A low communicating port and elevated control components keep refrigerant out of the electric box, improving safety and reducing maintenance.
Water or antifreeze loops isolate refrigerant from occupied rooms, limiting leak concentration while allowing simultaneous cooling and heating.
Motor current feedback reverses the cooling fan to clear debris and warns when heat exchanger blockage persists in agricultural vehicles.
Winter air cools and stores water for later heat exchange, cutting peak summer cooling energy use and greenhouse gas emissions.
An adjustable opening and pressure sensors extend airflow and ventilation resistance measurement across wide ranges without multiple nozzle sizes.
Timed and feedback-based fan on/off control limits airflow loss through the outdoor heat exchanger while protecting compressor reliability.
Predict suction and discharge pressure from compressor operating state, voltage, current, and ambient data to cut HVAC sensor cost and complexity.
Coordinated control of parallel motor-operated valves uses compressor discharge and branch temperatures to stabilize refrigerant flow and heat exchange.
A parabolic fan-speed model uses compressor inlet and outlet refrigerant conditions to cut condenser energy waste at partial load.
Motor-operated receiver venting balances excess refrigerant across parallel heat-source units to prevent overflow and liquid compression.
Closed-loop heat transfer around a phase change cell stabilizes thermal mass temperature and improves sensor calibration against drift.
Upstream and downstream temperature sensing adds restart delay and soft loading to curb low-load compressor cycling, wear, and freezing.
A bypass and dedicated storage unit collect refrigerant during pump down, preserving cooling capacity without increasing refrigerant fill.
A central controller interrupts shared power or network signals to shut down all facility fans at once, reducing alarm wiring complexity and errors.
A sealed, conditioned attic acts as a thermal buffer, cutting home cooling energy use while limiting mold and roof heat gain.
Multiple parallel pumps run at reduced speed to maintain stable chiller flow at part load while cutting HVAC pumping energy and wear.
Fan speed or torque is adjusted from motor current or pressure feedback to hold target HVAC airflow despite duct restrictions and filter changes.
A dry-gas intermediate chamber pre-chills or post-heats wafers to prevent condensation after cold ion implantation transfer.
A rotatable switching unit redirects heated air to upper vents and cooled air to lower vents, improving room temperature distribution and energy use.
Sensors and dew point control let a refrigerator shed anti-sweat heater load during peak demand without causing mullion moisture or dripping.
Warmed water leaving the cooling coil is reused to reheat dehumidified air, cutting reheat load and improving chiller efficiency.
A heat-pipe dehumidifying section with insulation and heat absorption boosts moisture condensation while cutting power use.
Separating inlet air into process and bypass streams keeps discharge humidity low while reheating airflow for effective drying at high ambient conditions.