The document discusses the efficiency and use of renewable energy in gas absorption heat pumps for water, ground, and air sources. It provides efficiency percentages for each source type according to different operating conditions: 174% for water source, 170% for ground source, and 165% for air source. It also lists the equivalent percentages of renewable energy use for each source type, ranging from 33.3% to 36.3%. Finally, it gives total efficiency examples for each source when accounting for both fossil and renewable energy inputs.

1. EFFICIENCY AND RENEWABLE ENERGY UTILISATION IN GAS ABSORPTION HEAT PUMPS WATER SOURCE GAHP WS Operation conditions W10 – W 35 (Water temp. 10°C – Water temp. 35°C)‏ * : equivalent to 174 % according to EN 12309 GROUND SOURCE GAHP GS LT Operation conditions B0 – W 35 (Inlet cold water temp. 0°C Outlet hot water temp. 35°C)‏ * : equivalent to 170 % according to EN 12309 Energy input Heating capacity Based on Gross Calorific Value GAHP A LT Operation conditions A7 – W35 (Air temp. 7°C – Outlet hot water temp. 35°C)‏ * : equivalent to 165 % according to EN 12309 AIR SOURCE Equivalent to 33,3 % renewable energy Equivalent to 34,2 % renewable energy Equivalent to 36,3 % renewable energy GAHP (Gas Absorption Heat Pump): A (Air-Water), GS (Ground Source), WS (Water Source): LT (Low Temperature)‏ Total efficiency 157 * Fossil energy 100 Renewable energy 57 Total efficiency 152 * Fossil energy 100 Renewable energy 52 Total efficiency 150 * Renewable energy 50 Fossil energy 100