TY - JOUR TI - Optimisation on the thermal insulation layer thickness in buildings with environmental analysis: an updated comprehensive study for Turkey’s all provinces AB - This study determines the optimum insulation layer thickness to be applied to external building walls considering the heating degree-day (HDD) method, then energy saving costs, payback periods, and carbon dioxide (CO2) emissions are calculated accordingly. The optimisationanalysis is performed for four different thermal insulation materials (glass wool, rock wool,extruded polystyrene, and expanded polystyrene). Natural gas is chosen as fuel for heatingpurposes, and horizontal perforated brick is preferred in the wall. One of the original featuresin this study is environmental analysis to determine the CO2 emission for the insulated wall inTurkey provinces. Another feature is that it has the most up-to-date data about HDD valuesand fuel and insulation material costs. The worst and best insulation materials are obtainedas rock wool and glass wool, respectively. The optimum insulation layer thickness for the bestcase is varied between 0.07 m and 0.23 m, depending on the HDD values of provinces. Theannual total energy saving cost is in the range of 4.4–53.5 $/(m2year), and the payback periodis 0.11–0.38 years. Besides, the reduction in annual CO2 emission is changed between 53.2%and 94% for the best case, compared to the uninsulated wall. AU - BILGIN, Feyza AU - TUNÇKOL, Sezer AU - aktemur, cenker DO - 10.18186/thermal.978057 PY - 2021 JO - Journal of Thermal Engineering VL - 7 IS - 5 SN - 2148-7847 SP - 1239 EP - 1256 DB - TRDizin UR - http://search/yayin/detay/452823 ER -