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Vol. 8 (2021)

Decarbonization of Summer Cooling Energy Demands of Buildings Employing Absorption Systems in the Framework of Climate Change in Italy

September 26, 2021


Temperatures in the Mediterranean area have gradually risen in the last decades due to climate change, especially in the Italian Peninsula. This phenomenon has increased the cooling needs to ensure thermal comfort in buildings and, consequently, the use of refrigeration machines. Summer air conditioning is carried out mainly using compression machines powered by electricity supplied by the national network. All this contributes to the emission of climate-changing gases. To avoid this disadvantageous chain, compression machines could be replaced by absorption cooling systems powered by solar energy. The energy needs of the buildings in a time are directly proportional to the sum of positive differences between the outdoor air temperature and the indoor set point of the systems (equal to 26°C). The annual sum of hourly temperature differences defined above can be computed for each grid cell thanks to a numerical weather prediction model, namely the Weather Research and Forecasting model, that simulates the hourly temperatures on high-resolution computation grids and over fairly large extents. Maps of cooling consumption for buildings are thus produced. Choosing absorption solar energy-powered systems instead of vapor compression refrigeration systems leads to a drop in electrical energy consumption and therefore in emissions of greenhouse gases. In this work, different hypothetical scenarios of penetration of this technology have been considered. And the subsequent consumption of electricity withdrawn from the national grid has been estimated together with the reduction of greenhouse gas emissions.


  1. Gandini A, Quesada L, Prieto I, Garmendia L. Climate change risk assessment: A holistic multi-stakeholder methodology for the sustainable development of cities. Sustain Cities Soc 2021; 65.
  2. Ciancio V, Salata F, Falasca S, Curci G, Golasi I, de Wilde P. Energy demands of buildings in the framework of climate change: An investigation across Europe. Sustain Cities Soc 2020; 60: 102213.
  3. Marana P, Eden C, Eriksson H, Grimes C, Hernantes J, Howick S, et al. Towards a resilience management guideline - Cities as a starting point for societal resilience. Sustain Cities Soc 2019; 48: 101531.
  4. Coppi M, Quintino A, Salata F. Fluid dynamic feasibility study of solar chimney in residentail buildings. Int J Heat Technol 2011; 29.
  5. Ciardiello A, Rosso F, Dell'Olmo J, Ciancio V, Ferrero M, Salata F. Multi-objective approach to the optimization of shape and envelope in building energy design. Appl Energy 2020; 280.
  6. Imhoff ML, Bounoua L, Ricketts T, Loucks C, Harriss R, Lawrence WT. Global patterns in human consumption of net primary production. Nature 2004; 429: 870-3.
  7. Burattini C, Nardecchia F, Bisegna F, Cellucci L, Gugliermetti F, Vollaro A, et al. Methodological Approach to the Energy Analysis of Unconstrained Historical Buildings. Sustainability 2015; 7: 10428-44.
  8. McCarthy MP, Best MJ, Betts RA. Climate change in cities due to global warming and urban effects. Geophys Res Lett 2010; 37: 1-5.
  9. Pagliaro F, Cellucci L, Burattini C, Bisegna F, Gugliermetti F, de Lieto Vollaro A, et al. A Methodological Comparison between Energy and Environmental Performance Evaluation. Sustainability 2015; 7: 10324-42.
  10. Salata F, Alippi C, Tarsitano A, Golasi I, Coppi M. A first approach to natural thermoventilation of residential buildings through ventilation chimneys supplied by solar ponds. Sustain 2015; 7: 9649-63.
  11. Salata F, Golasi I, Domestico U, Banditelli M, Lo Basso G, Nastasi B, et al. Heading towards the nZEB through CHP+HP systems. A comparison between retrofit solutions able to increase the energy performance for the heating and domestic hot water production in residential buildings. Energy Convers Manag 2017; 138: 61-76.
  12. Salata F, Tarsitano A, Golasi I, de Lieto Vollaro E, Coppi M, de Lieto Vollaro A. Application of Absorption Systems Powered by Solar Ponds in Warm Climates for the Air Conditioning in Residential Buildings. Energies 2016; 9: 821.
  13. Salata F, Golasi I, Proietti R, de Lieto Vollaro A. Implications of climate and outdoor thermal comfort on tourism: the case of Italy. Int J Biometeorol 2017.
  14. Coppi M, Quintino A, Salata F. Numerical study of a vertical channel heated from below to enhance natural ventilation in a residential building. Int J Vent 2013; 12.
  15. Ciancio V, Falasca S, Golasi I, de Wilde P, Coppi M, de Santoli L, et al. Resilience of a building to future climate conditions in three European cities. Energies 2019; 12.
  16. Sobhani H, Shahmoradi F, Sajadi B. Optimization of the renewable energy system for nearly zero energy buildings: A future-oriented approach. Energy Convers Manag 2020; 224: 113370.
  17. Jiang A, Liu X, Czarnecki E, Zhang C. Hourly weather data projection due to climate change for impact assessment on building and infrastructure. Sustain Cities Soc 2019; 50: 101688.
  18. Roshan GR, Saleh Almomenin H, da Silveira Hirashima SQ, Attia S. Estimate of outdoor thermal comfort zones for different climatic regions of Iran. Urban Clim 2019; 27: 8-23.
  19. Rey-Hernández JM, Yousif C, Gatt D, Velasco-Gómez E, San José-Alonso J, Rey-Martínez FJ. Modelling the longterm effect of climate change on a zero energy and carbon dioxide building through energy efficiency and renewables. Energy Build 2018; 174: 85-96.
  20. Eyre N, Baruah P. Uncertainties in future energy demand in UK residential heating. Energy Policy 2015; 87: 641-53.
  21. Muñoz González CM, León Rodríguez AL, Suárez Medina R, Ruiz Jaramillo J. Effects of future climate change on the preservation of artworks, thermal comfort and energy consumption in historic buildings. Appl Energy 2020; 276: 115483.
  22. Pérez-Andreu V, Aparicio-Fernández C, Martínez-Ibernón A, Vivancos JL. Impact of climate change on heating and cooling energy demand in a residential building in a Mediterranean climate. Energy 2018; 165: 63-74.
  23. Zheng Y, Weng Q. Modeling the effect of climate change on building energy demand in Los Angeles county by using a GIS-based high spatial- and temporal-resolution approach. Energy 2019; 176: 641-55.
  24. Berger T, Amann C, Formayer H, Korjenic A, Pospischal B, Neururer C, et al. Impacts of climate change upon cooling and heating energy demand of office buildings in Vienna, Austria. Energy Build 2014; 80: 517-30.
  25. Cao J, Liu J, Man X. A united WRF/TRNSYS method for estimating the heating/cooling load for the thousand-meter scale megatall buildings. Appl Therm Eng 2017; 114: 196- 210.
  26. Andrić I, Gomes N, Pina A, Ferrão P, Fournier J, Lacarrière B, et al. Modeling the long-term effect of climate change on building heat demand: Case study on a district level. Energy Build 2016; 126: 77-93.
  27. Larsen MAD, Petrović S, Radoszynski AM, McKenna R, Balyk O. Climate change impacts on trends and extremes in future heating and cooling demands over Europe. Energy Build 2020; 226.
  28. Morakinyo TE, Ren C, Shi Y, Lau KKL, Tong HW, Choy CW, et al. Estimates of the impact of extreme heat events on cooling energy demand in Hong Kong. Renew Energy 2019; 142: 73-84.
  29. Srikhirin P, Aphornratana S, Chungpaibulpatana S. A review of absorption refrigeration technologies. Renew Sustain Energy Rev 2000; 5: 343-72.
  30. Kim DS, Infante Ferreira CA. Solar refrigeration options - a state-of-the-art review. Int J Refrig 2008; 31: 3-15.
  31. Talbi MM, Agnew B. Exergy analysis: An absorption refrigerator using lithium bromide and water as the working fluids. Appl Therm Eng 2000; 20: 619-30.
  32. Kaynakli O, Kilic M. Theoretical study on the effect of operating conditions on performance of absorption refrigeration system. Energy Convers Manag 2007; 48: 599- 607.
  33. Infante Ferreira C, Kim DS. Techno-economic review of solar cooling technologies based on location-specific data. Int J Refrig 2014; 39: 23-37.
  34. Desideri U, Proietti S, Sdringola P. Solar-powered cooling systems: Technical and economic analysis on industrial refrigeration and air-conditioning applications. Appl Energy 2009; 86: 1376-86.
  35. Ullah KR, Saidur R, Ping HW, Akikur RK, Shuvo NH. A review of solar thermal refrigeration and cooling methods. Renew Sustain Energy Rev 2013; 24: 499-513.
  36. American Society of Heating Refrigerating and Air Conditioning Engineers. ASHRAE handbook : fundamentals. 2017.
  37. Salata F, Coppi M. A first approach study on the desalination of sea water using heat transformers powered by solar ponds. Appl Energy 2014; 136: 611-8.
  38. Golasi I, Salata F, De Lieto Vollaro E, Coppi M. The degradation of ammonia in absorption thermal machines. Energy Procedia, vol. 126, 2017.
  39. Golasi I, Salata F, De Lieto Vollaro E, Coppi M. Parameters Affecting the Efficiency of a Heat Transformer with a Particular Focus on the Heat Solution. Energy Procedia 2016; 101: 1183-90.
  40. Salata F, Golasi I, Verrusio W, de Lieto Vollaro E, Cacciafesta M, de Lieto Vollaro A. On the necessities to analyse the thermohygrometric perception in aged people. A review about indoor thermal comfort, health and energetic aspects and a perspective for future studies. Sustain Cities Soc 2018; 41: 469-80.
  41. ISTAT. Sistema statistico nazionale Istituto nazionale di statistica 2018; vol. 1.
  42. Salata F, Golasi I, Treiani N, Plos R, de Lieto Vollaro A. On the outdoor thermal perception and comfort of a Mediterranean subject across other Koppen-Geiger's climate zones. Environ Res 2018; 167: 115-28.
  43. Salata F, Ciancio V, Dell'Olmo J, Golasi I, Palusci O, Coppi M. Effects of local conditions on the multi-variable and multiobjective energy optimization of residential buildings using genetic algorithms. Appl Energy 2020; 260: 114289.
  44. Peel MC, Finlayson BL, Mcmahon TA. Updated world map of the Köppen-Geiger climate classification. Hydrol Earth Syst Sci Discuss 2007; 4: 439-73.
  45. Pinna M. Contributo alla classificazione del clima d'Italia (Contribution to the classification of the climate of Italy). Riv Geogr Ital 1970; 77: 129-52.
  46. Weather Research and Forecasting Model | MMM: Mesoscale & Microscale Meteorology Laboratory n.d. https: // (accessed January 16, 2021).
  47. Falasca S, Curci G. High-resolution air quality modeling: Sensitivity tests to horizontal resolution and urban canopy with WRF-CHIMERE. Atmos Environ 2018; 187: 241-54.
  48. Ciancio V, Falasca S, Golasi I, Curci G, Coppi M. Influence of input weather data from different sources on simulations of annual energy needs of a building. EnergyPlus and WRF coupling for a case study in Rome (Italy). Energies 2018: 1- 17.
  49. Catalano F, Moeng CH. Large-Eddy Simulation of the Daytime Boundary Layer in an Idealized Valley Using the Weather Research and Forecasting Numerical Model. Boundary-Layer Meteorol 2010; 137: 49-75.
  50. Falasca S, Catalano F, Moroni M. Numerical Study of the Daytime Planetary Boundary Layer over an Idealized Urban Area: Influence of Surface Properties, Anthropogenic Heat Flux, and Geostrophic Wind Intensity. J Appl Meteorol Climatol 2016; 55: 1021-39.
  51. Skamarock WC, Klemp JB, Dudhia J, Gill DO, Barker DM, Wang W, et al. A description of the Advanced Research WRF version 3. NCAR Technical note -475+STR 2008.
  52. Falasca S, Ciancio V, Salata F, Golasi I, Rosso F. CG. High albedo materials to counteract heat waves in cities: An assessment of meteorology, buildings energy needs and pedestrian thermal comfort. Build Environ 2019.
  53. Falasca S, Curci G, Salata F. On the association between high outdoor thermo-hygrometric comfort index and severe ground-level ozone: A first investigation. Environ Res 2020.
  54. Stocker TF, Qin D, Plattner GK, Tignor M, Allen SK, Boschung J, Nauels A, Xia Y, Bex V and Midgley Stocker PM TF, Qin D, Plattner GK, Tignor M, Allen SK, Boschung J, Nauels A, Xia Y. VB and PMM. IPCC, 2013: Summary for Policymakers. In: Climate Change 2013: The Physical Science Basis. Contribution of Working Group I to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change. Cambridge, United Kingdom and New York, NY, USA: 2013.