DE19906087A1 - Function testing device for solar installation involves collectors which discharge automatically into collection container during risk of overheating or frost - Google Patents

Function testing device for solar installation involves collectors which discharge automatically into collection container during risk of overheating or frost

Info

Publication number
DE19906087A1
DE19906087A1 DE19906087A DE19906087A DE19906087A1 DE 19906087 A1 DE19906087 A1 DE 19906087A1 DE 19906087 A DE19906087 A DE 19906087A DE 19906087 A DE19906087 A DE 19906087A DE 19906087 A1 DE19906087 A1 DE 19906087A1
Authority
DE
Germany
Prior art keywords
collectors
overheating
frost
collection container
switch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE19906087A
Other languages
German (de)
Inventor
Gerold Wenisch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bosch Thermotechnik GmbH
Original Assignee
Buderus Heiztechnik GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Buderus Heiztechnik GmbH filed Critical Buderus Heiztechnik GmbH
Priority to DE19906087A priority Critical patent/DE19906087A1/en
Publication of DE19906087A1 publication Critical patent/DE19906087A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D11/00—Central heating systems using heat accumulated in storage masses
    • F24D11/002—Central heating systems using heat accumulated in storage masses water heating system
    • F24D11/003—Central heating systems using heat accumulated in storage masses water heating system combined with solar energy
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S40/00—Safety or protection arrangements of solar heat collectors; Preventing malfunction of solar heat collectors
    • F24S40/60—Arrangements for draining the working fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S40/00—Safety or protection arrangements of solar heat collectors; Preventing malfunction of solar heat collectors
    • F24S40/90—Arrangements for testing solar heat collectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S40/00—Safety or protection arrangements of solar heat collectors; Preventing malfunction of solar heat collectors
    • F24S40/50—Preventing overheating or overpressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S40/00—Safety or protection arrangements of solar heat collectors; Preventing malfunction of solar heat collectors
    • F24S40/70—Preventing freezing
    • 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
    • Y02B10/20—Solar thermal
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)

Abstract

For function testing of a solar installation, the device involves the collectors (10) during periods of overheating or frost risk discharging automatically into a collection container (40). During the emptying phase by-passing the collectors, a flow component (50) is used, permitting a circulation only in the overheating/frost-free area in a connecting conduit (14) from the collector backflow (11) to the collector forward flow (12). A separate hand-operated switch (34) for function testing in the regulating apparatus (35) acts on the flow component (50) and the circulating pump (30). On this switch acts a time switch for the automatic switch-off after completion of the function test.

Description

Die Erfindung betrifft eine Einrichtung nach dem Oberbegriff des Patentanspruches 1.The invention relates to a device according to the preamble of patent claim 1.

Der DE 196 54 037 C1 ist eine Solaranlage zu entnehmen, deren Kollektoren sich bei Überhitzungs- oder Frostgefahr automatisch in einen Sammelbehälter entleeren. Während man bei dauerhaft gefüllten Anlagen im Sommer zur Vermeidung einer Dampfbildung einen Überhitzungsschutz und im Winter zur Vermeidung eines Einfrierens einen Frost­ schutz vorsehen muß, bestehen bei einer solchen Anlage keine Probleme, da die ge­ fährdeten Anlagenbereiche während der kritischen Phasen entleert sind. Die Anlage ist nur dann voll befüllt, wenn keine Überhitzungs- oder Frostgefahr besteht, so daß immer die ausreichende Sicherheit des Systems gewährleistet ist.DE 196 54 037 C1 shows a solar system, the collectors of which are Empty the risk of overheating or frost automatically into a collection container. While with permanently filled systems in summer to avoid the formation of steam protection against overheating and frost in winter to prevent freezing protection must be provided, there are no problems with such a system, since the ge plant areas at risk during the critical phases. The facility is only fully filled when there is no risk of overheating or frost, so that always sufficient system security is guaranteed.

Bei Anlagen dieser Art kann es sein, daß nach der Montage im Hochsommer oder auch allgemein während der Entleerungsphase ein Inbetriebnahme- bzw. Funktionstest erfor­ derlich ist. Dem steht aber die Sicherheitsschaltung der Anlage entgegen, so daß ein solcher Test nicht ohne weiteres möglich ist. Würde man die Sicherheitsschaltung für Testzwecke einfach überbrücken, dann würde Wasser in die überhitzten Kollektoren ge­ fördert. Das könnte zu einer Dampfbildung mit Dampfschlägen führen. Um dennoch einen Testbetrieb durchführen zu können, hat man deshalb die Kollektoren abgedeckt, um eine Betriebsbereitschaft zu stimulieren. Das ist aber mit viel Aufwand verbunden und aus Sicherheitsgründen nicht immer zu empfehlen.In systems of this type, it may be that after assembly in midsummer or Generally a commissioning or function test is required during the emptying phase is such. This is opposed to the safety circuit of the system, so that a such test is not readily possible. Would you consider the safety circuit for Simply bypass test purposes, then water would be put into the overheated collectors promotes. This could lead to steam formation with steam strikes. To still one To be able to carry out test operation, the collectors were therefore covered in order to Stimulate operational readiness. But that is a lot of work and out Not always recommended for security reasons.

Der Erfindung liegt die Aufgabe zugrunde, eine Einrichtung zu schaffen, mit der eine Funktionsprüfung (Testbetrieb) auch in den Zeiten möglich ist, in denen die Anlage aus Sicherheitsgründen entleert ist.The invention has for its object to provide a device with which Functional test (test operation) is also possible at times when the system is off Security reasons is emptied.

Die erfindungsgemäße Einrichtung besitzt die im Patentanspruch 1 genannten Merkmale.The device according to the invention has the features mentioned in claim 1.

Es wird nicht die Sicherheitsschaltung einfach überbrückt. Es wird auch nicht durch auf­ wendige Maßnahmen eine Betriebsbereitschaft vorgetäuscht. Statt dessen wird eine Mög­ lichkeit geschaffen, während der Entleerungsphase eine Zirkulation unter Umgehung der Kollektoren nur durch den frostfreien Anlagenbereich zu bewirken. Das geschieht durch ein für die Funktionsprüfung (Testbetrieb) zu öffnendes Strömungselement in Form eines 2- oder 3-Wegeventils in einer Verbindungsleitung vom Kollektorrücklauf zum Kollektorvorlauf. Als Verbindungsleitung kann dabei die schon vorhandene Entleerleitung vom Kollek­ torrücklauf zum Sammelbehälter benutzt werden, so daß außer dem Strömungselement keine weiteren Bauteile benötigt werden.The safety circuit is not simply bridged. It won't go through on either maneuverable measures simulated operational readiness. Instead, a poss created a circulation, bypassing the To effect collectors only through the frost-free system area. That happens through a flow element to be opened for the functional test (test operation) in the form of a 2- or 3-way valve in a connecting line from the collector return to the collector flow. The existing drain line from the collector can be used as a connecting line gate return to the collection container are used, so that in addition to the flow element no further components are required.

Zum Betreiben der erfindungsgemäßen Einrichtung ist im Regelgerät der Anlage ein von Hand zu betätigender auf das Strömungselement und die Umwälzpumpe einwirkender Schalter anzuordnen. Mit diesem kann nach Belieben ein Betrieb im internen Kreis in Gang gesetzt und wieder abgeschaltet werden. Man könnte dem Schalter auch einen Zeitschalter für ein automatisches Abschalten nach der Funktionsprüfung zuordnen.To operate the device according to the invention, one of Manually operated to act on the flow element and the circulation pump Arrange switches. With this, operation in the internal circuit can be started at will set and switched off again. You could also switch the switch to a timer for an automatic shutdown after the function test.

Die Zeichnung stellt in einer einzigen Figur eine Solaranlage als Ausführungsbeispiel der erfindungsgemäßen Einrichtung dar.The drawing shows a solar system as an embodiment of the in a single figure device according to the invention.

Die Anlage besitzt einen oder mehrere Solarkollektoren 10, die durch einen Kollektorrück­ lauf 11 und einen Kollektorvorlauf 12 mit einem Solarspeicher 20 verbunden sind. In diesem sitzt ein Wärmeaustauscher 21 und er besitzt einen Einlauf 22 und einen Auslauf 23 für das aufzuheizende Wasser. Eine Umwälzpumpe 30 wird in Abhängigkeit von ge­ messenen Temperaturen durch eine Kollektorfühler 31 und einen Speicherfühler 32 über ein Regelgerät 33 geschaltet. Bei Überhitzungs- und Frostgefahr entleert sich der Inhalt der oberen Anlagenbereiche in einen Sammelbehälter 40, der mit einem Druckausgleichsventil 41 versehen ist, und zwar sowohl über den Kollektorvorlauf 12 als auch über den Kollektorrücklauf 11 und eine zusätzliche Verbindungsleitung (Entleerungsleitung) 14. Für eine Funktionsprüfung (Testbetrieb) wird über einen Schalter 34 am Regelgerät 33 ein Strömungselement 50 so geschaltet, daß im überhitzungs-/frostfreien Bereich eine Strömung vom Kollektorrücklauf 11 zum Kollektorvorlauf 12 möglich ist. Unter Umgehung der Kollektoren 10 ist jetzt in einem internen Kreislauf 60 eine Prüfung möglich.The system has one or more solar collectors 10 , which run through a collector return 11 and a collector flow 12 are connected to a solar storage 20 . In this sits a heat exchanger 21 and it has an inlet 22 and an outlet 23 for the water to be heated. A circulation pump 30 is switched as a function of ge measured temperatures by a collector sensor 31 and a storage sensor 32 via a control device 33 . If there is a risk of overheating and frost, the contents of the upper system areas are emptied into a collecting container 40 , which is provided with a pressure compensation valve 41 , both via the collector flow 12 and via the collector return 11 and an additional connecting line (drain line) 14 . For a functional test (test operation), a flow element 50 is switched via a switch 34 on the control device 33 so that a flow from the collector return 11 to the collector feed 12 is possible in the overheating / frost-free area. Bypassing the collectors 10 , a test is now possible in an internal circuit 60 .

Claims (3)

1. Einrichtung zur Funktionsprüfung einer Solaranlage, deren Kollektoren (10) sich bei Überhitzungs- oder Frostgefahr automatisch in einen Sammelbehälter (40) entleeren, gekennzeichnet durch ein während der Entleerungsphase unter Umgehung der Kollektoren (10) eine Zirkulation nur im überhitzungs-/frostfreien Anlagenbereich zulassendes Strömungselement (50) in einer Verbindungsleitung (14) vom Kollektorrücklauf (11) zum Kollektorvorlauf (12).1.Function for testing the function of a solar system, the collectors ( 10 ) of which automatically drain into a collection container ( 40 ) if there is a risk of overheating or frost, characterized by circulation only in the overheating / frost-free area of the system while bypassing the collectors ( 10 ) permitting flow element ( 50 ) in a connecting line ( 14 ) from the collector return ( 11 ) to the collector flow ( 12 ). 2. Einrichtung nach Anspruch 1, gekennzeichnet durch einen gesonderten, von Hand zu betätigenden, auf das Strömungs­ element (50) und die Umwälzpumpe (30) in der Anlage einwirkenden Schalter (34) für die Funktionsprüfung im Regelgerät (33).2. Device according to claim 1, characterized by a separate, manually operated, on the flow element ( 50 ) and the circulation pump ( 30 ) acting in the system switch ( 34 ) for the functional test in the control device ( 33 ). 3. Einrichtung nach Anspruch 2, gekennzeichnet durch einen dem Schalter (34) zugeordneten Zeitschalter für ein automa­ tisches Abschalten nach Abschluß der Funktionsprüfung.3. Device according to claim 2, characterized by a switch ( 34 ) assigned to a timer for an automatic shutdown after completion of the functional test.
DE19906087A 1999-02-13 1999-02-13 Function testing device for solar installation involves collectors which discharge automatically into collection container during risk of overheating or frost Withdrawn DE19906087A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19906087A DE19906087A1 (en) 1999-02-13 1999-02-13 Function testing device for solar installation involves collectors which discharge automatically into collection container during risk of overheating or frost

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19906087A DE19906087A1 (en) 1999-02-13 1999-02-13 Function testing device for solar installation involves collectors which discharge automatically into collection container during risk of overheating or frost

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DE19906087A1 true DE19906087A1 (en) 2000-08-17

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Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004029522A2 (en) * 2002-09-27 2004-04-08 Adam Skorut Method of effecting the safe transfer of solar energy and a low-pressure equipment system for the transport of solar energy
WO2004092660A1 (en) * 2003-04-16 2004-10-28 Konetsu, S.L. Flat sun collector system
WO2005059445A1 (en) * 2003-12-12 2005-06-30 Vögelin Gmbh Solar installation
WO2011017599A1 (en) * 2009-08-06 2011-02-10 Echogen Power Systems, Inc. Solar collector with expandable fluid mass management system
WO2013011039A1 (en) * 2011-07-19 2013-01-24 Thomere Finance System for producing hot water using water-filled solar thermal collectors, in which a single circuit connects a hot water tank and the collectors, including an overheat protection device
US8613195B2 (en) 2009-09-17 2013-12-24 Echogen Power Systems, Llc Heat engine and heat to electricity systems and methods with working fluid mass management control
US8783034B2 (en) 2011-11-07 2014-07-22 Echogen Power Systems, Llc Hot day cycle
FR3001792A1 (en) * 2013-02-06 2014-08-08 Eklor METHOD FOR AUTOMATICALLY CHECKING THE DRAINAGE OF A SELF-DRAINABLE THERMAL SOLAR INSTALLATION AND EQUIPPED INSTALLATION FOR IMPLEMENTING SUCH A METHOD
US8813497B2 (en) 2009-09-17 2014-08-26 Echogen Power Systems, Llc Automated mass management control
US8857186B2 (en) 2010-11-29 2014-10-14 Echogen Power Systems, L.L.C. Heat engine cycles for high ambient conditions
US8869531B2 (en) 2009-09-17 2014-10-28 Echogen Power Systems, Llc Heat engines with cascade cycles
US9014791B2 (en) 2009-04-17 2015-04-21 Echogen Power Systems, Llc System and method for managing thermal issues in gas turbine engines
US9062898B2 (en) 2011-10-03 2015-06-23 Echogen Power Systems, Llc Carbon dioxide refrigeration cycle
US9091278B2 (en) 2012-08-20 2015-07-28 Echogen Power Systems, Llc Supercritical working fluid circuit with a turbo pump and a start pump in series configuration
US9118226B2 (en) 2012-10-12 2015-08-25 Echogen Power Systems, Llc Heat engine system with a supercritical working fluid and processes thereof
US9341084B2 (en) 2012-10-12 2016-05-17 Echogen Power Systems, Llc Supercritical carbon dioxide power cycle for waste heat recovery
US9410449B2 (en) 2010-11-29 2016-08-09 Echogen Power Systems, Llc Driven starter pump and start sequence
US9638065B2 (en) 2013-01-28 2017-05-02 Echogen Power Systems, Llc Methods for reducing wear on components of a heat engine system at startup
US9752460B2 (en) 2013-01-28 2017-09-05 Echogen Power Systems, Llc Process for controlling a power turbine throttle valve during a supercritical carbon dioxide rankine cycle
US10934895B2 (en) 2013-03-04 2021-03-02 Echogen Power Systems, Llc Heat engine systems with high net power supercritical carbon dioxide circuits
US11187112B2 (en) 2018-06-27 2021-11-30 Echogen Power Systems Llc Systems and methods for generating electricity via a pumped thermal energy storage system
US11293309B2 (en) 2014-11-03 2022-04-05 Echogen Power Systems, Llc Active thrust management of a turbopump within a supercritical working fluid circuit in a heat engine system
US11435120B2 (en) 2020-05-05 2022-09-06 Echogen Power Systems (Delaware), Inc. Split expansion heat pump cycle
CN115325713A (en) * 2022-10-17 2022-11-11 山东旭扬新能源有限公司 Sealing test device for water tank inner container of solar water heater
US11629638B2 (en) 2020-12-09 2023-04-18 Supercritical Storage Company, Inc. Three reservoir electric thermal energy storage system

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004029522A3 (en) * 2002-09-27 2004-07-08 Adam Skorut Method of effecting the safe transfer of solar energy and a low-pressure equipment system for the transport of solar energy
WO2004029522A2 (en) * 2002-09-27 2004-04-08 Adam Skorut Method of effecting the safe transfer of solar energy and a low-pressure equipment system for the transport of solar energy
WO2004092660A1 (en) * 2003-04-16 2004-10-28 Konetsu, S.L. Flat sun collector system
ES2224844A1 (en) * 2003-04-16 2005-03-01 Konetsu, S.L. Flat sun collector system
WO2005059445A1 (en) * 2003-12-12 2005-06-30 Vögelin Gmbh Solar installation
US9014791B2 (en) 2009-04-17 2015-04-21 Echogen Power Systems, Llc System and method for managing thermal issues in gas turbine engines
WO2011017599A1 (en) * 2009-08-06 2011-02-10 Echogen Power Systems, Inc. Solar collector with expandable fluid mass management system
US8613195B2 (en) 2009-09-17 2013-12-24 Echogen Power Systems, Llc Heat engine and heat to electricity systems and methods with working fluid mass management control
US9863282B2 (en) 2009-09-17 2018-01-09 Echogen Power System, LLC Automated mass management control
US9458738B2 (en) 2009-09-17 2016-10-04 Echogen Power Systems, Llc Heat engine and heat to electricity systems and methods with working fluid mass management control
US8813497B2 (en) 2009-09-17 2014-08-26 Echogen Power Systems, Llc Automated mass management control
US8869531B2 (en) 2009-09-17 2014-10-28 Echogen Power Systems, Llc Heat engines with cascade cycles
US9410449B2 (en) 2010-11-29 2016-08-09 Echogen Power Systems, Llc Driven starter pump and start sequence
US8857186B2 (en) 2010-11-29 2014-10-14 Echogen Power Systems, L.L.C. Heat engine cycles for high ambient conditions
EP2947393A1 (en) * 2011-07-19 2015-11-25 Thomere Finance Circuit for protection against the effects of overheating in a hot-water production system, and corresponding hot-water production system
FR2978235A1 (en) * 2011-07-19 2013-01-25 Thomere Finance SYSTEM FOR PRODUCING SANITARY HOT WATER USING WATER THERMAL SOLAR SENSORS IN WHICH THE SAME CIRCUIT CONNECTS A HOT WATER BALL AND THE SENSORS, INCLUDING A DEVICE FOR PROTECTION AGAINST OVERHEATING.
WO2013011039A1 (en) * 2011-07-19 2013-01-24 Thomere Finance System for producing hot water using water-filled solar thermal collectors, in which a single circuit connects a hot water tank and the collectors, including an overheat protection device
US9062898B2 (en) 2011-10-03 2015-06-23 Echogen Power Systems, Llc Carbon dioxide refrigeration cycle
US8783034B2 (en) 2011-11-07 2014-07-22 Echogen Power Systems, Llc Hot day cycle
US9091278B2 (en) 2012-08-20 2015-07-28 Echogen Power Systems, Llc Supercritical working fluid circuit with a turbo pump and a start pump in series configuration
US9341084B2 (en) 2012-10-12 2016-05-17 Echogen Power Systems, Llc Supercritical carbon dioxide power cycle for waste heat recovery
US9118226B2 (en) 2012-10-12 2015-08-25 Echogen Power Systems, Llc Heat engine system with a supercritical working fluid and processes thereof
US9752460B2 (en) 2013-01-28 2017-09-05 Echogen Power Systems, Llc Process for controlling a power turbine throttle valve during a supercritical carbon dioxide rankine cycle
US9638065B2 (en) 2013-01-28 2017-05-02 Echogen Power Systems, Llc Methods for reducing wear on components of a heat engine system at startup
EP2765367A1 (en) * 2013-02-06 2014-08-13 Eklor Method for automatically controlling the draining of a self-draining thermal solar plant and plant fitted in order to implement such a method
FR3001792A1 (en) * 2013-02-06 2014-08-08 Eklor METHOD FOR AUTOMATICALLY CHECKING THE DRAINAGE OF A SELF-DRAINABLE THERMAL SOLAR INSTALLATION AND EQUIPPED INSTALLATION FOR IMPLEMENTING SUCH A METHOD
US10934895B2 (en) 2013-03-04 2021-03-02 Echogen Power Systems, Llc Heat engine systems with high net power supercritical carbon dioxide circuits
US11293309B2 (en) 2014-11-03 2022-04-05 Echogen Power Systems, Llc Active thrust management of a turbopump within a supercritical working fluid circuit in a heat engine system
US11187112B2 (en) 2018-06-27 2021-11-30 Echogen Power Systems Llc Systems and methods for generating electricity via a pumped thermal energy storage system
US11435120B2 (en) 2020-05-05 2022-09-06 Echogen Power Systems (Delaware), Inc. Split expansion heat pump cycle
US11629638B2 (en) 2020-12-09 2023-04-18 Supercritical Storage Company, Inc. Three reservoir electric thermal energy storage system
CN115325713A (en) * 2022-10-17 2022-11-11 山东旭扬新能源有限公司 Sealing test device for water tank inner container of solar water heater
CN115325713B (en) * 2022-10-17 2023-01-24 山东旭扬新能源有限公司 Sealing test device for water tank inner container of solar water heater

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