CZ303803B6 - Storage hot-air heating system - Google Patents

Abstract

The storage hot-air heating system of the present invention makes it possible in the hot-air heating system to accumulate excess energy of a biomass heat source (1) in the full operation and using a maximum efficiency thereof, and to use said excess energy in periods of the heat source inactivity. The system is arranged such that it takes in warm (cool) air of the room (3) through air-conditioning distribution pipes (4, 7, 9, 10, 11) wherein said warm (cool) air is then supplied through air channels and chambers (3) across a floor structure. Here, the energy is transferred to a material exhibiting good storage properties (13), wherein the cool (warm) air (5) is discharged back into a room (6) or it is further distributed into other rooms of the building.

Description

(57)

The hot-air storage heating system allows the hot-air heating system to store excess energy from a biomass heat source (1) in full operation using maximum efficiency and to use it when the heat source is not in operation. The device is arranged so that the air (4, 7, 9, 10, 11) is taken from the room (2) through air ducts (4, 7, 9, 10, 11), through air ducts and chambers (3). accumulation properties (13), wherein the cool (warm) air (5) is discharged back into the room (6) or further distributed to other premises of the object.

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Hot-air storage system

Technical field

BACKGROUND OF THE INVENTION The present invention relates to a system for the heating or cooling of buildings affecting their thermal environment, in particular by hot-air storage of energy over time in a full-area point-carrying storage floor.

BACKGROUND OF THE INVENTION

Biomass is increasingly being used for heating (or re-heating) residential buildings with significant state support. Mostly it is wood in fireplaces, stoves and boilers. Quality products have declared efficiency (up to 88%) at an output of more than 50%, causing overheating of rooms at the time of heating. When power is reduced, energy is wasted and product malfunctions (carbonization, increased emissions, glass contamination, etc.). To avoid these phenomena, it was necessary to install demanding hot-water heating with accumulation tanks of considerable volume (min. 50 l / kW of heat source output) incl. overheating insurance measures.

In summer, the rooms overheat (even in shading) only briefly and are mostly night-day temperature fluctuations, because in the Czech Republic climatic conditions only in exceptional cases the night temperature rises above 20 ° C (so-called tropical night). Energy-intensive air-conditioning systems dealing only with heat surplus or cooling systems with various storage accumulators, solving the long-term balanced energy balance, are used for cooling buildings in summer.

The aim of the inventive activity was to accumulate energy from hot-air heating (cooling) so that it could be used in a daily cycle with the opposite energy demand, without having to install energy and investment-intensive heating and cooling systems.

SUMMARY OF THE INVENTION

The invention relates to a system favorably influencing the thermal conditions of buildings and allows economical hot-air heating or cooling of building objects. Excess heat or cooling energy from the room resulting from heating (heating) from a biomass heat source, alternatively from another source of heat or cold or overheating of the room in the summer period, is transported to the floor structure by air ducting with control flaps.

The principle of the invention is that this excess heat or cooling energy is stored in pressure-sealed full-area air ducts and chambers also forming point floor support elements with a maximum contact heat transfer surface and a determined calculated pressure loss of air into the floor storage material. Accumulated energy is ready for subsequent use when the heat or cold source is no longer in operation.

Air supply to the room from the chambers and ducts back is realized by sophisticated ventilation systems with temperature sensors, electric regulator and fan. Furthermore, air is distributed to other premises of the building. The amount of energy transmitted Q (J) depends on the weight of the storage material m (kg) and the specific heat consumption c (J. kg ¹ K ¹ ). On the basis of tests, table values of specific heat consumption and possibilities of construction, the inventive activity was evaluated as an optimal concrete mixture with specific consumption C = 0.789 J.kg ^ K ^-1 . The calculated accumulated energy is 69.616 kJ for the calculated values of the thermal difference of 10 ° C, the weight of the concrete mixture 2.200 kg.m- ³ , the room area 30 m ² and the total thickness of the concrete layers 0.12 m. This corresponds to a power output of 19.4 kW. Compared to the water used so far

The accumulation tank according to the invention corresponds to a water storage tank according to the invention, corresponds to a storage tank according to the invention to a water tank of size 1. The benefits of the present invention are obvious in the field of energy storage since one room is able to replace the method accumulation without the need for special space for the accumulation unit and other increased investment costs. The extent of accumulation is further determined by the floor area of the building used and it can be determined depending on the power output and the way of use.

Excess heat or cooling energy from a heat or cold source in its full operation using maximum efficiency is stored for subsequent use of stored energy. Given that the fuel is mostly wood and sources such as fireplaces, stoves and boilers with a declared efficiency of up to 88% for quality products only at an output of over 50%, overheating rooms at the time of heating while maintaining efficiency, or occurs to waste energy and product malfunctions (carbonization, increased emissions, glass contamination, etc.). The invention overcomes these drawbacks. The equipment also replaces underfloor heating when the heat source is used more intensively.

In addition to the aforementioned invention, it is also possible to create ventilation ducts that do not transmit noise from the source room, since in the case of using a heat or cold source for other rooms of the building, all the noise of the source room is completely absorbed by the floor chambers.

BRIEF DESCRIPTION OF THE DRAWINGS

The hot air heating system is shown schematically in Fig. 1, which is a section of the proposed room. The ground plan is also the layout of the building and the required storage value.

DETAILED DESCRIPTION OF THE INVENTION

The invention was installed, tested and tested during the reconstruction of the showroom of fireplaces and stoves, where it was not possible to provide another way of heating, resp. non-economic electric heaters were installed. The reconstructed room 6 of the showroom is located in a former older family house and its dimensions (30 m ² ) also resemble the living room of the family house. The floors of the ground floor were made of thermal insulation (100 mm), storage material of floor 13 (concrete) with air ducts and chambers 3 (130 mm) and surface treatment of the floor from tiles. The source of heat is a high-quality fireplace stove from HARK with an output of 9 kW. The air ducts 7 are led from the source and heat to the floor. The channel temperature agent 9 regulates the fan 4 in dependence on the exhaust air temperature 2 (overheating protection). The total portable area in the air ducts and floor chambers 3 is approximately 50 m ² . A fan 4 is placed on the inlet from the floor, and then air 5 is supplied to the room 6 with the heat source 1 via the control flap 10 and to the adjacent room. The installation of an accumulation hot-air heating system has confirmed the calculated values of the present invention and in particular the storage of excess heat or cooling energy 12 from the heat or cold source 1 in its full operation using maximum efficiency and subsequent use of accumulated energy 8 when traffic. The whole system is controlled by an electric regulator 11. The showroom is also intensively used to cool the space on warm summer days.

Industrial applicability

The present invention is intended generally for building objects, but it is used especially in new buildings and reconstructions of family houses, where the installation of fireplaces and stoves becomes mostly a matter. In particular, the use of the invention will bring considerable economic and operational advantages to the builders of the invention

-280330803 B6 in the period when biomass heating is supported by state subsidy programs. The invention brings a technical-economic and commercial effect, satisfies the long-felt need of the company and overcomes the prejudice of the company and experts that the accumulation of heat with a daily frequency can only be carried out in the water reservoir controlled by the building.

Claims (7)

PATENT CLAIMS A hot-air storage system consisting of a heat or cold source (1) and air ducts (7) for the controlled removal of hot or cold air (2) from a source (1) to and from the floor back to a heated or cooled room (6) a fan (4), wherein at the outlet of the exhaust air from the floor, a temperature sensor (9) for regulating the fan speed by means of an electric regulator (11) in dependence on the exhaust air temperature (2) is placed in the air ducts (7); ) are provided with a control flap (10) for the return of air to the room (6), characterized in that the floor of the heated or cooled room is made of storage material (13), in which air channels and chambers are formed (3) for storing excess heat or cooling energy (12) for later release of this e nergie. 1 drawing List of reference marks 1 Heat or cold source 2 Air outlet 3 Air ducts and chambers 4 Fan 5 Air intake 6 Room 7 HVAC distribution