3 Interpreting the Results
The results of this project are presented in template form to allow easy comparison of the various heating options. Most of the criteria used in the templates are self-explanatory, but there are a number of abbreviations and technical terms used that may not be familiar to all readers. The most significant of these are explained below.
Measurements of energy:
KWh: kilowatt hour
L/KWh: litre per kilowatt hour
W/m2: watt per metre squared
mg/MJ: milligrams per megajoules
g/kg: grams per kilogram
Particulate emissions:
PM10: particles measuring less than 10 microns in diametre
PM2.5: particles measuring less than 2.5 microns in diametre
Greenhouse gas emissions:
CO2: carbon dioxide
NOx: oxides of nitrogen
SOx: oxides of sulphur
Other emissions:
CO: carbon monoxide
Embodied energy: energy used during the production and use of the good
Efficiency of conversion of energy to heat: how much energy in fuel is converted to heat
Heating capacity: the amount of heat produced by the appliance measured in kilowatts
Heat-transfer system: ventilation system which extracts air from a warm room and channels it to a cold room. For this system to be feasible the space heater in the warm room must have sufficient heating capacity.
