Heating Fuel TRIZ Cases

A shared heat pump and water loop recovers cooling waste heat for hot water and space conditioning, cutting separate gas and electric loads.

Overlapping heat pump startup with a separate heat source prevents indoor temperature dips and maintains comfort during heating switchover.

Heat-pump-fed floor panels circulate heat transfer fluid to deliver more uniform outdoor heating or cooling with lower energy use and maintenance.

A separate heat recovery condenser decouples the heating unit from the cooling condenser loop, raising heating temperature while preserving cooling efficiency.

By detecting and storing thermostat deadband limits, this retrofit enables remote water heater demand response without overheating or replacing the thermostat.

Independent heating elements and sensor-based power control keep tankless water heating stable while reducing circuit overload and grid burden.

Recirculating air through a supplemental heat source boosts cold-weather heat pump capacity and keeps the outdoor coil warmer for efficient operation.

A modular controller links main and extended units to match ground source heat pump loads without extra programming or port limits.

Series-connected heat sources and check valves handle different volume flows without 3-way valves or extra pumps, cutting losses and complexity.

Flow sensors and a check valve distinguish circulation from draw-off, cutting extra sensor cost in immediate hot-water supply control.

Stable-state sensing after defrost sets the next defrost entry time more accurately, reducing unnecessary cycles, noise, and power use.

A bypassed hybrid heating circuit lets the heat pump cover efficient base load while the boiler adds peak heat to cut cost and emissions.

A capacity-command controller switches between heat pump and gas furnace heating to cut CO2 emissions without unstable frequent changeovers.

Switching on outside temperature and heat pump capacity improves heating changeover timing, indoor comfort, and energy use.

By checking the temperature gap between hot water outflow and return flow, the system flags insufficient heat dissipation before heating comfort drops.

Heated water preheats refrigerant to sustain floor heating and hot water supply in extreme cold while improving heat exchange.

A controller adjusts heater duty cycle and start time to deliver hot water when needed while cutting storage heat loss and Legionella risk.

Periodic pump stopping and restart timing from water temperature changes cut heat-pump pump power use under low-load conditions.

A high-resistance communication tube routes expanded fluid from multiple loops to one expansion tank, cutting cost and preventing conduit damage.

A control unit switches between forward and reverse defrost cycles to avoid water-circuit freezing while maintaining outdoor heat exchanger defrosting.

Separate pumps and recovery channels let each thermal loop set its own fluid temperature and flow without losing shared heat exchange.

Decentralized buffer tanks coordinate heat demand and switching paths to cut district heating losses while maintaining hot water availability.

Localized low-resistance zones in the heat exchanger steer more air where needed, improving HVAC airflow distribution with less pressure drop.

Temperature and pump-current monitoring detect heat-medium leakage in intermediate heat exchanger air-conditioning circuits.

A vacuum food tray and circulating heated fluid improve heat transfer, shorten low-temperature cooking time, and reduce moisture loss.

Preassigned heater IDs enable automatic master-slave switching, preserving remote control and hot water supply after master failure.

A fuel heater, heat exchanger, and buffer tank are integrated into a compact air conditioner to deliver stable heating and cooling from -32°C to +60°C.

Direct water temperature is used to vary start and stop thresholds, improving multi-water heater efficiency under changing demand.

Bypass flow control keeps enough water moving through the heat exchanger to expel trapped air, prevent overheating, and deliver hot water promptly.

A Peltier-based thermal actuator shifts thermostatic valve behavior toward PI/PID control, cutting residual temperature error with fast response.

Multiple parallel tubes and shaped inlet-outlet chambers raise compressed-fluid temperature while maintaining reference pressure and avoiding head loss.

A hybrid heating control raises heat pump share by switching to an intermediate flow temperature when COP falls below boiler break-even cost.

By keeping the upstream tank hotter than the downstream tank, this flat water heater cuts mixing losses and reduces tank volume.

A control device varies the first heat generator flow temperature using return, outdoor, and cost inputs to cut heating energy use and CO2.

A designated bypass loop stays open when other heating loops close, preventing heat pump over-pressure without constant bypass flow.

An inclined flat tube plate keeps water circulating in a vertical fire-tube boiler, preventing stagnation, bubbles, noise, and balancing issues.

Historical and real-time flow demand trigger preheating and recirculation to cut hot water delay, stabilize temperature, and reduce energy waste.

A mechanical swirler stabilizes an induced-draft furnace flame without secondary air, cutting NOx while maintaining combustion efficiency.

Nested heat exchangers around a central extraction loop improve latent heat storage efficiency and flexible heating or cooling in smaller units.

A shear-responsive incompressible composite improves impact and sound damping by converting incident energy into heat without leaking or rebounding.

A process water tank nested in the liquefier uses a compressed vapor gap to cut insulation needs, heat loss, and system bulk.

A vertical coil heat exchanger heats supply water from the tank while preserving thermal stratification and improving hot-water output.

A wear-leveling control algorithm rotates auxiliary heat elements across cycles to balance use, preserve lifespan, and maintain heating output.

A third circuit and heat exchanger recover surplus heat from a first heat pump to preheat and heat tap water with lower boiler load.

A straight-chain and side-chain PFPE blend prevents fixing film lubricant drainage and fluororesin surface cracks, preserving image quality.

Outdoor temperature and pump-stop timing trigger heat-medium circulation before freezing, protecting pipes while limiting energy use.

Excess grid power is absorbed in hot water buffer storage via remotely controlled heating, reducing voltage fluctuations at low cost.

A controller compares heat pump and gas heating costs in real time to switch hot water supply to the lower-cost energy source.