Letter to the editor: Revision of the universal sky temperature model

Ficker T . Numerical study of heat losses of building walls containing reflective foils. Indoor Built Environ 2022; 31(7): 1932–1948.

Clarke JA . Energy Simulation in Building Design. 2nd ed. Oxford, UK: Butherworth/Heinemann, 1985, p. 255.

EN ISO 6946:2017 (en). Building Components and Building Elements — Thermal Resistance and Thermal Transmittance — Calculation Methods. (Czech Translation: ČSN ISO 6946:2020 Has the Same Status as the Official Version). Brussels, Belgium: CEN, 2017.

Environmental Systems Performance - Research (ESP-r) is a Modelling Tool for Building Performance Simulation. It is available on the Web-Portal of the University of Strathclyde, 2022. https://www.strath.ac.uk/research/energysystemsresearchunit/applications/esp-r/

Swinbank WC . Long-wave radiation from clear skies. Q J R Meteorol Soc 1963; 89: 339–348.

Cole RJ . The longwave radiation incident upon the external surface of buildings. Build Serv Eng 1976; 44(9): 195–206.

Čekon M . Accuracy analysis of longwave sky radiation models in the MZLEWE module of ESP-r program. Energy and Build 2015; 103: 147–158.

Čekon M Kalousek M Hraška J . Verification of MZELWE module in ESP- r programme with experimental confrontation. In: Research and Applications in Structural Engineering, Mechanics and Computation. CRC Press, Taylor & Francis Group, 2013, pp. 649–650.

Čekon M Kalousek M Hraška J . Verification of MZELWE module in ESP- r programme with experimental confrontation. In: Research and Applications in Structural Engineering, Mechanics and Computation. CRC Press, Taylor & Francis Group, 2013, pp. 1813–1818.