HEPA air filtration with an air handling device

A HEPA/VOC air handling system comprising:

• a HEPA air filtration unit having
• (a) a first chamber,
• (b) a second chamber,
• (c) a fresh air inlet that directs selected quantities of fresh air into the first chamber,
• (d) a return air inlet that directs selected quantities of return air into the first chamber,
• (e) the fresh air and the return air are mixed together in the first chamber to form mixed air,
• (f) a HEPA filter capable of receiving the mixed air and directs filtered air into the second chamber;
• an air handling unit having
• (a) a filtered air intake capable of receiving the filtered air,
• (b) a heat exchanger and/or a desiccant exchanger, and
• (c) an outlet capable of directing the conditioned filtered air toward at least a room in a building;
• a fresh air sensor system (a) positioned in the fresh air inlet, and (b) has (i) a first fresh air sensor that measures air pressure, a second fresh air sensor that measures CO2 levels, a third fresh air sensor that measures humidity and a fourth fresh air sensor that measures temperature;
• or (ii) has at least one fresh air sensor that measures at least two air characteristics selected from the group consisting of air pressure, CO2 levels, humidity and temperature and those air characteristics not measured by the at least one fresh air sensor are measured by a second fresh air sensor or a second fresh air sensor and a third fresh air sensor;
• a return air sensor system (a) positioned in the return air inlet, and (b) has (i) a first return air sensor that measures air pressure, a second return air sensor that measures CO2 levels, a third return air sensor that measures humidity and a fourth return air sensor that measures temperature;
• or (ii) has at least one return air sensor that measures at least two air characteristics selected from the group consisting of air pressure, CO2 levels, humidity and temperature and those air characteristics not measured by the at least one return air sensor are measured by a second return air sensor or a second return air sensor and a third return air sensor;
• a first chamber air sensor system (a) positioned in the first chamber, (b) measures the mixed air's air pressure, CO2 levels, humidity and temperature, and (c) has (i) a first first chamber air sensor that measures air pressure, a second first chamber air sensor that measures CO2 levels, a third first chamber air sensor that measures humidity and a fourth first chamber air sensor that measures temperature;
• or (ii) has at least one first chamber air sensor that measures at least two air characteristics selected from the group consisting of air pressure, CO2 levels, humidity and temperature and those air characteristics not measured by the at least one first chamber air sensor are measured by a second first chamber air sensor or a second first chamber air sensor and a third first chamber air sensor;
• an air handling air sensor system (a) positioned in the air handling unit, and (b) has (i) a first air handling air sensor that measures air pressure, a second air handling air sensor that measures CO2 levels, a third air handling air sensor that measures humidity and a fourth air handling air sensor that measures temperature;
• or (ii) has at least one air handling air sensor that measures at least two air characteristics selected from the group consisting of air pressure, CO2 levels, humidity and temperature and those air characteristics not measured by the at least one air handling air sensor are measured by a second air handling air sensor or a second air handling air sensor and a third air handling air sensor;
• a controller
• (a) capable of receiving the measurements transmitted from the fresh air sensor system, the return air sensor system, the first chamber air sensor system, and the air handling air sensor system;
• (b) capable of receiving a confirmation signal that confirms whether the air handling unit is operating or not,
• (c) evaluates the measurements from the fresh air sensor system, the return air sensor system, the first chamber air sensor system to first predetermined threshold parameter values regarding air pressure, CO2 levels, humidity and temperature and
• when every measurement from the fresh air sensor system is within the first predetermined threshold parameter values, then the controller permits a fresh air inlet damper to at least partially open to permit a calculated amount of fresh air to enter into the first chamber;
• when every measurement from the return air sensor system is within the first predetermined threshold parameter values, then the controller permits a return air inlet damper to open to at least partially permit a calculated amount of return air to enter into the first chamber;
• wherein the calculated amount of return air and the calculated amount of fresh air entering into the first chamber collectively (a) will decrease the chance of over-pressurizing or under-pressurizing the room, and (b) will mix to increase a chance that air pressure, CO2 levels, humidity, and temperature of the mixed air will be within or move toward second predetermined threshold parameter values regarding air pressure, CO2 levels, humidity and temperature;
• when at least one measurement from the return air sensor system is outside the first predetermined threshold parameter values, then the controller opens a return air inlet exhaust damper to permit a desired quantity of return air to exhaust from the HEPA/VOC air handling system;
• when every measurement from the first chamber air sensor system is within the first predetermined threshold parameter values, then the controller, at least partially, opens a first chamber damper to permit a desired amount of mixed air to enter into the HEPA filter to form filtered mixed air and when at least one measurement from the first chamber air sensor system is outside the first predetermined threshold parameter values, then the controller, at least partially, opens a first chamber exhaust damper to permit a measured amount of mixed air to exhaust from the HEPA/VOC air handling system in order for the remaining mixed air combined with additional mixed air to increase a the chance the first chamber's mixed air will be within the first predetermined threshold parameter values;
• (d) evaluates the measurements of the air handling air sensor system to the second predetermined threshold parameter values regarding the filtered mixed air's air pressure, CO2 levels, humidity and temperature and when every measurement from the air handling air sensor system is within the second predetermined threshold parameter values, then the controller opens a second chamber damper to at least partially permit a measured amount of filtered conditioned mixed air to enter into the room and when at least one measurement from the air handling air sensor system is outside the second predetermined threshold parameter values, then the controller opens an air handling exhaust damper to at least partially permit a desired amount of filtered conditioned air to exhaust from the HEPA/VOC air handling system in order for the remaining filtered conditioned air combined with additional filtered conditioned air to increase a chance the air handling units filtered conditioned air will be within the second predetermined threshold parameter values.