DD210962A1 - CIRCUIT ARRANGEMENT FOR A DECENTRALIZED SMALL WATER PUMP SYSTEM FOR THE OBTAINING OF MOLECULAR CURRENT TREATMENT - Google Patents

Abstract

The invention relates to a circuit arrangement for a decentralized small heat pump system without switching the refrigerant circuit for heat recovery in Vielraumgebaeuden. The goal d. Invention is a performance minimization of the system by heat balance between areas of action of different thermal stress. The inventive solution is that d. When condenser operating condenser heat with a temperature level corresponding to the heating demand of the transition operation is introduced into a heat transfer network, transported to the heating zone and the air heaters air conditioning units supplied to Luftterwaermung. In prevailing Kaelsbedarf the excess condenser heat is discharged by means of an Abwaermanlage to the environment and at prevailing heating demand, the heat deficit is compensated by an additional heating.

Description

Inventor: Feiist, Friedrich Int. 01. F 2 £ B, 29/00

Faulmanh »Rainer

Zustellungsbevollmächtigt:

Mechanical and Apparatus Engineering Schkeuditz Abt. BfN / Patentwesen

7144 Schkeuditz Kurt-Beyer-Straße 10-12

Title of the

Circuit arrangement for a decentralized small heat pump system for heat recovery in multi-room buildings

Field of application of the invention:

The invention relates to a circuit arrangement for heat recovery in multi-room buildings by heat balance at different thermal load of the areas of action as a decentralized small heat pump system, without Umscnaltung the cold circle.

Characteristic of the known technical solutions:

Pie heat balance of modern buildings is usually balanced during a greater part of the year. However, depending on their orientation, the individual facades are subject to different external stresses over time, so that at the same time a heating and cooling requirement can occur in the case of opposite effective ranges or due to different internal loads.

The condition of the individual areas of action is individually achieved with the aid of ventilation systems. * While in rooms with cooling demand, the surplus heat is released unused to the environment, at the same time, or with less time delay, a heat supply for rooms with heating demand.

The goal is to create a thermal equilibrium within a building taking into account the individual areas of effect, d. H. To bring the released heat from the cooling zone to the heating zone, has been achieved by using a lileinwärmepumpensysteras with umscnaltbarem refrigeration circuit (small heat pump system Versatenip) ·

As a part of this system proves that only special small heat pump units can be used and that even with additional. Heat demand, provided by a conventional heating system, a ülektroenergieverbrauch the compressor occurs. The switching of the refrigeration circuit is associated with power losses and requires compared to conventional compact air conditioners additional equipment and a higher development and manufacturing costs,

The conventional compact air conditioning units produced in large numbers without switching the refrigeration circuit are operated without thermal links.

Object of the invention

The aim of the invention is to minimize the performance of the plant system by establishing a balance between zones of different thermal loads in such a way that the undesirable vVärmmererige in areas of effect is transported to areas of activity in which there is a heat requirement.

lii'esen eggs invention

The goal of the invention is to develop a circuit arrangement which, with the aid of conventional compact air conditioning units for areas of effect of different thermal loads, creates an economic utilization of the refrigerating incapacitor as a heat source by compensating heat transport between the areas of action.

According to the invention the object is achieved in that the resulting during cooling operation condenser heat with a temperature level corresponding to the heating demand of the transitional operation, introduced into the heat carrier network, transported to the ileizzone and there the air heaters of the air conditioning units for air heating is supplied.

The evaporator of the working exclusively in cooling refrigeration cycle of the compact air conditioning units is arranged for air cooling directly in the air circuit. The energetic coupling of the individual devices is carried out by a closed heat transfer circuit, which can be designed as uninsulated 2-Hohr system · condenser of the refrigerant circuit and air cooler are connected to the heat carrier network, that with the help of intermediate btellventilen according to the heating or Kiihlbedarfs the air heating or cooling can be regulated.

While with complete compensation of the heat and cold balance oystem no heat must be added or removed, takes place at prevailing heating demand, a heat supply by including a tfärmeerzeugungsanlage and prevailing refrigeration demand heat removal by means of a waste heat.

The inclusion of a "ipeichers thermal energy in the heat transfer circuit makes it possible to compensate ι Wärmelast- s c 11 wankungen au and thus achieve economic operation of the plant system.

In the case of an exclusive heating demand, the complete supply of heat is effected by the heat generation plant. With an increased need for heating with decreasing Außenluftteraperatur the temperature level of i // dreältägerto? Silauf is raised, whereby more economical design conditions of the heat exchanger for air heating can be achieved.

.During heat pump operation, the control of the heating and cooling requirement takes place in accordance with the temperature difference between the supply and return of the heat transfer medium. In case of heating, the supply air temperature is adjusted depending on the outside air temperature.

Exportation

The üirfindung will be explained in more detail using an exemplary embodiment

 In the drawings show;

.u'ig. 1ϊ a circuit arrangement of the decentralized Kleinv / märmepumpenöystems with Kluheruhen direct cooling without switching the cooling circuit

Ii ¹ i. 2i is a functional diagram of a small heat pump device

i ' ^! ig. 3: the daytime course of a cheerful July day oriented action areas

j'ig. 4; the power requirements of the conventional and the vvariaepumpenschaltung and the influence of a memory for thermal energy

        , «3 * - '..; .-. -. .

The air-conditioning rests 1, which are used to ensure given clearance ventilation parameters, are assigned to the individual areas of effect of an oriented multi-room building and fulfill the heating and cooling climate function.

They have the heaters suitable for the treatment and production of air. 13j Kiihiär 14 * Filters and fans · The cooler 14 works as an evaporator of the integrated kite circuit with the compressor 15 and the iäxpan sieve valve 17 ·

To create the thermal balance between the Wirtoingsbereichen the Klimatruhen 1 by a 'closed heat transfer circuit run 6, which is designed as an uninsulated two-pipe system due to the prevailing temperature levels coupled. A circulating pump 5 serves to convey the heat transfer medium.

The compensation of a temporary Unter¬ or oversupply of heating energy by daily load fluctuations of the transmission or internal heat load is carried out with the aid of a öpeiphers for thermal Qaergie 4, With predominant cooling demand, the excess condenser heat is dissipated. The cooling power is increased by adiabatic supersaturation of the cooling air and wetting of the heat exchanger with water.

The supply of heating energy in the system with predominant heat demand is carried out by an additional heater 3, which is designed as a conventional heating system. The regulation of the heat carrier for incorporation of the required ranges of effect and functional units is made possible by means of valves 11, 9, 10, 11, 12, which are coupled to a controller 7.

The climate design in the respective area of effect is carried out individually with the aid of a bubble temperature controller 18. For this purpose, the heater 13 and cooler 14 are arranged in the air circuit.

If there is heating demand, the two-way valve 12 of the heat pump device is in the passage position and the heater 13 is traversed by the heat transfer medium. Heater 13 and capacitor 16 are connected in series (see Fig, 2), if the air must be dehumidified and reheated to ensure temperature and humidity in the area of action. In the case of pure temperature control, the parallel connection, which has a lower pressure loss, is to be used ·

Lieg * no heat or cooling demand before, the valve 12 is in corner position and the heat transfer medium flows through unused the capacitor 16. When cooling the refrigerant circuit goes into operation, so that the condenser heat is absorbed by the heat exchanger and fed to the system return ·

In the function of the interface circuit several Betriebsfä ^ le are to be distinguished. The driving style is given in the table below.

table

Often the decentralized small heat pump system with klimatruhen direct cooling

Ä - Valve in DuröJigängsstelluiig B - Valve in: ßc position

Operating cases .. Use condition Valve position x) V ₂ O) V ₃ (IO) V ₄ (H) Timely demand for heat and cold * WV ^{= 17} ViS Vij (B) A A A Complete balancing of the heat and cold balance B B B A A A B Predominant cooling requires charge of the storage tank Discharge of the condensate heat B. A A A B B B A Predominant heat requires charging of the 3-store conventional heat supply ^Ü WV ^ - ¹¹ WR * w = ^f w B A A B A Exclusive heat needs A

In ideal operation, the building has thermal equilibrium, d, h. it consumes as much energy from the heat sources (heaters) as is provided by the heat sources (condenser). Characteristic of this are the same flow and return temperatures ( )

Predominant cooling demand is expressed by positive deviation of the return flow temperature from the flow temperature

With the excess capacitor heat of the layer memory 4 is charged. The further heat supply is to be dissipated to the environment with the aid of the waste heat installation 2. According to the prevailing heat requirement, first the heat storage 4 is discharged. The further fulfillment of requirements requires an additional heating by inclusion of a / i / erzerzeugungsanlage (t _w > -

The rfärmepumpensehaltung is based on the priority of cooling · With exclusive heating demand the complete heat supply by the producer · It is more economical to the heating required temperature level directly through the conventional heating, without the interposition of the heat pump, as in Versatempsystem provide ·

With the exclusive heat supply by the heat generator, it is possible to increase the flow temperature, in accordance with the increased need for heating, with decreasing outdoor air temperature · This achieves economic design conditions of the heat exchanger for air heating ·

The air heaters are dimensioned for the partial power and the temperature level during the transitional operation. Purely higher heat outputs in the winter design case, an external luffbemperaturabhängige control of the flow temperature.

When using this decentralized small heat pump system a significant Snergieeinsparung and thus a saving in operating costs is achieved because compared to the conventional system with separate heating and Kühllsreislauf only the difference of the simultaneously required heating and cooling demand is to provide.

Temporal shifts in energy supply and demand can be compensated by heat storage · The closed heat transfer circuit avoids corrosion, incrustation and biological contamination, thus achieving high punctual safety and reliability ·

When using small-scale refrigerators without switching the refrigeration cycle, their simpler function and the omission of special equipment have an advantageous effect on the operating behavior.

The invention achieves the following technical and economic advantages;

- Saving energy

- Increasing point ion safety and service life

- saving of cooling water

- Reduction of maintenance costs

Claims (5)

jiirf in saying spell 1. Circuit arrangement for a decentralized Kleinwärmei pumping system, preferably for multi-room buildings with; (different facade orientation or I ίKirkungsbereiche different thermal stress I , characterized characterized, I [that the compact air conditioning units (1) without switching the ) ί cold cycle it as air cooler (14) and air J ίheizer (13) are used, the Warmeeri; generator and heat consumer in such a way via a broth-line system (6) with a waste heat plant (2) and i ίeiner additional heating (3) with interposition } a! Circulation pump (5) are connected, that at the; Cooling operation resulting condenser heat with a j ; (Teraperaturniveau that the heating requirements of the (Jbergangsbe-; impulse corresponding passes in the heat transfer network turned-ί \, 'to the heating zone transported and fully: ί constant balancing of the heating and cooling balance the' air heaters (13) of the air conditioning units ( 1) for fan I-heating is supplied, while the predominant ι refrigeration demand the excess condenser heat over; leave the waste heat system (2) to the surroundings and at prevailing heating demand the heat deficit 'by; the auxiliary heater (3) is borrowed. 2 »circuit arrangement according to i ^; 1, characterized in that the heat transfer medium flows through the air purifier (13) via a two-way valve (12) or through the condenser (16) of the compact air conditioner (1) in the case of cooling 16) when the temperature is warranted and the reed switch is used to ensure temperature and humidity » 3 · Circuit arrangement according to item 1 and 2, g e k e η η records dad u r c h that by incorporating the thermal energy storage (4) in the heat transfer medium thermal balance is compensated for deviating vVärme- and cooling balance. 4. Circuit arrangement according to items 1 to 3 »characterized by the fact that with exclusive heat demand, the temperature level of the heat transfer medium is raised. 5 x Circuit arrangement according to Point 1 to 4, gefcenn * - is characterized in 'that the discharge of the condenser heat to the environment by air cooling of the heat carrier in a closed circuit by means of waste heat system (2) is carried out such that the cooling air (before entering the heat exchanger of the waste heat system 2) is supersaturated adiabatically · - 3 sheets of drawings -