US 2026/0210575 A1 · COMPRESSOR STAGING CONTROL ARCHITECTURE FOR HOT GAS REHEAT SYSTEMS

Abstract

A method is provided for controlling a heating, ventilation, and air conditioning (HVAC) system. The method includes measuring a temperature and controlling a compressor of the HVAC system. The temperature is measured by a temperature sensor located between a metering device of the HVAC system and an evaporator coil of the HVAC system. The temperature is representative of a refrigerant temperature. The refrigerant temperature is a temperature of a refrigerant fluid flowing from the metering device to the evaporator coil. The compressor is controlled by control circuitry that is configured to perform the controlling in a dehumidify mode based, at least in part, on a value of a humidity parameter of air of an airflow through an evaporator coil and a reheat coil, where the value is determined using the temperature.

Claims20

Dependent claims

A method for controlling a heating, ventilation, and air conditioning (HVAC) system, comprising:

measuring a temperature, wherein the temperature is measured by a temperature sensor, the temperature is representative of a refrigerant temperature, and the refrigerant temperature is a temperature of a refrigerant fluid flowing from a metering device to the evaporator coil;
and
controlling a compressor of the HVAC system, wherein the HVAC system further comprises a reheat coil and a condenser coil, the compressor, the metering device, the evaporator coil, the reheat coil, and the condenser coil are in fluid communication with one another, with respect to the refrigerant fluid, the compressor is controlled by control circuitry, the control circuitry is configured to perform the controlling in a dehumidify mode based, at least in part, on a value of a humidity parameter of air of an airflow through the evaporator coil and the reheat coil, and the value is determined using an adjusted value of the temperature that is different than a measured value of the temperature.

A non-transitory computer-readable storage medium, comprising program instructions for controlling a heating, ventilation, and air conditioning (HVAC) system, which, when executed by one or more processors, perform a method comprising:

measuring a temperature, wherein the temperature is measured by a temperature sensor, the temperature is representative of a refrigerant temperature, and the refrigerant temperature is a temperature of a refrigerant fluid flowing from the metering device to the evaporator coil;
and
controlling a compressor of the HVAC system, wherein the HVAC system further comprises a reheat coil and a condenser coil, the compressor, the metering device, the evaporator coil, the reheat coil, and the condenser coil are in fluid communication with one another, with respect to the refrigerant fluid, the compressor is controlled by control circuitry comprising the one or more processors, the control circuitry is configured to perform the controlling in a dehumidify mode based, at least in part, on a value of a humidity parameter of air of an airflow through the evaporator coil and the reheat coil and the value is determined using an adjusted value of the temperature that is different than a measured value of the temperature.

A heating, ventilation, and air conditioning (HVAC) system, comprising:

a hot-gas reheat dehumidification circuit, wherein the hot-gas reheat dehumidification circuit comprises an evaporator coil, a compressor, a reheat coil, and a metering device, the evaporator coil, the compressor, the reheat coil, and the metering device are in fluid communication with one another, with respect to a refrigerant fluid, and the metering device is in fluid communication with the evaporator coil via a refrigerant fluid line;
a sensor, wherein the sensor is positioned between the metering device and the evaporator coil such that the sensor is positioned to measure a parameter representative of a refrigerant fluid parameter of a portion of the refrigerant fluid flowing through the refrigerant fluid line;
and
a system control unit, wherein the system control unit is configure to measure the parameter, wherein the parameter is measured by the sensor, and control the compressor in a dehumidify mode based, at least in part, on a value of a humidity parameter of air of an airflow through the evaporator coil and the reheat coil,
wherein the value is determined using an adjusted value of the parameter that is different than a measured value of the temperature.

2 more elements

Dependencies are inferred from the claim text.

Compressor staging control architecture for hot gas reheat systems

Life of this patent

Compressor staging control architecture for hot gas reheat systems

Life of this patent

Abstract

Claims20