DE10122435A1 - Regulating air humidity comprises constantly monitoring air humidity and temperature to determine absolute humidity which is then used as regulating parameter for humidity and ventilation system - Google Patents

Regulating air humidity comprises constantly monitoring air humidity and temperature to determine absolute humidity which is then used as regulating parameter for humidity and ventilation system

Info

Publication number
DE10122435A1
DE10122435A1 DE10122435A DE10122435A DE10122435A1 DE 10122435 A1 DE10122435 A1 DE 10122435A1 DE 10122435 A DE10122435 A DE 10122435A DE 10122435 A DE10122435 A DE 10122435A DE 10122435 A1 DE10122435 A1 DE 10122435A1
Authority
DE
Germany
Prior art keywords
humidity
air humidity
temperature
control
ventilation
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Withdrawn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
DE10122435A
Other languages
German (de)
Inventor
Werner Hein
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.)
Hein Werner 82467 Garmisch-Partenkirchen De
Original Assignee
Hein Werner Corp
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 Hein Werner Corp filed Critical Hein Werner Corp
Priority to DE10122435A priority Critical patent/DE10122435A1/en
Publication of DE10122435A1 publication Critical patent/DE10122435A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D22/00—Control of humidity
    • G05D22/02—Control of humidity characterised by the use of electric means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/46—Improving electric energy efficiency or saving
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/20—Humidity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/50—Air quality properties
    • F24F2110/65—Concentration of specific substances or contaminants
    • F24F2110/70—Carbon dioxide
    • 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]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Signal Processing (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

In a process to regulate air humidity, the air humidity and temperature are constantly monitored to determine the absolute humidity which is then used as a regulating parameter for humidity and ventilation systems. The system further maintains humidity and temperature within the ideal range for maximum human performance e.g. in the work place. An Independent claim is also included for an assembly to monitor air humidity, temperature, air pressure, or the presence of carbon dioxide or ozone and linked to a microprocessor with suitable software. The microprocessor regulates operation of associated ventilation and humidifier units. alternatively, calculation of the absolute air humidity may be directly effected by an optical sensor. Ventilation is regulated by reference to absolute air humidity, choosing ranges of temperature and humidity which are appropriate to the circumstances e.g. classroom, workshop, living room, storage space, cellar.

Description

Durch Erfassung der absoluten Feuchte kann die Software gemäß den Zielvorgaben eine Entfeuchtung, feuchteneutrale Belüftung, Befeuchtung wenn erwünscht, Austausch von verbrauchter und/oder schadstoffbelasteter Luft, veranlassen. Negative Ergebnisse werden eliminiert. By recording the absolute humidity, the software can be used according to Targets dehumidification, moisture-neutral ventilation, humidification if desirable, exchange of used and / or polluted air, cause. Negative results are eliminated.

Da sich die absolute Luftfeuchte aus Lufttemperatur und relativer Luftfeuchte aufschlüsselt kann allein über die gemessene Temperatur keine Aussage über den Wassergehalt in Gramm Wasser je Kilogramm Luft (Bei 20°C. ca. 1,2 m3 Luft) getroffen werden. Das gleiche gilt für einen gemessenen Wert für relative Luftfeuchte (60% relative Luftfeuchte ist bei einer Lufttemperatur von 11°C. ca. 5 Gramm Wasser je Kilogramm Luft, bei 25°C. ca. 12 Gramm Wasser je Kilogramm Luft). Im Mollier-Diagramm' ist ersichtlich, daß bei einer Steuerung über die absolute Luftfeuchtigkeit keine unerwünschten Effekte mehr auftreten. Since the absolute air humidity is broken down from air temperature and relative air humidity, no statement can be made about the water content alone in grams of water per kilogram of air (at 20 ° C. Approx. 1.2 m 3 air). The same applies to a measured value for relative air humidity (60% relative air humidity at an air temperature of 11 ° C. Approx. 5 grams of water per kilogram of air, at 25 ° C. Approx. 12 grams of water per kg of air). In the Mollier diagram 'it can be seen that there is no longer any undesirable effect when controlled by means of absolute air humidity.

Anwendungsbeispieleapplications

Lüftung in Wohnungen, Niedrigenergiehäuser, Seminar-Versammlungsräumen, Klassenzimmer, Keller Lagerräumen, Archive, Museen, usw. Ventilation in apartments, low-energy houses, seminar meeting rooms, Classrooms, basement storage rooms, archives, museums, etc.

Hier kann mittels CO2-Sensor die Belastung der Luft ermittelt werden und gelüftet werden, wenn ein unerwünschter Bereich erreicht ist. Somit wird Störung durch CO2 Belastung (Unaufmerksamkeit, Müdigkeit, usw.) vermieden und Energie gespart, da unnötiges Lüften und somit Wärmeverlust vermieden werden. Here, the CO 2 sensor can be used to determine the air pollution and to ventilate it when an undesired area is reached. In this way, disturbances caused by CO 2 pollution (inattentiveness, fatigue, etc.) are avoided and energy is saved because unnecessary ventilation and thus heat loss are avoided.

Erweiternde Ausgestaltungen, Anwendungsmöglichkeiten:
CO2, OZON-Regelung Expanding configurations, possible applications:
CO 2 , OZONE regulation

Stand der TechnikState of the art

Lüftungssteuerung beinhaltet bisher die Erfassung der Daten für relative Luftfeuchte, Temperatur, Luftdruck, Partialdruck und aller sonstigen metreologischen Messgrössen (CO2, Ozon, usw.). Die Steuerung wird dann über Temperatur, relative Luftfeuchte, usw. geführt (Patentschrift DE 32 44 170 C2). Hier ist das Mollierdiagramm die wissenschaftliche Grundlage für Luftfeuchtezustände. Up to now, ventilation control has included the acquisition of data for relative air humidity, temperature, air pressure, partial pressure and all other metrological parameters (CO 2 , ozone, etc.). The control is then carried out via temperature, relative air humidity, etc. (patent DE 32 44 170 C2). Here the Mollier diagram is the scientific basis for air humidity conditions.

Problem der bekannten TechnikProblem of the known technology

Die verschiedenen bekannten Steuerungsvarianten sind, da Sie zu wenige Parameter berücksichtigen mit positiven und negativen Wirkungsweisen behaftet.

  • 1. Eine temperaturgesteuerte Be-/Entlüftung kann laut den physikalischen Gesetzmässigkeiten sowohl Be- als auch Entfeuchten. Diese Regelung kann nicht abschätzen, ob der gewünschte Effekt eintritt, da eine Absenkung der Temperatur nicht zwangsläufig einem geringeren Wassergehalt der Luft entspricht. Siehe Mollierdiagramm.
  • 2. Eine luftfeuchtegesteuerte (relative Luftfeuchte) Be-/Entlüftung kann laut den physikalischen Gesetzmässigkeiten sowohl Be- als auch Entfeuchten. Diese Regelung kann nicht abschätzen, ob der gewünschte Effekt eintritt, da eine Absenkung der relativen Luftfeuchte nicht zwangsläufig einem geringeren Wassergehalt der Luft entspricht. Siehe Mollierdiagramm.
  • 3. Eine luftfeuchtegesteuerte (absolute Luftfeuchte) Be-/Entlüftung mit nachfolgender Temperaturpriorität, kann laut den physikalischen Gesetzmässigkeiten sowohl Be- als auch Entfeuchten. Diese Regelung kann nicht abschätzen, ob der gewünschte Effekt eintritt, da eine Absenkung der Temperatur nicht zwangsläufig einem geringeren Wassergehalt der Luft entspricht.
  • 4. Eine enthalpiegesteuerte Be-/Entlüftung, kann laut den physikalischen Gesetzmässigkeiten sowohl Be- als auch Entfeuchten. Diese Regelung kann nicht abschätzen, ob der gewünschte Effekt eintritt, da eine Absenkung der Enthalpie nicht zwangsläufig einem geringeren Wassergehalt der Luft entspricht.
The various known control variants are afflicted with positive and negative modes of action because you take too few parameters into account.
  • 1. According to the physical laws, a temperature-controlled ventilation can both humidify and dehumidify. This regulation cannot estimate whether the desired effect occurs, since a lowering of the temperature does not necessarily correspond to a lower water content in the air. See Mollier diagram.
  • 2. According to the laws of physics, air humidity controlled (relative air humidity) ventilation can both humidify and dehumidify. This regulation cannot estimate whether the desired effect occurs, since a lowering of the relative air humidity does not necessarily correspond to a lower water content of the air. See Mollier diagram.
  • 3. An air humidity controlled (absolute air humidity) ventilation with subsequent temperature priority can, according to the physical laws, both humidification and dehumidification. This regulation cannot estimate whether the desired effect occurs, since a lowering of the temperature does not necessarily correspond to a lower water content in the air.
  • 4. An enthalpy-controlled ventilation can, according to the physical laws, both humidification and dehumidification. This regulation cannot estimate whether the desired effect occurs, since a lower enthalpy does not necessarily correspond to a lower water content in the air.

Die unter 1.-3. benannten Steuerungen können keine Entfeuchtung bei höheren Werten, als dem ermittelten Basiswert erreichen. Ferner können sie keine Lüftung mit höheren Werten erreichen, um Energie aus der Umluft zu gewinnen. Eine Belüftung erfolgt größtenteils auf Kosten von Energieverlusten. The under 1.-3. named controls cannot dehumidify higher values than the determined base value. Furthermore, they can do not achieve ventilation with higher values in order to supply energy from the circulating air win. Ventilation is largely at the expense of energy loss.

Claims (3)

1. Oberbegriff 1. 1.1 Verfahren gekennzeichnet durch die Erfassung von Luftfeuchte und Temperatur, zur Berechnung der absoluten Luftfeuchte, welche als Regelgrösse Verwendung findet, um Gerätschaften zur Be- und Entlüftung, Befeuchtung und Entfeuchtung energieoptimiert zu steuern. Ziel ist, ein gesundes und behagliches Raumklima zu schaffen und Feuchteschäden zu vermeiden, 2. 1.2 Verfahren gekennzeichnet dadurch dass die Steuerung/Regelung nach individueller Vorgabe eines von der Steuerung einzuhaltenden Behaglichkeitsbereiches erfolgt. Referenz zur Festlegung dieses Bereiches ist z. B.: Richtlinie Arbeitsstätten. 1. General term 1.1.1 Method characterized by the detection of air humidity and temperature, for the calculation of the absolute air humidity, which is used as a control variable to control devices for ventilation, humidification and dehumidification in an energy-optimized manner. The aim is to create a healthy and comfortable indoor climate and to avoid moisture damage, 2. 1.2 Method characterized in that the control / regulation takes place according to the individual specification of a comfort zone to be observed by the control. Reference for defining this area is e.g. E.g .: workplace guidelines. 2. Vorrichtung gekennzeichnet durch die Verwendung Messfühlern zur Erfassung von relative Luftfeuchte, Temperatur und optional Luftdruck, CO2, Ozon und Verarbeitung der Messdaten zur Berechnung der absoluten Luftfeuchte in einer Steuereinheit mit einem Mikroprozessor mittels hierfür erstellter Software die Steuerung von nachgeschalteten Lüftungs- und Befeuchtungsanlagen erfolgt.
Die Berechnung der absoluten Luftfeuchte kann durch die direkte Erfassung mittels eines optischen Fühlers ersetzt werden. 2.Device characterized by the use of sensors for recording relative air humidity, temperature and optional air pressure, CO 2 , ozone and processing the measurement data for calculating the absolute air humidity in a control unit with a microprocessor using software created for this purpose to control downstream ventilation and humidification systems he follows.
The calculation of the absolute air humidity can be replaced by direct detection using an optical sensor. 3. Anspruch auf Oberbegriff ist dadurch gekennzeichnet, 1. 3.1 dass die Belüftung über die absolute Luftfeuchtigkeit geführt wird
und hier nicht einzelne Obergrenzen den Regelungszyklus vorgeben, sondern ein frei definierbarer
Behaglichkeitsbereich für Arbeitsräume, Wohnräume, Produktionsstätten, Lagerräume, Keller. Dieser Bereich ist jeweils eingegrenzt durch Temperatur- und Luftfeuchte Ober- und Untergrenzen, 2. 3.2 dadurch gekennzeichnet dass mit einer mikroprozessorgesteuerten elektronischen Ansteuerung, welche von einer dafür entwickelten Software die gewünschten Zustände festlegt, unter Verwendung von Fühlern für Luftfeuchte, Temperatur eine Auswertung der ermittelten Ist-Werte durch die Software und selbst regulierende Ansteuerung von Lüftungsanlagen, Befeuchter, Entfeuchter, erreicht wird 3. 3.3 dadurch gekennzeichnet dass mit einer mikroprozessorgesteuerten elektronischen Ansteuerung, welche von einer dafür entwickelten Software die gewünschten Zustände festlegt, unter Verwendung von Fühlern für CO2 eine Auswertung der ermittelten Ist-Werte durch die Software und selbst regulierende Ansteuerung von Lüftungsanlagen, Befeuchter, Entfeuchter, erreicht wird 4. 3.4 dadurch gekennzeichnet dass mit einer mikroprozessorgesteuerten elektronischen Ansteuerung, welche von einer dafür entwickelten Software die gewünschten Zustände festlegt, unter Verwendung von Fühlern für Ozon die Auswertung der ermittelten Ist-Werte durch die Software und selbst regulierende Ansteuerung von Lüftungsanlagen, Befeuchter, Entfeuchter, erreicht wird 5. 3.5 dadurch gekennzeichnet, dass energetisch höherwertigere Zuluft ermittelt und die Zuführung gesteuert wird 6. 3.6 dadurch gekennzeichnet, dass absolut trockenere Zuluft ermittelt und die Zuführung gesteuert wird. 3. Claim to the generic term is characterized in that 1. 3.1 that the ventilation is carried out over the absolute humidity
and here do not specify individual upper limits for the control cycle, but a freely definable one
Comfort area for work rooms, living rooms, production facilities, storage rooms, cellars. This range is limited by temperature and humidity upper and lower limits, 2. 3.2 characterized in that with a microprocessor-controlled electronic control, which defines the desired conditions using software developed for this purpose, using sensors for air humidity, temperature, an evaluation of the actual values determined by the software and self-regulating control of ventilation systems, humidifiers, Dehumidifier 3. 3.3 characterized in that with a microprocessor-controlled electronic control, which defines the desired conditions by means of software developed for this purpose, using sensors for CO 2, an evaluation of the actual values determined by the software and self-regulating control of ventilation systems, humidifiers, dehumidifiers , is reached 4. 3.4 characterized in that with a microprocessor-controlled electronic control, which defines the desired conditions using software developed for this purpose, using sensors for ozone, the evaluation of the determined actual values by the software and self-regulating control of ventilation systems, humidifiers, dehumidifiers, is achieved 5. 3.5 characterized in that energetically higher quality supply air is determined and the supply is controlled 6. 3.6 characterized in that absolutely drier supply air is determined and the supply is controlled.
DE10122435A 2001-05-09 2001-05-09 Regulating air humidity comprises constantly monitoring air humidity and temperature to determine absolute humidity which is then used as regulating parameter for humidity and ventilation system Withdrawn DE10122435A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE10122435A DE10122435A1 (en) 2001-05-09 2001-05-09 Regulating air humidity comprises constantly monitoring air humidity and temperature to determine absolute humidity which is then used as regulating parameter for humidity and ventilation system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE10122435A DE10122435A1 (en) 2001-05-09 2001-05-09 Regulating air humidity comprises constantly monitoring air humidity and temperature to determine absolute humidity which is then used as regulating parameter for humidity and ventilation system

Publications (1)

Publication Number Publication Date
DE10122435A1 true DE10122435A1 (en) 2003-01-30

Family

ID=7684097

Family Applications (1)

Application Number Title Priority Date Filing Date
DE10122435A Withdrawn DE10122435A1 (en) 2001-05-09 2001-05-09 Regulating air humidity comprises constantly monitoring air humidity and temperature to determine absolute humidity which is then used as regulating parameter for humidity and ventilation system

Country Status (1)

Country Link
DE (1) DE10122435A1 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2400457A (en) * 2003-04-05 2004-10-13 Ebac Ltd Dehumidifier control system
DE102006023181A1 (en) * 2006-05-17 2007-11-22 Siemens Ag Sensor arrangement for measuring a subjective temperature
DE102011001158A1 (en) 2011-03-09 2012-09-13 Hochschule Fulda Method for determination of control variables for influencing indoor climate in building and for achieving or maintaining predetermined climate, involves detecting actual indoor climate data by indoor climate sensor
EP2642213A1 (en) 2012-03-21 2013-09-25 REHAU AG + Co Method for controlling a ventilation system of at least one room and corresponding ventilation system
EP2136147A3 (en) * 2008-06-19 2015-10-07 Fachhochschule Dortmund Method and device for regulating the temperature, humidity and carbon dioxide component of the air in rooms
CN105526678A (en) * 2015-12-30 2016-04-27 中建三局智能技术有限公司 Moisture content control method for constant temperature and humidity combined air conditioner
EP3098528A1 (en) * 2015-04-29 2016-11-30 eGain Sweden AB Method for determining ventilation rate within an indoor environment
EP2947396B1 (en) 2014-05-20 2018-10-17 Schwille-Elektronik Produktions- und Vertriebs GmbH Method for ventilating a room and ventilation system for same
DE102021202466A1 (en) 2021-03-15 2022-09-15 Robert Bosch Gesellschaft mit beschränkter Haftung Method and device for monitoring ventilation

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2400457A (en) * 2003-04-05 2004-10-13 Ebac Ltd Dehumidifier control system
GB2400457B (en) * 2003-04-05 2006-10-11 Ebac Ltd Dehumidifier control system
DE102006023181A1 (en) * 2006-05-17 2007-11-22 Siemens Ag Sensor arrangement for measuring a subjective temperature
EP2136147A3 (en) * 2008-06-19 2015-10-07 Fachhochschule Dortmund Method and device for regulating the temperature, humidity and carbon dioxide component of the air in rooms
DE102011001158A1 (en) 2011-03-09 2012-09-13 Hochschule Fulda Method for determination of control variables for influencing indoor climate in building and for achieving or maintaining predetermined climate, involves detecting actual indoor climate data by indoor climate sensor
EP2642213A1 (en) 2012-03-21 2013-09-25 REHAU AG + Co Method for controlling a ventilation system of at least one room and corresponding ventilation system
DE102012102377A1 (en) 2012-03-21 2013-09-26 Rehau Ag + Co Method for controlling a ventilation system of at least one room and corresponding ventilation system
EP2947396B1 (en) 2014-05-20 2018-10-17 Schwille-Elektronik Produktions- und Vertriebs GmbH Method for ventilating a room and ventilation system for same
EP3098528A1 (en) * 2015-04-29 2016-11-30 eGain Sweden AB Method for determining ventilation rate within an indoor environment
CN105526678A (en) * 2015-12-30 2016-04-27 中建三局智能技术有限公司 Moisture content control method for constant temperature and humidity combined air conditioner
DE102021202466A1 (en) 2021-03-15 2022-09-15 Robert Bosch Gesellschaft mit beschränkter Haftung Method and device for monitoring ventilation

Similar Documents

Publication Publication Date Title
DE102005057454B4 (en) Airtight settlement agreement
EP1878979B1 (en) Method and device for controlled ventilation against mildew
DE4142122A1 (en) METHOD AND VENTILATION SYSTEM FOR CONTROLLING THE INTERIOR CLIMATE OF A ROOM
DE10122435A1 (en) Regulating air humidity comprises constantly monitoring air humidity and temperature to determine absolute humidity which is then used as regulating parameter for humidity and ventilation system
DE112009000227T5 (en) Air conditioning control system
CN107816774A (en) VMC and its control method, fresh air conditioner system
Dougan et al. CO 2-Based Demand Control Ventilation.
EP2136147B1 (en) Method and device for regulating the temperature, humidity and carbon dioxide component of the air in rooms
Haghighat et al. Iaq and energy‐management by demand controlled ventilation
Susa et al. Automatic room humidifier and dehumidifier controller using Arduino Uno
CN205878415U (en) Indoor air quality optimizing system
KR20190089313A (en) Thermo-hygrostat
Kabrein et al. Improving indoor air quality and thermal comfort in office building by using combination filters
Dhakulkar et al. An experimental analysis of direct evaporative cooler by changing its cooling pads
DE102008050444A1 (en) Method for ventilating a room
Berglund et al. A ventilation and odor test facility
JPS60232445A (en) Air conditioner in underground space for residence
Bhatia HVAC–Guide to Demand Control Ventilation
Volkov Studying the issue of combating the decline in cognitive functions by controlling the parameters of the microclimate
KR940002643B1 (en) Interior atmosphere control system
Kumar et al. Arduino UNO Based Smart Humidifier & Dehumidifier
CA et al. Indoor Air Quality in Office Buildings–experimental investigation
Pramaningsih et al. Indoor Air Quality of Physical and Microbiological in Universitas Muhammadiyah Kalimantan Timur, Indonesia
Silva Junior et al. On the development of a thermal comfort control for classrooms conditioned by split-type systems
Amin et al. Optimization of Indoor Air Quality towards the Control of Mould Formation by Taguchi Method.

Legal Events

Date Code Title Description
ON Later submitted papers
8127 New person/name/address of the applicant

Owner name: HEIN, WERNER, 82467 GARMISCH-PARTENKIRCHEN, DE

8110 Request for examination paragraph 44
8139 Disposal/non-payment of the annual fee