Energy Management
  • Introduction
  • Context and Motivation
  • Thermal Concepts
    • Temperature
    • Convection
      • Heat Capacity
      • Latent Heat
      • Demonstrations
    • Radiation
    • Conduction
    • Thermodynamics
  • Financial and Economic Considerations
    • Financial Considerations
    • Time Value of Money
    • Energy Cost Metrics
  • Modeling
    • Energy Modeling Definitions
    • Heated Enclosure
    • Computation
    • Computation Fundamentals
    • Circuit Models
  • Building Applications
    • Heating and Cooling Degree Days
    • Convection in Buildings
    • Heat Pumps
    • Practical Elements
    • Passive Design Elements
    • Thermal Mass
  • Solar Energy
    • Solar Angles
    • Solar Energy Estimations
  • Combustion
  • Physics Fundamentals and Miscellaneous
    • Efficiency Elements
    • Raw Lecture Notes
    • Examples
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  • HSPF

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  1. Building Applications

Heat Pumps

PreviousConvection in BuildingsNextPractical Elements

Last updated 5 years ago

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Heat pumps use the vapor-phase compression cycle to move thermal energy from a cold place to a hot place, in the opposite flow of nature. These are usually powered by electricity

SEER

The efficacy of the movement of heat to the consumption of electricity for cooling is quantified by the Seasonal Energy Efficiency Ratio (SEER).

SEER=BTU cooling providedWatt-hours of electricity expendedSEER = \frac{\textrm{BTU cooling provided}}{\textrm{Watt-hours of electricity expended}}SEER=Watt-hours of electricity expendedBTU cooling provided​

HSPF

The ratio of electricity required to the heat moved is given by the Heating Seasonal Performance Factor (HSPF).

HSPF=BTU heating providedWatt-hours of electricity expendedHSPF = \frac{\textrm{BTU heating provided}}{\textrm{Watt-hours of electricity expended}}HSPF=Watt-hours of electricity expendedBTU heating provided​