ES2424915A1 - Combined heat production system by means of heat pump and boiler with storage tank (Machine-translation by Google Translate, not legally binding) - Google Patents

Combined heat production system by means of heat pump and boiler with storage tank (Machine-translation by Google Translate, not legally binding) Download PDF

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Publication number
ES2424915A1
ES2424915A1 ES201200449A ES201200449A ES2424915A1 ES 2424915 A1 ES2424915 A1 ES 2424915A1 ES 201200449 A ES201200449 A ES 201200449A ES 201200449 A ES201200449 A ES 201200449A ES 2424915 A1 ES2424915 A1 ES 2424915A1
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water
application
boiler
heat
accumulator
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ES2424915B1 (en
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Javier MAESTRE BENÍTEZ
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H4/00—Fluid heaters characterised by the use of heat pumps
    • F24H4/02—Water heaters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Abstract

Heat production system applicable to the heating of process water or sanitary hot water that combines a heat pump (7) with a fossil fuel boiler (3). Each of the heating systems has a heat accumulator, so that the water to be heated first reaches the accumulator (5) of the heat pump circuit (7), to later circulate to the accumulator (6) of the boiler (3). In order to reduce the expense in the generation of hot water, the system presents means to evaluate the ambient temperature, the temperature of the water contained in the first accumulator (5) and the cost of electric power at a given time, and in function of the existing values, either starts the heat pump circuit (7), or heats the water only in the boiler (3). (Machine-translation by Google Translate, not legally binding)

Description

Sistema de producción de calor combinado mediante bomba de calor y caldera con depósito acumulador. Combined heat production system by heat pump and boiler with accumulator tank.

Sector de la técnica al que se refiere la invención Sector of the technique to which the invention relates

El sector de la técnica de la presente invención es el de la generación de calor en aquellas instalaciones tanto del sector industrial como terciario o residencial donde exista una demanda regular del mismo que pueda ser cubierto total o parcialmente empleando agua caliente como fluido caloportador. The sector of the technique of the present invention is that of heat generation in those facilities of both the industrial and tertiary or residential sector where there is a regular demand thereof that can be covered totally or partially using hot water as a heat transfer fluid.

Estado de la técnica anterior a la presentación de dicha invención State of the art prior to the presentation of said invention

Actualmente y desde hace años puede encontrarse en el mercado dispositivos de generación de calor del tipo calderas por un lado, que emplean combustible fósil (gasoil, gases licuados del petróleo, gas natural, por citar algunos) y bomba de calor, por otro, que usan electricidad, pudiendo producir esta última tanto calor como frío. Igualmente dichas tecnologías que ya se encuentran en estado de madurez vienen incorporando acumuladores de fluido térmico como accesorios allí donde se instalan, habitualmente provistos de agua en estado líquido en su interior, cuando se prefiere acumular la energía generada durante algún tiempo para entregarla posteriormente al consumo. Currently and for years, boiler-type heat generation devices can be found on the market, using fossil fuel (diesel, liquefied petroleum gases, natural gas, to name a few) and heat pump, on the other, which they use electricity, and the latter can produce both heat and cold. Likewise, said technologies that are already in a state of maturity have been incorporating thermal fluid accumulators as accessories where they are installed, usually provided with water in a liquid state inside, when it is preferred to accumulate the energy generated for some time to deliver it later to consumption .

También desde hace algún tiempo se puede encontrar sistemas mixtos de producción de calor donde se combinan energías renovables a las tecnologías mencionadas, como la energía solar térmica, aportando una parte de la energía total demandada. Also for some time you can find mixed systems of heat production where renewable energies are combined with the mentioned technologies, such as solar thermal energy, contributing a part of the total energy demanded.

Sin embargo, por parte del inventor se desconoce la existencia de un sistema como el aquí presentado que combine bomba de calor con caldera para producción de agua caliente, sea o no agua de consumo, según un esquema de conexión del fluido a calentar en serie y por ese orden, con un depósito de acumulación para cada una de las tecnologías, y produciendo energía útil con la bomba de calor solamente en aquellos momentos en que su funcionamiento es óptimo. However, the existence of a system such as the one presented here that combines heat pump with boiler for production of hot water, whether or not drinking water, is unknown, according to a scheme of connection of the fluid to be heated in series and in that order, with an accumulation tank for each of the technologies, and producing useful energy with the heat pump only at those times when its operation is optimal.

Explicación de la invención Explanation of the invention.

El objeto de la invención es generar calor mediante un sistema de producción en serie que combina una bomba de calor, conectando térmicamente su condensador al serpentín, no limitativo a otros sistemas de intercambio térmico, como lo es un sistema de intercambiador de calor de placas, de un depósito acumulador con agua en su interior, de un volumen igual o cercano al volumen de agua consumido en un día, de forma que el fluido refrigerante de la bomba entregará calor al agua haciendo subir su temperatura. El agua de este primer acumulador abandonará éste desde su parte superior y circulará hacia un segundo, entrando por su parte inferior, donde estará conectada térmicamente una caldera de combustible fósil y aumentará la temperatura del segundo acumulador hasta el valor deseado de consumo. The object of the invention is to generate heat by means of a series production system that combines a heat pump, thermally connecting its condenser to the coil, not limiting to other thermal exchange systems, such as a plate heat exchanger system, of an accumulator tank with water inside, of a volume equal or close to the volume of water consumed in a day, so that the cooling fluid of the pump will deliver heat to the water by raising its temperature. The water of this first accumulator will leave it from its upper part and will circulate towards a second, entering through its lower part, where a fossil fuel boiler will be thermally connected and will increase the temperature of the second accumulator to the desired consumption value.

La novedad aportada es que la bomba de calor solo funcionará en aquellas horas del día en que los factores que afectan a su rendimiento y precio de la energía útil producida, como los son la temperatura exterior ambiente, el coste de la electricidad y la temperatura del agua en el interior del primer acumulador, coincidan en un estado de funcionamiento de la bomba de calor óptimo. Con el sistema expuesto, a pesar de que el consumo de calor sea bajo The novelty contributed is that the heat pump will only work in those hours of the day when the factors that affect its performance and price of the useful energy produced, such as the ambient outside temperature, the cost of electricity and the temperature of the water inside the first accumulator, coincide in a state of operation of the optimum heat pump. With the system exposed, even though the heat consumption is low

o nulo, la bomba de calor podrá producir energía en los periodos óptimos de producción, que podrá ser almacenado y entregado posteriormente al consumo. or null, the heat pump can produce energy in the optimal production periods, which can be stored and delivered after consumption.

Por otro lado, cuando la bomba no se encuentre en su estado de funcionamiento óptimo, ésta permanecerá sin funcionar, Toda el agua precalentada por la bomba de calor circulará hacia el segundo acumulador, donde la caldera de combustible fósil, cuyo rendimiento es menos sensible a factores externos aportará el calor restante. On the other hand, when the pump is not in its optimal operating state, it will remain unworked. All water preheated by the heat pump will circulate to the second accumulator, where the fossil fuel boiler, whose performance is less sensitive to External factors will provide the remaining heat.

Así, la temperatura del primer acumulador se irá reduciendo progresivamente conforme se va produciendo circulación de agua de consumo, para permitir el funcionamiento de la bomba de calor de nuevo de forma cíclica cuando se den de nuevo las condiciones de funcionamiento adecuadas. Thus, the temperature of the first accumulator will be gradually reduced as the flow of drinking water occurs, to allow the heat pump to run again cyclically when the proper operating conditions occur again.

De esta forma, el precio de la energía generada por la bomba de calor será menor que el precio de la energía obtenida en la caldera de combustible fósil, reduciendo el precio global de generación de calor de la instalación respecto a un sistema que solo utilice una de ambas tecnologías. In this way, the price of the energy generated by the heat pump will be lower than the price of the energy obtained in the fossil fuel boiler, reducing the overall price of heat generation of the installation with respect to a system that only uses a of both technologies.

Breve descripción de los dibujos Brief description of the drawings

Figura 1.- Muestra un esquema de principio de los elementos que componen el sistema. El agua que entra y sale de los acumuladores puede ser tanto en circuito abierto, del tipo agua caliente sanitaria, como cerrado. Figure 1.- Shows a scheme of principle of the elements that make up the system. The water entering and leaving the accumulators can be both open circuit, sanitary hot water, and closed.

Exposición detallada de, al menos, un modo de realización de la invención Detailed statement of at least one embodiment of the invention

A la vista de la figura comentada, puede observarse como el sistema se compone de dos elementos generadores de calor, la bomba de calor 7 y la caldera 3. La bomba de calor está compuesta por el compresor 9, el condensador sumergido en el acumulador 5 a través del serpentín 11, la válvula de expansión 8, y el evaporador 10, el cual In view of the commented figure, it can be seen how the system consists of two heat generating elements, the heat pump 7 and the boiler 3. The heat pump is composed of the compressor 9, the condenser submerged in the accumulator 5 through the coil 11, the expansion valve 8, and the evaporator 10, which

5 captará calor ambiental, gratuito, para introducirlo en el acumulador a través del fluido refrigerante que circula por el interior de la bomba de calor que no llega a entrar en contacto con el agua de consumo. La caldera precisa de la bomba 4 para poder transferir calor al acumulador 6 a través del serpentín de intercambio 12. 5 will capture ambient heat, free of charge, to introduce it into the accumulator through the cooling fluid that circulates inside the heat pump that does not come into contact with the drinking water. The boiler requires the pump 4 to transfer heat to the accumulator 6 through the exchange coil 12.

El funcionamiento de la bomba de calor se determinará según el precio de la electricidad, y los valores medidos en la sonda 13 que mide la temperatura del agua en el primer acumulador y de la sonda que mide la temperatura The operation of the heat pump will be determined according to the price of the electricity, and the values measured in the probe 13 that measures the temperature of the water in the first accumulator and of the probe that measures the temperature

10 exterior ambiente 14. 10 outdoor environment 14.

El agua de consumo o proceso, entrará en el primer acumulador por 1 para abandonar el sistema por 2, donde abandona el segundo acumulador. The drinking or process water will enter the first accumulator for 1 to leave the system for 2, where it leaves the second accumulator.

Indicación de la manera en que la invención es susceptible de aplicación industrial Indication of the way in which the invention is capable of industrial application

La manera en que dicha invención es susceptible de aplicación industrial es, en aquellas instalaciones donde ya The way in which said invention is capable of industrial application is, in those installations where already

15 exista una caldera de combustible fósil, que es el caso más habitual, aportar el resto del sistema para llegar a la solución expuesta, con un coste total de generación de energía térmica más reducido. 15 there is a fossil fuel boiler, which is the most common case, providing the rest of the system to reach the exposed solution, with a lower total cost of thermal energy generation.

Claims (4)

REIVINDICACIONES 1. Sistema de producción de calor combinado mediante bomba de calor y caldera con depósito acumulador caracterizado, porque comprende al menos dos dispositivos generadores de energía, al menos una bomba de calor 1. Combined heat production system by heat pump and boiler with accumulator tank characterized, because it comprises at least two energy generating devices, at least one heat pump (7) y al menos una caldera de combustible fósil (3), aportando calor cada generador respectivamente a los (7) and at least one fossil fuel boiler (3), each generator providing heat respectively to the 5 acumuladores (5) y (6), conectados mediante serpentines (11) y (12) respectivamente o intercambiadores de calor de placas, circulando el agua de proceso o consumo a través de los acumuladores, precalentando el agua la bomba de calor en el primer acumulador, aportando la caldera el calor restante para llegar a la temperatura de consumo deseada y comprendiendo además todos los elementos y medios necesarios para el buen funcionamiento del sistema. 5 accumulators (5) and (6), connected by coils (11) and (12) respectively or plate heat exchangers, circulating the process or consumption water through the accumulators, the heat pump preheating the water in the First accumulator, the boiler providing the remaining heat to reach the desired consumption temperature and also comprising all the elements and means necessary for the proper functioning of the system.
10 2. Sistema según reivindicación 1 caracterizado porque el volumen de acumulación (5) es igual o cercano al volumen de agua consumido en un día. System according to claim 1 characterized in that the volume of accumulation (5) is equal to or close to the volume of water consumed in one day.
3. Sistema según reivindicación 1 caracterizado porque la orden de funcionamiento de la bomba de calor se determina en función de los valores de temperatura medidos en la sonda (13) y en la sonda de temperatura exterior ambiente (14), determinando su rendimiento en el funcionamiento, así como en función del precio de la electricidad. 3. System according to claim 1 characterized in that the order of operation of the heat pump is determined according to the temperature values measured in the probe (13) and in the ambient outdoor temperature probe (14), determining its performance in the operation, as well as depending on the price of electricity.
15 4. Sistema según reivindicación 1 caracterizado porque la caldera (3) puede funcionar en cualquier momento en que la temperatura del acumulador (6) descienda por debajo de la temperatura deseada del agua de consumo. System according to claim 1 characterized in that the boiler (3) can operate at any time when the temperature of the accumulator (6) falls below the desired temperature of the drinking water.
5. Sistema según reivindicación 1 caracterizado porque los acumuladores están conectados según un circuito en serie desde el punto de vista del sentido del agua de consumo y en el orden primero por el acumulador (5) y luego por el acumulador (6). 5. System according to claim 1 characterized in that the accumulators are connected according to a series circuit from the point of view of the direction of the drinking water and in the first order by the accumulator (5) and then by the accumulator (6).
20 6. Sistema según reivindicación 1 caracterizado porque el agua que circula a través de los acumuladores (5) y (6) puede ser tanto agua caliente sanitaria de consumo como agua de circuito primario cerrado. A system according to claim 1, characterized in that the water circulating through the accumulators (5) and (6) can be both domestic hot water and closed primary circuit water.
OFICINA ESPAÑOLA DE PATENTES Y MARCAS SPANISH OFFICE OF THE PATENTS AND BRAND N.º solicitud: 201200449 Application no .: 201200449 ESPAÑA SPAIN Fecha de presentación de la solicitud: 02.04.2012 Date of submission of the application: 02.04.2012 Fecha de prioridad: Priority Date: INFORME SOBRE EL ESTADO DE LA TECNICA REPORT ON THE STATE OF THE TECHNIQUE 51 Int. Cl. : Ver Hoja Adicional 51 Int. Cl.: See Additional Sheet DOCUMENTOS RELEVANTES RELEVANT DOCUMENTS
Categoría Category
56 Documentos citados Reivindicaciones afectadas 56 Documents cited Claims Affected
X X
EP 0611923 A1 (MUELLER FRIEDRICH) 24.08.1994, columna 1, líneas 1-9,26-37,45-49; columna 2, líneas 2-19; columna 3, línea 38 – columna 4, línea 6; columna 4, líneas 24-28; figura 1. 1-6 EP 0611923 A1 (MUELLER FRIEDRICH) 24.08.1994, column 1, lines 1-9,26-37,45-49; column 2, lines 2-19; column 3, line 38 - column 4, line 6; column 4, lines 24-28; Figure 1. 1-6
X X
KR 100778686B B1 (PHOENIX CONSTRUCTION CO LTD et al.) 22.11.2007, resumen recuperado de la base de datos Epoquenet data (Oficina Europea de Patentes) con fecha 26.05.2013; figura 1. 1,4,5 KR 100778686B B1 (PHOENIX CONSTRUCTION CO LTD et al.) 22.11.2007, summary retrieved from the Epoquenet data database (European Patent Office) dated 26.05.2013; Figure 1. 1,4,5
A TO
EP 2420747 A2 (LG ELECTRONICS INC) 22.02.2012, párrafos [0013]-[0015],[0019]-[0020],[0036]-[0037],[0046],[0050]; figura 2. 1-6 EP 2420747 A2 (LG ELECTRONICS INC) 22.02.2012, paragraphs [0013] - [0015], [0019] - [0020], [0036] - [0037], [0046], [0050]; figure 2. 1-6
A TO
EP 0151460 A2 (SULZER AG) 14.08.1985, todo el documento. 1,3-6 EP 0151460 A2 (SULZER AG) 14.08.1985, the whole document. 1.3-6
Categoría de los documentos citados X: de particular relevancia Y: de particular relevancia combinado con otro/s de la misma categoría A: refleja el estado de la técnica O: referido a divulgación no escrita P: publicado entre la fecha de prioridad y la de presentación de la solicitud E: documento anterior, pero publicado después de la fecha de presentación de la solicitud Category of the documents cited X: of particular relevance Y: of particular relevance combined with other / s of the same category A: reflects the state of the art O: refers to unwritten disclosure P: published between the priority date and the date of priority submission of the application E: previous document, but published after the date of submission of the application
El presente informe ha sido realizado • para todas las reivindicaciones • para las reivindicaciones nº: This report has been prepared • for all claims • for claims no:
Fecha de realización del informe 29.04.2013 Date of realization of the report 29.04.2013
Examinador A. Rodríguez Cogolludo Página 1/4 Examiner A. Rodríguez Cogolludo Page 1/4
INFORME DEL ESTADO DE LA TÉCNICA REPORT OF THE STATE OF THE TECHNIQUE Nº de solicitud: 201200449 Application number: 201200449 CLASIFICACIÓN OBJETO DE LA SOLICITUD CLASSIFICATION OBJECT OF THE APPLICATION F24H4/02 (2006.01) F24H1/00 (2006.01) F24H4/04 (2006.01) F24H1/50 (2006.01) F24D12/02 (2006.01) F24D3/18 (2006.01) F24H4 / 02 (2006.01) F24H1 / 00 (2006.01) F24H4 / 04 (2006.01) F24H1 / 50 (2006.01) F24D12 / 02 (2006.01) F24D3 / 18 (2006.01) Documentación mínima buscada (sistema de clasificación seguido de los símbolos de clasificación) Minimum documentation sought (classification system followed by classification symbols) F24D F24D Bases de datos electrónicas consultadas durante la búsqueda (nombre de la base de datos y, si es posible, términos de búsqueda utilizados) Electronic databases consulted during the search (name of the database and, if possible, search terms used) INVENES, EPODOC INVENTIONS, EPODOC Informe del Estado de la Técnica Página 2/4 State of the Art Report Page 2/4 OPINIÓN ESCRITA  WRITTEN OPINION Nº de solicitud: 201200449 Application number: 201200449 Fecha de Realización de la Opinión Escrita: 29.04.2013 Date of Completion of Written Opinion: 04.29.2013 Declaración Statement
Novedad (Art. 6.1 LP 11/1986) Novelty (Art. 6.1 LP 11/1986)
Reivindicaciones Reivindicaciones 2-4 1,5,6 SI NO Claims Claims 2-4 1,5,6 IF NOT
Actividad inventiva (Art. 8.1 LP11/1986) Inventive activity (Art. 8.1 LP11 / 1986)
Reivindicaciones Reivindicaciones 1-6 SI NO Claims Claims 1-6 IF NOT
Se considera que la solicitud cumple con el requisito de aplicación industrial. Este requisito fue evaluado durante la fase de examen formal y técnico de la solicitud (Artículo 31.2 Ley 11/1986). The application is considered to comply with the industrial application requirement. This requirement was evaluated during the formal and technical examination phase of the application (Article 31.2 Law 11/1986). Base de la Opinión.-  Opinion Base.- La presente opinión se ha realizado sobre la base de la solicitud de patente tal y como se publica. This opinion has been made on the basis of the patent application as published. Informe del Estado de la Técnica Página 3/4 State of the Art Report Page 3/4 OPINIÓN ESCRITA  WRITTEN OPINION Nº de solicitud: 201200449 Application number: 201200449 1. Documentos considerados.-  1. Documents considered.- A continuación se relacionan los documentos pertenecientes al estado de la técnica tomados en consideración para la realización de esta opinión. The documents belonging to the state of the art taken into consideration for the realization of this opinion are listed below.
Documento Document
Número Publicación o Identificación Fecha Publicación Publication or Identification Number publication date
D01 D01
EP 0611923 A1 (MUELLER FRIEDRICH) 24.08.1994 EP 0611923 A1 (SPRING FRIEDRICH) 24.08.1994
2. Declaración motivada según los artículos 29.6 y 29.7 del Reglamento de ejecución de la Ley 11/1986, de 20 de marzo, de Patentes sobre la novedad y la actividad inventiva; citas y explicaciones en apoyo de esta declaración  2. Statement motivated according to articles 29.6 and 29.7 of the Regulation of execution of Law 11/1986, of March 20, on Patents on novelty and inventive activity; quotes and explanations in support of this statement La solicitud se refiere a una instalación de calentamiento de agua que emplea dos fuentes de calor: por una parte, una bomba de calor, y por otra una caldera de combustible fósil. Con la primera de esas fuentes se precalienta agua de consumo o de un circuito cerrado, y cuando así se requiere, el calentamiento se completa por medio del calor aportado por la caldera de combustión tradicional. De acuerdo con la reivindicación 1 de la solicitud, cada uno de los sistemas de calentamiento con los que cuenta el sistema dispone de un intercambiador de calor, o bien de un serpentín, para aportar calor a un acumulador de agua. The application refers to a water heating installation that uses two sources of heat: on the one hand, a heat pump, and on the other a fossil fuel boiler. With the first of these sources, pre-heated water or a closed circuit is preheated, and when required, the heating is completed by means of the heat provided by the traditional combustion boiler. According to claim 1 of the application, each of the heating systems available to the system has a heat exchanger, or a coil, to provide heat to a water accumulator. El documento D01, al que pertenecen las referencias que se citan a continuación, divulga una instalación de calentamiento de agua que hace uso de una bomba de calor o bien un colector solar (12) y que contempla un calentamiento adicional por medio de una caldera de combustible fósil (24). Tal y como se describe en este documento, las fuentes de calor lo transmiten al agua de proceso a través de sendos intercambiadores (20) y (26), que pueden estar dispuestos en un mismo depósito acumulador (10) o bien en varios depósitos situados en batería (columna 4, líneas 24 -28). Document D01, to which the references cited below belong, discloses a water heating installation using a heat pump or a solar collector (12) and contemplating additional heating by means of a boiler fossil fuel (24). As described in this document, the heat sources transmit it to the process water through two exchangers (20) and (26), which can be arranged in the same accumulator tank (10) or in several tanks located on battery (column 4, lines 24-28). Por tanto, la reivindicación 1 de la solicitud no cumpliría el requisito de novedad a la vista del documento D01 (art. 6.1 Ley 11/1986 de Patentes). Therefore, claim 1 of the application would not meet the requirement of novelty in view of document D01 (art. 6.1 Patent Law 11/1986). Las características técnicas de las reivindicaciones dependientes 5 y 6 de la solicitud se hallan recogidas idénticamente en D01, por lo cual tampoco serían nuevas (art. 6.1 Ley 11/1986). The technical characteristics of the dependent claims 5 and 6 of the application are set forth identically in D01, so they would not be new either (art. 6.1 Law 11/1986). Por lo que respecta a las restantes reivindicaciones dependientes de la solicitud, la selección del volumen de agua almacenado en función de las necesidades de consumo diario (reiv. 2) resultaría obvia para un experto en la materia. Por tanto, la reivindicación 2 carecería de actividad inventiva (art. 8.1 Ley 11/1986 de Patentes). Lo mismo se podría afirmar en relación con las reivindicaciones 3 y 4, ya que en el sistema que describe el documento D01, la caldera entra en funcionamiento cuando la temperatura en el acumulador de la bomba de calor no alcanza un valor umbral preestablecido, y en este mismo documento se menciona, además de la temperatura, el precio de la electricidad como criterio empleado para poner en funcionamiento la caldera. With regard to the remaining claims depending on the application, the selection of the volume of water stored according to the needs of daily consumption (reiv. 2) would be obvious to one skilled in the art. Therefore, claim 2 would lack inventive activity (art. 8.1 Patent Law 11/1986). The same could be said in relation to claims 3 and 4, since in the system described in document D01, the boiler starts operating when the temperature in the heat pump accumulator does not reach a preset threshold value, and in This same document mentions, in addition to the temperature, the price of electricity as a criterion used to put the boiler into operation. Informe del Estado de la Técnica Página 4/4 State of the Art Report Page 4/4
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105258333A (en) * 2015-11-20 2016-01-20 李家海 Double-heat-pump winding pipe type water heater

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* Cited by examiner, † Cited by third party
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CN106482546A (en) * 2016-10-25 2017-03-08 李家海 The special tube-in-tube heat exchanger of a kind of pair of Teat pump boiler

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EP0151460A2 (en) * 1984-02-09 1985-08-14 GebràœDer Sulzer Aktiengesellschaft Space-heating system
EP0611923A1 (en) * 1993-02-18 1994-08-24 Friedrich Müller Method for the control of legionnella in hot water installations with an accumalator
KR100778686B1 (en) * 2006-08-18 2007-11-22 주식회사 피닉스건설 System to supply hot water by collecting terrestrial heat
EP2420747A2 (en) * 2010-08-17 2012-02-22 LG Electronics, Inc. Heat pump

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EP0151460A2 (en) * 1984-02-09 1985-08-14 GebràœDer Sulzer Aktiengesellschaft Space-heating system
EP0611923A1 (en) * 1993-02-18 1994-08-24 Friedrich Müller Method for the control of legionnella in hot water installations with an accumalator
KR100778686B1 (en) * 2006-08-18 2007-11-22 주식회사 피닉스건설 System to supply hot water by collecting terrestrial heat
EP2420747A2 (en) * 2010-08-17 2012-02-22 LG Electronics, Inc. Heat pump

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105258333A (en) * 2015-11-20 2016-01-20 李家海 Double-heat-pump winding pipe type water heater

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