# US 10,119,724 B2 · Accumulator tank

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- Number: US 10,119,724 B2
- Document ID: US10119724B2
- Status: Granted
- Kind: B2
- Application number: 15/289,588
- Filed: 2016-10-10
- Published: 2017-01-26
- Granted: 2018-11-06
- Earliest claimed: 2009-12-23
- Assignees: Fueltech Sweden AB
- Applicants: Fueltech Sweden AB
- Inventors: Mikael Jönsson
- Web page: https://patentgrep.com/patent/US10119724B2

## CPC

- F24H 1/202: {with resistances}
- F24D 11/002: {water heating system}
- F24H 9/0005: {for water heaters}
- F24H 9/133: {Storage heaters}
- F24H 9/14: Arrangements for connecting different sections, e.g. in water heaters (arrangements for connecting heaters to circulation pipes F24H9/12)
- F28D 20/0039: {with stratification of the heat storage material}
- F24D 2220/08: Storage tanks
- F28D 2020/006: {Heat storage systems not otherwise provided for}
- F28D 2020/0078: {Heat exchanger arrangements}
- F28D 2020/0086: {Partitions}
- Y02E 60/14: Thermal energy storage
- F24H: FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL (steam generation F22)
- F24D: DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR (using steam or condensate extracted or exhausted from steam engine plants for heating purposes F01K17/02)
- F28D: HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT (fluid heaters having heat generating means and heat transferring means F24H; furnaces F27; details of heat-exchange apparatus of general)
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

An accumulator tank for handling a heat transfer medium, may have a tank top section and a bottom section. The accumulator tank may be connected to at least one heat-emitting system and at least one heat-absorbing system. The accumulator tank may have a plurality of partition walls located inside the tank and arranged between the bottom section and the top section for the purpose of dividing the tank into a plurality of spaces. The systems may be connected to at least one respective space so that a temperature gradient is created between the bottom section and the top section. Also disclosed is a system for distributing and handling heat and/or cold, the accumulator tank.

## Claims

### Claim 1

An accumulator tank for handling a heat transfer medium, comprising:
a tank with a top section and a bottom section;
a plurality of partition walls located inside the tank and arranged between the bottom section and the top section to divide the tank into a plurality of spaces;
wherein the accumulator tank is connected to a heat-emitting system and a heat-absorbing system, each of the heat-emitting system and the heat-absorbing system being connected to at least one respective space so that a temperature gradient is created between the bottom section and the top section;
wherein the partition walls are welded onto the accumulator tank along substantially its entire inner periphery, such that the strength of the accumulator tank is increased and movement of the medium between the spaces of the accumulator tank along its inner walls is prevented;
wherein the tank has the shape of an upright cylinder with a D-shaped cross-section when viewed from above and is devoid of any external structural support;
wherein a flat wall of the cross-section has an exposed outer surface;
wherein a plurality of pipes in a first bundle penetrate through an upper end surface of the tank, extend inside the tank, and each pipe respectively opens into a different one of the spaces;
wherein a plurality of pipes in a second bundle penetrate through the upper end surface of the tank, extend inside the tank and each pipe respectively opens into a different one of the spaces;
wherein the plurality of pipes in the first bundle are connected to the heat-emitting system; and
wherein the plurality of pipes in the second bundle are connected to the heat-absorbing system.

### Claim 2 (depends on 1)

The accumulator tank according to claim 1, wherein the partition walls are provided with holes for allowing communication of medium between the spaces.

### Claim 3 (depends on 1)

The accumulator tank according to claim 1, wherein the partition walls are fabricated from aluminium.

### Claim 4 (depends on 1)

The accumulator tank according to claim 1, wherein an additional heat-emitting system is located inside the accumulator tank.

### Claim 5 (depends on 1)

The accumulator tank according to claim 1, wherein the heat-emitting system is located outside the accumulator tank.

### Claim 6 (depends on 1)

The accumulator tank according to claim 1, wherein the heat-emitting system comprises a heat exchanger.

### Claim 7 (depends on 1)

The accumulator tank according to claim 1, wherein the heat-emitting system includes at least one of a solar heating plant, a water/water heat pump, an air/water heat pump, a rock source heat pump, a ground source heat pump, a groundwater heat pump, an electric heating system, a pellet heating system, a wood heating system, and an oil heating system.

### Claim 8 (depends on 1)

The accumulator tank according to claim 1, wherein the heat-absorbing system comprises a heat exchanger.

### Claim 9 (depends on 1)

The accumulator tank according to claim 1, wherein the heat-absorbing system includes at least one of a radiator, an electric heater, an underfloor heating coil, a ceiling heating coil, a wall heating coil, and a tap water heat exchanger.

### Claim 10 (depends on 1)

The accumulator tank according to claim 1, wherein at least one of the spaces is provided with an inlet for supplying the medium from the heat-absorbing system and/or an outlet for discharging the medium to the heat-absorbing system.

### Claim 11 (depends on 1)

The accumulator tank according to claim 1, wherein at least one of the spaces is provided with an inlet for supplying the medium from the heat-emitting system and/or an outlet for discharging the medium to the heat-emitting system.

### Claim 12 (depends on 1)

The accumulator tank according to claim 1, wherein at least one of the spaces is provided with at least one pipe for communication of medium with the heat-absorbing system.

### Claim 13 (depends on 1)

The accumulator tank according to claim 1, wherein at least one of the spaces is provided with at least one pipe for communication of medium with the heat-emitting system.

### Claim 14 (depends on 1)

The accumulator tank according to claim 1, wherein the medium comprises water.

### Claim 15 (depends on 1)

A system for distributing and handling heat and/or cold, comprising an accumulator tank according to claim 1.

### Claim 16

An accumulator tank for handling a heat transfer medium, comprising:
a tank with a top section and a bottom section;
a plurality of partition walls located inside the tank and arranged between the bottom section and the top section to divide the tank into a plurality of spaces;
wherein the tank is connected to a heat-emitting system and a heat-absorbing system, each of the heat-emitting system and the heat-absorbing system being connected to one of the top and the bottom sections so that a temperature gradient is created between the bottom section and the top section;
wherein the partition walls are welded to the accumulator tank such that the strength of the accumulator tank is increased and movement of the medium between the spaces of the accumulator tank along its inner walls is inhibited;
wherein the tank has the shape of an upright cylinder with a D-shaped cross-section when viewed from above during use;
wherein a flat wall of the cross-section has an exposed outer surface;
wherein a bundle of pipes penetrate through an upper end surface of the tank, extend inside the tank, and each pipe respectively opens into a different one of the spaces; and
wherein the bundle of pipes includes (1) a plurality of inlet pipes, or (2) a plurality of outlet pipes.