degree day

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Thân thiện
degree day

A student receives her diploma on degree day.

Definition
  1. Noun:
    • A unit used in estimating fuel requirements for heating a building: A measure of how much heating is needed on a given day, calculated as the difference between a base temperature (often 65°F or 18°C) and the day's average outdoor temperature. It quantifies the demand for energy to heat a building.
    • The day on which university degrees are conferred: A ceremonial day, often called commencement or graduation day, when academic degrees are officially awarded to students by a university or college.
Usage Examples
  • Noun (Heating Unit):
    • The utility company uses degree days to forecast seasonal heating fuel demand.
    • A colder winter with many degree days will result in higher heating bills.
  • Noun (University Ceremony):
    • All the graduates wore their robes on degree day.
    • The ceremony on degree day is a proud moment for families.
Advanced Usage
  • "Heating degree day (HDD)": A specific type of degree day used to estimate heating needs. One HDD is recorded for each degree that a day's average temperature is below a reference point (e.g., 65°F).
    • Accumulated heating degree days help energy analysts compare the severity of winters.
  • "Cooling degree day (CDD)": A unit used to estimate the energy needed for cooling a building, based on temperatures above a reference point.
    • The hot summer led to a record number of cooling degree days.
Variants and Related Words
  • Degree-day: Often written with a hyphen.
  • Heating degree day (HDD): A common variant in meteorology and energy sectors.
  • Cooling degree day (CDD): The counterpart for estimating air conditioning demand.
  • Growing degree day: A related concept in agriculture that measures heat accumulation to predict plant development rates.
Synonyms
  • For the heating unit: Thermal unit, heating unit.
  • For the university day: Graduation day, commencement day, convocation.
Related Phrases
  • "Accumulated degree days": The sum of degree days over a period, such as a month or season.
    • The total accumulated degree days for January were well above average.
  • "Base temperature for degree days": The reference temperature used in the calculation.
    • The study used a base temperature of 18°C to calculate degree days.
Related Idioms
degree day

A student receives her diploma on degree day.

Noun
  1. a unit used in estimating fuel requirements for heating a building
  2. the day on which university degrees are conferred

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