DD266159A1 - ARRANGEMENT FOR THE REGULATION OF THE WATER YEAR AND TRADE CONTRACT IN DYNAMIC LATENT STORES - Google Patents

Abstract

The invention relates to an arrangement for regulating the Waermeein- and Waermeaustrages dynamic latent heat storage, working with heat transfer agents in direct contact with the phase change material for heat and heat transfer. The invention has for its object to realize the selbsttaetige regulation of Waermeein- and heat transfer in dynamic latent heat storage with a circulation pump. According to the invention, the object is achieved by circulating the heating medium in both circuits with the aid of the circulation pump. Essential to the invention here is that the heat source, circulating pump, latent heat storage and consumers are connected in series and the two heat transfer are arranged in parallel branches between the three-way valve and three-way control valve.

Description

For this 2 pages drawings

Field of application of the invention

Cio invention is related to dio regulation of Wärmeoein- and Wärmeaustrags with dynamic latent heat storage, dio with heat transfer agents in direct contact with the phase change Jlmaterial work for heat input and heat output.

Charaktfirlitlk de »known prior art There are known solutions in which for the temporal decoupling of heat generation and heat consumption memory

For this purpose, the Wärrneoin- and Wärmeaustrag via separate circuit »,., obel in both one,

Circulation pump is arranged, is regulated by dereti on or off dur Heat Einein or Wärmeaustrag. Examples

for that are

DE3040370A1

DE3107240A1

DE3i1501. "A1

In these circuits, the heat source (eg Sonnon collectors, boilers ...) is in the heat entry Kroislauf

different reasons (no sunlight, interruption of Heiz'botriobes ...) no longer effective, so that the

If the temperature of the heating medium drops, then the circulation pump in the heat input circuit, such as, for example, is heated. in DE 3215012A1

a chill that responds to the sun's heat. The pump in the heat-removal circuit is operated as needed, e.g.

via timer, continue to operate.

There are also known solutions in which de 'storage use with only one circulation pump in common Cycle for heat input and output realizes v / ird. Examples are DE 3111888 and 2768727 C2. In DE 3111 ^{n (} <3

Storage and heat consumers are connected in parallel. Dar discharging and loading the memory at the same time

Heat supply to the consumer requires the arrangement of the circulation pump immediately in front of or behind the storage,

wherein the flow direction is insignificant, or it is, as in DE 3111888, between consumer and branch to

Heat source or to Spoicher. To unload the memory can in both cases by appropriate adjustment on Orelwegeventil the Teilkreislau f over the Heat source to be locked so that the heat supply to the consumer by Speicheientladung only on the Partial circuit, which is formed by parallel connection of Spoicher and heat consumers, takes place. The storage load is by the requirement that at the same time the consumer should be supplied with heat,

Delayed or in DE 3111888 at all gestallt in question, since either the heated by the heat source Heirmediiim mixed with the return of the consumer and thus cooled odor or as in DE 3111888 Hoizmodium from dom huJ'.lauf des

Consumer is fed directly into the store for loading. The operations of loading and unloading the memory are timed by the necessary readjustment of the three-way valve

separated from each other. Determining the exact time of valve re-injection is an appropriate control requirement "

Should be dispensed with dio control and the setting dos Dreiwcgeventils when unloading equal to the setting To be a shop, when unloading either a partial flow of the heated heating medium via dioussor operation gesotzto Heat source flow (heat losses I) and without supplying a consumer mixed with the return of the consumer

get back into the memory, or as in DE 3111888 a partial flow of the heating medium from the consumer return flow through the Botaniob set heat source and the flow for the consumer be mixed (unnecessary

Setback). The functionality of this circuit is evident by the absence of a controller

impaired, ii: DE 2758727C2 heat source, heat accumulator, heat consumer and circulating pump are connected in series. In the case of the Ausspeicherns a short-circuit path, which bridges the heat source is provided.

The transmission of the above-mentioned Scnaltungsvarianten with only one circulation pump to the ever increasing extent

assertive dynamic latent heat storage, each with a heat exchanger for the heat input and heat dissipation brings the following problems:

For the integration of the memory is in these Schaitunge. > only one connection pair is available for each heat exchanger,

so that either only the heat input or only dor Warmoaustrag is possible. In this vVeiso is the combination

Heat source storage heat consumer not fully functional. To both processes memory discharge and loading of the store while supplying heat to the consumption? '6, to realize it would be necessary again to resort to two separate circuits for heat input and heat output, each with a circulation pump, which indicates a significant additional expenditure by the additional pump.

Object of the invention

The object of the invention is to reduce the circulation pumps required for dynamic loading and unloading of dynamic storage tanks to a single pump only. At the same time dor necessary effort for controlling and controlling the pump depending on the state of charge of the memory has been reduced in known solutions.

Explanation dns essence of the invention

The invention is based on the task of realizing the automatic regulation of the heat input and heat discharge in dynamic heat exchangers with a circulating pump. Erfindungsgomäß the task is solved by an arrangement in which heat source, circulating pump, Latontwärmespoichor and consumers are connected in series. The beidon heat exchangers are arranged in parallel Zwoigon between three-way valve and Droiwegeregelventil. F.rfindungswesentlich ': here is that according to the temperature regulation of heat input and -austrage automatically ri ~ 3t.

It is also essential to the invention that the heating medium is circulated in both circuits (heat input and output) with the aid of the pump.

Ausführungsbelsplel

Dio invention will be explained in more detail by two examples. Show in it

Fig. 1: Funktior & principle of the arrangement Fig.2: detail

Basis for the application of the arrangement are closed latent heat storage nobon the memory material at least one eich with this non-premixing heat transfer medium for heat transfer. This heat transfer medium is present in two phases: liquid in the region d'ts Wärmoeintrags (lower heat exchanger 4 b) and gaseous in the region of the heat output (upper heat exchanger 4 a). When heat is applied in the lower heat exchanger 4b, the heat transfer medium begins to boil. The ascending steam rush condense on the crystals of the storage material, with heat being given to the same. After reaching the melting temperature of the storage material, the melting process begins (heat of fusion stored latent heat). When heat extraction in the upper heat exchanger 4 a decreases with the temperature dor pressure in Behalte r, so that the condensed at the upper heat exchanger 4 a heat transfer medium begins to boil again. In this case, heat is removed from the molten storage material.

Example 1:

Heat source 1 (e.g., coal boiler), circulation pump 2, latent heat storage 4, and consumer 6 are connected in series, with the two heat exchangers of the latent heat storage being arranged in parallel (Figure 1). By a between the pump 2 and latent heat storage 4 arranged three-way valve 3 is dor simple circuit in two p <; rllel switched branches split, which reunite behind the latent heat storage 4 again. (Instead of a three-way valve, individual valves can be used.)

This junction allows the connection of both heat exchanger 4 a, 4 b of the latent heat accumulator 4. About the upper heat exchanger 4 a heat discharge and the lower heat exchanger 4 · ^Λ the heat input realized immediately behind the union of the two branches for the connection dor heat exchanger for Wärmeein · and Wärmoaustrag 4 a, 4 b is a Kurzschlußstrocke arranged to bridge the heat consumer network including consumers 6 in case of need. An dor branching is preferably a three-way valve 5. Dio room temperature is measured by means of sensor 7

 With the help of the three-way valve 3 between circulation pump 2 and latent heat storage 4 wiM set the system to a specific heat load case.

t | - VmIn

This can be done daily, with large Außenlufttempornturschwankungcn several times a * \ days. For the Vontileinstellung applies: I'3 higher the Heizlastfall, the greater the mass flow through the upper heat exchanger 4a (heat discharge) or to se smaller the mass flow through don lower heat exchanger 4 b (Wärmeointrag).

At extremely low outside air temperatures or those that can no longer be coped with heat supply by memory discharge, it is possible to lock the branch for the Wärmaeintrog 4 b, so that the entire heating medium with the temperature generated by the heat source 1 , flows over the branch for the heat emission 4a to the consumer 6. An additional bypass the latent heat storage 4 for direct heating operation is therefore not required. Will d ^! In accordance with the setting on the three-way valve 3, part of the heated heating medium flows via the lower wye exchanger 4b (heat input) and the other part via the upper heat exchanger carrier 4 a i heat discharge) , without

from the storage heat to the heated heating medium is discharged or umgokehrt from the heating medium heat can be given to the memory (heat diode).

After emerging from the two heat exchangers 4 a, 4 b of the latent heat accumulator 4, the two partial streams of the

in the lower heat exchanger 4b (WSrmeeintrag) cooled by about 1OK and the upper heat exchanger 4a (heat rejection) unchanged by continuous heating medium.

The mixing time of the now flowing in the direction of consumer 3 heating medium is according to the setting of Three-way valve 3 between the temperature of the heating medium to the heat source 1 of the lower in the heat exchanger 4 b

cooled heating medium,

Example 2: Heat source 1, circulating pump 2, latent heat storage 4 and consumers β are connected in series as in Boise 1. in the In contrast to example 1, the latent heat store 4 is designed in a modular book (multi-body memory) (see FIG. 2). The Number of completely closed storage container modules 9 can be varied. The surface of the storage container modules 9 above the Spelchr. material-filled ^ ndos 8 corresponds to the obornn Heat exchanger 4e in Example 1 and serves the heat removal. The surface of the Speicherbehhlterbausteine 9 below the memory material level 8 corresponds to the lower Heat exchanger 4b in Example 1 and serves the heat input. Approximately equal to the memory material level 8, a partition wall is arranged horizontally so that they don Storage volume container 10 divides into two chambers; an upper for the donation and a lower one for the heat input. Analog Ex. 1 here are the Zwoige for don Wiirmooin- and Wärmoaustrag parallel gorchallot. The principle of operation corresponds to dom of B '^;'piol 1.

Claims (2)

1. Arrangement for regulating the heat input and heat output in dynamic latent heat storage with separate heat exchangers for the heat input and Wärmoaustrag for a heat transfer medium, characterized in that the heat source (1), circulating pump (2), latent heat storage (4) and consumers (6) Series are connected and the two heat exchangers (4a, 4b) of the latent heat accumulator (4) in parallel branches between three-way valve (3) and three-way control valve (5) are arranged. 2. Arrangement according to claim 1, characterized in that the regulation of the heat input and heat discharge takes place automatically according to the temperature of the heat transfer medium.