System and method for conducting heating, ventilation, and air conditioning analytics
AssigneeCypress Envirosystems, Inc.
InventorsMarcus Kramer, Moses Derkalousdian
Life of this patent
Estimating the term…
Abstract
A system and method for conducting heating, ventilation, and Air Conditioning Analytics is disclosed. The system uses one or more wireless pneumatic thermostats (WPT) and/or various other sensors in communication with a control device to maintain, troubleshoot, calibrate, optimize, or otherwise adjust an installed pneumatic HVAC system.
Claims18
An HVAC system comprising:
- at least one pneumatic thermostat having a throttle slope, a pressure sensor on a branch pressure line and an ambient temperature sensor;
- and
- a processor connected to the pressure sensor and the temperature sensor, the processor configured to perform the following steps:
- a. recording an ambient room temperature from the temperature sensor;
- b. recording a branch line pressure from the pressure sensor;
- c. recording a setpoint value;
- d. changing the setpoint value to a different value;
- e. repeating steps a through d for a plurality of setpoints values;
- f. for each setpoint value in the plurality, calculating an expected pressure based on the recorded setpoint value, the throttle slope and the recorded ambient room temperature;
- g. for each setpoint value in the plurality, analyzing the difference between the expected pressure and the recorded pressure in order to determine if the system is behaving as expected;
- and
- h. when the system is not behaving as expected, signaling an alert and compensating for the unexpected behavior.
A non-transitory computer usable medium having computer readable program code embodied therein for self-diagnosing an HVAC system having at least one pneumatic thermostat having a throttle slope, a pressure sensor on a branch pressure line and an ambient temperature sensor, the computer readable code comprising instructions for:
- a. recording an ambient room temperature from the temperature sensor;
- b. recording a branch line pressure from the pressure sensor;
- c. recording a setpoint value;
- d. changing the setpoint value to a different value;
- e. repeating steps a through d for a plurality of setpoints values;
- f. for each setpoint value in the plurality, calculating an expected pressure based on the recorded setpoint value, the throttle slope and the recorded ambient room temperature;
- g. for each set point value in the plurality, analyzing the difference between the expected pressure and the recorded pressure in order to determine if the system is behaving as expected;
- and
- h. when the system is not behaving as expected, signaling an alert and compensating for the unexpected behavior.
A method for self-diagnosing an HVAC system having at least one pneumatic thermostat having a throttle slope, a pressure sensor on a branch pressure line and an ambient temperature sensor, the method comprising:
- a. recording an ambient room temperature from the temperature sensor;
- b. recording a branch line pressure from the pressure sensor;
- c. recording a setpoint value;
- d. changing the setpoint value to a different value;
- e. repeating steps a through d for a plurality of setpoints values;
- f. for each setpoint value in the plurality, calculating an expected pressure based on the recorded setpoint value, the throttle slope and the recorded ambient room temperature;
- g. for each setpoint value in the plurality, analyzing the difference between the expected pressure and the recorded pressure in order to determine if the system is behaving as expected;
- and
- h. when the system is not behaving as expected, signaling an alert and compensating for the unexpected behavior.
Dependencies are inferred from the claim text.