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Title:
CHAMBER HEAT EXCHANGER WITH THE ICE REMOVAL MECHANISM
Document Type and Number:
WIPO Patent Application WO/2020/215130
Kind Code:
A1
Abstract:
The invention refers to a chamber heat exchanger consisting of a shell, a bottom and a lid (pos. 1) cooled by a compression cycle. The chamber wall is provided with copper pipes (pos. 12 and 13) on its outer side or as double-wall construction conducting an antifreeze (pos. 3) into which freon from the compressor is inputted (pos. 11). Heat energy is extracted for further use, thereby forming ice on the inner side of the chamber wall. The construction for ice removal comprises a carrier construction on the external side (pos. 5) of the chamber, a ring (pos. 6) and a carrier construction on the internal side (pos. 7) with knives (pos. 8). The chamber receives an input of water from a city pipeline or nearby water flows (stream, river or lake) or sewage (pos. 9), while the removed ice is disposed into the sewage (pos. 10). The heat produced by icing of 1 cubic meter of the water equals to 95 - 110 KWh. A program measuring the electromotor load and water temperatures in the exchanger provides automatic process management.

Inventors:
HADŽIIBRIŠEVIĆ NUSRET (BA)
Application Number:
PCT/BA2020/000002
Publication Date:
October 29, 2020
Filing Date:
April 01, 2020
Export Citation:
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Assignee:
HADZIIBRISEVIC NUSRET (BA)
International Classes:
F28D1/06; F25B30/06; F25B39/02; F28F17/00; F28F19/00; F25C1/145; F28G3/10
Domestic Patent References:
WO2001007846A12001-02-01
WO2019140495A12019-07-25
Foreign References:
US20150083366A12015-03-26
US20130160477A12013-06-27
FR2430580A11980-02-01
US6681593B12004-01-27
Download PDF:
Claims:
PATENT REQUIREMENTS

:·.· : :

1. Chamber heat exchanger with the ice removal mechanism consists of the shell, chamber, bottom, lid and ice removal mechanism and it is specified as a system in which freon on temperature between -10eC to -15"C is spread on the chamber’s exchanging sur&ce, then the ice which is formed is removed by knives of the ice removal mechanism. Afterwards, foe ice is disposed into the sewage by intake of foe fresh water. The complete process is automatized,

2. Heat exchanger’s chamber ¾ a construction of two tubes of smaller and bigger diameter, welded on bottom and upper side into which freon is inputted from compressor through the copper pipes and the chamber is filled with fitson with foe temperature -20%',

3. Ice removal mechanism consists of electromotor with the reducer and foe shaft with foe construction carrying knives for ice removal from foe chamber of foe exchanger on internal and external side of the chamber.

A. ice removal mechanism has multiple steel knives resistant to fraying and pieced on few knives carriers with foe distance between them 4x90° == 360° on internal and external side of foe chamber.

5. Ice removal mechanism is specified by the knives of 150mm length which are not touching the chamber surface.

6. ice removal mechanism knives carriers on foe external side are connected at the bottom by a ring, that strengthens tire construction and provides no contact of foe knives with foe chambers.

7. Ice removal mechanism knives are placed vertically on foe chamber and they make one round in 3 seconds,

8. Chamber heat exchanger with the ice removal mechanism has edged surface of foe water at foe depth of 80mm, size ¼ (90°) of the circle, for ice collection, with a pipe for ice disposal to the sewage placed inside;

Description:
CHAMBER HEAT EXCHANGER WITH THE ICE REMOVAL MECHANISM

1. Technical field to which the invention relates (with the IPC class stated)

According to the international patent classification, this invention is classified into a group F28-Heat exchange in general,

2. Technical problem for whose solution patent protection is required

Continued heat transfer by transition of the liquid water into the solid form (latent icing heat) has not been solved yet.

in this mode, defined by invention of the chamber beat exchanger with the ice removal mechanism, it is possible to transfer significantly higher heat quantities than what is achieved by well-known method in the heat pump faculties which are transfering the heat from the water.

When the well water is used for heat transfer by heat pumps, 1 cubic meter of the water transits into the ice instead of use of 25 cubic meters of the water, so the need for the well discharge capacity is decreased. The invention also gives a solution for use of the sewage water from the building,

3. Technical condition with the presentation and analysis of the known solutions

Beat exchangers are intended to be used for the heat transfer from one medium io another which can be performed in several different ways.

The flow In the exchangers can be parallel, cotinterourrcnl and cross-flow.

Meat exchangers can be classified in several ways.

One of the ways is to classify them by the application purpose to the coolers and heaters.

Countercurrent construction is the most efficient as it can transfer the highest amount of the Beat from the heating medium due to the fact that the medium temperature difference along any unit of distance is higher:;· · · .

Just as all devices, heat exchangers are produced in the way to he the most economical as possible.

In terms of heat exchangers tills means that they should have the biggest possible heat exchange surface, same as the highest possible heat transfer coefficient. As various flow kinds have different heat transfei- coeficient , ceertain impiants are often installed mto the exchangers, providing to direct the flow of the fluid through the exchanger in order to create or improve the turbulence.

f here aie difFerent types of the exchangers.

Shell and tube heat exchanger is constituted of a Series of tubes. One bundle of the tubes contains the fluid that can be either cooled or heated. The second fluid flows over the tubes that are heated or cooled, so that it can transfer or aibsorb the required heat quantity. This kind Of the exchanger is generally used in high- pressure applications and the higher temperatures. in construction process of the tubes contained: in heat exchangers pype ttibe ih tub¾ it is necdssary fo take inte the consideration the fotibwifig phraineters:

- Tube diainetef

- Tube thic¼ness .

- Tube length

-i. Tube distance

- Tube corrugation

- Tube positions in layout

- Construction with the baffles

Blatebesl exchafigers .

The second type of heat exchangers is the plate heat exchanger.

tt is composed of many thin, slightly separated plates which have very large surfaces and passages for the fluid flow that provide tire heat to be transferred. Such a form of stacked plates can be better exploited m the default area than the shell and tube heat exchanger.

Improvements in the technologies of gasketing and brazing have made the plate heat exchangers more practical .

There are different types of the plate heat exchangers of a brazing kind like exchangers produced by brazing, immersing, vacuum tending or welding.

Tae third type of heat exchangers is plate and tube exchanger that combines the technology of the plate best exchanger and shell and tube heat exchanger. It contains the set of fully welded round plages produced under the pressure, then cut and welded one to another.

The technology of plate and tube heat exchanger offers the high heat transfer, high pressure, high operating temperatures, complete size and tow possibility of the deposits to appear.

The fourth type of heat exchangers uses the accumulation mass construed from wires in a form of the honeycomb that rotates slowly on a vertical shaft. The warm fluid flows on one side and transfers the heat to the rotating mass that accumulates the heat, while warm fluid is cooling, On the other side, a coot fluid flows over the heated mass, taking over the accumulated heat, while warming up.

Lamella· heat exchanger is a type that uses passages stacked in form of sandwiches, containing the lamellas in order to increase the efficiency of the unit.

Plate heat exchangers with the profljed ptcte

This type is used in a dairy industry for cooling of the milk in bulk containers.

Profiled plates proVidjs cpoilrtg n^rjy dn-fhe completer dohtatner w!thtiui the: gaps :Wh¾h might appear between the tubes WeVtied on the outer side ofthe container.

Heat exchangers with the change ofthe aggregate state

This type is: a typical Steam boiler Used for the industrial distillation ibwem, same as a typical condenser to cool the surface using water.

Power plants using steafo-dHveri turbines mainly use heat exchanger in order to make the water boiling and evaporate. Heat exchangers producing the stream from foe water are often called boilers bf steam generators. Each thermal power plant Uses surface condensers that turn exhausting steam from the turbines into the condensate (water) which is re-usable (if faw of thermodynamics). Direct cOntact heat exchangen;

Transfer of the heat between the warm and cool flaws in the direct contact heat exchangers is performed without the separating wall. Classification of such heat exchangers based on the aggregate state is a follows: gas-liquids, two miscible liquids, solid-liquids and solid-gas.

This type of We beat exchangers is mainly used for air conditioning devices for humidification, cooling of water ahd cbndensation facilities.

Spiral hem: exchangers

Spiral heat exchanger can appear in We form of the curved tubes, but more often term spiral exchanger is referred as a pair of the flat plates curved in order to make two channels Wat are upending in countercurrent principle. Bach channel contains one long curved passage, Main advantage of ibe spiral heat exchanger is iis high space usability.

There are three main types of the flow in We spiral heat exchanger;

- Countercwrent

- Spiral flow / cross flow

- Distributed steam / spiral flow

Concentric heat exchangers are new form of beater construction that is produced by placing numerous tubes of a various diameters into the shell, one into the another tube. Appropriate partition enables two fluid flows, providing the turbulent fluid flow, long path of the heat exchange, resulting with a large temperature decrease. Utilization of thus type of the exchangers gives excellent results in use of We waste heat arisen in process of desalination and dredging of the steam boilers, same as on ail other locations where the scale is formed Wiring the cooling process, considering that turbulent flow induces scale particles to tear off, same as seif clean! ng process an We exchanger surface.

According to the information available, there has not yet been constructed or being in use a heat exchanger that operates by transfer of the water into the ice.

Company Solar Bis uses a 12 cubic meters capacity reservoir buried in the ground to draw out the heat from the water, turning it into the ice. After all the water in the reservoir is frozen, it can only be expected the ice to be gradually melted in the ground, so the process can be repeated. Tins method is not offering the continuous water icing with the ice ejection and new water injection.

4. Representation of the invention essence.

The -essence of foe ihyehtiph is Wat the exchanging surface is a cylindrical chamber on which the heat transfer is performed and We ice is formed. Mechanism which is releasing the ice is an electromotor with We pitij^mttied frpfti reducer that is constantly femdyihg We ice using ihe knives, releasing the exjbhahging surface to bave the maxi mum heat exChahge. Concerning that the ice is light it gets raised to the surfd# of the syateh The SeriSor Which is Weasutirig the ice thickness is programmed to open the electromagnetic valve and pour We fresh water m, throwmg We ice out to the sewage.

A basic characteristic of the invention is Wat the icing heat has never been used before in the maid due to the fact that there was no practical solution for a continuous ice removal from We exchanging surface. This construction enables such process which has been successfully proven on the prototype that is in uSe. 5. Short desCri priori of the dialing

Chamber heat exchanger with the mechanism for ice removal consists of the shell (pos. 1 ), bottom and the lid with unfixed connection that is attached to the electromotor with reducer -(pos·, 4).

The shaft (pos. 2) settled into the bearings at toe bottom anti the lid, containing toe supporting construction of the knives (pos. 8) is cleaning both externa! and internal sides of the chamber’s exchanging surface.

The sewage water enters through the pipeline (pos. 9) and the water itself passes through toe exchanger and tmnsfers the heatto the freon.

Besides, chamber heat exchanger with ice temoving mechanism can use ali other water souces oearby:

- city water supply system

- well water

- water from the streams, rivets, fakes or poods no matter the water: temperature

- sewage water

6.. Detailed description of the least one mode for toe invention substantiation

The best modus to use renewable heat sources is me of toe heat pumps that are working on three principles of heat transfer from toe sources as ground, wafer and toe air. The best results are accomplished using the well water, because system’s coefficient of the performance (OOP) ranges from 1 :3,5 to 1 :6 (1 k W of the energy used for the compressor operation produces 3 5 - 6 fcW of toe heat).

Heat pumps manufacturers worldwide have increasing problems in use of the water-water system due to the lack of the well water and get oriented to the wafer-air heat pump systems whose efficiency is significantly lower and its operational mode is related to toe numerous problems on die lower temperatures in toe environment.

This invention shall redirect the future use of toe heai pumps due to the fact that the heat source besides too sewage system of the building (which provides toe highest amounts of the beat) can be a city water supply system, as well as water from the rivers, streams and lakes even when it is frozen. The point is that the water temperature below the Ice is 2 - 3°C with the latent icing temperature. Tots method provides the small amount of the water to satisfy needs of the largest heat pumps. It is specially favourable that the proposed sources provide the unlimited amounts of the water.

Presently, heat pumps are largely in use worldwide. This invention will even expand their use due to the fact that there will be no need to search for the heart sources, which was the biggest problem so far.

Using this invention, complete heating facility will be delivered as one block unit and the final user will only need to connect it to the sewage system, water supply system, power source and heat consumption units (radiator ov undeFtioor heatingl that will simplify a market launching of the complete heat pump fhdiiify and increase of its market position.

7. Application modd for the invention

Besides the facilities : of the heat pumps, use of chamber beat exchanger wifb toe ice removal mechanism is also expected to find its applicability in many other technology processes as food industiy, dairy industry, chemical plants and others.