FR2811744A1 - HEAT TRANSMISSION SYSTEM FOR A STORAGE GENERATOR - Google Patents

Abstract

The present invention relates to a heat transmission system intended for a storage generator and isolated from the outside by an air void space. This system comprises fixed metal parts (8) and (9) which can be connected at will by moving parts (10).

Description

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  The present invention provides an electrical generator design

  storage tank designed to store a maximum of energy during off-peak periods and to restore it gradually and programmed

during peak hours.

  -o - To do this, the heat generator, object of the invention,

  includes an airtight metal enclosure (1) filled with a thermal body

  carrier (2) either in the form of aggregates or in compact mass, chosen for its qualities of thermal mass capacity and resistance to high temperatures (500 C for example)

  o *, - Resistors (3) are embedded in the mass of the calo-

  carrier (2) and allow it to be brought to the desired temperature.

  4o - The volume of this body is a function of the amount of heat to be stored. 4o - A second hermetic enclosure (4) surrounds the first, leaving between the enclosures (1) and (4) an empty air space (5)

  + o - Insulating spacers (6) keep the

  belt (1) in place inside the enclosure (4) and contribute to the resistance

  pressure at the vacuum air assembly.

  - The surfaces of the walls located inside the empty space

  air (5) are treated to reduce heat transmission by rayon-

  between the enclosure (1) and the enclosure (4).

  * - In the case of an enclosure (1) filled with a granular material

  metal parts (7) make it possible to thermally connect the

  king of the enclosure (1) and the interior of the grainy mass. On the outer wall of the enclosure (1) are fixed one or more metallic elements conducting heat such as (8). On the inner wall of the enclosure are fixed other similar metallic elements (9) located nearby

elements (8).

  4; - One or more moving parts (10) allow to bring together

  each pair of elements (8) and (9) to form thermal bridges.

  o; - The elements (8) (9) and (10) constituting the thermal bridges

  have the dimensions, shapes and contact surfaces appropriate to the quantity

  heat to transmit. They may, for example, have wavy (Fig. 2) chevron (Fig. 3) or ridged (Fig. 4) sections to increase their

contact surface.

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   2 - One or more control devices located outside the enclosure (4) allow the moving parts (10) to be actuated to establish

  or interrupt the junction of thermal bridges.

  <* - The control device as described in the text, but not limiting, is constituted by electromagnets (11) acting on

  plunger cores (12) connected to the moving parts (10) by a connecting rod

  mande (13) of which they are integral, either fixed or slightly movable relative to the rod (13) to allow their correct application on the

faces of elements (8) and (9).

  o; - The assembly described above is enclosed in another en-

  hermetic enclosure (14) arranged to constitute a second stage of

heat transfer.

  * o- This enclosure is filled with perfectly dry air or a fluid

adapted coolant.

  4. - An internal partition separates this enclosure into two parts.

  The partition (15) is open at its upper part and closed at its

  lower part by one or more movable valves (16). The enclosure

  its (15) is connected to the wall of the enclosure (4) by a set of grill

  the (17). The wall of the enclosure (14) has fins (18) In the space between the partition (15) and the enclosure (14) is located a

  heat exchanger (19) connected to the use circuit.

  Operation The electrical resistances (3) heat the heat transfer body (2) to bring it to the desired temperature; A thermostatic system (not

  described) will control this operation.

  Heat is transmitted by conductivity, either directly or

  through the parts (7) to the wall of the enclosure (1) and then to the elements

metal elements (8).

  A small part of the heat produced, will be transmitted to the enclosure

  (4) via the insulating spacers (6).

  When the electromagnets are de-energized, the moving parts (1 O) are at rest on their stop. The thermal bridges formed by

  parts (8) (9) and (10) are interrupted.

  When necessary, a thermostatic control (not described)

  energizes the electromagnet (s) (11). This attracts the plon core

  geur (12) connected by the rod (13) to the part (10) which is pressed against the

  parts (8) and (9) thus establishing as many thermal bridges between the

  belts (1) and (4) that there are activated electromagnets. The amount of heat

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  transmitted to the enclosure (4) will therefore be a function of the number of thermal bridges

  ques established, and their duration, which will be very easy to manage with pro-

known heating grammators.

  The heat transfer fluid contained in the enclosure (14) heats up in contact with the wall of the enclosure (4), the fins (18) and the grid (17) which

  serve as heat diffusers. The valves (16) are normally closed.

  by their own weight. The heat transfer fluid follows the path of the arrow (20), cools down in contact with the heat exchanger (19) and returns to the other side of the partition (15) by opening the valves (16), establishing a

true convection current.

Claims (4)

  1) Device for transferring and regulating the heat energy produced, more particularly, by an accumulation generator, the heat accumulator element of which is isolated from the outside by an empty air enclosure, characterized in that the the accumulator element (1) comprises metallic elements (8) which can be connected to other metallic elements   ques (9) fixed inside the wall of the outer enclosure (4) by parts   these mobiles (10) for making thermal bridges between the enclosures (1) and (4)   2) Device according to claim 1, wherein the moving parts   the (10) are connected, each or by group to a control rod (13)   secured to a magnetic mass (12) controlled from outside the enclosure   surrounded (4) by electromagnets (1 1) 3 Device according to (1) in which the parts constituting the thermal bridges have corrugated profiles (Fig. 2) in chevron (Fig. 3) or striated   (Fig. 4) to increase their contact surface.   4) Storage heat generator, equipped with safety devices   lon one of claims 1 to 3.