DE2128331A1 - PIPE TO LAY IN A FLOOR, WALL OR CEILING - Google Patents

Description

Applicant:

Hermann Lohoff, 463 Bo chum, Wasserstr. 424

"Tn a floor, wall or ceiling to be laid .One Direction tubing"

(Addition to patent application P 19 02 688.1-16)

The subject of patent application P 19 02 688.1-16 is a pipe string, consisting of one in the building barrier layer of a floor, a - / and or a ceiling in the form of a continuous Pipe coil or pipe spiral to be laid flow and "return line, whose flow channels of the same size paral-IeI arranged to each other, are to flow through in countercurrent by a set of water and over their entire length a common contact surface <3 to have mutual heat exchange.

This pipe string stands out from all other known ones and pipe strings serving the same purpose in that it is fed by means of a hot water set a completely uniform surface temperature of the relevant The building structure is able to create a building layer rait needs less heat than when heated with conventional heating systems.

It has now been found that the aforementioned pipe string after Main application P 19 02 688.1-16 is not only for heating, but also excellent for cooling building layers suitable. For this purpose, the pipe string is used for cooling a Cold water to flow through the room. Here is

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BATH ORIGINAL

It is essential that the surface temperature of the building block layer, depending on the ambient air condition, must not fall below the limit temperature at which the water vapor contained in the air pits to conr) on the building surface.

It should be noted at this point that pipe strings apparently laid in the floor are also known for cooling. City or well water flows through these pipe strings, which in our latitudes has a temperature of, for example, 8 to 14 Ό . In 'fassertemperaturen for example, 14- ⁰ G and the resulting surface temperature of "l ^' O en the aforementioned Gr ζ temperature already exceeded on numerous days a year. To prevent this, you must either completely omitted on these days to a cooling or water are heated or mixed with warm water, which is not only expensive, but also causes seeking high operating costs. a further disadvantage is that the bottom be cooled unevenly kannj thereby building cracks and a decrease in the Behaglichkeitsgrädes are unavoidably _o All of these disadvantages .Ie are remedied by the arrangement of the present additional invention, since through its countercurrent heat exchange principle in the vicinity of the entire pipe string ¹ - a completely uniform temperature is built up and also a pre rl is allowed on the temperature of the cooling water, which are below the previous critical flow temperature can, whereby in turn the whole efficiency of the cooling system increases.

According to an advantageous feature of the invention, the leading line is in conjunction with a heat exchanger, d <= r from a ^ r laid in the ground, to be passed through directly by the feed water.

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flowing "pipe coil, preferably only plastic, is formed or consists of a ^ r" cooling tower, which is directly connected to the flow int large cooling capacities honored, especially with her at an outside air temperature of 32 ° 0 and 4-O? orelativer humidity nor a cooling water temperature of 21 ⁰ G can be achieved.

According to a particularly advantageous feature of the invention, d.PT Tärraeaustauscher consists of the evaporator of a heat pump, whose

Condenser as a pipe coil laid in the ground also ahead
is preferably made of plastic, with the refrigerant circuit of the "Järmepunpe" optionally being switched to a circuit operating as a cold machine for the optional heating or cooling of the structural element Drive the compressor of the heat pump or refrigeration machine necessary electrical energy is formed, while the uip a multiple higher cooling or heating power st ^ tp of the ^1st Er ^ r ^ ieh are taken.

As special? Advantageously, the cooling system has been found when the inside diameter of the flow and the R ¹ "cklaitfstranges maximum of P is? n I ¹ ^ and the! pitch between two pipe sections not vr '^ Bev than 18 cm.

Several Ausfübrungsbeispiele d ^ r invention are in the drawing shown. Show:

T? -I-. _# -j p, - ;-p. "'f> h« according to the scheme according to the invention with three different types of cooling of the pre-interference,

20988 1/0 1 S 5 BAD original ■

Fig. 2 shows a further embodiment, for optional cooling and en Heating of the pipe string and

ig. 3 a Mdlier i-x diagram for moist air, with the one here limit curve of interest.

In Fig. 1, the pipe string 1 according to the invention is shown in the structural layer 2 of a floor, the flow leg 1 'of which is shown in dashed lines and the return leg 1 ″ with a solid line is embedded on all sides of a wire-mesh mat 2 'of the pipe line 1. between the building layer 2 and the fixed Bauuntergrund, Z ₀ as a layer of concrete 3' is an intermediate layer 2 "for thermal insulation, moisture blocking and * impact sound insulation. The leader line 1! and the return line 1 ″ are connected via a collector 1 ″ ¹ or 1 to a boiler 4 which, in the case shown, is provided with a closed expansion vessel 4 ′ and a safety valve 4 ″. In the flow line 1 ″ is a water pump 5 h and a three-way mixing valve 6, which is connected to the return line 1 ″ ^{via an intermediate line 6 1.}

In the case shown, ^{four different embodiments 7j8,9 »20 are shown on the flow line 3 1} for cooling the flow water, which can be used separately or optionally in combination. Here, 7 denotes a pipe coil, preferably made of plastic, laid in the ground 7 ^{1 , which is connected to the feed line 1 'via the flow line 7 ″ and the return line 7 IM} as well as via the valves 10, 10'. Should with this cooling system the fore

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• running water are cooled, the valve 11 is closed while the two valves 10, 10 * are opened. Then the pump 5 drives the flow water via the valve 10 and the flow line 7 "into the coil 7j in which it is cooled, from there via the return line 7 ^IM and the return valve 10 'back into the flow line 1' and then into the Structural layer; 2 laid part of the supply line. After running through the entire pipe string 1, the now heated cooling water arrives via the return line 1 ″ in the return flow ammler 1 and via the intermediate line 6 ¹ to the pump 5 ″ where the cycle begins again. The particular advantage of this system is that there are no additional operating costs, for example for operating a fan, and the coil 7 itself, insofar as it is made of plastic, is corrosion-resistant and does not require any maintenance.

The "wide cooling system consists of a cooling tower 8, which is connected via the lead line 8 and the return line ¹ -8" and via the valves 8 ^"1 and 8 with the flow line 1 ¹ in combination. Dl · In this case at 5 ¹ in the flow line 1 ¹ inserted pump withdraws the cooling water via the line 8 ″ from the cooling tower 8 and presses it in the manner described above via the "!" Ufsamaler 1 "'into the pipe line 1, where it is pushed back to line 1 "via the return" Miller 1 ", the intermediate line 6 'via 4 *" tentil $'"into line 8 ¹ and from there into the cooling tower 8. The particular advantage of this cooling tower is that it can be designed exactly to the size of the maximum cooling load and that it can still be used to achieve a cooling water inlet temperature of 21 ⁰ O with an outside air condition of 32 ⁰ O and a relative humidity of 4 €. A sol-

rather cooling tower comes into consideration especially where in large offices, hotels or the like, large cooling loads occur.

A third possibility for cooling the water in the flow line 1 ¹ is a heat pump circuit 9> the. consists essentially of the evaporator 9'i, a compressor 9- "» a condenser 9 "'and a pressure reducing valve 9. In the evaporator 9 ¹ , heat is extracted from the flow water by the refrigerant, which evaporates as a result. This refrigerant vapor is sucked off by the compressor 9 "and compressed to a correspondingly high temperature. This refrigerant vapor of higher temperature is cooled down in the condenser 9"', which is provided with a large external heat exchange surface, by an air flow from

IV

where it turns over the pressure reducing valve 9 as refrigerant condensate reaches the evaporator 9 '.

A particularly advantageous embodiment of the last-mentioned cooling system is shown in FIG. In it is the condensate 9 ¹ "of the Pig. 1 by a buried in the ground or by Brunn

Well or river water around the coiled pipe 9 has been replaced. Furthermore, a four-way valve 15 is arranged between the evaporator 9 ¹ and the compressor 9 "and two pressure reducing valves 13 and 14 are connected between the coil 9 and the evaporator 9 ', of which by means of the valves 13 ^ι _ί 'Ί3" and 14 ', 14 "once the one 14 and once the other Λ 3 can work as a pressure reducing valve. During summer operation, the refrigerant circuit works as a refrigeration machine and is flowed through in the direction indicated by the solid arrows, with the heat exchanger 9 ¹ as an evaporator and the pipe coil

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9 °. As a condenser work. In winter, this refrigerant circuit can replace the boiler 4 shown in FIG. 1 by switching over the four-way valve 15. The coil 9 now works as an evaporator and the heat exchanger 9 'as a condenser. Heat is extracted from the ground via the pipe coil 9, raised to a high temperature level by means of the compressor 9 ″ and ^{transferred to the flow line 1 ′ via the condenser 9 1.} Since ″ the surface temperature of the floor shown in FIG as well as a temperature of

27 - 28 G must not exceed and therefore also the water temperature can be correspondingly low in the flow line, the overall system works with a high performance factor. That The same applies vice versa for the cooling in "summer mode".

The fourth possibility for cooling the water in the flow line 1 'is a groundwater circuit 20, which essentially consists of a container 20' charged with well water and a tube bundle 20 "inserted therein, through which the flow water of the pipe line 1 'after closing the valve 22 and At the same time, a submersible pump 25 sucks in the amount of groundwater ^{necessary for cooling from the groundwater sump of the soil 7 1} and presses it via the supply line 23 'into the container 20', from where it is returned via the return line 25 " reaches the groundwater sump. In this way, the height of the groundwater level is maintained, it being understood that the flow 2J 'and · the return line; 2? "To avoid circulation. The advantage of this execution

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Approximation form is that the arranged in the easily accessible Container 20 'located tube bundle 20 "as well as the container 20' can be easily cleaned and through the mixing valve 22 ' an admixture can take place.

The particular advantages of the pipe string according to the invention for cooling can be seen from FIG. The curve a drawn in the MoEier diagram shown indicates the outside air conditions occurring in our latitudes on summer days. In the case of fresh air ventilation, for example, this requires a room air condition at point A of 32 ^° C. and 4-0% relative humidity

W has a dew point temperature of around 16.8 ° C. This in turn means that the surface temperature of the structural layer 2 in FIG. 1 must not reach this temperature, since otherwise the water vapor present in the room air would begin to condense and the floor would become damp. Now, however, it has surprisingly been shown in the pipe string according to the invention that the flow temperature of the water may even be below the dew point of the room air, since due to the countercurrent principle of the flow pipe 1 if the temperature falls below the dew point too much,

. temperature is the immediate ambient temperature of the pipe string 1 is still above the dew point temperature, even if the rooms in question are provided with direct external ventilation are.

In the case of rooms, however, which are already provided with a dehumidifying system and are operated in recirculation mode, depending on the ambient air condition, for example at 25 ° 0 and 50-60% relative humidity, the pipe string 1 according to the invention has a cooling water inlet temperature of 12 ,, ^ ⁰ O. up to 15.5 ° 0 and a little below that without the critical floor surface cooling the room

Reach the dew point temperature of the respective room air condition would (see curve b in Fig. 3)

Another advantage of this cooling by means of the pipe string according to the invention is that the comfortable room temperature is higher than in a tree cooled with a conventional air conditioning system. But this in turn means that this cooling system is able to create a comfortable room temperature without a dehumidifying device, whereby the critical surface temperature of the building structure layer 2, if at all, is only reached on a very few days a year, even at maximum cooling load. It has been shown, for example, that with a flow temperature of the water in the flow line 1 ^r of 20 ° 0 and a surface temperature of the structural layer 2 of about 23-24 ° σ, a comfortable room temperature of 2-28 ° G could be achieved.

For economical operation of the pipe string according to the invention In large buildings, it is advisable to use an individual zone cooling or * heating to coordinate the different, by aligning the building according to the individual cardinal points occurring cooling or heating systems to connect several pipe strings 1 *, 1% 21 '21 "in parallel to each other.

Claims t

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Claims (2)

ΊΟ - Pat, corresponds to: ^f 1. \ Pipe string, consisting of a flow and return pipe to be laid in the structural layer of a floor, a wall or a ceiling in the form of a continuous pipe coil or pipe spiral, whose flow channels of the same size are arranged parallel to one another, in the countercurrent of a water at ζ are to be flowed through and have a common contact surface for direct heat exchange over their entire w length, according to patent application P 19 02 688.1-16, characterized in that the pipe string (1) has to be flowed through for cooling a room by a quantity of cooling water, 2. Pipe string according to claim 1, characterized in that that the flow line (1 ') of the pipe string (1) is connected to a heat exchanger (7,8,9 *). (Fig. D 3. Pipe string according to claims 1 and 2, characterized in that the heat exchanger is formed by a ^{pipe coil (7) laid in the ground (7 1} ) through which the feed water flows directly and which is preferably made of plastic. (Fig. 1) = 4. Pipe string according to Claims 1 and 2, d a d u r c h characterized in that the heat exchanger is made a cooling tower (8), which is directly connected to the flow line (1 ') of the pipe string (1) is connected. (Fig. 1). 209 8 81/01 SS 5. Pipe string according to claims 1 and 2, characterized in that the heat exchanger consists of the evaporator (9 ¹ ) of a heat pump (9), the condenser (9) of which is constructed as a pipe coil laid in the ground, preferably made of plastic. (Fig. 2) 6. Pipe string according to claim 5 for optional heating and cooling, characterized in that the The refrigerant circuit of the heat pump (9) can optionally be switched to a circuit operating as a refrigeration machine. (PiS- 2) 7. Pipe string according to claims 1 and 2, d a d u r c h characterized in that the heat exchanger consists of one Containers loaded with groundwater (2O ')> preferably made of plastic, and a tube bundle (20 ") inserted therein and washed by the groundwater, through which the Flow water of the pipe string (1 ') is passed. (see Fig. 1) 8. pipe string according to claims 1 and 2, characterized in that the heat exchanger consists of an evaporator (9 ')> a heat pump (9) ^ whose condenser (9 ^IM ) is acted upon by an air stream, (Fig "1) 9. Pipe string according to one or more of claims 1 to 7 »characterized in that the inner diameter of the flow and return line (1 ', 1 ") laid in the building structure layer (2) is at most 25 mm and the division (t) between two pipe strings (1) is not is larger than 18 cm. (Fig. 1) - 12 - 203881/0165 7128331 10. pipe string .according to one or more of claims 1 to 9 5, in particular for laying in large buildings, characterized ge ke η ή ζ eich η et that the flow line (1 ')
and further pipe runs (21 ', 21 ") for individual zone heating or zone cooling of the building are connected in parallel to the return line (1"). (Fig. 1) 2 09881/0155 Blank page