Heat Pumps TRIZ Cases

Bus-voltage-corrected high-frequency inverter control heats compressor windings uniformly, reducing noise and preventing breakage.

Multi-stage condensers and subcoolers recover chiller waste heat to warm water with lower energy use and operating cost.

Low-grade waste heat is upgraded through refrigerant compression and heat exchange to generate 120°C+ steam with one exchanger.

High-temperature refrigerant heats the exterior heat exchanger through coolant storage, suppressing frost and enabling defrosting without engine waste heat.

A split refrigerant and heat-medium circuit keeps refrigerant outdoors, cutting indoor leak risk, conveyance energy, and installation complexity.

A Stirling-cooled ultra-low freezer cuts heat transfer and energy use while automating vial storage, retrieval, and temperature tracking.

Preheating and cooling refrigerant around serial radiators preserves temperature difference and COP when the heated medium enters hot.

Tube diameter, wall thickness, and fin pitch are tuned to keep CO2 pressure loss low while raising heat exchange per unit weight.

Geothermal heat transfer in subsurface vessels cools dense computer hardware with passive or fluid-assisted circulation, cutting cooling cost.

Parallel main and auxiliary heat exchanger flow control equalizes refrigerant temperature to cut frost and pressure loss during evaporation.

Sensor-triggered PCM recovery keeps a heat pump ready for successive appliance cycles, improving heat transfer while avoiding unnecessary energy use and noise.

A heat pump tracks stable photovoltaic surplus power to cut reverse grid flow, lower energy cost, and maintain efficient hot water operation.

Balancing superheat in a two-stage refrigeration cycle preserves compressor gas injection, raising COP and heating capacity in cold conditions.

A shared low-pressure refrigerant pipe lets EHP and GHP outdoor units use engine waste heat to defrost frost-covered exchangers with lower power use.

A heat pump pre-cools the absorbing medium before heat exchange, boosting low-temperature waste heat recovery with lower operating cost.

A subsurface containment vessel uses liquid circulation and earth thermal mass to cool dense electronics with lower energy use and maintenance.

By circulating fluid through an accumulator jacket and supercooling hub, cooling mode gains better refrigerant efficiency with lower indoor flow.

A gravity-fed compensation pipe replaces adjustable throttles to cut evaporation losses, noise, and failure risk in heat pumps.

Frost-triggered compressor reduction or shutdown uses ambient-air defrost to protect heating capacity and improve heat pump efficiency.

Bypass refrigerant flow control bridges staged parallel heat exchangers to deliver continuous heat exchange capacity without extra valves.

Two temperature-level thermal stores preheat feedwater and cut steam extraction, improving Rankine discharge efficiency in stored-energy systems.

Bypassing defrost refrigerant to compressor injection avoids two-phase mixing, cutting compressor load while maintaining heating during defrost.

A controllable ejector needle and 4-way valve switch refrigerant flowpaths to keep heat pump efficiency across cooling and heating modes.

Pressure-reducing state switching lets one heat pump cycle handle cooling, heating, and dehumidifying-heating with lower complexity and power use.

Sensor feedback trims main and bypass expansion openings to suppress discharge temperature spikes while preserving low-ambient heating capacity.

Dual regenerators with buffer tanks maintain continuous gas-gas heat exchange, cutting purge losses and improving thermal effectiveness.

Two adsorption devices fed at different vapor pressures cut sensible heat loss while sustaining cooling capacity in adsorption heat pumps.

A heat pump valve and bypass refrigerant path let one outdoor unit support both simultaneous and switching heating-cooling modes.

A refrigerant bypass keeps hot water supply and floor heating running during heat pump defrost while using one water-refrigerant heat exchanger.

Independent refrigeration cycles solve oil imbalance between parallel compressors, preventing burnout while keeping heat source units running.

A radiant floor loop and air-to-fluid heat exchanger store off-peak cooling in a slab, cutting peak-hour electricity use for building HVAC.

Off-peak cooling stored in a radiant floor slab cuts peak-hour AC use by transferring heat between duct air and circulating liquid.

Vapor refrigerant surges from a phase separator warm the evaporator inlet, cutting frost buildup while preserving heat transfer efficiency.

A gas refrigerant bypass around the outdoor heat exchanger sustains compressor discharge, cabin heating, and dehumidification in cold weather.

A secondary compressor override uses return-water temperature to prevent cold floors when air-temperature control switches heating off.

Closed-loop borehole heat exchangers and an intermediate heat pump cut refrigeration heat rejection water use while stabilizing condenser temperature.

Compressor discharge pressure is set from the highest unit temperature demand to balance refrigerant flow and subcooling across multiple usage units.

Reversing heat-medium flow after heating stops returns residual hot fluid to the storage tank, cutting waste, superheating, and clogging.

A second refrigerant cycle preheats outdoor air to delay frost on the outdoor heat exchanger and keep heating running without a separate defrost heater.

Engine waste heat and a low-pressure refrigerant link help defrost the outdoor exchanger while maintaining heating efficiency in cold conditions.

A switching valve routes recovered waste heat to heating or Rankine-cycle power generation, improving summer operation of absorption heat pumps.

Multiple adsorbents in series match changing water temperatures to sustain coolant adsorption and desorption efficiency in heat pumps.

Internal fins, smaller tube diameters, and tuned spacing cut refrigerant charge while preserving heat pump evaporator output.

A four-process displacer sequence with stationary periods raises Vuilleumier heat pump COP beyond three-process cycles.

Thin water films in plate-like conduits speed heat exchange with ambient air, cutting water volume and enabling efficient water source heat pumps.

A thermal reservoir shifts heat pump operation between day and night to raise heating COP, cut de-icing energy, and support CO2 refrigerant use.

An electromagnet-driven rotating baffle reverses refrigerant flow without high pressure, avoiding sticking, noise, and clogging.

A movable header separator reconfigures refrigerant passes between cooling and heat pump modes to cut pressure loss and reduce freezing risk.

A protective stop limits outlet blocking piece travel under refrigerant pressure swings, preserving flow area, sealing, and heat pump reliability.