Heat Pumps TRIZ Cases

See how a large-diameter tube between heat exchanger and accumulator collects refrigerant durin

See how multi-zone condensers with throttled refrigerant flow enable rapid heating of selected

See how a four-way valve integrates sensors, bypass channels, and segmented valve functions to

See how a pressure exchanger recovers energy between high- and low-pressure refrigerant streams

See how a ventilated jacket pipe with activated carbon and suction fan dilutes refrigerant leak

See how a rotary inner housing merges heat pump, battery, and motor cooling circuits into one v

See how exclusive spring-element mounting and fluid-line connection decouple the compressor fro

See how a controller calculates heating time, adjusts heat pump and supplemental heater schedul

See how a wastewater tank and three-medium heat exchanger transfer residual heat to accelerate

See how a pressure exchanger recovers energy between heating and cooling cycles, reducing throt

See how a dual-circuit heat pump uses a distributor and controller to redistribute refrigerant

See how a shared outdoor unit with four-way valve switching merges air conditioning and refrige

See how serpentine fluid line routing with 180° direction changes in three planes decouples com

See how predictive control uses future demand estimation to keep heat pumps in combined mode lo

See how a pressure exchanger transfers energy between high- and low-pressure fluid streams, eli

See how a bypass circuit and frequency control stop the air-sending device at night, reducing n

See how a controllable heat exchanger dynamically couples evaporator and condenser circuits to

See how a funnel-shaped base plate with siphon and adsorbent-filled shafts removes condensate a

See how differential melt-rate brazing layers in heat exchanger headers ensure uniform joining

See how a variable metering device replaces four-way valves to reverse heating and cooling mode

See how thermally connected HP circuits operating at different pressure differentials reduce co

See how a controller balances renewable and grid power by dynamically reducing compressor load

See how a valve-switched heat exchanger acts as both falling film evaporator and condenser, red

See how a three-fluid heat exchanger with thermal energy storage enables selective compressor o

See how an exhaust heat exchanger recovers thermal energy from exhausted facility air by transf

See how silane compounds with glycidyl or isocyanate groups scavenge acids, prevent iodine corr

See how a control system modulates heat pump power in real-time based on solar production and w

See how a heat sink with a raised central region surrounded by voids reduces thermal non-unifor

See how a single rectifier and intermediate circuit control multiple heat pump motors, reducing

See how ambient-based defrost termination eliminates basepan heaters in heat pumps, reducing co

See how a dual circuit heat pump replaces mechanical compression with CO2 phase change, cutting

See how silane compounds with glycidyl or isocyanate groups scavenge acids in refrigeration oil

See how series heat exchanger operation and dual expansion valve control prevent two-phase refr

See how negative pressure steam generation eliminates compressors and enables distributed insta

See how a dual-receiver assembly with fixed and variable volumes adjusts refrigerant charge bet

See how a hybrid heating device uses an encapsulated flow channel and heat exchanger housing to

See how a discharge pipe assembly with one-way valves prevents pipe rupture during heat pump sh

See how an elastic wire outlet seal compressed between box body and cover reduces gaps around w

Learn how integrated suction gas heat exchanger sections and balanced interplate flow channels

See how synchronous and asynchronous operation modes balance chamber temperature stability with

See how a heat pump water heater prevents evaporator frost by directing ambient air and heating

See how separate vapor and liquid loops with an expander replace throttle valves to improve hea

See how replacing an expansion valve with a rotatable expander enables isentropic expansion, po

See how gas-phase catalytic dehydrofluorination produces near-azeotropic HFO-1234ze and HFO-123

See how upstream and downstream protective layers shield the main adsorber from water and conta

See how cascaded heat exchangers and dual expansion turbines recover cold energy from both LNG

See how metal-organic framework MOF-200 replaces spherical activated carbon in CO2 adsorption h

See how a heat pump control system switches between hybrid and renewable modes to maximize sola

See how motor-controlled pressure exchangers replace conventional pumps and compressors to redu

Idle heat exchangers are isolated and cleared with hot refrigerant gas to keep charge balanced across heat pump operating modes.

A closed-loop geothermal well uses solid-state heat conduction and insulation to generate electricity without water injection, scaling, or deep-well heat loss.

Multiple heat pumps and heat-source mixing let one system match fluctuating source temperatures to varied hot-water demand.

Multiple heat pumps and selective heat-source mixing match varying renewable source temperatures to hot water demand levels.

Variable refrigerant routing with bypass and hot-gas valves enables cooling, heating, and partial defrosting in an outdoor heat exchanger.

When only cooling or hot water is requested, the controller can trigger the other function under set conditions to recover waste heat and save energy.

During defrosting, the low-temperature circuit releases heat through the cascade exchanger to shorten defrost time while keeping hot water stable.

Waste heat from refrigerated-space cooling is reused through dual heat exchange loops to support space heating and hot water with lower energy use.

An upper-mounted pipe unit and split seal case keep refrigerant branches supported when the lower case is removed, speeding maintenance.

Pressure-driven outlet switching in a liquid receiver matches refrigerant circulation to compressor speed, improving heat pump efficiency.

Uses precipitation and dissolution of liquid-solid refrigerants to move heat with low-temperature input and lower energy use.

Balances low- and high-stage refrigerant temperatures and flow to improve heating efficiency while protecting heat exchangers.

Closed-loop geothermal boreholes and an intermediate heat pump reject condenser heat without cooling towers, cutting water use and energy demand.

By holding condensing temperature below 40°C during mixed cooling and heating, this dual-cycle heat pump cuts compressor power and balances load.

Fixing the pipe unit to the upper seal case prevents sagging when the lower case is removed, enabling easier air-conditioner maintenance.

Selective refrigerant injection and bypass control maintains supercooling and circulation, improving heating and cooling in extreme temperatures.

A throttle-controlled battery heat exchanger uses spare outdoor heat-exchange capacity to recover battery heat and cut compressor load.

Selectable cooling and heating speed sets let one heat pump match unequal climate loads while improving efficiency and reducing retrofit cost.

Parallel spiral tubes with different radii and pitch improve shell-side flow distribution and heat transfer in a compact air-conditioner exchanger.

Using water and a dynamic compressor, this heat pump cuts overheating and harmful refrigerants while raising efficiency through power recovery.

Using HFE-356mmz and HFIP, this azeotropic blend keeps vapor and liquid ratios aligned to stabilize heat pump cooling and cleaning.

Turbulence generators and vapor lamination improve condenser heat transfer, cutting heat pump size without losing output.

Alternating dehumidifying members remove liquid absorbent from refrigerant before compression, cutting corrosion and liquid compression without external heating.

A processor starts and stops building cogeneration from heat demand, fuel cost, and live electricity rates to cut wasted generator heat.

Multi-frequency PWM creates reflux current to heat the compressor efficiently while limiting motor rotation and electromagnetic noise.

A bypass valve redirects refrigerant between heat exchange units to switch cooling and heating modes while improving defrosting uniformity.

Real-time heat pump power adjustment follows stable surplus photovoltaic power to cut reverse flow, lower energy waste, and support grid stability.

Faucet-fed heat exchange plus electric boosting raises room air above 120°F for thorough pest killing without damaging structures or contents.

Timed fan, compressor, and reversing valve delays cut transient defrost noise in split heat pumps while preserving frost removal.

Variable-speed cascade compressors and a heat exchanger raise cold-climate heating COP by reducing compression work and temperature overlap.

Mode switching between two chopper circuits shares current at high power to cut input current variation, losses, and temperature rise.

Using water vapor in an open cycle, this heat pump cuts refrigerant harm and heat-exchanger losses through low-pressure compression.

Valve-controlled pool cooling and heat pump flow maintain stable pressure in hot climates, improving cooling efficiency and pool water temperature.

Variable earth-loop pump control matches heat pump demand, cutting circulator energy use while maintaining required heat exchange.

A R134A-dominant blend with small R32 and R125 additions lowers operating pressure, cutting power use and compressor wear in inverter heat pumps.

A single-pass boring head and hollow shaft place geothermal conduit loops in dense soil or rock while fluid and bentonite cement protect and secure them.

Multi-valve refrigerant routing keeps the compressor running during defrost, limiting exterior condenser frost and reducing PTC heater power use.

An integrated absorption heat pump water heater cuts exchanger and pump complexity while recovering flue gas heat for higher condensing efficiency.

A water-cooled bypass recovers waste heat from vehicle electric devices and indoor air to maintain subzero heating with less electric heater use.

A control unit switches the heat pump off when running losses exceed restart losses, improving COP without extra sensors or manual hysteresis tuning.

Reversible oxoacid reactions store industrial waste heat in a transportable medium, enabling high-density thermal storage and later heat release.

Reversible oxoacid condensation and hydrolysis store waste heat in a transportable medium and release it later with high energy density.

A split water-flow path and controller raise heat pump heating efficiency by matching exchanger flow to refrigerant temperature and target water temperature.

High-frequency phase switching in a three-phase inverter heats compressor refrigerant uniformly while reducing noise and rotor-position effects.

Refrigerant temperature feedback adjusts compressor power to stabilize heat pump drying, prevent overload, and reduce energy use.

Independent refrigeration cycles with shared water heat exchangers prevent compressor oil imbalance and keep heating or cooling stable during defrost.

Pressure-triggered switching between condenser circuits keeps pool heat pumps in a stable operating range without complex water-flow regulation.

Selectable cooling and heating speed sets let one heat pump match unequal climate loads without replacing existing thermostats or wiring.

A reinforcing grid protects conductive heat exchangers in natural water flow, limiting debris damage while improving heat pump energy balance.

Recovered drive-source waste heat boosts heat pump heating, indoor air heating, and dehumidifier regeneration to cut energy use.

Waste heat from an electromechanical actuator is routed through a heat sink and transfer path to de-ice aerodynamic surfaces with less onboard power.

A geothermal heat-transfer loop boosts exhaust-air heat pump output for building heating and also enables efficient summer cooling.

A bypass feeds rich solution and injected refrigerant directly to the generator, raising heat pump output temperature and thermal power in cold conditions.

A reversible HVAC case where the outdoor heat exchanger doubles as refrigerant storage, cutting receiver size while relieving thermal expansion pressure.

Bleeding condenser refrigerant into the rich solution helps an absorption heat pump deliver water above 65°C with steadier efficiency in extreme conditions.

An intermediate heat exchanger and lamination valve prevent flash evaporation during burner modulation, preserving heat recovery in absorption heat pumps.

A blended HFC-125, HFC-32, HFC-134a, and HFO-1234ze refrigerant enables 60-65°C hot water without excessive compressor pressure or discharge temperature.

By adjusting the electronic expansion valve to a target subcooling value from pressure and compressor speed, this case helps maintain high COP.

Using water across three pressure zones, this heat pump replaces R134a and throttling losses with turbine-generated electricity and higher heating output.

Separate fan, compressor, and coil modules create flexible airflow paths that ease retrofits, fit tight spaces, and lower distribution cost.

An electronic expansion valve adjusts refrigerant injection to cap hot gas temperature and protect compressor oil at low outdoor temperatures.

Pilot pressure regulation enables smooth refrigerant flow reversal, cutting heat loss, flood backs, impact noise, and valve power use.

A three-way hot gas bypass feeds all exterior heat-exchanger tubes for complete defrosting in 30-100 seconds while reducing compressor stress.

Exhaust-gas heating replaces the external heat exchanger in heat pump mode, preventing icing and sustaining cabin heat at low temperatures.

An impermeable sump traps water around buried heat exchange pipes, maintaining thermal contact when the natural water table drops.

Using water as the working fluid, this open heat pump cuts refrigerant impact and compressor losses through low-pressure evaporation and direct condensation.

A regenerator applies, solidifies, and peels absorption liquid on a heat exchanger to prevent absorber crystallization and recover melting heat.

A high-temperature heat pump uses an HFO-rich refrigerant blend to maintain heat transfer above 70°C while cutting global warming potential below 150.