• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a hybrid heating system comprising - a primary circuit of a primary heat generator comprising hot water heat exchanger (10) and a heating circuit heat exchanger (14) heated at least in parallel with the primary heat - a heating circuit (22) with a LP2 (31), a choke (32), an evaporator (34) and a condenser (36a, 36b) and connected to utilize the exhaust air LTO in series with its evaporator (34) and to dissipate the secondary heat in series with its condenser (36a) as a whole in parallel with said primary heat exchanger 14 - an exhaust air LTO unit (20) comprising a plurality of exhaust air LTO elements (201, 202, 203) connected in series in which the medium circuits are connected in series and countercurrently to each other, thereby providing a repeated temperature rise of the medium and a repeated cooling of the exhaust air.
    公开号:FI20205127A1
    申请号:FI20205127
    申请日:2020-02-06
    公开日:2020-08-09
    发明作者:Antti Hartman
    申请人:Hoegforsgst Oy；
    IPC主号:
    专利说明:

    PRIMÄÄRILÄMMITYSTÄ Hybrid HEATING SYSTEM The invention relates to a district heating heat or hybrid heating system using the other primary heat from O primäärilämmöntuottajan primary circuit comprising at least parallel primäärilämmöllä warm water heat exchanger and a heating cycle of the heat exchanger, No heating circuit recycling the circulating water is controllably heated without tissue lutuskohteissa primäärilämmöllä through the heat exchanger, No heat pump unit, comprising a compressor, a choke, an evaporator and a condenser and connected to utilize a heat source selected by its evaporator and to dissipate the secondary heat in its condenser frankly alongside said primary heat exchanger, said heat source comprising at least an exhaust air heat exchanger and a cooling radiator.
    Often, a cold hot water heat exchanger is connected in series with the hot water heat exchanger and the heating circuit heat exchanger, whereby the return hot water circuit is connected between said upper and lower hot water heat exchangers. Especially in larger properties, it is advisable to use a heat pump in addition to district heating, which has, for example, ground heat or exhaust air as the heat source. As district heating supply contracts always include provisions for, for example, minimum cooling of district heating water, 3 this limits the utilization of the heat pump. x + 30 The Finnish Energy Industry Association has brought publications on the application of the exhaust air heat pump N (PILP) in a district heating house: Heat use working group S 30.10.2017; “Exhaust heat pump (PILP) for district heating; instructions for the N designer ”. The publication presents example connections (Hybrid 1 and Hybrid 2). The publication discloses heat control of a heat pump, optionally for heating hot water, if heat is left over after heating the heating circuit. Especially in summer, the building has a situation where there is no heat consumption, but there is a need for cooling. To this end, condensers are often installed on the roof of a building as a heat consumer for the heat pump so that it can produce refrigeration. Known as the so-called. RoofTop units, in which the supply air to the roof-mounted supply air unit can act as both a heat source for LTO purposes and a heat consumer for cooling purposes. It is not practical to connect such a unit to another system, because then the integration benefit of the unit is completely lost.
    The object of the present invention is to provide a new type of system to enable the production of cooling even when there is no actual heat consumption. The hybrid system according to the invention is characterized by what is stated in the claims.
    The significance of several thermodynamically connected heat pumps in series is that each of them operates with a low heat factor. Then their efficiency is excellent.
    There may be 2 to 6 heat pumps, most preferably 3 to 5. Exhaust air LTO devices are connected in series with 2 to 5, most preferably 3 to 4 & each. The total temperature difference on the evaporator side is 10 to 20 ° C, most preferably 12 to 16 ° C.
    oS x + 30 Set in series, they heat / cool the circulating water in succession, with a total effect of 40-95% of the sum of the temperature S differences caused by the separate condenser (s).
    Preferably, the fan of the exhaust air LTO unit is in the flow direction before the exhaust air LTO elements. It is advantageous to construct the exhaust air LTO elements and the fan as separate, integral units, whereby it is advantageous to install the fan as a separate component before the assembly formed by the exhaust air LTO elements. This makes it easy to remove both the exhaust air LTO elements and the fan from the exhaust air LTO unit and service or replace it with a new one.
    In the system according to the invention, primary heat can be produced in many ways - district heating is only one application. The electric boiler can also be mentioned as a typical primary heat producer.
    The invention will now be described with reference to the accompanying Figure 1, which shows a district connection of a hybrid system using district heating and utilizing exhaust air heat by means of a heat pump. and a cold hot water heat exchanger 12 connected in series with them, in which the return hot water circulation LVK is connected between said upper and lower hot water heat exchangers 12, 10. A conventional system includes a heating circuit 22 N with circulating water circulating in an adjustable manner via said district heating heater 14.
    8 r In Fig. 1, a first condenser 30 is indicated in the heat pump circuit 30 to utilize the amount of heat of the superheated medium. This utilization of N superheating is not essential to the present invention. OF
    The return flow of the auxiliary heating can be controlled in a controlled manner to the auxiliary heating KV of the cold water by means of a heat exchanger 18, which is in the hot water heating system in series with the actual hot water heat exchanger 12. The system includes three-way control valves, by means of which the basic heat of the heat pump from the heat exchanger 36a can be optimally controlled to the desired destination according to the heat consumption situation. Thus, if there is no consumption in the heating circuit, the heating produced by the heat pump can be directed to the hot water heating or vice versa.
    The so-called free-flow separator 24 is an optional component in which the charge input of the heating circuit from the heat exchanger 14, its discharge, the additional heating input from the condenser 36a and the additional heating discharge are connected to the same volume. With this flow component, the circulating flow of the charging circuit is not disturbed by the supply flow of the auxiliary heating, but this allows the volume flow substantially corresponding to the charging flow to be transferred from the inlet flow of the auxiliary heating.
    As is known per se, the heat pump circuit 30 comprises a compressor 31, a choke 32, an evaporator 34 and a condenser 36a connected to utilize an external heat source selected by its evaporator, here the exhaust air motor 20, and to dissipate heat by its evaporator 36a in parallel with said remote heat.
    S N Now the heat pump circuit comprises three heat pumps LP1, LP2 and LP © 3 ns. as a cascade connection. The condenser 36a of each heat pump LP1, LP2 and Lp3 7 is preferably connected to a so-called by robbery a 30 to circuit 362, with each heat pump raising the temperature of the circulating water N by only 3 to 4 ° C. A total of the required temperature rise is achieved with three heat pumps in succession. In the on-line connection, each heat pump operates at 3 - 4 ° C daT, but
    The dT of the system is flexible, e.g. 8 - 15 ° C depending on the situation. Respectively, the evaporators of the heat pumps LP1, LP2 and LP3 are connected by a robbery circuit to the circulating circuit 342, which supplies the cooled medium exhaust air to the LTO unit 20. It has three conventional exhaust air LTO units in series for both air circulation and liquid circulation. The medium flows connected in series are countercurrent.
    This so-called the robbery connection gives almost the same result in a stable situation as the evaporators / condensers connected in series. However, the advantages are obvious in the context of various transient phenomena, ie disturbance and change events to which the operation of the system easily adapts. In robbery, the flow of the sub-circuit is preferably 90% of the main flow, generally 60-100% of the main flow. The fan 208 and the filter 209 of the exhaust air LTO unit 20 are in the flow direction before the exhaust air LTO elements 201, 202,
    203. The exhaust air LTO elements 201, 202, 203 are preferably formed as a unitary unit, whereby both the exhaust air LTO elements 201, 202, 203 and the fan 208 and the filter 209 can be easily removed from the exhaust air LTO unit 20 and serviced or replace with new as needed. OF O OF
    N <Q © O
    I Jami a PP OF LO O OF O OF
    权利要求:
    Claims (6)
    [1]
    A hybrid heating system comprising o a primary circuit of a primary heat generator comprising at least parallel = primary heat heating a domestic hot water heat exchanger (10) and a heating circuit heat exchanger (14) and preferably a cold domestic hot water heat exchanger (12) connected in series therewith, connected between the upper and lower heat exchangers (12, 10) of said hot water, o a heating circuit (22) with adjustable circulation of circulating water at consumption points through said heat exchanger (14) heated by primary heat, 5 cascaded heat pump units (LP1), 31), a choke (32), an evaporator (34) and a condenser (36a, 36b) and connected in series to utilize the exhaust air LTO (20) in its evaporator (34) and to dissipate the secondary heat in series in its condenser (36a) as a whole in parallel with said primary heat (14). in parallel with said heat source k comprises at least an exhaust air heat exchanger (20), characterized in that the exhaust heat LTO unit (20) consists of a plurality of exhaust heat LTO elements (201, 202, N 203) connected in series, in which the medium circuits on both sides are connected in series. and countercurrently connected, thereby providing a repeated temperature rise of the medium and a recurrent cooling of the exhaust air, and that the exhaust air LTO devices are connected in series with 2 to 5, most preferably 3 to 4 units.
    LO
    S N A hybrid heating system according to claim 1, characterized in that the cascade heat pump units (LP1,
    LP
    [2]
    2, IP 3) on at least one side (evaporator or condenser side) connected to the so-called circulation circuit. ryöstökytkennällä that is provided with an evaporator / condenser pump to circulate the medium in the common line;
    [3]
    Hybrid heating system according to Claim 1 or 2, characterized in that there are 2 to 6, most preferably 3 to 5, heat pumps.
    [4]
    Hybrid heating system according to one of Claims 1 to 3, characterized in that the fan (208) of the exhaust air LTO unit (20) is in the flow direction before the exhaust air LTO elements (201, 202, 203).
    [5]
    Hybrid heating system according to one of Claims 1 to 4, characterized in that the total temperature difference on the evaporator side is from 10 to 20 ° C, most preferably from 12 to 16 ° C.
    [6]
    Hybrid heating system according to one of Claims 1 to 5, characterized in that, when arranged in series, the circulating water is heated in succession with a total effect of 40 to 95% of the sum of the temperature differences produced by the individual condenser / evaporators.
    OF
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    同族专利:
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    引用文献:
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    LT5778B|2010-02-24|2011-10-25|GenadijPavlovskij|Centralized heat and hot water supply system|
    KR101175516B1|2010-05-28|2012-08-23|엘지전자 주식회사|Hot water supply device associated with heat pump|
    CN102384676B|2011-10-31|2013-05-29|陆加孚|Efficient air heat exchanger|CN112944445A|2021-04-15|2021-06-11|晟源高科科技有限公司|Series-parallel combination compression type heat pump heating system and switching method thereof|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FI20195091A|FI129146B|2019-02-08|2019-02-08|Hybrid heating system using primary heating|
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