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.
Claims2
A method for detecting a calibration offset error in one or more thermostats of a pneumatic thermostat HVAC system, each of the thermostats having a pressure sensor on a branch pressure line, the method comprising:
- a. recording the ambient room temperature;
- b. calculating a theoretical neutral pressure;
- c. measuring a pressure reading from the pressure sensor;
- d. changing a setpoint on the pneumatic thermostat to a different value;
- e. repeating steps a through d for several setpoints;
- f. calculating a calibration error by analyzing the measured branch pressures compared to the theoretical neutral pressures based on setpoints and ambient temperatures.
A method for detecting system failure of a pneumatic thermostat HVAC system comprising a plurality of thermostats, each of the thermostats having a pressure sensor on a main pressure line, the method comprising:
- a. monitoring the pressure readings from the pressure sensors;
- b. detecting an increase in pressure indicative of a compressor recharging the pressure in the main pressure line;
- c. repeating steps (a) and (b) until an expected average time interval between detected increases in pressure in the main line in determined;
- d. then, comparing the average time interval to an actual time interval between detected increases in pressure in the main line;
- e. signaling an alert if the following condition is met:
- (actual time interval+an error tolerance)>(expected average time interval).
Dependencies are inferred from the claim text.