GB2524713A - Efficient apparatus for drying rooms within a building - Google Patents

Efficient apparatus for drying rooms within a building Download PDF

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Publication number
GB2524713A
GB2524713A GB1401021.9A GB201401021A GB2524713A GB 2524713 A GB2524713 A GB 2524713A GB 201401021 A GB201401021 A GB 201401021A GB 2524713 A GB2524713 A GB 2524713A
Authority
GB
United Kingdom
Prior art keywords
airflow
internal
temperature
room
heat recovery
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Withdrawn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
GB1401021.9A
Other versions
GB201401021D0 (en
Inventor
James Wilkes
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1401021.9A priority Critical patent/GB2524713A/en
Publication of GB201401021D0 publication Critical patent/GB201401021D0/en
Publication of GB2524713A publication Critical patent/GB2524713A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • F24F11/63—Electronic processing
    • F24F11/65—Electronic processing for selecting an operating mode
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/70—Drying or keeping dry, e.g. by air vents
    • E04B1/7069—Drying or keeping dry, e.g. by air vents by ventilating
    • 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
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F3/147—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification with both heat and humidity transfer between supplied and exhausted air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/02—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure
    • F26B21/022—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure with provisions for changing the drying gas flow pattern, e.g. by reversing gas flow, by moving the materials or objects through subsequent compartments, at least two of which have a different direction of gas flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/06—Controlling, e.g. regulating, parameters of gas supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/06—Controlling, e.g. regulating, parameters of gas supply
    • F26B21/08—Humidity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/06—Controlling, e.g. regulating, parameters of gas supply
    • F26B21/10—Temperature; Pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/06—Controlling, e.g. regulating, parameters of gas supply
    • F26B21/12—Velocity of flow; Quantity of flow, e.g. by varying fan speed, by modifying cross flow area
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
    • F26B3/04—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour circulating over or surrounding the materials or objects to be dried
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
    • F26B9/02—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in buildings
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/70—Drying or keeping dry, e.g. by air vents
    • E04B1/7015—Drying or keeping dry, e.g. by air vents by heating the ambient air
    • 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
    • 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
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Fuzzy Systems (AREA)
  • Architecture (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

A method for drying properties after flooding, i.e. damp or water-logged rooms, with an airflow system bringing dry air from outside 6 and venting moist air 5 via a heat recovery unit 4. The system utilises temperature and humidity sensors 1, 3 both inside and outside the room combined with an electronic processor 2 to control the airflow system. The electronic system continually monitors the internal and external sensors ensuring that the most efficient extraction of water is achieved by modulating the rate of airflow through the heat recovery unit. The system may include a heater unit 9 which can be switched on or off to increase the temperature of the room. Additionally the system has multiple operating modes to meet various user requirements, e.g. speed dry, quiet or eco modes. Parameters, such as maximum internal temperature, are configurable in the electronic processor and the system may be set to automatically shut off once the internal humidity reduction rate reaches a pre-defined threshold.

Description

Efficient apparatus for drying rooms within a building This invention relates to the drying of rooms within a building such as those damaged by floods.
Presently rooms are usually dried using one or more of the following methods: refrigerant dehumidifiers, desiccant drying, open venting and heating followed by venting.
Refrigerant dehumidifiers and desiccant driers only operate at their maximum efficiency when room temperatures and relative humidity levels are within specific parameters. 28-32 degrees Celsius and over 90% relative humidity would be typical. In practice these levels are rarely achieved meaning both methods often operate at way below their optimum efficiency, extending drying time and consuming considerably more energy per litre of water extracted.
Open venting can be a simple and highly efficient way of drying rooms, essentially a door or window is opened letting moist air out and dry air in. This method will only work however if the absolute humidity is lower outside than in and it is practical to leave the door or window open for sustained periods. Also if the temperature outside is low, the loss of heat energy from the room can be significant.
Heating followed by venting works by applying heat to a room to speed up the evaporation of water and also increase the amount of water that can be held by the air. This hot moist air is then vented at intervals and dry air is brought in to the room. The process then repeats. This method has two significant drawbacks: firstly heat energy is lost each time the room is vented, secondly when the colder dry air enters the room, evaporation slows until the room has heated up again. These drawbacks lead to energy wastage and extended drying times.
To overcome these issues, most notably efficiency and drying time, the present invention proposes a combination of internal and external relative humidity and temperature sensors combined with an airflow system bringing dry air from outside and venting moist air via a heat recovery system.
An electronic system would continually monitor the internal and external sensors ensuring that the most efficient extraction of water was achieved by modulating the rate of airflow through the heat recovery unit.
The electronic system can also send a signal to a heater unit to switch on or off if the differential in absolute humidity is too small or it is drier inside than out.
The rate of water this system can extract at any given time is directly proportional to the difference in internal and external absolute humidifies. Given the majority of flood damage occurs during autumn and winter, during this time external temperatures tend to be low resulting in low absolute humidity even if relative humidity is high. With typically warm conditions inside, the difference of absolute humidity during this critical autumn winter period is often very large.
An example of the invention will now be described by referencing the accompanying drawings.
* Figure 1 shows a schematic drawing of the drying machine Relative humidity and temperature sensors 1 are connected to the electronic system 2 allowing it to calculate the absolute humidity or total water content by volume within the air of the room.
Relative humidity and temperature sensor 3 are connected to the electronic system 2 allowing it to calculate the absolute humidity or total water content by volume in the external air.
The air heat recovery unit 4 brings cool dry air in from the outside 6, draws moist warm air from inside 7, recovers the heat from this air and expels it as cold damp airS. Warm dry air is blown into the room 8. The warmth of the air, its dryness particularly compared to the damp wall or floor of the building and the airflow itself all encourage evaporation.
The electronic system 2 compares the absolute humidity levels and modulates the air flow as follows: * if the internal absolute humidity level is significantly higher than outside then the heat recovery unit is set to maximum air flow. The heater unit 9 will be switched off.
* if the internal absolute humidity level is slightly higher than outside then the heat recovery unit is set to Low Flow reducing energy use. Depending on mode, the heater unitY will be switched on.
* if the internal absolute humidity level is at or below the outside level then the heat recovery unit will switch off. During this phase, the unit may still run for a while along with the heater 9 to encourage evaporation.
The unit would have multiple operating modes for various usage applications: In Standard Mode the system would operate to balance efficiency with speed of drying.
In Speed Dry Mode the system would operate at full air flow and heater on continuously.
In Quiet Mode the system would run at low air volumes to reduce noise.
In Eco Mode the system would run in the most efficient in terms of Watts per litre of water extracted as is feasible.
Additionally, for the benefits of occupants, the system could be set to operate exclusively in Quiet Mode during certain hours.
The internal absolute humidity will be monitored and the unit will automatically turn off once the rate of reduction has reached a preset threshold.
Parameters, such as maximum internal temperature are configurable in the electronic system.
GB1401021.9A 2014-01-22 2014-01-22 Efficient apparatus for drying rooms within a building Withdrawn GB2524713A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1401021.9A GB2524713A (en) 2014-01-22 2014-01-22 Efficient apparatus for drying rooms within a building

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1401021.9A GB2524713A (en) 2014-01-22 2014-01-22 Efficient apparatus for drying rooms within a building

Publications (2)

Publication Number Publication Date
GB201401021D0 GB201401021D0 (en) 2014-03-05
GB2524713A true GB2524713A (en) 2015-10-07

Family

ID=50239264

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1401021.9A Withdrawn GB2524713A (en) 2014-01-22 2014-01-22 Efficient apparatus for drying rooms within a building

Country Status (1)

Country Link
GB (1) GB2524713A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6161763A (en) * 1998-03-09 2000-12-19 Reuter; Grant Module-controlled building drying system and process
US20090151190A1 (en) * 2007-12-12 2009-06-18 Richard Anderson Drying system and method of using same
EP2498036A2 (en) * 2011-03-08 2012-09-12 DBK David + Baader GmbH Improvements in and relating to drying of water damaged buildings

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6161763A (en) * 1998-03-09 2000-12-19 Reuter; Grant Module-controlled building drying system and process
US20090151190A1 (en) * 2007-12-12 2009-06-18 Richard Anderson Drying system and method of using same
EP2498036A2 (en) * 2011-03-08 2012-09-12 DBK David + Baader GmbH Improvements in and relating to drying of water damaged buildings

Also Published As

Publication number Publication date
GB201401021D0 (en) 2014-03-05

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