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US 11,959,660 B2Granted
System and method for ventilating and dehumidifying a space
AssigneeKentuckiana Curb Company, Inc.
InventorsJordan Scott Reynolds, William Dale Keen
Life of this patent
Estimating the term…
Abstract
A dedicated outdoor air system (DOAS) includes an outdoor unit providing a temperature at a set dry bulb temperature and dew point temperature in a wide variety of outdoor air conditions. The DOAS monitors and modulates suction pressure and head pressure in order to maintain a dew point temperature of 45° F. for supplied air. Furthermore, the DOAS includes a hot gas reheat coil, allowing the system to heat the air to 73° F. before supplying the air to a space, even where outdoor air temperature is lower than 73° F. In one embodiment, the DOAS includes an energy recovery ventilator (ERV) in order to precondition the air to decrease the amount of energy needed to operate the DOAS in some conditions.
Claims20
A climate-control system, comprising:
- a refrigeration circuit including at least one compressor, a condenser, an expansion valve, an evaporator coil, and a hot gas reheat coil;
- and
- at least one first detector monitoring a head pressure of refrigerant exiting the at least one compressor and at least one second detector monitoring a suction pressure of refrigerant entering the at least one compressor;
- wherein the hot gas reheat coil is positioned between the at least one compressor and the condenser in the refrigeration circuit;
- wherein the climate-control system delivers air to a space at a dew point temperature of 45° F. or lower;
- wherein a capacity of the at least one compressor is modified through continuous modulation based on data produced by the at least one first detector monitoring the head pressure of refrigerant exiting the at least one compressor and the at least one second detector monitoring the suction pressure of refrigerant entering the at least one compressor;
- wherein the climate-control system is configured to reset the suction pressure of refrigerant entering the at least one compressor by automatically decreasing the capacity of the at least one compressor if the at least one second detector detects the suction pressure of refrigerant entering the at least one compressor is less than 105 psi;
- and
- wherein the at least one compressor includes at least one fan, wherein the at least one fan is configured to turn off when the at least one first detector detects the head pressure of refrigerant is below a preset threshold pressure.
6 more elements
A method of delivering air to a space, comprising:
- providing a unit, including a refrigeration circuit including at least one compressor, a condenser, an expansion valve, an evaporator coil, and a hot gas reheat coil;
- wherein the hot gas reheat coil is positioned between the at least one compressor and the condenser in the refrigeration circuit;
- and
- wherein the unit includes at least one first detector monitoring a head pressure of refrigerant exiting the at least one compressor and at least one second detector monitoring a suction pressure of refrigerant entering the at least one compressor;
- engaging in continuous modulation to modify a capacity of the at least one compressor based on data produced by the at least one first detector monitoring the head pressure of refrigerant exiting the at least one compressor and the at least one second detector monitoring the suction pressure of refrigerant entering the at least one compressor;
- at least one fan of the at least one compressor turning off when the at least one first detector detects the head pressure of refrigerant is below a preset threshold pressure;
- and
- the unit delivering air to the space at a 45° F. or lower dew point temperature.
5 more elements
A climate-control system, comprising:
- a refrigeration circuit including at least one compressor, a condenser, an expansion valve, an evaporator coil, and a hot gas reheat coil;
- wherein the hot gas reheat coil is positioned between the at least one compressor and the condenser in the refrigeration circuit;
- and
- at least one first detector configured to monitor a head pressure of refrigerant exiting the at least one compressor and/or at least one second detector configured to monitor a suction pressure of refrigerant entering the at least one compressor;
- wherein the at least one compressor is operable to engage in continuous modulation based on data produced by the at least one first detector monitoring the head pressure of refrigerant exiting the at least one compressor and/or the at least one second detector monitoring the suction pressure of refrigerant entering the at least one compressor;
- wherein the continuous modulation by the at least one compressor is performed by the at least one compressor alternating between loaded and unloaded states, wherein, in a loaded state, scrolls of the at least one compressor are interleaved, and wherein, in an unloaded state, the scrolls of the at least one compressor are not interleaved;
- and
- wherein the at least one compressor includes at least one fan, wherein the at least one fan is configured to turn off when the at least one first detector detects the head pressure of refrigerant is below a preset threshold pressure.
5 more elements
Dependencies are inferred from the claim text.