DE10360580B4 - Heat recovery unit with solar heat exchanger - Google Patents

Heat recovery unit with solar heat exchanger Download PDF

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Publication number
DE10360580B4
DE10360580B4 DE10360580A DE10360580A DE10360580B4 DE 10360580 B4 DE10360580 B4 DE 10360580B4 DE 10360580 A DE10360580 A DE 10360580A DE 10360580 A DE10360580 A DE 10360580A DE 10360580 B4 DE10360580 B4 DE 10360580B4
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Prior art keywords
air
heat exchanger
solar
heating
heat
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DE10360580A
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German (de)
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DE10360580A1 (en
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Eberhard Paul
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    • 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
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
    • F24F12/001—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
    • F24F12/006—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air using an air-to-air heat exchanger
    • 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
    • F24F5/005—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 using energy from the ground by air circulation, e.g. "Canadian well"
    • 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
    • F24F2005/0064—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 using solar energy
    • 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
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/40—Geothermal heat-pumps
    • 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]
    • Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
    • 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
    • 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]
    • Y02B30/56—Heat recovery units

Abstract

Wärmerückgewinnungsgerät bestehend aus einem ersten von einer Solarflüssigkeit durchströmten Solarwärmetauscher (9) zur Vorwärmung von Außenluft (8), einem Luft-Luft-Wärmetauscher (2) zur weiteren Erwärmung der Außenluft (8) durch Abluft und einem zweiten von einer Solarflüssigkeit durchströmten Solarwärmetauscher (12) zur Zulufterwärmung.Heat recovery device consisting of a first solar heat exchanger (9) through which a solar fluid flows to preheat outside air (8), an air-to-air heat exchanger (2) for further heating of the outside air (8) using exhaust air and a second solar heat exchanger (12) through which a solar fluid flows ) for supply air heating.

Description

Stand der TechnikState of the art

Die Erfindung betrifft ein Wärmerückgewinnungsgerät vorwiegend für die Wohnungslüftung mit Luft-Luft-Wärmetauscher und/oder einer Wärmepumpe und einem zusätzlichen Solarwärmetauscher.The invention relates to a heat recovery device mainly for home ventilation with air-air heat exchanger and / or a heat pump and an additional solar heat exchanger.

Es ist bekannt, dass die Wärme der Abluft in einem Abluft-Außenluft-Wärmetauscher genutzt wird und die Fortluft dann in einem weiteren Schritt in einer Luft-Wasser-Wärmepumpe nochmals Wärme abgibt. Um den Luft-Luft-Wärmetauscher frostfrei zu halten, wird die Außenluft bei frostigen Außentemperaturen häufig in einem Erdrohrwärmetauscher auf 0 bis +7°C vorgewärmt. Demzufolge verlässt die Fortluft den Luftluft-Wärmetauscher (bei einer guten Effizienz dieses Rekuperators) mit ca. +5 bis +12°C und gelangt danach in die Wärmepumpe. Installierte solarthermische Anlagen stehen bei winterlichen Temperaturen oft still, da die Speicher-(oder Puffer-)temperatur (unten) oft höher ist als die solarthermisch erzeugbare Vorlauftemperatur. Eine Vorrichtung zur Wärmerückgewinnung ist durch die DE 195 44 245 A1 bekannt geworden.It is known that the heat of the exhaust air is used in an exhaust air-outside air heat exchanger and the exhaust air then emits heat in a further step in an air-water heat pump again. In order to keep the air-to-air heat exchanger frost-free, the outside air is often preheated to 0 to + 7 ° C in frosty outside temperatures in a ground tube heat exchanger. As a result, the exhaust air leaves the air-air heat exchanger (with a good efficiency of this recuperator) with approx. +5 to + 12 ° C and then reaches the heat pump. Installed solar thermal systems often stand still in wintry temperatures, since the storage (or buffer) temperature (below) is often higher than the solar thermal generated flow temperature. A device for heat recovery is through the DE 195 44 245 A1 known.

Aufgabe der ErfindungObject of the invention

Aufgabe der Erfindung ist es, die solarthermische Energie im Wärmerückgewinnungsgerät nutzbringend zu verwerten.The object of the invention is to utilize the solar thermal energy in the heat recovery device useful.

Diese Aufgabe wird mit den Merkmalen der nebengeordneten Ansprüche 1 und 2 gelöst.This object is achieved with the features of the independent claims 1 and 2.

Zeichnungdrawing

Ein Ausführungsbeispiel der Erfindung ist in 2 dargestellt; die 1a und 1b zeigen verschiedene Möglichkeiten der Anordnung des Solarwärmetauschers 9.An embodiment of the invention is in 2 shown; the 1a and 1b show different ways of arranging the solar heat exchanger 9 ,

Das in 2 dargestellte Wärmerückgewinnungsgerät zur Erwärmung der Zuluft eines nicht dargestellten Gebäudes besteht aus einem ersten von einer Solarflüssigkeit. durchströmten Solarwärmetauscher 9 zur Vorwärmung von Außenluft 8, einem Luft-Luft-Wärmetauscher 2 zur weiteren Erwärmung der Außenluft 8 durch aus dem Gebäude abgesaugte Abluft und einem zweiten von einer Solarflüssigkeit durchströmten Solarwärmetauscher 12 zur weiteren Zulufterwärmung.This in 2 illustrated heat recovery device for heating the supply air of a building, not shown, consists of a first of a solar fluid. flowed through solar heat exchanger 9 for preheating outside air 8th , an air-to-air heat exchanger 2 for further heating of the outside air 8th by exhaust air extracted from the building and a second solar heat exchanger through which a solar fluid flows 12 for further supply air heating.

Alternativ besteht das Wärmerückgewinnungsgerät aus einem Luft-Luft-Wärmetauscher 2 zur Erwärmung von Außenluft 8 durch Abluft, einer Wärmepumpe 3 zum weiteren Wärmeentzug der Abluft, einem von einer Solarflüssigkeit durchströmten Solarwärmetauscher 9 zur Vorwärmung der Außenluft 8 und/oder einem von einer Solarflüssigkeit durchströmten Solarwärmetauscher 12 zur Zulufterwärmung Somit wird die Solarthermie 6 zur Erwärmung der Außenluft 8 (vom Erdrohrwärmetauscher kommend, wie in 1a dargestellt) oder zur Erwärmung der Luft 10 und 11 (nach Luft-Luft-Wärmetauscher 2 und vor der Luft-Wasser-Wärmepumpe 3 entsprechend 1b) genutzt. Die durch den Solarwärmetauscher 9 erwärmte Luft erhöht die Heizleistung der Wärmepumpe 3.Alternatively, the heat recovery device consists of an air-to-air heat exchanger 2 for heating outside air 8th by exhaust air, a heat pump 3 for further heat extraction of the exhaust air, a solar heat exchanger through which a solar fluid flows 9 for preheating the outside air 8th and / or a solar heat exchanger through which a solar fluid flows 12 for supply air heating Thus, the solar thermal 6 for heating the outside air 8th (coming from the earth tube heat exchanger, as in 1a shown) or for heating the air 10 and 11 (after air-air heat exchanger 2 and in front of the air-water heat pump 3 corresponding 1b ) used. The through the solar heat exchanger 9 heated air increases the heat output of the heat pump 3 ,

Einerseits wird die im Solarwärmetauscher 9 vorgewärmte Außenluft im Luft-Luft-Wärmetauscher 2 zu einer höheren Temperatur der Fortluft 11 führen, andererseits wird die vom Erdrohrwärmetauscher 1 kommende Außenluft 8 solar vorgewärmt direkt als Luftstrom 10 der Wärmepumpe 3 zugeleitet. Ein weiterer Vorteil ergibt sich, wenn die solarthermische Vorlauftemperatur über der Zulufttemperatur liegt, z. B. bei 35°C, aber niedriger als die Temperatur des Warmwasserspeichers 4 (unten). Hier dient die höherwertige Solarenergie zunächst der Zulufterwärmung im Solarwärmetauscher 12 und erst danach (in Reihenschaltung) der oben beschriebenen Außenlufterwärmung im Solarwärmetauscher 9. Der letztere Schritt ist nicht zwingend erforderlich, d. h. die 24°C kühle Solarflüssigkeit würde zur Solaranlage zurückströmen.On the one hand, in the solar heat exchanger 9 preheated outside air in the air-to-air heat exchanger 2 to a higher temperature of the exhaust air 11 on the other hand, that of the Erdrohrwärmetauscher 1 coming outside air 8th solar preheated directly as airflow 10 the heat pump 3 fed. Another advantage arises when the solar thermal flow temperature is above the supply air temperature, z. B. at 35 ° C, but lower than the temperature of the hot water tank 4 (below). Here, the high-quality solar energy initially serves the supply air heating in the solar heat exchanger 12 and only then (in series) of the above-described outside air heating in the solar heat exchanger 9 , The latter step is not absolutely necessary, ie the 24 ° C cool solar fluid would flow back to the solar system.

Durch derartige vorteilhafte Schaltungen kann Solarthermie auch bei niederen Temperaturen nutzbar gemacht werden.By such advantageous circuits solar thermal energy can be used even at low temperatures.

Gemäß 1b ist der Solarwärmetauscher 9 direkt vor der Wärmepumpe 3 platziert.According to 1b is the solar heat exchanger 9 directly in front of the heat pump 3 placed.

Der Solarwärmetauscher kann innerhalb oder außerhalb des Wärmerückgewinnungsgerätes platziert sein.The solar heat exchanger can be placed inside or outside the heat recovery unit.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
ErdrohrwärmetauscherErdrohrwärmetauscher
22
Luft-Luft-WärmetauscherAir-air heat exchanger
33
Luft-Wasser-WärmepumpeAir Water heatpump
44
WarmwasserspeicherHot water storage
55
Lufterwärmungair heating
66
SolarthermieSolar Thermal
77
BrauchwassererwärmungWater heating
88th
Außenluftoutside air
99
SolarwärmetauscherSolar heat exchanger
1010
solar erwärmte Außenluftsolar heated outside air
1111
Fortluft vom Luft-Luft-WärmetauscherExhaust air from the air-to-air heat exchanger
1212
Solarwärmetauscher zur ZulufterwärmungSolar heat exchanger for supply air heating
1313
Warmwasser-Speicher (oder -Puffer)Hot water storage (or buffer)

Claims (3)

Wärmerückgewinnungsgerät bestehend aus einem ersten von einer Solarflüssigkeit durchströmten Solarwärmetauscher (9) zur Vorwärmung von Außenluft (8), einem Luft-Luft-Wärmetauscher (2) zur weiteren Erwärmung der Außenluft (8) durch Abluft und einem zweiten von einer Solarflüssigkeit durchströmten Solarwärmetauscher (12) zur Zulufterwärmung.Heat recovery device consisting of a first flowed through by a solar fluid Solar heat exchanger ( 9 ) for preheating outside air ( 8th ), an air-to-air heat exchanger ( 2 ) for further heating of the outside air ( 8th ) by exhaust air and a second solar heat exchanger through which a solar fluid flows ( 12 ) for supply air heating. Wärmerückgewinnungsgerät bestehend aus einem Luft-Luft-Wärmetauscher (2) zur Erwärmung von Außenluft (8) durch Abluft, einer Wärmepumpe (3) zum weiteren Wärmeentzug der Abluft, einem von einer Solarflüssigkeit durchströmten Solarwärmetauscher (9) zur Vorwärmung der Außenluft (8) und/oder einem von einer Solarflüssigkeit durchströmten Solarwärmetauscher (12) zur Zulufterwärmung.Heat recovery unit consisting of an air-to-air heat exchanger ( 2 ) for heating outside air ( 8th ) by exhaust air, a heat pump ( 3 ) for further heat extraction of the exhaust air, a solar heat exchanger through which a solar fluid flows ( 9 ) for preheating the outside air ( 8th ) and / or a solar heat exchanger through which a solar fluid flows ( 12 ) for supply air heating. Wärmerückgewinnungsgerät nach Anspruch 2, dadurch gekennzeichnet, dass der Solarwärmetauscher (9) zur Vorwärmung von Außenluft (8) auch zur Erwärmung der Abluft (11), welche aus dem Luft-Luft-Wärmetauscher (2) zur Wärmepumpe (3) strömt, verwendet wird.Heat recovery device according to claim 2, characterized in that the solar heat exchanger ( 9 ) for preheating outside air ( 8th ) also for heating the exhaust air ( 11 ), which from the air-air heat exchanger ( 2 ) to the heat pump ( 3 ) is used.
DE10360580A 2003-12-19 2003-12-19 Heat recovery unit with solar heat exchanger Expired - Lifetime DE10360580B4 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE10360580A DE10360580B4 (en) 2003-12-19 2003-12-19 Heat recovery unit with solar heat exchanger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE10360580A DE10360580B4 (en) 2003-12-19 2003-12-19 Heat recovery unit with solar heat exchanger

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DE10360580A1 DE10360580A1 (en) 2005-07-14
DE10360580B4 true DE10360580B4 (en) 2011-08-11

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004057441B3 (en) * 2004-11-27 2006-06-22 Dorothea Reich Method for minimizing of primary energy consumption in ventilation supply system entails comparing collector temperature of solar plant and outside air temperature and preheating outside air flow if collector temperature is higher
DE102007003657A1 (en) * 2007-01-18 2008-07-31 Heinrich Welker Heat pump, has heat exchanger formed as liquid/air heat exchanger superordinated to air/liquid heat exchanger, where heat energy of solar conductor fluid of thermal solar circuit is transferred to air flowing through another heat exchanger
DE102007019748A1 (en) * 2007-04-20 2008-10-23 Kai Kowalewski Combined solar energy and geothermal energy heat generation system, uses ground-storage with insulation on three sides and open at bottom

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19544245A1 (en) * 1995-11-28 1997-06-05 Rolf Disch Building with external solar energy unit membrane on roof structure
DE10118572A1 (en) * 2001-04-06 2002-10-17 Harry Jentzsch Heating and hot water supply, for a building, uses solar energy to heat them with an energy store to hold energy during low demand and a heat pump to give heating when the energy from the sun is low

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19544245A1 (en) * 1995-11-28 1997-06-05 Rolf Disch Building with external solar energy unit membrane on roof structure
DE10118572A1 (en) * 2001-04-06 2002-10-17 Harry Jentzsch Heating and hot water supply, for a building, uses solar energy to heat them with an energy store to hold energy during low demand and a heat pump to give heating when the energy from the sun is low

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