DK179999B1 - System and method for CO2 controlled regulation of ventilation, cooling or heating in pavilions, modular buildings and other buildings - Google Patents

System and method for CO2 controlled regulation of ventilation, cooling or heating in pavilions, modular buildings and other buildings Download PDF

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Publication number
DK179999B1
DK179999B1 DKPA201870412A DKPA201870412A DK179999B1 DK 179999 B1 DK179999 B1 DK 179999B1 DK PA201870412 A DKPA201870412 A DK PA201870412A DK PA201870412 A DKPA201870412 A DK PA201870412A DK 179999 B1 DK179999 B1 DK 179999B1
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Denmark
Prior art keywords
building
inlet
air
sensors
humidity
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DKPA201870412A
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Danish (da)
Inventor
Guðjonsson Beinur
Bolding Jørgensen Sven
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Dansk Aircon Fyn Aps
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Priority to DKPA201870412A priority Critical patent/DK179999B1/en
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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
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H15/00—Tents or canopies, in general
    • E04H15/02—Tents combined or specially associated with other devices
    • E04H15/10—Heating, lighting or ventilating
    • E04H15/14—Ventilating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Air Conditioning Control Device (AREA)
  • Building Environments (AREA)

Abstract

The present invention relates to a system and a method for cooling or heating and ventilation in a building such as a pavilion, which system comprises a combined heat pump and cooling device, which system also comprises ventilation means for generating air flow from an inlet and further through an outlet. A first object of the invention is to achieve a system to control the climate in a small building such as a pavilion by connecting an external climate regulating system to the building. A further object is to limit the installation which has to be performed in the building because most of the technical devices are placed in the outdoor system. The object can be achieved by a system or a method in that the system can be formed in an outdoor module, which outdoor module is connected by at least an outlet air connection from a building and an inlet air connection to the building which system performs measurement of the CO2 by the CO2 sensor in the outlet air connection from the building, which system performs adjustment of the CO2 in the inlet air connection to the building by adding fresh outdoor air to the inlet of the building.

Description

System and method for CO2 controlled regulation of ventilation, cooling or heating in pavilions, modular buildings and other buildings
Field of the Invention
The present invention relates to a system and a method adapted for cooling or heating and ventilation in a building such as a pavilion, which system comprises a combined heat pump and cooling device, which system also comprises ventilation means for generating air flow from an inlet and further through an outlet, which system comprises one or more temperature sensors adapted to at least measure the temperature in the inlet and outlet, which system comprises one or more humidity sensors adapted to measure the humidity concentration of inlet and outlet air, which system comprises one or more CO2 sensors adapted to measure the CO2 concentration of the inlet and outlet air.
Background of the invention
US 2015075766 discloses a system for heating, ventilating and air conditioning, which systems are provided to a temporary, flexible shelter, especially in a rugged, remote and/or extreme environment, including locations and/or conditions where access to electric power may be limited and/or expensive. A portable system may include a light weight HVAC unit, with variable-speed components that are dynamically managed for efficiency, reliability and safety, and a flexible, self-insulating duct for connecting the HVAC unit to the temporary shelter.
Object of the Invention
A first object of the invention is to achieve a system to control the climate in a small building such as a pavilion by connecting an external climate regulating system to the building.
A further object is to limit the installation which has to be performed in the building because most of the technical devices are placed in the outdoor system.
Description of the Invention
The object can be achieved by a system or a method as disclosed in the opening paragraph and modified in that the system can be formed in an outdoor module, which outdoor module is connected by at least an outlet air connection from a building and an inlet air connection to the building which system performs measurement of the CO2 by the CO2 sensor in the outlet air connection from the building, which system performs adjustment of the CO2 in the inlet air connection to the building by adding fresh outdoor air to the inlet of the building, which system performs adjustment of the temperature by the combined heat pump or cooling device.
Hereby can be achieved that in small buildings or pavilions it is possible to perform climate control by an external system only connected to the building by an inlet and an outlet. The outdoor system is able to control the temperature, humidity and CO2 content in the air inside the building or pavilion simply by measuring in the most primitive way the air coming from the building or pavilion.
In a more sophisticated embodiment of the invention, further sensors could be placed in the building or pavilion, where measurement of temperature, humidity and carbon dioxide could be performed. This way the system can in a controller define if cooling is necessary and activate the module for cooling or in the opposite situation if heating is necessary connect the system into a heat pump device. A skilled person will realise that switching a cooling device from cooling to heat pump operation is performed by switching one or more valves and hereby switch the evaporator to perform condensation, and the former condenser can operate as evaporator. By a combined cooling and heat pump device it is possible also to reduce the humidity in the air passing through the system. The system can at first reduce the temperature by cooling and hereby let some of the humidity condensate in the evaporator. Afterwards the air with a lower content of humidity is sent through the condenser, and afterwards it is heated. In that way the humidity in the building or pavilion can be adjusted. The adjustment of carbon dioxide can be performed by adding more or less fresh air to the inlet air.
In a preferred embodiment of the invention the system can comprise a cross heat exchanger to preheat fresh inlet air before heating by the heat pump. Hereby can be achieved, that the energy consumption in the building is reduced simply because heat removed from the building is used to preheat fresh air sent into the building. Cross heat exchangers are well-known in the state of the art in air condition or heating systems integrated in buildings. The use of a cross heat exchanger in an external module placed outside the building allows for placing the heat exchanger inside the building. By placing the heat exchanger in the external module no volume in the building has to be used for the heat exchanger. In that way if service has to be performed at the heat exchanger, e.g. of internal surfaces, this can be performed without access to the building. Also in a situation where cooling is performed it is possible that the cross heat exchanger could be used. If the temperature of the air removed from the building is below the temperature outside, it is also possible to heat exchange fresh inlet air with the air that has just been removed from the building.
In a further preferred embodiment of the invention the system can comprise ventilation means for fresh air to be cooled by a cooling device before cooled air is sent into the building. Hereby can be achieved that fresh air from outside can be ventilated into the building. In a situation where the outside air is warmer than what is preferred in the building, it is possible to cool the air by sending it through the cooling device. In other situations when the air ventilated into the system has to be heated instead, the combined cooling and heat pump can switch into heat pump mode and perform heating of the air. In many situations there will be a mixture of air that is sucked out from the building and mixed with fresh air sent through the combined cooling or heat pump device.
In a further preferred embodiment of the invention the system can comprise a plurality of humidity sensors, which system is adapted to control and adjust the humidity in a building by a combined cooling and heating performed by the heat pump and the cooling device. Hereby can be achieved that the humidity in a building is to be controlled at first by measuring the humidity maybe in the outlet tube of the building or maybe by further sensors measuring humidity, which sensors could be placed inside the building. The combined cooling and heat pump device could start cooling the air and hereby remove the humidity and afterwards heat the air again by the heat pump de vice.
In a further preferred embodiment of the invention, the heat pump and cooling device can comprise a control system, which control system is adapted at least to perform control of the ventilation means. Hereby can be achieved that the control system placed in the heat pump and cooling device is modified in such way that the existing control system is able to control at least the ventilation means. Hereby can be achieved that the control system is also adapted to receive signals from the plurality of sensors i.e. sensors of temperature, humidity and CO2. By input from a plurality of sensors the system can perform an adjustment of the climate inside the building or the pavilion because the system has the possibility to adjust temperature, humidity and CO2 in the building.
In a further preferred embodiment of the invention the control system can be adapted to receive a plurality of sensor signals, such as signals from temperature sensors, humidity sensors or CO2 sensors. Hereby can be achieved that further sensor signals from the pavilion or building can be used in order to receive measuring values from different places in e.g. a pavilion. This way not only the temperature and humidity content and carbon dioxide are measured in the inlet air but they are also measured in the actual room. This way this system can perform highly efficient climate prevention in a small building such as a pavilion.
In a further preferred embodiment of the invention, the control system can be adapted to perform ventilation based on the sensor signals, such as signals from temperature sensors, humidity sensors or CO2 sensors, whereby the system performs control of the climate in a building connected to the system. Hereby can be achieved, that ventilation is performed based on external sensors connected to the system. By letting the system perform computer analysis of the received data concerning temperature, humidity and carbon dioxide it is possible for the system to calculate control parameters not only for the ventilation system but also for the combined heat pump and cooling device. By using a plurality of climate input signals it is possible in the pavilion or in the building to perform highly efficient climate control.
In a further preferred embodiment of the invention the invention can be disclosed as a method for climate control in a building such as a pavilion by a system as disclosed previously in at least the following steps of operation:
A: perform measurement by more humidity sensors adapted to measure the humidity concentration of inlet and outlet air,
B: perform control and adjust the humidity in a building by a combined cooling and heating performed by the heat pump and the cooling device,
C: perform measurement of the CO2 by the CO2 sensor in the outlet air connection from the building,
D: perform adjustment of the CO2 in the inlet air connection to the building by adding fresh outdoor air to the inlet to the building,
E: perform adjustment of temperature by the combined heat pump or cooling device
Hereby can be achieved that the climate inside a building or pavilion is under control. This could be very important e.g. if a building such as a pavilion is used for education purposes, and the CO2 content in the air is relatively high which will reduce the students level of activity significantly. Therefore, it could be rather important that the carbon dioxide is reduced in the room by adding fresh air continuously. Only by measurement of the CO2 content it is possible also financially to adjust the amount of fresh air that is added. This is especially important e.g. during the winter period when heating is necessary. But also in extreme warm periods it is important that the carbon dioxide content is reduced, but the system always has to look at the cost of performing the ventilation.
Description of the Drawing
Fig. 1 shows a schematic view of a possible embodiment of the invention.
Detailed Description of the Invention
Fig. 1 shows a schematic view of a possible embodiment of the invention. Fig. 1 shows a system 2 comprising a combined heat pump and cooling device. Furthermore, ventilation means 6 are indicated. The system 2 has an inlet and an outlet 10. Furthermore, temperature sensors 12, humidity sensors 14 and CO2 sensors 16 are indi cated. These sensors are indicated as well in the inlet 8 as in the outlet 10. The ventilation means and the combined heat pump and cooling device 4 are combined in an outdoor module 18. The outdoor module is placed near a building 22 which building could be a pavilion. This building 22 has an inlet air connection 20 and an outlet air connection 24. Furthermore, at the ventilation means 6 a fresh inlet air connection 26 is indicated. Furthermore, in the ventilation means 6 a counter flow heat exchanger 28 is indicated. Furthermore, a filter 30 is indicated. When the system 2 is connected to a building and during operation, air will be sucked through the outlet air connection 24 into the air inlet 8 of the system, where temperature sensors 12, humidity sensors 14 and CO2 sensors 16 are measuring the air coming from the building. Hereby the system 2 is able to handle the air flowing from the inlet 8 to the counter flow heat exchanger 28 or into the combined heat pump or cooling device 4. In the heat pump or cooling device 4 cooling or heating could be performed. But it is also possible in the heat pump or cooling device 4 to reduce the humidity in the air. This can be performed by cooling down the inlet air in the evaporator and hereby reduce humidity. Afterwards heating could be performed in the heat pump. Afterwards the air could be sent to a filter 30 into the outlet 10 which forms the inlet 20 of the building 22. Inside the building is indicated an air injection unit which is performed in a number of sacks which can be replaced for cleaning. The drawing does not indicate the fact that it is possible to add further sensors to the system 2 such that the system has access to sensors for temperature, humidity and CO2 inside the building.
This invention allows for climate control in e.g. pavilions or small buildings to be used here and now e.g. for education purposes. Not having to consider the indoor climate it is possible to erect a pavilion rather fast. The invention allows for a fresh air installation to be placed outside the building and be connected by tubing. If a pavilion is to be used for a few years only, while a permanent building is under construction, the system 2 can easily be removed and may be connected to another new pavilion some else.
Ref. signs
System
Combined heat pump or cooling device
Ventilation means
Inlet
Outlet
Temperature sensors
Humidity sensors
CO2 sensors
Outdoor module
Inlet air connections
Building
Outlet air connections
Fresh inlet air
Counter flow heat exchanger

Claims (7)

1. Anlæg (2) til køling eller opvarmning egnet til ventilation i en bygning (22) såsom en pavillon, hvilket anlæg (2) omfatter en kombineret varmepumpe (4) eller køleindretning (5), hvilket anlæg (2) omfatter ventilationsorganer (6) til generering af luftstrøm fra et tilløb (8) og yderligere gennem et udløb (10), hvilket anlæg (2) omfatter en flerhed af temperaturfølere (12) indrettet til i det mindste at måle temperaturen i tilløbet (8) og udløbet (10), hvilket anlæg (2) omfatter en flerhed af luftfugtighedsfølere (14) indrettet til at måle luftfugtighedskoncentrationen af indløbs- og udløbsluft, hvilket anlæg (2) omfatter en flerhed af CO2-følere (16) indrettet til at måle CO2koncentration indløbs- (8) og udløbsluft (10), kendetegnet ved, at anlægget (2) er etableret i et udendørsmodul (18), hvilket udendørsmodul (18) er forbundet med mindst en udløbsluftforbindelse (24) fra en bygning (22) og en indløbsluftforbindelse (20) til bygningen (22), hvilket anlæg udfører måling af CO2 ved hjælp af CO2-føler (16) i indløbsluftforbindelsen (24) fra bygningen (22), hvilket anlæg udfører tilpasning af CO2 i indløbsluftforbindelsen (20) til bygningen (22) ved at tilføje frisk udendørsluft (26) til indløbsluftforbindelsen (20), hvilket anlæg udfører tilpasning af temperaturen ved den kombinerede varmepumpe (4) eller køleindretning (5), at anlægget (2) omfatter en flerhed af luftfugtighedsfølere (14), hvilket anlæg er indrettet til at styre og tilpasse luftfugtigheden i en bygning (22) ved en kombineret køling og opvarmning udført af varmepumpen (4) og køleindretningen (5).A cooling or heating system (2) suitable for ventilation in a building (22) such as a pavilion, which system (2) comprises a combined heat pump (4) or cooling device (5), which system (2) comprises ventilation means (6). ) for generating air flow from an inlet (8) and further through an outlet (10), which system (2) comprises a plurality of temperature sensors (12) arranged to at least measure the temperature in the inlet (8) and the outlet (10). ), which system (2) comprises a plurality of humidity sensors (14) arranged to measure the humidity concentration of inlet and outlet air, which system (2) comprises a plurality of CO2 sensors (16) arranged to measure CO2 concentration inlet (8). ) and outlet air (10), characterized in that the system (2) is established in an outdoor module (18), which outdoor module (18) is connected to at least one outlet air connection (24) from a building (22) and an inlet air connection (20). to the building (22), which plant performs CO2 measurement at by means of CO2 sensor (16) in the inlet air connection (24) from the building (22), which system performs adaptation of CO2 in the inlet air connection (20) to the building (22) by adding fresh outdoor air (26) to the inlet air connection (20), which system performs adjusting the temperature of the combined heat pump (4) or cooling device (5), that the system (2) comprises a plurality of humidity sensors (14), which system is arranged to control and adjust the humidity of a building (22) at a combined cooling and heating performed by the heat pump (4) and the cooling device (5). 2. Anlæg ifølge krav 1, kendetegnet ved, at anlægget (2) omfatter en modstrømsvarmeveksler (28) til at forvarme frisk indløbsluft (26) før opvarmning af varmepumpen (4).System according to claim 1, characterized in that the system (2) comprises a countercurrent heat exchanger (28) for preheating fresh inlet air (26) before heating the heat pump (4). 3. Anlæg ifølge krav 1 eller 2, kendetegnet ved, at anlægget (2) omfatter ventilationsorganer (6) for køling af frisk luft ved hjælp af køleindretningen (5) før afkølet luft sendes ind i bygningen (22).System according to claim 1 or 2, characterized in that the system (2) comprises ventilation means (6) for cooling fresh air by means of the cooling device (5) before cooled air is sent into the building (22). 4. Anlæg ifølge ethvert af kravene 1-3, kendetegnet ved, at varmepumpen (4) og kølingsindretningen omfatter et styresystem (30), hvilket styresystem (30) er indrettet til mindst at udføre styring af ventilationsorganerne (6).Plant according to any one of claims 1-3, characterized in that the heat pump (4) and the cooling device comprise a control system (30), which control system (30) is arranged to at least perform control of the ventilation means (6). 5. Anlæg ifølge ethvert af kravene 1-4, kendetegnet ved, at styresystemet (30) er indrettet til at modtage en flerhed af følersignaler, såsom signaler fra temperaturfølere (12), luftfugtighedsfølere (14) eller CO2-følere (16).Plant according to any one of claims 1-4, characterized in that the control system (30) is arranged to receive a plurality of sensor signals, such as signals from temperature sensors (12), humidity sensors (14) or CO2 sensors (16). 6. Anlæg ifølge ethvert af kravene 1-4, kendetegnet ved, at styresystemet (30) er indrettet til at udføre ventilation baseret på følersignalerne, såsom signaler fra temperaturfølere (12), luftfugtighedsfølere (14) eller CO2-følere (16), hvorved anlægget (2) udfører styring af klimaet i en bygning (22) forbundet med anlægget (2).System according to any one of claims 1-4, characterized in that the control system (30) is arranged to perform ventilation based on the sensor signals, such as signals from temperature sensors (12), humidity sensors (14) or CO2 sensors (16), wherein the plant (2) performs climate control in a building (22) connected to the plant (2). 7. Fremgangsmåde til styring af klimaet i en bygning (22) såsom en pavillon ved hjælp af et anlæg (2) ifølge kravene 1-6, kendetegnet ved i det mindste følgende driftstrin:Method for controlling the climate in a building (22) such as a pavilion by means of a plant (2) according to claims 1-6, characterized by at least the following operating steps: A: Udføre måling ved hjælp af en flerhed af luftfugtighedsfølere (14) indrettet til at måle lugtfugtighedskoncentrationen i indløbs- og udløbsluft,A: Perform measurement using a plurality of humidity sensors (14) arranged to measure the humidity concentration in the inlet and outlet air, B: Udføre styring og tilpasning af luftfugtigheden i en bygning (22) ved en kombineret køling og opvarmning ved hjælp af varmepumpen (4) og køleindretningen (5),B: Perform control and adjustment of the humidity in a building (22) by a combined cooling and heating by means of the heat pump (4) and the cooling device (5), C: Udføre måling af CO” ved hjælp af CO2-føler (16) i udløbsluftforbindelsen (20) fra bygningen (22),C: Perform CO 'measurement using CO2 sensor (16) in the exhaust air connection (20) from the building (22), D: Udføre tilpasning af CO2 i indløbsluftforbindelsen (24) til bygningen (22) ved tilføjning af frisk udendørsluft (26) til indløbsluftforbindelsen (20),D: Perform adjustment of CO2 in the inlet air connection (24) to the building (22) by adding fresh outdoor air (26) to the inlet air connection (20), E: Udføre tilpasning af temperaturen ved hjælp af den kombinerede varmepumpe (4) eller køleindretningen (5).E: Perform temperature adjustment using the combined heat pump (4) or the cooling device (5).
DKPA201870412A 2018-06-18 2018-06-18 System and method for CO2 controlled regulation of ventilation, cooling or heating in pavilions, modular buildings and other buildings DK179999B1 (en)

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DKPA201870412A DK179999B1 (en) 2018-06-18 2018-06-18 System and method for CO2 controlled regulation of ventilation, cooling or heating in pavilions, modular buildings and other buildings

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DKPA201870412A DK179999B1 (en) 2018-06-18 2018-06-18 System and method for CO2 controlled regulation of ventilation, cooling or heating in pavilions, modular buildings and other buildings

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DK179999B1 true DK179999B1 (en) 2020-01-15

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Effective date: 20191219

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