  • the heat emission element may be water pipes for floor heating, one or more radiators, and/or one or more fan coil units.
  • a by-pass valve is placed in the closed fluid circuit.
  • the purpose of the by-pass valve is to be able to maintain circulation of the second fluid even if it is desirable for the fluid not to circulate through the heat emission element.
  • a temperature sensor is placed in a portion of the closed fluid circuit for circulating fluid from the second receptacle.
  • the temperature sensor is arranged to be able to communicate with a control unit influencing the at least one energy source.
  • a control unit influencing the at least one energy source.
  • all components such as piping, pipe couplings, valves, pumps, energy exchange elements in the receptacles and the energy source, are of a standard type commonly used in the field of invention.
  • the receptacles are provided with an insulation
  • P25159PC00DENCL - 12.09.07 means of a type known per se.
  • the insulation means preferably is also placed in the border portion between the receptacles in a manner reducing any heat exchange between the fluids in the receptacles.
  • the present invention also relates to a method for changing the temperature of a fluid, the method including the steps of providing a first fluid receptacle having at least one first energy exchange element arranged to be able to change the temperature of a first fluid; providing a second fluid receptacle having at least one second energy exchange element arranged to be able to change the temperature of a second fluid, wherein each of said first fluid receptacle and said second fluid receptacle is provided with an inlet portion and an outlet portion for communicating fluid into and out of the receptacles, and wherein the energy exchange elements are influenced by at least one energy source, wherein a piping system is placed in a portion of the second receptacle, the piping system surrounding the second fluid and conducting the first fluid from a fluid source having a fluid source temperature, via the second fluid receptacle and onto the first fluid receptacle, whereby the temperature of the second fluid may be influenced by the fluid source temperature of the first fluid.
  • FIG. 1 showing a principle drawing of a non-limiting example of an arrangement for a hot water installation in a dwelling.
  • reference number 1 indicates an arrangement that includes a first fluid receptacle 3 provided with a first energy exchange element 5, and a second fluid receptacle 7 provided with a second energy exchange element 9.
  • Each energy exchange element 5, 9 is comprised of a first piping coil 5 and a second piping coil 9.
  • the piping coils 5, 9 are connected to a heat pump 15 known per se.
  • the heat pump 15 may be of any known type.
  • freon is used as an energy carrier between the heat pump 15 and the fluid receptacles 3 , 7.
  • the gas is carried from the heat pump 15 and into the piping coil 5 in the first receptacle 3 via a pipe 3 ' .
  • the gas will start condensing in the piping coil 5, thereby transmitting heat to the fluid located in the first receptacle 3.
  • This fluid may, for example, be consumer water.
  • the first receptacle 3 will therefore be referred to as a water heater 3.
  • the piping coil 5 in the water heater 3 is connected in series with the piping coil 9 in the second receptacle 7.
  • the second receptacle 7 is arranged to be able to heat a liquid, for example water.
  • the water circulates through one or more of the heat emission elements 21, 23, 25.
  • the heat emission elements 21, 23, 25 may, for example, be a piping system embedded in a floor, i.e. so-called water-borne floor heating, a radiator or a fan coil unit, all of which are of a type known per se and being well known in the art.
  • the second receptacle will be referred to as a floor heat exchanger 7.
  • Freon in the form of gas and condensate, is conducted from the piping coil 5 in the water heater 3 and onto the piping coil 9 in the floor heat exchanger 7.
  • the freon gas will condense completely in the piping coil 9, thus heating the liquid in the floor heat exchanger 7.
  • Condensed freon is conducted from the piping coil 9 and back to the heat pump 15 via a pipe 7 ' .
  • the temperature of the water in the floor heat exchanger 7 may rise relatively quickly to a predetermined maximum level.
  • the heat pump 15 When the predetermined temperature of the liquid in the floor heat exchanger 7 has been reached, the heat pump 15 will stop in a manner known per se, or it will have a reduced output if using inverter-controlled equipment.
  • a consumer water piping coil 17, hereinafter referred to as a piping coil 17, is placed in the lower portion of the floor heat exchanger 7.
  • the piping coil 17, in an inlet portion 19 thereof, is connected to a water source (not shown), for example a water distribution system.
  • An outlet portion of the piping coil 17 is in fluid communication with an inlet portion 11' placed at the top of the water heater 3.
  • the inlet portion 11' may be comprised of a mixing valve 13' known per se.
  • Water having a predetermined temperature may be able to flow from the mixing valve 13' and onto discharge points 31.
  • the discharge points 31 may, for example, be a shower or a washbasin.
  • the heat pump 15 Upon reducing the temperature in the floor heat exchanger 7 to below its setpoint, the heat pump 15 will be operational even when heat is not required to the heat emission elements 21, 23, 25. Furthermore, the water being conducted into the water heater 3 will be preheated. This renders possible to reduce the size of the water heater 3 because it is supplied with preheated water whilst simultaneously transmitting heat from the freon gas when condensing in the piping coil 5.
  • the heat pump 15 may be influenced by the need for heat to the heat emission elements 21, 23, 25, and instead of the need for hot consumer water.
  • the energy source 15, which in the embodiment example is a heat pump, and which is arranged to be able to heat the fluid in both receptacles 3, 7, may be controlled by means of only one setpoint 29, which may be comprised of a thermostat/temperature sensor.
  • the thermostat/temperature sensor 29 is arranged to be able to communicate with a control unit known per se, but not shown, and which is arranged to be able to influence the heat pump 15. This provides great advantages, both in terms of installation costs, user-friendliness and maintenance costs.
  • a heat pump is replaced by a solar panel for heating a liquid.
  • the heated liquid is circulated, in the same manner as the freon gas referred to in the above example, through the piping coils 5, 9.
  • a solar panel may be used in series together with a
  • P25159PC00DENCL - 12.09.07 condenser circuit for a cooling/freezing plant. When used in this manner, the surplus energy may be used for heating.
  • a combination of liquid and gas from a solar panel and a heat pump, respectively, is conducted through piping coils in one or both of the receptacles 3 , 7.
  • an electric heating coil known per se is placed in addition to the piping coil(s), at least in one of the receptacles.

Abstract

The present invention relates to an arrangement (1) for changing the temperature of a fluid, the arrangement including a first fluid receptacle (3) having at least one first energy exchange element (5) arranged to be able to change the temperature of a first fluid located in the fluid receptacle (3); a second fluid receptacle (7) having at least one second energy exchange element (9) arranged to be able to change the temperature of a second fluid located in the fluid receptacle (7), wherein each of said first fluid receptacle (3) and said second fluid receptacle (7) is provided with an inlet portion (11, 11') and an outlet portion (13, 13') for communicating fluid into and out of the receptacles (3, 7), and wherein the energy exchange elements (5, 9) are influenced by at least one energy source (15), wherein a piping system (17) is placed in a portion of the second receptacle (7), the piping system (17) being surrounded by the second fluid and being arranged to be able to conduct the first fluid from a fluid source (19), via the second fluid receptacle (7) and onto the first fluid receptacle (3), whereby the temperature of the second fluid may be influenced by the fluid source temperature of the first fluid. The invention also relates to a method for carrying out the invention.

Description

An arrangement and a method for changing the temperature of a first and a second fluid located in two separate receptacles.
The present invention relates to an arrangement for changing the temperature of a fluid located in a receptacle and being arranged to be able to circulate through the receptacle. More precisely, it concerns effecting a change in temperature of a first fluid and a second fluid arranged to be able to circulate through a first receptacle and a second receptacle, respectively. The temperature of the first fluid and the second fluid is influenced by energy exchange elements placed in each of the receptacles. The temperature of the second fluid may be further influenced by the source temperature of the first fluid owing to the fact that the first fluid upstream of the inlet portion of the first receptacle circulates through a piping system extending through a portion of the second receptacle. The invention also relates to a method for using the arrangement.
In this document, the term receptacle implies a closed tank provided with at least one fluid inlet portion and at least one fluid outlet portion.
An arrangement for heating consumer water and liquid circulating through at least one heat emission element for heating a room, for example, will be discussed in this
P25159PC00DENCL - 12.09.07 document. However, a person skilled in the art will be able to understand that the invention equally well may be used in the heating and cooling industry.
In modern dwellings it has become increasingly more common to heat day rooms by means of so-called water-borne heat. This implies that for example hot water is circulated from a receptacle within which the water is heated, via heat emission elements such as pipe(s), radiator(s) and/or fan coil unit(s), prior to the water returning again to the receptacle for reheating.
Hot consumer water, i.e. hot water discharged from a shower or tap, for example, is heated in a so-called water heater.
Dwellings installed with water-borne heat must thus be provided with two separate receptacles for heating water.
Due to continually rising energy prices, it is becoming increasingly more common to use a heat pump to be able to reduce the amount of energy that must be purchased or at least be introduced into the arrangement to be able to heat the water in said two receptacles.
Due to several reasons, however, it has proven complicated to install the heat pump control and also difficult to make it function satisfactorily.
Normally, the temperature of the water in a water heater for consumer water is much higher than the temperature of the water in a receptacle for water-borne heat. The temperature in the water heater will typically be 70 0C, whereas the water temperature in the receptacle for water-borne heat will be ca. 35 0C.
P25159PC00DENCL - 12.09.07 The need for water-borne heat varies as it depends strongly on the outside temperature, whereas the need for hot consumer water is more or less constant throughout the year.
The control system must be provided with at least two temperature sensors, which are to output signals for controlling the heat pump. This involves a complicated adjustment procedure for the user and also relatively high installation- and maintenance costs.
The object of the invention is to remedy or reduce at least one of the prior art disadvantages.
The object is achieved by means of the features disclosed in the description below and in the subsequent claims.
It has been found, surprisingly, that two fluid receptacles known per se and arranged to be able to provide a change in temperature of a fluid, which in a non-limiting example may be for heating consumer water and water for water-borne heat, may be modified in a relatively simple manner allowing for increased efficiency, simple installation and, not the least, simple adjustment for the user.
Accordingly, the present invention relates to an arrangement for changing the temperature of a fluid, the arrangement including a first fluid receptacle having at least one first energy exchange element arranged to be able to change the temperature of a first fluid located in the fluid receptacle; a second fluid receptacle having at least one second energy exchange element arranged to be able to change the temperature of a second fluid located in the fluid receptacle, wherein each of said first fluid receptacle and said second fluid receptacle is provided with an inlet portion and an outlet portion for communicating fluid into and out of the receptacles, and wherein the energy exchange
P25159PC00DENCL - 12.09.07 elements are influenced by at least one energy source, wherein a piping system is placed in a portion of the second receptacle, the piping system being surrounded by the second fluid and being arranged to be able to conduct the first fluid from a fluid source, via the second fluid receptacle and onto the first fluid receptacle, whereby the temperature of the second fluid may be influenced by the fluid source temperature of the first fluid.
In one embodiment, at least one of said first and second energy exchange elements is a piping arrangement for circulation of a fluid between the piping arrangement and the energy source.
In one embodiment, at least one of said first and second energy exchange elements is an electric heating coil known per se.
The energy source may, for example, be a heat pump of any type known per se for circulating a liquid or a gas. The liquid may, for example, be water, and the gas may, for example, be freon.
In a preferred embodiment, and in order to be able to use a heat pump, both of the energy exchange elements constitute a piping arrangement .
Preferably, the piping arrangements are connected in series, wherein an outlet portion of the piping arrangement in the first receptacle is connected to an inlet portion of the piping arrangement in the second receptacle.
In one embodiment, the outlet portion of the piping arrangement in the first receptacle is placed higher than the inlet portion of the piping arrangement in the second receptacle.
P25159PC00DENCL - 12.09.07 In a preferred embodiment, the fluid having circulated through said second receptacle is retuned to the heat pump, after which the fluid again is arranged to be able to circulate to the first receptacle.
In one aspect of the invention, the first receptacle is a receptacle for heating consumer water, and the second receptacle is a receptacle for circulating hot liquid through at least one heat emission element constituting a part of a closed fluid circuit. In a non-limiting example, the heat emission element may be water pipes for floor heating, one or more radiators, and/or one or more fan coil units.
In a preferred embodiment, a by-pass valve is placed in the closed fluid circuit. The purpose of the by-pass valve is to be able to maintain circulation of the second fluid even if it is desirable for the fluid not to circulate through the heat emission element.
In a preferred embodiment, a temperature sensor is placed in a portion of the closed fluid circuit for circulating fluid from the second receptacle. Preferably, the temperature sensor is arranged to be able to communicate with a control unit influencing the at least one energy source. Thus, it is possible to control the temperature of the fluid in both receptacles by means of only one setpoint, for example a thermostat known per se.
In a preferred embodiment, all components, such as piping, pipe couplings, valves, pumps, energy exchange elements in the receptacles and the energy source, are of a standard type commonly used in the field of invention.
In a preferred embodiment, and in order to be able to reduce any exchange of heat between the receptacles and the surroundings, the receptacles are provided with an insulation
P25159PC00DENCL - 12.09.07 means of a type known per se. Upon placing the first receptacle above the second receptacle, the insulation means preferably is also placed in the border portion between the receptacles in a manner reducing any heat exchange between the fluids in the receptacles.
The present invention also relates to a method for changing the temperature of a fluid, the method including the steps of providing a first fluid receptacle having at least one first energy exchange element arranged to be able to change the temperature of a first fluid; providing a second fluid receptacle having at least one second energy exchange element arranged to be able to change the temperature of a second fluid, wherein each of said first fluid receptacle and said second fluid receptacle is provided with an inlet portion and an outlet portion for communicating fluid into and out of the receptacles, and wherein the energy exchange elements are influenced by at least one energy source, wherein a piping system is placed in a portion of the second receptacle, the piping system surrounding the second fluid and conducting the first fluid from a fluid source having a fluid source temperature, via the second fluid receptacle and onto the first fluid receptacle, whereby the temperature of the second fluid may be influenced by the fluid source temperature of the first fluid.
In the following, a non-limiting example of a preferred embodiment is described and depicted in the accompanying drawing, Fig. 1 showing a principle drawing of a non-limiting example of an arrangement for a hot water installation in a dwelling.
A person skilled in the art will understand that the figure is only a principle drawing not necessarily showing individual elements depicted at the mutually correct scale,
P25159PC00DENCL - 12.09.07 the drawing of which is only prepared to be able to illustrate the main features of one embodiment of the present invention.
Yet further, a person skilled in the art will understand the meaning of the symbols used for individual elements, even if they are not specifically referred to in the following. Moreover, a person skilled in the art will understand that further components than those shown in the principle drawing may become necessary.
In the figure, reference number 1 indicates an arrangement that includes a first fluid receptacle 3 provided with a first energy exchange element 5, and a second fluid receptacle 7 provided with a second energy exchange element 9. Each energy exchange element 5, 9 is comprised of a first piping coil 5 and a second piping coil 9. The piping coils 5, 9 are connected to a heat pump 15 known per se. The heat pump 15 may be of any known type.
When a so-called air/water heat pump is used, freon is used as an energy carrier between the heat pump 15 and the fluid receptacles 3 , 7.
A compressor in the heat pump 15, which is known per se, compresses the gas to a high pressure and a high temperature. The gas is carried from the heat pump 15 and into the piping coil 5 in the first receptacle 3 via a pipe 3 ' . The gas will start condensing in the piping coil 5, thereby transmitting heat to the fluid located in the first receptacle 3. This fluid may, for example, be consumer water. In the following, the first receptacle 3 will therefore be referred to as a water heater 3.
P25159PC00DENCL - 12.09.07 Upon gradually increasing the temperature of the consumer water in the water heater 3, the condensation of the freon gas in the piping coil 5 will diminish.
Via a pipe 37, the piping coil 5 in the water heater 3 is connected in series with the piping coil 9 in the second receptacle 7.
The second receptacle 7 is arranged to be able to heat a liquid, for example water. The water circulates through one or more of the heat emission elements 21, 23, 25. The heat emission elements 21, 23, 25 may, for example, be a piping system embedded in a floor, i.e. so-called water-borne floor heating, a radiator or a fan coil unit, all of which are of a type known per se and being well known in the art. In the following, and for the sake of simplicity, the second receptacle will be referred to as a floor heat exchanger 7.
Freon, in the form of gas and condensate, is conducted from the piping coil 5 in the water heater 3 and onto the piping coil 9 in the floor heat exchanger 7. The freon gas will condense completely in the piping coil 9, thus heating the liquid in the floor heat exchanger 7. Condensed freon is conducted from the piping coil 9 and back to the heat pump 15 via a pipe 7 ' .
When no need exists for heating by means of the heat emission elements 21, 23, 25, which oftentimes is the case during the summer half of the year, the temperature of the water in the floor heat exchanger 7 may rise relatively quickly to a predetermined maximum level.
When the predetermined temperature of the liquid in the floor heat exchanger 7 has been reached, the heat pump 15 will stop in a manner known per se, or it will have a reduced output if using inverter-controlled equipment.
P25159PC00DENCL - 12.09.07 Independent of the heating requirement, however, there will always be a need for hot consumer water.
A consumer water piping coil 17, hereinafter referred to as a piping coil 17, is placed in the lower portion of the floor heat exchanger 7. The piping coil 17, in an inlet portion 19 thereof, is connected to a water source (not shown), for example a water distribution system. An outlet portion of the piping coil 17 is in fluid communication with an inlet portion 11' placed at the top of the water heater 3. The inlet portion 11' may be comprised of a mixing valve 13' known per se.
Water having a predetermined temperature may be able to flow from the mixing valve 13' and onto discharge points 31. The discharge points 31 may, for example, be a shower or a washbasin.
When relatively cold distribution system water, typically at a temperature of 7 0C, is conducted through the piping coil 17, this will cause heat exchanging to take place between the distribution system water and the liquid in the floor heat exchanger 7. Thus, the liquid in the floor heat exchanger 7 will be cooled, simultaneously increasing the temperature of the water in the piping coil 17. This brings about two very important consequences .
Upon reducing the temperature in the floor heat exchanger 7 to below its setpoint, the heat pump 15 will be operational even when heat is not required to the heat emission elements 21, 23, 25. Furthermore, the water being conducted into the water heater 3 will be preheated. This renders possible to reduce the size of the water heater 3 because it is supplied with preheated water whilst simultaneously transmitting heat from the freon gas when condensing in the piping coil 5.
P25159PC00DENCL - 12.09.07 In order to be able to optimise the production of hot consumer water throughout the summer half of the year, it has proven advantageous to let the liquid in the floor heat exchanger 7 circulate out through an outlet portion 13 , via a pipeline 12 and in through an inlet portion 11 in the very same floor heat exchanger 7. This is achieved by means of a pumping arrangement 33 placed in the circulation loop. A bypass valve 27 is placed in the circulation loop in a manner allowing the liquid from the floor heat exchanger 7 to flow past the heat emission elements 21, 23, 25 when the bypass valve 27 is open, and when valves 28 in the pipeline 12 are closed.
During colder periods of the year, the heat pump 15 may be influenced by the need for heat to the heat emission elements 21, 23, 25, and instead of the need for hot consumer water.
Surprisingly, and based on the above, a person skilled in the art will understand that the energy source 15, which in the embodiment example is a heat pump, and which is arranged to be able to heat the fluid in both receptacles 3, 7, may be controlled by means of only one setpoint 29, which may be comprised of a thermostat/temperature sensor. The thermostat/temperature sensor 29 is arranged to be able to communicate with a control unit known per se, but not shown, and which is arranged to be able to influence the heat pump 15. This provides great advantages, both in terms of installation costs, user-friendliness and maintenance costs.
In an alternative embodiment (not shown) , a heat pump is replaced by a solar panel for heating a liquid. The heated liquid is circulated, in the same manner as the freon gas referred to in the above example, through the piping coils 5, 9. A solar panel may be used in series together with a
P25159PC00DENCL - 12.09.07 condenser circuit for a cooling/freezing plant. When used in this manner, the surplus energy may be used for heating.
In another alternative embodiment (not shown) , a combination of liquid and gas from a solar panel and a heat pump, respectively, is conducted through piping coils in one or both of the receptacles 3 , 7.
In yet another alternative embodiment (not shown) , an electric heating coil known per se is placed in addition to the piping coil(s), at least in one of the receptacles.
P25159PC0ODENCL - 12.09.07

Claims

C l a i m s
1. An arrangement for controlling change in temperature of a fluid, the arrangement comprising:
- a first receptacle (3) provided with a first energy exchange element (5) arranged to be able to change the temperature of a first fluid located in the receptacle (3), the receptacle (3) being further provided with a fluid inlet portion (H') and a fluid outlet portion (13'); - a second receptacle (7) provided with a second energy exchange element (9) and a third energy exchange element (17), each of which are arranged to be able to effect a change in temperature of a second fluid located in the receptacle (7), the receptacle (7) being further provided with a fluid inlet portion (11) and a fluid outlet portion (13), c ha r a c t e r i s e d i n that the arrangement further comprises an energy source (15) that is in fluid communication with the first energy exchange element (5) and the second energy exchange element (9) in a manner making energy from the energy source (15) available, via an energy carrier, firstly to the first energy exchange element (5) for exchanging energy with the first fluid, and then making it available to the second energy exchange element (9) for exchanging energy with the second fluid, wherein the first fluid, which is conducted into the first receptacle (3) from a fluid supply source, (19) is conducted firstly via the third energy exchange element (17) in the second receptacle (7) for exchanging energy with the second fluid, the energy source (15) being arranged to be controlled by a setpoint (29) arranged to be able to sense the fluid temperature in the second receptacle (7) .
P25159PC00DENCL - 12.09.07
2. The arrangement according to claim 1, c ha r a c t e r i s e d i n that the setpoint (29) is placed in a fluid circuit (12) that is in fluid communication with the fluid outlet portion (13) and the fluid inlet portion (11) of the second receptacle (7).
3. The arrangement according to claim 1 or 2 , c ha r a c t e r i s e d i n that the setpoint (29) is placed at the fluid outlet portion (13) of the second receptacle (7) .
4. The arrangement according to any one of the preceding claims, c ha r a c t e r i s e d i n that the energy source (15) is a heat pump, and wherein the fluid is a liquid or a gas.
5. The arrangement according to any one of claims 1-3, c ha r a c t e r i s e d i n that the energy source
(15) is a solar panel, and wherein the fluid is a liquid or a gas .
6. The arrangement according to claim 1 in combination with claim 3 or 4, c h a r a c t e r i s e d i n that the first (5) and the second (9) energy exchange element (5, 9) comprises a piping arrangement connected in series, and wherein an outlet portion (5') of the piping arrangement (5) in the first receptacle (3) is connected to an inlet portion (9') of the piping arrangement (9) in the second receptacle (7) .
7. The arrangement according to claim 6, c ha r a c t e r i s e d i n that the outlet portion (5') of the piping arrangement (5) in the first receptacle (3) is placed higher than the inlet portion (9') of the piping arrangement (9) in the second receptacle (7 ) .
P25159PC00DENCL - 120907
8. The arrangement according to claim 1 and 2 , c h a r a c t e r i s e d i n that the first receptacle (3) is a receptacle for heating consumer water, and wherein the second receptacle (7) is a receptacle for circulating fluid through at least one heat exchange element (21, 23, 25) constituting a part of the closed fluid circuit (12) .
9. The arrangement according to claim 8, c h a r a c t e r i s e d i n that the closed fluid circuit (12) is provided with a bypass valve (27) arranged to be able to circulate the fluid past the at least one heat exchange element (21, 23, 25).
10. The arrangement according to claim 9, c h a r a c t e r i s e d i n that the setpoint (29) is placed upstream of the bypass valve (27) .
11. A method for controlling change in temperature of a fluid located in two separate receptacles (3, 7), the change in temperature being effected by a mutual energy source (15), c ha r a c t e r i s e d i n that the method includes the steps of:
- providing a first receptacle (3) with a first energy exchange element (5) arranged to be able to change the temperature of a first fluid located in the first receptacle (3) ; - providing a second receptacle (7) with a second energy exchange element (9) and a third energy exchange element (17), each of said energy exchange elements (9, 17) being individually arranged to be able to change the temperature of a second fluid located in the second receptacle (7);
- carrying an energy carrier from an energy source (15) to the first energy exchange element (5) and the second
P25159PC00DENCL - 12.09.07 energy exchange element (9) in a manner making the energy carrier from the energy source (15) available firstly to the first energy exchange element (5) for exchanging energy with the first fluid, and then making it available to the second energy exchange element (9) for exchanging energy with the second fluid;
- conducting the first fluid from a fluid source (19) via the third energy exchange element (17) in the second receptacle (7) for exchanging energy with the second fluid prior to being conducted into the first receptacle (3);
- controlling the energy source (15) by means of a setpoint (29) arranged to be able to sense the fluid temperature in the second receptacle (7).
The method according to claim 11, c ha r a c t e r i s e d i n placing the setpoint (29) in a fluid circuit (12) that is in fluid communication with the second fluid through a fluid inlet portion (11) and a fluid outlet portion (13) in the second receptacle ( 7 ) .
C00DENCL - 12.09.07
PCT/NO2007/000243 2006-07-14 2007-06-29 An arrangement and a method for changing the temperature of a first and a second fluid located in two separate receptacles WO2008007968A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DK07793904.9T DK2041496T3 (en) 2006-07-14 2007-06-29 Device and method for temperature change in a first and a second fluid placed in two separate containers
EP07793904.9A EP2041496B1 (en) 2006-07-14 2007-06-29 An arrangement and a method for changing the temperature of a first and a second fluid located in two separate receptacles
ES07793904.9T ES2638867T3 (en) 2006-07-14 2007-06-29 Arrangement and procedure for changing the temperature of a first and second fluid located in two separate receptacles
PL07793904T PL2041496T3 (en) 2006-07-14 2007-06-29 An arrangement and a method for changing the temperature of a first and a second fluid located in two separate receptacles

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20063270 2006-07-14
NO20063270A NO326440B1 (en) 2006-07-14 2006-07-14 Arrangement and method for controlling fluid temperature change

Publications (1)

Publication Number Publication Date
WO2008007968A1 true WO2008007968A1 (en) 2008-01-17

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PCT/NO2007/000243 WO2008007968A1 (en) 2006-07-14 2007-06-29 An arrangement and a method for changing the temperature of a first and a second fluid located in two separate receptacles

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EP (1) EP2041496B1 (en)
DK (1) DK2041496T3 (en)
ES (1) ES2638867T3 (en)
NO (1) NO326440B1 (en)
PL (1) PL2041496T3 (en)
WO (1) WO2008007968A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009010702A1 (en) * 2007-07-17 2009-01-22 Powrmatic Limited A heating module and system controller that increases the efficiency of heat pumps for domestic hot water and heating
FR2995068A1 (en) * 2012-09-05 2014-03-07 Didier Thieme System for heating circuits of e.g. water of different temperatures for heating sanitary water to heat dwelling building, has refrigerating exchanger condensing refrigerant, and exchanger pre-heating fluid going into another exchanger
EP2956722A1 (en) * 2013-02-18 2015-12-23 Ideal Boilers Limited Water heating apparatus
EP3173703A1 (en) * 2015-11-27 2017-05-31 Sharp Kabushiki Kaisha Pre-heating thermal store

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO337174B1 (en) 2013-12-19 2016-02-01 Lars Hansen Heat exchanger tubes and method using the same
EP4293307A1 (en) 2022-06-16 2023-12-20 Cordivari S.r.l. Compact storage and heat exchange system for thermal systems, relative plant and method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4139152A (en) * 1977-04-05 1979-02-13 Kronberger Jr Joseph A Heating system
US4264239A (en) 1975-10-14 1981-04-28 King-Seeley Thermos Co. Ice transport and dispensing system
GB2286654A (en) * 1994-02-21 1995-08-23 Robert Cole Apparatus for providing hot water and/or central heating
GB2414289A (en) * 2004-05-19 2005-11-23 Asker Barum Kuldeteknikk A S A heat pump installation

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2485169B1 (en) * 1980-06-20 1986-01-03 Electricite De France IMPROVEMENTS ON HOT WATER SUPPLY INSTALLATIONS INCLUDING A THERMODYNAMIC CIRCUIT
DE29601783U1 (en) * 1996-02-05 1996-06-13 Froeling Heizkessel Und Behael Buffer storage for a heating circuit
DE29800262U1 (en) * 1998-01-09 1998-09-10 Loeser Solarsysteme Gmbh Storage system for water heating

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4264239A (en) 1975-10-14 1981-04-28 King-Seeley Thermos Co. Ice transport and dispensing system
US4139152A (en) * 1977-04-05 1979-02-13 Kronberger Jr Joseph A Heating system
GB2286654A (en) * 1994-02-21 1995-08-23 Robert Cole Apparatus for providing hot water and/or central heating
GB2414289A (en) * 2004-05-19 2005-11-23 Asker Barum Kuldeteknikk A S A heat pump installation

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2041496A4 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009010702A1 (en) * 2007-07-17 2009-01-22 Powrmatic Limited A heating module and system controller that increases the efficiency of heat pumps for domestic hot water and heating
FR2995068A1 (en) * 2012-09-05 2014-03-07 Didier Thieme System for heating circuits of e.g. water of different temperatures for heating sanitary water to heat dwelling building, has refrigerating exchanger condensing refrigerant, and exchanger pre-heating fluid going into another exchanger
EP2956722A1 (en) * 2013-02-18 2015-12-23 Ideal Boilers Limited Water heating apparatus
EP2956722B1 (en) * 2013-02-18 2023-09-20 Ideal Boilers Limited Water heating apparatus
EP3173703A1 (en) * 2015-11-27 2017-05-31 Sharp Kabushiki Kaisha Pre-heating thermal store

Also Published As

Publication number Publication date
EP2041496B1 (en) 2017-05-31
PL2041496T3 (en) 2017-10-31
NO20063270L (en) 2008-01-15
ES2638867T3 (en) 2017-10-24
EP2041496A4 (en) 2015-09-16
NO326440B1 (en) 2008-12-08
EP2041496A1 (en) 2009-04-01
DK2041496T3 (en) 2017-09-18

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