Heat Loss (Leaving Cert Construction Studies): Flashcards
📚Flashcards
Practise the cards
10 cards from this deck
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Practise the cards
10 cards from this deck
Purpose of heat loss calculations
Purpose of heat loss calculations
Determine energy performance & compliance with regulations
Unit used for heating period calculations
Unit used for heating period calculations
Seconds (multiply weeks, days, hours, mins, secs)
How to convert power (W) to annual energy
How to convert power (W) to annual energy
Multiply heat loss rate by heating period, then convert to kJ
Formula for fuel consumption
Formula for fuel consumption
Energy needed Calorific value
Elemental heat loss method
Elemental heat loss method
Examines individual building components separately
Overall heat loss method
Overall heat loss method
Building's thermal performance as a complete system
Compact buildings & U-values relationship
Compact buildings & U-values relationship
More compact buildings allow higher permitted U-values
Elemental method: max opening area as % of floor
Elemental method: max opening area as % of floor
30% maximum
Three primary heat gain sources
Three primary heat gain sources
Solar energy, internal heat, incidental heat from appliances
Standard glass total heat gain %
Standard glass total heat gain %
Approximately 81%