Systems and methods for controlling air properties in structures and inhibiting moisture accumulation and mold propagation in structures
A structure comprises at least one outer wall having an internal wall section and an outer wall section with an air flow passage therebetween. A circulation system circulates air through the flow passage to inhibit moisture accumulation and mold growth. A sensing system determines the presence of moisture in the flow passage and generates a signal in response thereto. A controller receives the signal from the sensing system and controls the circulation system to maintain a predetermined temperature and relative humidity in the flow passage.
1. A structure comprising:
a floor;
a roof;
one or more exterior walls, each exterior wall including:
an exterior wall air path way including:
one or more exterior wall air pathway inlets, and
one or more exterior wall air pathway outlets;
a plurality of interior walls;
one or more of exterior window assemblies, each of the one or more of exterior window assemblies including:
an exterior window,
an interior window, and
a window air pathway interposed between the exterior window and the interior window and including:
a window air flow pathway inlet, and
a window air flow pathway outlet,
a plurality of interior spaces defined by the exterior and interior walls;
an heating, ventilation, and air conditioning (HVAC) unit including:
one or more HVAC inlet conduits, each of the one or more HVAC inlet conduits including:
an HVAC inlet including:
an HVAC inlet control valve configured to control a supply of unconditioned air or a mixture of unconditioned air and exhaust conditioned air to the HVAC unit;
one or more HVAC exhaust conduits, each of the one or more HVAC exhaust conduits including:
an HVAC exhaust inlet, and
an HVAC exhaust outlet configured to support an air flow of the exhaust conditioned air out of the structure, to the HVAC inlet, or any combination thereof;
one or more HVAC interior space outlet conduits, each of the one or more HVAC interior space outlet conduits including:
an HVAC interior space outlet including:
an HVAC interior space outlet control valve configured to control a supply of conditioned air to each of the interior spaces;
one or more HVAC exterior wall conduits, each of the one or more HVAC exterior wall conduits including:
an HVAC exterior wall outlet including:
an HVAC exterior wall control valve configured to support an exterior wall pathway air flow of conditioned air to each of the exterior wall pathways, wherein wall pathway air flows reduce, remove, and/or eliminate moisture in the exterior walls and increase heating and cooling efficiencies, and
an HVAC window conduit for each of the one or more of exterior window assemblies, each HVAC window conduit including:
an HVAC window conduit inlet, and
an HVAC window conduit inlet,
wherein window pathway air flows reduce, remove, and/or eliminate moisture in the exterior windows and increase heating and cooling efficiencies.
2. The structure of claim 1 , wherein:
one, some, or all of the exterior wall air flow pathway outlets include:
a passive one-way or unidirectional valve or an active control valve to stop air or water flow into each of the exterior wall air flow pathway outlets, and/or one, some, or all of the exterior window air flow pathway outlets include:
a passive one-way or unidirectional valve or an active control valve to stop air or water flow into each of the exterior wall air flow pathway outlets.
3. The structure of claim 1 , wherein each of the plurality of interior walls includes:
one or more interior wall air flow pathways, each of the one or more interior wall air flow pathways including:
a interior wall air pathway inlet, and
a interior wall air pathway outlet; and
the HVAC unit further including:
one or more HVAC interior wall conduits, each of the one or more HVAC interior wall conduits including:
an HVAC interior wall outlet including:
an HVAC interior wall control valve configured to support an interior wall pathway air flow of conditioned air to each of the interior wall pathways,
wherein the interior air flows reduce, remove, and/or eliminate moisture in the interior walls, and
one, some, or all of the interior wall air flow pathway outlets include:
a passive one-way or unidirectional valve or an active control valve to stop air or water flow into each of the exterior wall air flow pathway outlets.
4. The structure of claim 1 , wherein each of the one or more exterior walls includes:
an outer surface including:
an insulating layer;
a weather-resistant layer disposed on an outer surface of the insulating layer,
a sheathing,
a liquid barrier, or
any combination thereof, and/or
an inner surface including:
an insulating layer,
a weather-resistant layer disposed on an outer surface of the insulating layer,
a sheathing,
a liquid barrier, or
any combination thereof.
5. The structure of claim 1 , further comprising:
an air flow control system including:
a processing unit; and
plurality of sensors;
wherein one, some, or all of the control valves are active control valves,
wherein the processing unit is in communication with the active control valves, and
wherein the processing unit is configured to:
receive input from the sensors, and
control the HVAC unit, and
control the active control valves so that air flow rates are controlled into the interior spaces and into the pathways, and
during a 24 hour period of time, the processing unit is further configured to:
adjust the air flow into each of the interior spaces and into each pathway so that one or more interior space properties and/or one or more pathway properties are maintained at desired values.
6. The structure of claim 5 , wherein the sensors comprise temperature sensors, water/moisture sensors, air flow sensors, chemical sensors, other physical sensors, and combinations thereof.
7. The structure of claim 5 , wherein one or more of the sensors are disposed in the air flow pathways, in the interior spaces, or in both.
8. The structure of claim 5 , wherein:
all of the control valves are active control valves, and
during a 24 hour period of time, the processing unit is further configured to:
adjust the air flow into each of the interior spaces and into each pathway so that one or more interior space properties and/or one or more pathway properties are maintained at desired values.
9. The structure of claim 8 , wherein the one or more properties include moisture concentrations in the interior spaces, moisture concentrations in the pathways, temperatures in the interior spaces, temperatures in the pathways, pressures in the interior spaces, pressures in the pathways, air flow rates in the interior spaces, air flow rates in the pathways, sensed chemical concentrations in the interior spaces, sensed chemical concentrations in the pathways, microbial concentrations in the interior spaces, microbial concentrations in the pathways or mixtures and combinations thereof.
10. The structure of claim 1 , further comprising:
a dispensing assembly associated with one, some, or all of the pathways and including:
a reservoir containing a treating composition;
a dispensing supply conduit having:
a dispensing assembly control value,
a dispensing head at its distal end,
wherein:
the dispensing assembly control value is configured to control an amount of treating solution or gas introduced into one, some, or all of the pathways, the treating composition comprising a mold control composition, a pesticide, an insecticide, a fungicide, a bactericide, a rodent poison, other control compositions, a gas, a fire retardant compositions, a foam, or mixtures or combinations thereof;
the gas comprising nitrogen, nitrogen enriched air, argon, haloalkanes or mixtures thereof;
the haloalkanes comprising iodomethane; bromomethane, bromochloromethane, carbon tetrachloride, tribromofluoromethane, dichlorofluoromethane, bromodifluoromethane, dibromodifluoromethane, bromochlorodifluoromethane, dichlorodifluoromethane, bromotrifluoromethane, tetrafluoromethane, 1,2-dichlorotetrafluoroethane, dibromotetrafluoroethane, hexafluoroethane, or mixtures thereof.
11. A multistory structure comprising:
a plurality of stories, each of the stories including:
a floor,
a ceiling, and
a dead space disposed above the ceiling;
one or more exterior walls, each of the one or more exterior walls including:
an exterior wall air flow pathway; and
at least one exterior wall exhaust conduit;
a plurality of exterior window assemblies, each of the plurality of exterior window assemblies including:
an exterior window,
an interior window, and
a window air pathway interposed between the exterior window and the interior window and including:
a window air flow pathway inlet, and
a window air flow pathway outlet,
a plurality of interior walls, each of the interior walls including:
an interior wall air flow pathway; and
at least one interior wall outlet conduit;
a plurality of interior spaces defined by the one or more exterior walls and interior walls;
an air handling system comprising:
an heating, ventilation, and air conditioning (HVAC) unit;
an HVAC inlet conduit including:
an HVAC surroundings inlet conduit having:
a surrounding inlet including:
a surrounding inlet active control valve configured to supply unconditioned air to the HVAC unit;
a return conditioned air conduit including:
a return conduit active control valve configured to control an amount of exhausted conditioned air to the HVAC unit;
a plurality of floor return conduits, each of the floor return conduits including:
an inlet disposed in the each of the floor dead spaces including:
a floor return conduit active control valve configured to control an amount of exhaust conditioned air supplied to the return conduit from each of the dead spaces;
a main HVAC outlet conduit including;
a plurality of floor outlet conduits, each of the floor outlet conduits including:
a floor outlet conduit active control valve configured to control an amount of conditioned air supplied to each of the floors;
a plurality of interior space outlet conduits, each of the interior space outlet conduits having:
a plurality of interior space outlets, each of the interior space outlets having an interior space outlet conduit active control valve configured to control an amount of conditioned air supplied to each of the interior space outlets; and
exterior window outlet conduit active control valves configured to control an amount of conditioned air supplied to each of the plurality of exterior windows;
one or more HVAC exhaust conduits, each of the one or more HVAC exhaust conduits including:
a HVAC exhaust conduit active control valve configured to control an amount of conditioned air exhausted to the surroundings; and
an air flow control system including:
a processing unit coupled to or associated with a plurality of sensors, the active control valves and the air handling system;
one or more of the sensors is disposed in each of the interior spaces;
one or more of the sensors is disposed in the pathways;
wherein the processing unit is configured to:
receive input from the sensors; and
control the HVAC unit and the active control valves based on the sensor inputs to control unconditioned air flow rates into the HVAC, interior space air flow rates from the HVAC, return air flow rates into the HVAC, exhaust air flow rate to the surroundings, and pathway air flow rates through the pathways and into the surroundings.
12. The structure of claim 11 , wherein each of the floor return conduits further including:
at least one return air active control valve configured to control an amount of the return conditioned air to the return conditioned air conduit.
13. The structure of claim 11 , wherein the sensors comprise temperature sensors, water/moisture sensors, air flow sensors, chemical sensors, other physical sensors, and combinations thereof.
14. The structure of claim 13 , wherein, during a 24 hour period of time, the processing unit is further configured to:
adjust the air flow into each of the interior spaces and into each pathway based the received sensor input so that one or more interior space properties and/or one or more pathway properties are maintained at desired values.
15. The structure of claim 14 , wherein the one or more properties include moisture concentrations in the interior spaces, moisture concentrations in the pathways, temperatures in the interior spaces, temperatures in the pathways, pressures in the interior spaces, pressures in the pathways, air flow rates in the interior spaces, air flow rates in the pathways, sensed chemical concentrations in the interior spaces, sensed chemical concentrations in the pathways, microbial concentrations in the interior spaces, microbial concentrations in the pathways or mixtures and combinations thereof.
16. The structure of claim 11 , further comprising:
a dispensing assembly associated with one, some, or all of the pathways and including:
a reservoir containing a treating composition;
a dispensing supply conduit including:
a dispensing assembly control valve,
a dispensing head at its distal end,
wherein:
the dispensing assembly control valve is configured to control an amount of treating solution or gas introduced into one, some, or all of the pathways, the treating composition comprising a mold control composition, a pesticide, an insecticide, a fungicide, a bactericide, a rodent poison, other control compositions, a gas, a fire retardant compositions, a foam, or mixtures or combinations thereof;
the gas comprising nitrogen, nitrogen enriched air, argon, haloalkanes, or mixtures thereof;
the haloalkanes comprising iodomethane; bromomethane, bromochloromethane, carbon tetrachloride, tribromofluoromethane, dichlorofluoromethane, bromodifluoromethane, dibromodifluoromethane, bromochlorodifluoromethane, dichlorodifluoromethane, bromotrifluoromethane, tetrafluoromethane, 1,2-dichlorotetrafluoroethane, dibromotetrafluoroethane, hexafluoroethane, or mixtures thereof.