The ongoing energy transition toward more sustainable systems implies a change in the values for which such are designed. however is not just about sustainability but also like security and affordability, we witness emergence of new justice democracy. How can understand value changes how or should they affect design future systems? This introduction to special section on introduces main themes ...

passive solar systems such as solar chimneys need solar radiation in order to work. therefore, they cannot present stable natural ventilation when solar energy vanishes: to have a more robust and stable condition, solar energy should be stored during the day and released back during the night. phase change materials can save additional thermal energy during the day and release it during the nig...