The Heat Pump and Heat Transfer (Leaving Cert Physics): Flashcards

Moves heat from cooler to warmer place

High latent heat, low boiling point, closed circuit

Heat through solids without material moving

Heat through fluids by actual fluid movement

Warm fluid rises, cool fluid sinks

Heat transfer without material, even through empty space

$3 \times 10^8$ m/s (speed of light)

Excellent at absorbing & emitting heat

Reflect heat radiation away

Heat per sec through 1 m² with 1°C difference

W m⁻² K⁻¹

Poor insulator (lots of heat gets through)

Good insulator (little heat gets through)

$P = A \times U \times \Delta T$

$\frac{\text{useful output}}{\text{input}} \times 100\%$