Heat Pumps TRIZ Cases

Waste exhaust heat drives a desiccant cooling loop that lowers rider temperature and humidity without heavy thermoelectrics or high current draw.

Solar and geothermal loops temper the heat pump working fluid to raise COP and cut fossil fuel use in building heating and cooling.

Refrigerant injection with dual internal heat exchangers keeps heat pump water heating stable in low ambient temperatures and varying loads.

Dual refrigerant injection between compression chambers raises flow rate and heating capacity in cold conditions without larger outdoor units.

Residual refrigerant heat is routed through a bypass path to melt outdoor coil frost without reverse-cycle defrost or supplemental heating.

Adaptive heat pump control sets flow temperature from outdoor conditions while ignoring sensor readings during defrosting to avoid false settings.

Separate four-way valving enables heat recovery modes in a heat-pump chiller while cutting pressure drop and limiting refrigerant piping.

A subcooler and valve layout stores excess refrigerant during heating mode while limiting trapped-liquid pressure and receiver size.

By reversing compression in an open-cycle water heat pump, cooling is delivered while the dynamic compressor generates electrical energy.

Controlling gas cooler pressure and refrigerant overheating helps a transcritical CO2 heat pump deliver water up to 150°C with better COP.

Series switching of main and sub heat exchangers evens refrigerant flow during heating, helping each exchanger work effectively as an evaporator.

Expansion valve control balances subcooling and superheat to stabilize refrigerant recovery in heating and prevent accumulator evaporation.

Recycles low-temperature vapor through falling film absorption heat pumping to recover latent heat and produce useful mid-temperature vapor.

A refrigerant blend of R-1234ze, CO2, and light hydrocarbons lowers global warming potential while reducing flammability and preserving system compatibility.

Fan current and speed monitoring detects evaporator icing early, triggering defrost only when needed to maintain airflow and heat transfer.

Vapor refrigerant surges from a phase separator warm the evaporator inlet to cut frost buildup, improve heat transfer, and reduce defrosting.

A gas-pocket spike eliminator absorbs start-up refrigerant pressure surges in pool heat pumps, preventing compressor shutdown and heating loss.

Greywater heat recovery and thermal storage let a shared heat pump redistribute heat between washer and dryer to cut appliance energy use.

Waste heat from chiller refrigerant is transferred through staged subcoolers and condensers to raise water temperature while cutting heating energy use.

Brief periodic hot-gas defrost cycles limit frost buildup while reducing compressor stress, heat loss, and peak electrical demand.

Dual refrigerant circuits and discharge saturation temperature control enable stable high-temperature water heating without an auxiliary heater.

By adjusting the electronic expansion valve to target subcooling from pressure and compressor speed, this case keeps floor-heating COP stable.

A closed-loop heat pump uses a liquid jet-ejector, pump, and pressure reduction path to recycle energy and improve refrigeration efficiency.

A heat pump heats wash water while cooling a heat reservoir, cutting energy use and enabling efficient condensation drying with a smaller unit.

Bypassing the absorber feeds rich solution and liquid refrigerant into the generator to raise heat pump output and water temperature in cold conditions.

A phase-change heat pump drives a thermostrictive working medium to harvest low-temperature heat without a cold reservoir.

Smaller copper ground loops, high-pressure R-410A operation, and efficient oil separation cut land use, energy demand, and maintenance.

A heat source tower with secondary solar heat cuts winter frosting and energy use in subtropical heat pumps through small-temperature-difference transfer.

Supercritical CO2 circulates through natural reservoir pathways to extract geothermal heat at lower temperatures while avoiding hydrofracturing.

A water-cooled condenser uses motor and electronics waste heat to prevent frosting, improve cabin heating, and cut EV power use.

Preheating thermoplastic prepreg before press molding preserves random fiber isotropy at low charge ratios, cutting trimming waste and cycle time.

N-heterocyclic MOF ligands raise water uptake and hydrolytic stability, enabling adsorption heat pumps to run at lower humidity and regeneration temperature.

Column-shaped magnetic elements cut reluctance while improving heat exchange in magnetocaloric heat pumps with reciprocating heat medium.

A computed outlet-temperature model lets auxiliary heat in a heat pump run without dedicated sensors or extra wiring, cutting cost and noise.

A dual-refrigerant cascade heat exchanger speeds hot water heating while maintaining air conditioning in one heat pump circuit.

Dedicated condenser and evaporator circuits enable multi-mode geothermal heating and cooling while reducing borefield flow and fluid mixing.

Selective refrigerant valving and an external heat exchanger let one chiller switch modes, recover heat, and avoid high reversing-valve pressure drop.

A CO2 absorbent cycle cuts low-temperature heat conversion losses by using absorption and desorption to generate electricity and cooling.