EP0867678A1 - Multicoaxial tube heat exchanger - Google Patents

Abstract

The user can accept the primary energy with different or the same pressures and temperatures, whereby the type of energy carrier is freely selectable corresponding to requirements. Tubes are soldered, i.e. one tube for the primary circuit (3) and four tubes (2,4,6,7) for the various user units, bent into a coaxial spiral form. The centrally located tube (3) of the primary circuit is surrounded by the four tubes (2,4,6,7) for the various users.

Description

Field of heat engineering, especially the energy transfer from one Energy medium to another. The invention enables direct, and if required simultaneous energy transfer from the primary energy source (e.g .: Refrigerants, water, steam, oil or exhaust gases) to the energy media (e.g. water) several consumers.

The numbers in the following paragraph refer to item numbers in drawings 1 and 2:
At the current state of the art, several consumers (1, 2, 3, 4), whose energy is supplied by one and the same medium, are supplied indirectly via a primary circuit (5) and several secondary circuits (see drawing 1). Starting from several consumers (1,2,3,4), this solution requires considerable effort to supply those who are independent and completely separate (the first consumer is excluded from this). You also need a heat exchanger (7,8,9), a circulation pump (6) as well as various fittings (e.g. shut-off valves, check valves) and control devices (see marked area in drawing 2). By using an additional heat exchanger, the temperature of the consumer's energy medium drops by a temperature difference ΔT = TA1-TA2

This usual structure can be found in the specialist literature (e.g .: paperback for heating and Air conditioning technology from Recknagel Schrimmer Schramek was published by R.Oldenburgverlag or heat exchangers from Walter Wagner published by Vogl Verlag or Industrial Heat Exchangers by A.J. Hayes, W.W. Liang, S.L. Richlen and E.S Tabb edited by American Society for Metals or further Design and Operation of Heat Exchangers by W. Roetzel, P.J. Heggs and D.Butterworth appeared in Springerverlag) are removed.

The numbers in the following 3 paragraphs refer to item numbers in drawing 3:
This invention enables the direct and simultaneous transmission of energy to several, absolutely separate and independently operating consumers (1, 2, 3, 4). Furthermore, the invention makes it possible to dispense with the additional expenditure of heat exchanger, circulation pump, various fittings and control devices per consumer (see marked area in drawing 2). As a result of the elimination of the additional heat exchanger and the circulating pump, the efficiency increases, on the one hand, and the temperature of the energy medium of the consumer increases by ΔT. (The first consumer is again exempt from this).

The invention creates the possibility of multiple consumers (1, 2, 3, 4) on the to heat the same temperature. You can, for example, with the energy in one Condensation circuit of a heat pump is available without using a additional heat exchanger, as previously required, the domestic hot water and heat the heating water, and also to the same temperature.

Furthermore, the invention allows a much simpler structure of the system and thus considerable cost savings.

Different options for execution 1. Possibility of carrying out the invention:

The numbers in the following paragraph refer to item numbers in drawing 4: For example, solder 5 (one tube for the primary circuit (4) and four molded tubes (2,3,5,6) for the various consumers) bent into a coaxial spiral shape Shaped tubes, the tube (4) in the middle of the primary circuit of the four Shaped tubes (2,3,5,6) of the various consumers is surrounded. (See detail X).

2. Possibility of carrying out the invention:

The numbers in the following paragraph refer to item numbers in drawing 5: Solder or weld for example 5 (a tube for the primary circuit (4) and four shaped tubes (2,3,5,6) for the different consumers) to coaxial snake shape bent molded tubes, the tube (4) in the middle of the primary circuit of the four shaped pipes of the different consumers (2,3,5,6) is surrounded. (see detail X).

3. Possibility of carrying out the invention:

The numbers in the following paragraph refer to item numbers in drawing 6: For example, solder 5 (one tube for the primary circuit (3) and four tubes (2,4,6,7) for the various consumers) into coaxial spiral-shaped tubes, the in the middle pipe (3) of the primary circuit of the four pipes of the different Consumer (2,4,6,7) is surrounded. (See detail X).

4. Possibility of carrying out the invention:

The numbers in the following paragraph refer to item numbers in drawing 7: For example, solder 5 (one tube for the primary circuit (3) and four tubes (2,4,6,7) for the various consumers) into coaxial snake-shaped tubes, whereby the pipe (3) in the middle of the primary circuit of the four pipes of the different consumers (2,4,6,7) is surrounded. (See detail X).

5. Possibility of carrying out the invention:

The numbers in the following paragraph refer to item numbers in drawing 8: Soldering for example 4 (four tubes (2,4,5,6) for the different consumers) too coaxial spiral shape bent tubes, these in another larger tube (3), for the primary circuit. (See detail X).

6. Possibility of carrying out the invention:

The numbers in the following paragraph refer to item numbers in drawing 9: Soldering for example 4 (four tubes (2,4,5,6) for the different consumers) too coaxial snake shape bent tubes, these in another larger tube (3), for the primary circuit. (See detail X).

Claims (1)

Multicoaxial tubular heat exchanger for direct and simultaneous energy transfer to several, absolutely separate, and independently working consumers. (Drawing 3)
The invention is characterized in that the consumers can absorb the primary energy at different or identical pressures and temperatures, the type of energy carrier being freely selectable according to the requirements.

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