EP4677282A1

EP4677282A1 - Chilled beam system with heat transfer fluid

Info

Publication number: EP4677282A1
Application number: EP23927769.2A
Authority: EP
Inventors: Malik ÇAGLAR
Original assignee: Enover Isi Sistemleri AS
Current assignee: Enover Isi Sistemleri AS
Priority date: 2023-03-10
Filing date: 2023-08-28
Publication date: 2026-01-14
Also published as: WO2024191365A1; TR2023002676A2; EP4677282A4

Abstract

The invention relates to the chilled beam system (1) with heat transfer fluid, which quickly cools the indoor air by transferring the heat to the phase-changeable heat transfer fluid in order to bring the air of living spaces to the desired comfort conditions. The invention is especially related to the chilled beam system with a heat transfer fluid containing a heat transfer fluid containing colemanite, borax, Al₂O₃, SiO₃, CuO, TiO₂, SiL, szaybelite, boron carbide, boron solid particles between 10-200 nanometers in a heat transfer fluid that can change the phase by taking the ambient air heat passing through the heat exchanger fins and cooling it down.

Description

CHILLED BEAM SYSTEM WITH HEAT TRANSFER FLUID

TECHNICAL FIELD

The invention relates to the chilled beam system that cools the indoor air quickly by transferring the heat to the phase changeable heat transfer fluid in order to bring the air of the living spaces to the desired comfort conditions.

The invention is especially related to the chilled beam system with a heat transfer fluid containing a heat transfer fluid containing colemanite, borax, AI2O3, SiOs, CuO, TiCh, SiL, szaybelite, boron carbide, boron solid particles between 10-200 nanometers in a heat transfer fluid that can change the phase by taking the ambient air heat passing through the heat exchanger fins and cooling it down.

THE KNOWN STATE OF THE TECHNIQUE

Air conditioners are devices that regulate the air according to comfort conditions. Chilled beams are also air conditioning systems often used in large and commercial buildings. Chilled beam systems are systems that provide convective cooling. Chilled beams are usually installed at higher levels of the room. In this way, it saves the space allocated to air conditioning systems. The chilled beams act as heat exchangers. Pipes connected to each other by fins are mounted in sheet metal casing. The cooled heat transfer fluid circulated in the system takes the heat of the hot air and cools the ambient air. Water is generally used as the heat transfer fluid in chilled beams. The operating cost is lower than air systems. Although the temperature of water remains higher than air during the heat transfer process performed in the same amount to cool water and air, their ability to cool the environment is similar. Since air is not used in the system, the air circulation fans do not work or work less. They have low operating costs, require little or no maintenance as they contain few or no moving parts and operate quietly. Since the chilled beams are designed to provide noticeable cooling, the temperature of the heat transfer fluid circulated in the system should be higher than the dew temperature in the environment to be cooled in order to prevent condensation that may occur on the chilled beam.

Chilled beams are divided into active chilled beams and passive chilled beams. Passive chilled beams work based on natural convection current. Warm air, which has a lower density than cold air, rises and enters the chilled beam system. The cold air cooled in the chilled beams, on the other hand, descends under the influence of gravity, since its density is higher than the warm air. Sufficiently sized openings and regular spacing should be provided throughout the ceiling to ensure proper air circulation. Separate fresh air supply ducts and evacuation systems are required for passive chilled beams. Active chilled beams, on the other hand, contain a fresh air distribution system, which eliminates the need for an additional system. The air evacuation system is also required for active chilled beams and must be installed independently.

Low-temperature heating is also possible in active chilled beam systems. Heating of the environment can be achieved by using warm heat transfer fluid and warm primary air, which are not at very high temperatures.

In existing systems, there are negative reasons such as slow conduction of heat, high energy consumption to cool the heat transfer fluid, and higher operating costs due to this unnecessary cost.

As a result, the need for a new economical, convenient, chilled beam system with heat transfer fluid and the inadequacy of the existing solutions have made it necessary to make a development in the relevant technical field in order to solve the above-mentioned problems existing in the current technique.

THE PURPOSE OF THE INVENTION

The present invention relates to the chilled beam system that rapidly cools the indoor air by transferring the heat to the phase changeable heat transfer fluid in order to bring the air of the living spaces to the desired comfort conditions, which was developed to eliminate the disadvantages mentioned above and to bring new advantages to the related technical field.

The most important aim of the invention is to contain a heat transfer pipe with a phase changeable heat transfer fluid. The phase-change fluid conducts heat by passing from the liquid phase to the vapor phase. After transmitting the heat, it condenses and returns. Thanks to the solid particles between 10- 200 nanometers such as colemanite, borax, AI₂O₃, SiO₃, CuO, TiO₂, Si L, szaibelyite, boron carbide, boron in the phase change heat transfer system, evaporation accelerates with the heat taken. Since these nanoparticles act as a catalyst, heat transfer is done quickly. After heat transfer, these solid particles do not clump together and do not stick to each other during condensation. During condensation, it cools slowly thanks to the nano-sized solid particles that crash into the inner walls of the heat pipe. In this way, it has a high capacity to retain heat. Thanks to these nanoparticles, heat pipes can be prepared without vacuuming. There is no need for sintering, corrugation or pocketing on the inner surfaces of the heat pipes. Thus, it can work vertically and horizontally without any shape restrictions. Another aim of the invention is that the fluid that can change phase as a result of our R&D studies has a heat transfer coefficient of 16098 W/mK. Therefore, the invention provides a fast heat transfer by reacting very quickly.

Another aim of the invention is that the heat transfer fluid contained in it does not have any flammable, explosive, allergen, carcinogenic, pathogenic effects, so it does not adversely affect the environment and human health.

The structural and characteristic features of the invention and all its advantages will be understood more clearly thanks to the figures given below and the detailed description written with reference to these figures and for this reason, the evaluation should be made taking into account these figures and detailed explanation.

FIGURES TO HELP UNDERSTAND THE INVENTION

Figure 1 - The drawing that gives the general schematic of the subject of the invention is the chilled beam system with heat transfer fluid with a phase changeable heat transfer fluid.

Figure 2 - The drawing that gives the general view of the subject of the invention is the chilled beam system with heat transfer fluid with a phase changeable heat transfer fluid.

Figure 3 - The drawing that gives the image of the heat transfer fluid filling location and the heat exchanger of the subject of the invention is the chilled beam system with heat transfer fluid with a phase changeable heat transfer fluid.

REFERENCE NUMBERS

1. Chilled beam system with heat transfer fluid

2. Heat exchanger

3. Heat transfer pipes

4. Fins

5. Primary air

6. Supply air

7. Ambient Air

8. Chilled ambient air

9. Nozzles

10. Mixing room

11. Fresh air distribution channel

12. Heat transfer fluid filling place DETAILED DESCRIPTION OF THE INVENTION

In this detailed explanation, preferred embodiments of the chilled beam system (1) with heat transfer fluid are explained only for a better understanding of the subject and without any limiting effect.

The chilled beam system (1) with heat transfer fluid, which is the subject of the invention, shown in Figures 1-3, consists of heat exchanger (2), heat transfer pipes (3), fins (4), nozzles (9) and heat transfer fluid filling place (12). In chilled beam systems with heat transfer fluid (1), ambient air (7) passes between the fins (4) of the heat exchanger (2) and transfers its heat to the heat transfer fluid, which can change phase, does not agglomerate, and may contain solid particles inside the heat transfer pipes (3). The temperature of the ambient air (7) that transfers its heat decreases. In chilled beam systems with heat transfer fluid (1), there is a fresh air distribution channel (11). The primary air (5) passes through the fresh air duct (11) and is delivered to the nozzles (9). The primary air (5) passing through the nozzles (9) combines with the cooled ambient air (8) in the mixing chamber (10) and is given back to the environment in the form of supply air (6). Since the density of the supply air (6) is higher than that of the ambient air (7), it descends under the influence of gravity, while the ambient air (7), which has a higher temperature and lower density, rises and enters the chilled beam system (1) with the heat transfer fluid, and this circulation continues and the environment is cooled.

While the ambient air (7) transfers its heat to the heat transfer fluid inside the heat transfer pipes (3), which can change phase, does not agglomerate, and may contain solid particles, it cools down, while the heated phase changeable heat transfer fluid goes to the outside cooler unit located outside through the pipes, transfers its heat to the outside and cools, and returns to the chilled beam system (1) with the heat transfer fluid.

While the primary air (5) passes through the outdoor ventilation unit through the fresh air distribution channel (11) and is conveyed to the environment by the nozzles (9), the return air is delivered to the outdoor ventilation unit through the air discharge ducts and is exhausted. Thus, fresh air circulation in the environment is ensured.

In our invention, there are solid particles between 10-200 nanometers such as colemanite, borax, AI2O3, SiOs, CuO, TiCh, Si L, szaybelite, boron carbide, boron in the phase changeable heat transfer fluid, and the heat transfer fluid is filled from the filling place (12) to the chilled beam system (1). As an alternative in our invention, the phase changeable heat transfer fluid may contain the above- mentioned solid particles between 10-50 or 50-100 or 100-150 nanometers.

The scope of protection of this application has been determined in the claims section and cannot be limited to what is described above for exemplary purposes, it is clear that a person skilled in the art can demonstrate the innovation in the invention by using similar embodiments and/or can apply this embodiment to other areas with similar purposes used in the relevant technique. Therefore, it is obvious that such structuring will lack the criteria of innovation and especially overcoming the known state of the technique.

Claims

1. The invention relates to the chilled beam system (1) with heat transfer fluid, which cools the indoor air quickly by transferring the heat to the heat transfer fluid, which can change the phase, in order to bring the air of the living spaces to the desired comfort conditions, and its feature is; characterized by in the heat transfer pipes (3), which takes the heat of the ambient air (7) passing between the fins (4) of the heat exchanger (2) and cools it, and discharges this heat to the outside by means of the outdoor cooler unit; the heat transfer fluid containing colemanite, borax, AI₂O₃, SiO3, CuO, TiO₂, SiL, szaybelite, boron carbide, boron solid particles in the phase change heat transfer fluid between 10-200 nanometers.

2. Chilled beam system (1) with heat transfer fluid in accordance with claim 1, and its feature is;

It is characterized by containing heat transfer fluid with a heat transfer coefficient of 16098 W/mK.