Comparative life cycle assessment of renewable energy systems for heating and cooling

Environmental analysis of geothermal heat pump and LPG greenhouse heating systems

“…, AP, EP, GWP and POCP (Table 5). Similar results were obtained from LCA studies on the low-enthalpy geothermal systems, although it has been b i o s y s t e m s e n g i n e e r i n g 1 2 7 ( 2 0 1 4 ) 1 1 e2 3 adopted using a lifetime of 80 years for drilling (Chiavetta et al, 2011). The contribution of the heat pump production is significant for all environmental indices (7e15%) ( Table 5).…”

“…The lifetime of the heat pump, photovoltaic panels, and electrical and structural components was assumed to be 20 years, while the lifetime of the borehole drilling and cementitious coating was assumed to be 50 years (Chiavetta, Tinti, & Bonoli, 2011;Rawlings, 1999). For both plants, testing and maintenance operations (washing of the panels) were excluded from the analysis.…”

Life cycle assessment of domestic heat pump hot water systems in Australia

“…Only 0.5 kWp 4 (or two 250 W solar PV modules) would be required to provide the same annual energy that Heat pump (grid) [1] Heat pump (grid/PV) [2] Heat pump (PV/ba .) [3] Solar heat pump (grid) [4] Solar heat pump (PV/grid) [5] Solar heat pump (PV/ba .) [6] Global Warming Poten al (kg CO 3 Heat Trap Solar Pty Ltd., personal communication, May 2016.…”

“…Several papers and reports have been published on the greenhouse gas emissions of heat pump hot water systems for other countries [4][5][6][7][8]. Some of these studies, as well as several Australian studies, did not include refrigerant losses [4,5,7,9,10] despite studies showing that refrigerant losses can be significant [6,8].…”

“…Some of these studies, as well as several Australian studies, did not include refrigerant losses [4,5,7,9,10] despite studies showing that refrigerant losses can be significant [6,8].…”