Energy saving, consultancy and training in Latvia. Energy savings in public buildings. Audit of: Riga Technical University. Final report

摘要

The university buildings examined are only about 10 years old, but there is a lot of improvement to be done if the buildings and the heating system should be on an acceptable level from an energy point of view. To improve the building envelope it was proposed that the floors over the basement should be insulated underneath with approximately 100 mm of hard mineral wool bats, the roofs should be insulated with at least 100 mm of hard mineral wool bats, and new felt must be put on, the outside of the spandrel panels should be insulated with weatherproof covering and insulated windows and new doors should replace the present ones. A temporary solution could be to establish extra removable windows (storm windows) and to improve the existing windows by weather-sealing and good quality painting. This will only be a temporary solution. In order to improve the technical services of the buildings it was suggested that the heating system should be rebuilt (two pipe system), existing radiator/convector should be fitted with valves to open and close for heat regulation, prior insulated pipes and all valves in the basement should be re-insulated, boiler rooms should be rebuilt so it will be possible to prepare the inlet temperature in accordance with the outdoor temperature and to make night and week-end set backs, ventilation ducts in the basement should be insulated and energy management should be implemented. (AB).