Efficient Regulation Technologies TRIZ Cases

See how a blower controller uses a stored mathematical model to relate motor speed to airflow p

See how discharge temperature sensing and dynamic control adjust refrigeration cycle parameters

See how a bi-directional port and dual heating mode reduce energy waste while providing immedia

See how dynamic fan speed adjustment based on ambient temperature and high pressure reduces ope

See how rotation speed monitoring of the blowing fan enables accurate frost detection, defrosti

See how staggered activation and gradual speed ramping of multiple fluid-motivating units reduc

See how a draught fan achieves constant air volume control by calculating target power from rot

See how temperature sensors and flow meters detect partial blockages in water heater circuits b

See how combined closed-loop and feed-forward control of bypass pump speed compensates for pres

See how coordinated compressor frequency and bypass injection valve control mitigate heating ca

See how a welded bushing intermediary distributes axial stress on the bearing inner ring, preve

See how a secondary-pressure chamber on the valve body reduces differential pressure influence,

See how a heating unit uses real-time setpoint and actual temperature differences to optimize h

See how a valve element with constant-diameter sealing surface and control apertures simplifies

See how estimating gaseous refrigerant flow into the receiver prevents excessive compressor wea

See how dual-pressure comparison with saturation gas pressure and compressor-stop baseline dete

See how dual-pressure comparison using reference pressure and saturation gas pressure enables a

See how dynamic speed-range control and feedback-based actuator adjustment maintain refrigerant

See how chillers generate their own efficiency curves by measuring temperature and power across

See how separating supply and exhaust fan units with independent speed control and airflow dete

See how evaporator heater activation and fan sequencing open a closed thermostatic expansion va

See how relocating the balancing channel from the screw to the valve head flange simplifies mac

See how a composite valve needle assembly combines metal structural strength with a soft sealin

See how dynamic compressor frequency limiting based on outlet-to-tank temperature difference pr

See how an HVAC controller validates refrigerant sensors by checking compressor inactivity, run

See how a wearable device detects body parameters to trigger a pre-defined sleep wind control c

See how a fixed-speed startup phase enables smooth transition to variable speed, reducing compr

See how a bearing between screw and valve needle transforms single-point sliding friction into

See how a hybrid control activates the compressor before maximum fan speed, reducing energy use

See how multi-tiered validation checks with pre-requisite criteria and 100% compressor operatio

See how dual-controller rotation number selection balances capacity optimization and device pro

See how alternating compressor and fan operation in four steps maintains uniform temperature wh

See how periodic refrigerant charge transfer cycles between evaporator and condenser enable acc

See how outdoor unit self-learning from compressor runtime and on/off signals enables variable

See how segmented outdoor coils with independent expansion valves maintain safe refrigerant pre

See how PWM-controlled pump and heating adjustments during diverter valve transitions prevent h

See how dynamic circulation flow rate adjustment maintains heat medium temperature within range

See how an expansion valve uses a mounting stroke twice the operating stroke to enable pre-posi

See how switching a decompressor between two states and measuring current change eliminates ins

See how discharge temperature detection and adaptive parameter control maintain stable refriger

See how a pressure-activated device and staggered fan-compressor restart reduce equilibration t

See how upstream temperature sensing at the compressor discharge port prevents HFO-1123 disprop

See how dividing compressor on-cycles into intervals and comparing current values enables rapid

See how a controller determines power-input sensitivity as a function of lift to dynamically ad

See how dynamic fan and compressor control activates mechanical cooling before maximum fan spee

Learn how threshold-based discharge temperature and pressure control prevents zeotropic refrige

See how pressure-based enthalpy detection enables accurate refrigerant balancing across outdoor

See how activating an evaporator heater before compressor restart equalizes pressure across a c

See how fan speed control based on refrigerant-to-air temperature difference stabilizes heat pu

A magnetic shaft speed sensor replaces fragile airflow sensors and shuts down HVAC heating or cooling when blower speed falls too low.

Voltage or current modulation on the AC supply enables compressor and thermostat data exchange with one cable, cutting wiring and hardware cost.

Variable compressor and flow control let each usage unit meet its water temperature setpoint without forcing the whole heat pump to run colder.

Coordinated control links parallel condensing units to balance compressor loading, cut energy use, and improve temperature control.

An ASD uses motor speed and power mapping to detect compressor surge early and open a bypass valve without multiple sensors.

Fan motion signals let the control circuit reduce or stop compressor power when airflow drops, preventing refrigerator overheating.

Ambient-temperature switching lowers condenser fan speed when the compressor is off, cutting refrigeration energy use without losing airflow.

A linear enthalpy model sets variable-speed compressor output to remove excess heat load without over-cooling or lengthy tuning.

When pipe length is unknown, operating data and initial charge are used to calculate the added refrigerant needed to reach a standard state.

Modular cooling units combine free cooling, chiller bypass, and pressure control to simplify data center expansion and cut installation complexity.

Separating oil-bearing and oil-free refrigerant loops allows longer, wider connection pipes while preventing compressor oil shortage and noise.

Variable motor speeds matched to water temperature and heat-source state cut wasteful pump power while maintaining minimum circulation.

An insulated ice compartment uses freezer air, separate temperature control, and damper de-icing to enable door ice dispensing in bottom-mount refrigerators.

When fan blades stall from ice, snow, or debris, the controller boosts motor torque based on rotation sensing to restore operation and avoid service calls.

Dual feedback control adjusts each compressor from cascade condenser and storage temperatures to reach stable cooling faster.

Motor power and speed are matched to stored operating curves so an EC ventilation fan can hold target airflow without pressure or flow sensors.

An outdoor unit self-adjusts inverter compressor frequency from current and operating parameters, avoiding sync failures between indoor and outdoor units.

Power-use sensing identifies ceiling fan and light modes behind pull-chain limits, guiding user switching for more flexible control.

Square-root scaling of the control signal linearizes centrifugal pump pressure control, reducing overshoot across changing operating points.

Parallel comparison of neural network outputs with legacy control software helps validate predictive models without replacing existing environment controllers.