ES2326573B1 - CLIMATE CONTROL SYSTEM OF BUILDINGS. - Google Patents

CLIMATE CONTROL SYSTEM OF BUILDINGS. Download PDF

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Publication number
ES2326573B1
ES2326573B1 ES200603014A ES200603014A ES2326573B1 ES 2326573 B1 ES2326573 B1 ES 2326573B1 ES 200603014 A ES200603014 A ES 200603014A ES 200603014 A ES200603014 A ES 200603014A ES 2326573 B1 ES2326573 B1 ES 2326573B1
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Spain
Prior art keywords
temperature
collector
air conditioning
transmitter
heat
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Expired - Fee Related
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ES200603014A
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Spanish (es)
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ES2326573A1 (en
Inventor
Juan Ortigosa Garcia
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Ortronic Technology S L
ORTRONIC TECHNOLOGY SL
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Ortronic Technology S L
ORTRONIC TECHNOLOGY SL
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0046—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B27/00—Machines, plants or systems, using particular sources of energy
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
    • 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]
    • Y02B30/54—Free-cooling systems

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Energy (AREA)
  • Sustainable Development (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Other Air-Conditioning Systems (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)

Abstract

Sistema de climatización de edificios.Building air conditioning system.

El sistema se basa en el hecho de que a determinada profundidad del suelo existe una temperatura sensiblemente constante, que oscila entre 9 y 11ºC a lo largo del año a un metro de profundidad. A esta profundidad se establece un colector (3) conectado a un circuito cerrado con un transmisor (6) que a su vez forra las paredes y el techo del habitáculo (9) a climatizar, circulando por este circuito un líquido calo-portador, preferentemente agua, con el concurso de una bomba (8), de manera que dicho líquido cede calor al suelo en el colector, adaptándose a la temperatura del terreno, y absorbe calor a nivel del transmisor (6) en el seno del habitáculo (9), consiguiéndose de esta manera temperaturas comprendidas entre 15 y 25ºC ante altas temperaturas exteriores, que sobrepasen sustancialmente los 40ºC y/o la existencia en el seno del habitáculo (9) de equipos que generen gran cantidad de calor y que deban ser refrigerados. El sistema supone un ahorro energético frente a los sistemas de refrigeración convencionales que en el caso específico de casetas para repetidores de telefonía móvil supera el 90%.The system is based on the fact that certain soil depth there is a temperature noticeably constant, which ranges between 9 and 11 ° C along the year to a meter deep. At this depth a manifold (3) connected to a closed circuit with a transmitter (6) which in turn lines the walls and roof of the passenger compartment (9) to air conditioning, circulating through this circuit a liquid heat carrier, preferably water, with the contest of a pump (8), so that said liquid yields heat to the ground in the collector, adapting to the ground temperature, and absorbs heat at the transmitter level (6) inside the passenger compartment (9), thus achieving temperatures between 15 and 25ºC before high outside temperatures, which exceed substantially 40 ° C and / or existence within the cabin (9) of equipment that generates a lot of heat and that They must be refrigerated. The system saves energy compared to conventional refrigeration systems that in the specific case of booths for mobile phone repeaters exceeds 90%.

Description

Sistema de climatización de edificios.Building air conditioning system.

Objeto de la invenciónObject of the invention

La presente invención se refiere a un sistema de climatización de edificios, que resulta especialmente idóneo para casetas de las utilizadas en el alojamiento de repetidores telefónicos, cuyos equipos deben mantenerse convenientemente refrigerados, pero que es igualmente utilizable en viviendas de campo y en general en cualquier edificación que necesite regular su temperatura interior.The present invention relates to a system of building air conditioning, which is especially suitable for booths used in the housing of repeaters telephone, whose equipment must be conveniently maintained refrigerated, but that is equally usable in homes of field and in general in any building that needs to regulate its indoor temperature

El objeto de la invención es efectuar dicha climatización aprovechando la temperatura del subsuelo y, consecuentemente, sin prácticamente consumo energético.The object of the invention is to effect said air conditioning taking advantage of the subsoil temperature and, consequently, with virtually no energy consumption.

Antecedentes de la invenciónBackground of the invention

En el ámbito preferente de aplicación práctica de la invención, el de las casetas para repetidores telefónicos, los equipos electrónicos generan gran cantidad de calor, que no puede ser disipado al exterior mediante el simple establecimiento de rejillas de sus paredes, ya que debe mantenerse a una temperatura comprendida entre 15º y 25ºC, lo que requiere la utilización de equipos de refrigeración, concretamente a base de circuitos frigoríficos, que suponen un consumo de energía muy notable.In the preferred scope of practical application of the invention, that of the booths for telephone repeaters, electronic equipment generates a lot of heat, which does not It can be dissipated abroad by simply setting of grilles of its walls, since it must be kept at a temperature between 15º and 25ºC, which requires the use of refrigeration equipment, specifically based on refrigeration circuits, which involve very energy consumption remarkable.

Circunstancias similares se dan en edificaciones destinadas a viviendas, como las citadas viviendas de campo, en lugares en los que la temperatura alcanza valores muy notables durante el verano, edificaciones en las que se utilizan los mismos sistemas de refrigeración anteriormente citados, u otros similares, todos ellos con el denominador común de un consumo de energía muy considerable, lo que repercute negativamente tanto a nivel económico para el usuario como a nivel de contaminación medioambiental cuando dicha energía se obtiene a partir de carbón, derivados del petróleo, etc.Similar circumstances occur in buildings intended for housing, such as the aforementioned country houses, in places where the temperature reaches very remarkable values during the summer, buildings in which they are used refrigeration systems mentioned above, or similar ones, all of them with the common denominator of a very energy consumption considerable, which negatively affects both level Economical for the user and at the level of contamination environmental when said energy is obtained from coal, petroleum products, etc.

Descripción de la invenciónDescription of the invention

El sistema de climatización que la invención propone resuelve de forma plenamente satisfactoria la problemática anteriormente expuesta en los diferentes aspectos comentados.The air conditioning system that the invention proposes to solve the problem fully satisfactorily previously exposed in the different aspects commented.

Para ello y de forma más concreta dicho sistema se basa, como ya se ha apuntado con anterioridad, en la temperatura del subsuelo, ya que por ejemplo en España y tanto durante el invierno como durante el verano, a una profundidad de un metro existe una temperatura que se mantiene constante entre 9º y 11ºC.To do this and more specifically this system It is based, as noted above, on temperature of the subsoil, since for example in Spain and both during the winter as during the summer, at a depth of one meter there is a temperature that remains constant between 9º and 11 ° C.

El sistema consiste en transportar dicha temperatura al interior de la edificación, en orden a conseguir la refrigeración de esta última.The system consists of transporting said temperature inside the building, in order to achieve the cooling of the latter.

Para ello el sistema consiste en al utilización de un colector, destinado a enterrarse en el subsuelo a una profundidad adecuada a la temperatura deseada, como por ejemplo a la profundidad de un metro anteriormente citada, colector materializado en una serie de tubos, preferentemente de plástico, conectados en uno o varios circuitos y a través de los que se hace circular un líquido calo-portador, si bien puede utilizarse cualquier otro tipo de tubería de las empleadas en instalaciones de calefacción por suelo radiante.For this the system consists in the use of a collector, destined to bury itself in the underground depth appropriate to the desired temperature, such as at the depth of a meter mentioned above, collector materialized in a series of tubes, preferably plastic, connected in one or several circuits and through which it is made circulating a heat-carrying liquid, although it can be used any other type of pipe used in Underfloor heating installations.

El colector se cubre con tierra que sea buena conductora del calor, para poder absorber, con el mayor rendimiento posible, la temperatura existente a dicho nivel del subsuelo.The collector is covered with soil that is good conductive heat, to be able to absorb, with the highest performance possible, the existing temperature at that level of the subsoil.

El citado colector se complementa con un transmisor, estructurado a base de tuberías del mismo tipo que las empleadas en el colector, y que se instalan en el interior del edifico, preferentemente forrando las paredes laterales y/o el techo del mismo. Este transmisor puede tener también uno o varios circuitos, al igual que el colector.The said collector is complemented by a transmitter, structured based on pipes of the same type as the used in the collector, and that are installed inside the building, preferably covering the side walls and / or the roof of it. This transmitter can also have one or several circuits, like the collector.

Colector y transmisor están conectados entre sí formando un circuito cerrado por el que circula el líquido calo-portador, que generalmente será agua, circuito provisto de purgadores para extraer posibles burbujas de aire.Collector and transmitter are connected to each other forming a closed circuit through which the liquid circulates heat carrier, which will generally be water, circuit provided with traps to extract possible air bubbles.

La estructura descrita se complementa con una bomba de circulación que trasiega el agua entre el colector y el transmisor, bomba controlada por sensores de temperatura y por un sistema electrónico de control que determina el funcionamiento de la misma cuando la temperatura ambiental suba por encima de un valor preestablecido.The structure described is complemented by a circulation pump that transfers water between the collector and the transmitter, pump controlled by temperature sensors and by a electronic control system that determines the operation of the same when the ambient temperature rises above a preset value.

De acuerdo con esas estructuraciones el agua contenida en el colector cede calor al suelo, adquiriendo la temperatura de este último, y cuando el agua está a temperatura del suelo alcanza el transmisor, absorbe a su vez el calor del habitáculo, disminuyendo drásticamente la temperatura del mismo. Regulando el caudal de agua trasegada entre el colector y el transmisor se controla a su vez la temperatura en el interior del habitáculo, que puede mantenerse dentro de límites como los anteriormente citados de 15º a 25ºC.According to these structures the water contained in the collector gives heat to the ground, acquiring the temperature of the latter, and when the water is at the temperature of ground reaches the transmitter, in turn absorbs heat from the cabin, drastically decreasing its temperature. Regulating the flow of water back between the collector and the transmitter in turn controls the temperature inside the cabin, which can be kept within limits such as previously mentioned from 15º to 25ºC. 

       \newpage\ newpage

Como se deduce de lo anteriormente expuesto el único consumo energético es el correspondiente a la bomba de circulación del agua, consumo energético mínimo, que no llega ni siquiera al 10% del consumo energético de los sistemas convencionales de climatización a que se ha hecho mención con anterioridad.As deduced from the above, the only energy consumption is that corresponding to the pump water circulation, minimum energy consumption, which does not reach or even at 10% of the energy consumption of the systems conventional air conditioning that has been mentioned with anteriority.

Solo resta señalar por último que, en aquellas aplicaciones prácticas en las que se necesite frío en verano y calor en invierno, como complemento a la estructura descrita se utilizará una bomba de calor, que evidentemente sólo funcione en el invierno para elevar la temperatura del subsuelo, normalmente muy superior a la temperatura exterior al edificio.It only remains to point out finally that, in those practical applications where cold is needed in summer and heat in winter, as a complement to the structure described will use a heat pump, which obviously only works in the winter to raise the subsoil temperature, usually very higher than the outside temperature of the building.

Descripción de los dibujosDescription of the drawings

Para complementar la descripción que se está realizando y con objeto de ayudar a una mejor comprensión de las características del invento, de acuerdo con un ejemplo preferente de realización práctica del mismo, se acompaña como parte integrante de dicha descripción, un juego de dibujos en donde con carácter ilustrativo y no limitativo, se ha representado lo siguiente:To complement the description that is being performing and in order to help a better understanding of the characteristics of the invention, according to a preferred example of practical realization of it, is accompanied as part member of that description, a set of drawings where with illustrative and non-limiting nature, what has been represented next:

La figura 1.- Muestra, según una vista parcial y en perspectiva, indistintamente el colector o el transmisor que participan en el sistema de climatización de edificios objeto de la presente invención.Figure 1.- Shows, according to a partial view and in perspective, regardless of the collector or transmitter that they participate in the air conditioning system of buildings object of the present invention

La figura 2.- Muestra, según una representación esquemática en alzado lateral y en sección, una caseta dotada de dicho sistema de climatización.Figure 2.- Shows, according to a representation schematic in side elevation and section, a booth equipped with said air conditioning system.

Realización preferente de la invenciónPreferred Embodiment of the Invention

A la vista de las figuras reseñadas, donde se ha referenciado con (1) el suelo y con (2) la caseta implantada sobre el mismo, puede observarse como el sistema de climatización que la invención propone parte de la utilización de un colector (3), destinado a quedar enterrado en el suelo (1), a una profundidad adecuada como para que exista una temperatura sensiblemente constante a lo largo del año y relativamente baja, comprendida entre los 9 y 11ºC anteriormente citados para una profundidad del orden de 1 metro, teniendo dicho colector (3) la función de captar este nivel térmico en su zona de implantación.In view of the figures reviewed, where referenced with (1) the ground and with (2) the booth implanted on it can be seen as the air conditioning system that the invention proposes part of the use of a collector (3), destined to be buried in the ground (1), at a depth suitable for a temperature to exist substantially constant throughout the year and relatively low, comprised between 9 and 11ºC previously mentioned for a depth of order of 1 meter, said collector (3) having the function of capturing this thermal level in its implantation zone.

Tal como se observa en la figura 1 el colector (3) se materializa en una especie de manta a base de dos láminas superpuestas y fijadas entre sí mediante líneas de termo soldadura (4), determinantes de un tubo, que en la figura 2 se corresponde con la propia referencia (3), con una trayectoria sensiblemente espiral, como en el caso de la figura 1, sinuosa o de cualquier otro tipo, estableciéndose en cualquier caso en el seno del colector (3) un recorrido considerablemente largo para un fluido calo-portador, como por ejemplo agua, que asegure que a su salida del colector (3) dicho líquido haya adoptado la temperatura del subsuelo, cediendo a este último el calor de que era portador.As shown in figure 1 the collector (3) materializes in a kind of blanket based on two sheets superimposed and fixed together by thermo welding lines (4), determinants of a tube, which in Figure 2 corresponds with the reference itself (3), with a trajectory noticeably spiral, as in the case of figure 1, sinuous or of any other type, settling in any case within the collector (3) a considerably long route for a fluid heat carrier, such as water, to ensure that at its exit from the collector (3) said liquid has adopted the subsoil temperature, giving the latter the heat of He was a carrier.

El colector (3) se complementa con un transmisor (6), de similares características, destinado a cubrir las paredes y techo del habitáculo (2), tal como se ha representado esquemáticamente en la figura 2, y que en función de la utilidad práctica del edificio podrá estar simplemente adaptado a dichas paredes y techo, resultando visible, o empotrado en las mismas, tal como se ha representado en la figura 2, cuando se requiera de una estética interior.The manifold (3) is complemented by a transmitter (6), of similar characteristics, intended to cover the walls and roof of the passenger compartment (2), as shown schematically in figure 2, and that depending on the utility building practice may simply be adapted to those walls and ceiling, resulting visible, or embedded in them, such as depicted in figure 2, when a interior aesthetics

El colector (3) y el transmisor (6) están conectados entre sí formando un circuito cerrado mediante una pareja de conducciones (7-7') en una de las cuales se intercala una bomba (8) para circulación de líquido calo- portador a través del citado circuito cerrado.The collector (3) and the transmitter (6) are connected together forming a closed circuit through a conduction pair (7-7 ') in one of which a pump (8) is inserted for circulation of heated liquid carrier through said closed circuit.

Sensores de temperatura situados en el habitáculo (9) suministran información a un circuito de control que puede estar situado en el mismo alojamiento que la bomba (8), circuito de control que, de acuerdo con unos parámetros preestablecidos, establece los tiempos de funcionamiento de la bomba (8) para mantener en el habitáculo (9) la temperatura seleccionada, con independencia de cual sea la temperatura exterior.Temperature sensors located in the cabin (9) supply information to a control circuit that it can be located in the same housing as the pump (8), control circuit which, according to some parameters preset, set the operating times of the pump (8) to maintain the temperature (9) in the cabin selected, regardless of the temperature Exterior.

El sistema permite, ante fuertes temperaturas exteriores que pueden sobrepasar los 40ºC, mantener en el interior del habitáculo (9) una temperatura comprendida entre 15 y 25ºC.The system allows, in high temperatures exteriors that can exceed 40ºC, keep inside of the cabin (9) a temperature between 15 and 25 ° C.

Tal como anteriormente se ha dicho y como es evidente, el consumo energético de la bomba (8) es extraordinariamente más bajo que el consumo de los equipos frigoríficos convencionales utilizados hasta la fecha. Específicamente en su aplicación a casetas para repetidores de telefonía móvil, donde al calor ambiental exterior hay que añadir la fuerte disipación de calor en el seno del propio habitáculo (9) por los correspondientes equipos, el sistema de la invención permite obtener la citada temperatura comprendida entre 15 y 25ºC con un ahorro energético superior al 90%.As previously stated and as is Obviously, the energy consumption of the pump (8) is extraordinarily lower than the equipment consumption Conventional refrigerators used to date. Specifically in its application to booths for repeaters of mobile telephony, where to the outside ambient heat must be added the strong heat dissipation within the cabin itself (9) by the corresponding equipment, the system of the invention allows to obtain the mentioned temperature between 15 and 25ºC with an energy saving greater than 90%.

Claims (5)

1. Sistema de climatización de edificios, que siendo de especial aplicación en casetas para repetidores de telefonía móvil, viviendas de campo y en general cualquier edificación que necesite regular su temperatura interior, se caracteriza porque está constituido mediante la combinación funcional de un colector (3) destinado a implantarse en el subsuelo (1), a un nivel de profundidad adecuado a la temperatura de captación prevista para el colector, y un transmisor (6) que cubre las paredes y/o techo del habitáculo (9) a acondicionar térmicamente, estando colector (3) y transmisor (6) conectados entre sí mediante conducciones (7-7') formando un circuito cerrado, a través del que circula, con la colaboración de una bomba (8), un líquido calo-portador, preferentemente agua, de manera que dicho líquido adopta la temperatura del subsuelo a su salida del colector (3) y absorbe el calor existente en el habitáculo (9) a través del transmisor (6).1. Building air conditioning system, which being of special application in booths for mobile phone repeaters, country houses and in general any building that needs to regulate its interior temperature, is characterized in that it is constituted by the functional combination of a collector (3 ) intended for implantation in the subsoil (1), at a level of depth appropriate to the collection temperature expected for the collector, and a transmitter (6) covering the walls and / or roof of the passenger compartment (9) to be thermally conditioned, being manifold (3) and transmitter (6) connected to each other by means of conduits (7-7 ') forming a closed circuit, through which a heat-carrying liquid, preferably water, circulates, in collaboration with a pump (8) , so that said liquid adopts the temperature of the subsoil at its exit from the collector (3) and absorbs the heat existing in the cabin (9) through the transmitter (6). 2. Sistema de climatización de edificios, según reivindicación la, caracterizado porque tanto el colector (3) como el transmisor (6) están constituidos a partir de tubos, preferentemente de plástico, conectados en uno o varios circuitos con largo recorrido, quedando el colector (3) enterrado en el suelo y cubierto con tierra con características de buena conducción térmica.2. Building air conditioning system, according to claim la, characterized in that both the collector (3) and the transmitter (6) are constituted from tubes, preferably plastic, connected in one or several circuits with a long distance, the collector remaining (3) buried in the ground and covered with earth with characteristics of good thermal conduction. 3. Sistema de climatización de edificios, según reivindicaciones anteriores, caracterizado porque para obtener en el habitáculo (9) una temperatura comprendida entre 15 y 25ºC, el colector (3) se sitúa a una profundidad del orden de 1 metro con respecto al nivel del suelo.3. Building air conditioning system, according to previous claims, characterized in that in order to obtain in the cabin (9) a temperature between 15 and 25 ° C, the collector (3) is located at a depth of the order of 1 meter with respect to the level of the ground. 4. Sistema de climatización de edificios, según reivindicaciones anteriores, caracterizado porque en el habitáculo (9) se establecen sensores de temperatura que suministran información a un circuito electrónico de control que gobierna la bomba (8), determinando los periodos de funcionamiento de la misma en función del límite máximo de temperatura previsto en el habitáculo (9).4. Building air conditioning system, according to previous claims, characterized in that in the cabin (9) temperature sensors are established that provide information to an electronic control circuit that governs the pump (8), determining the periods of operation thereof depending on the maximum temperature limit provided in the passenger compartment (9). 5. Sistema de climatización de edificios, según reivindicaciones anteriores, caracterizado porque en habitáculos (9) en los que sea necesario elevar la temperatura en periodo invernal, el circuito incorpora una bomba de calor que funciona durante dicho periodo invernal para elevar la temperatura del subsuelo.5. Building air conditioning system, according to previous claims, characterized in that in rooms (9) in which it is necessary to raise the temperature during the winter period, the circuit incorporates a heat pump that operates during said winter period to raise the subsoil temperature. .
ES200603014A 2006-11-24 2006-11-24 CLIMATE CONTROL SYSTEM OF BUILDINGS. Expired - Fee Related ES2326573B1 (en)

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ES200603014A ES2326573B1 (en) 2006-11-24 2006-11-24 CLIMATE CONTROL SYSTEM OF BUILDINGS.

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ES200603014A ES2326573B1 (en) 2006-11-24 2006-11-24 CLIMATE CONTROL SYSTEM OF BUILDINGS.

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ES2326573B1 true ES2326573B1 (en) 2010-07-21

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1194297A (en) * 1997-09-18 1999-04-09 Sanwa Sekkei Kk Air-conditioning equipment of underground temperature introduction type
JP2001050608A (en) * 1999-08-06 2001-02-23 Toko Kogyo:Kk District cooling and heating system
JP2006071258A (en) * 2004-09-01 2006-03-16 Kiitekku Kogyo Kk Air heat exchanger for high efficient temperature rising
JP2006292310A (en) * 2005-04-13 2006-10-26 Nippon Steel Engineering Co Ltd Geothermal heat pump device, geothermal unit having it, and control method of geothermal heat pump device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003071258A (en) * 2001-09-05 2003-03-11 Toshiba Ceramics Co Ltd Porous base plate

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1194297A (en) * 1997-09-18 1999-04-09 Sanwa Sekkei Kk Air-conditioning equipment of underground temperature introduction type
JP2001050608A (en) * 1999-08-06 2001-02-23 Toko Kogyo:Kk District cooling and heating system
JP2006071258A (en) * 2004-09-01 2006-03-16 Kiitekku Kogyo Kk Air heat exchanger for high efficient temperature rising
JP2006292310A (en) * 2005-04-13 2006-10-26 Nippon Steel Engineering Co Ltd Geothermal heat pump device, geothermal unit having it, and control method of geothermal heat pump device

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