MJ2462 Achieving Energy Efficiency in Existing Buildings 6.0 credits

Energieffektivisering i befintliga byggnader

  • Education cycle

    Second cycle
  • Main field of study

    Mechanical Engineering
  • Grading scale

    A, B, C, D, E, FX, F

Course offerings

Autumn 19 for programme students

Autumn 18 for programme students

Intended learning outcomes

This course will discuss how energy is used in buildings today and how energy technology can be used to increase energy performance of existing buildings. The course will focus on how the energy use may be reduced by collecting and interpret information of the energy systems in buildings.  

After the course the student should be able to

  • Make a plan to audit energy systems in buildings according to the degree of detail needed
  • Perform the planned energy audit
  • Measure heat dissipation of ventilation and radiator heating systems
  • Measure electric power of pumps, fans and other typical equipment
  • Estimate the UA-Value of typical building elements
  • Account for reference values of energy performance in different building types
  • Estimate the energy use of typical air conditioning applications
  • Calculate a buildings energy signature and normalize energy use
  • Interpret measurements on heating systems and identify defects 
  • Interpret measurements on electric systems and identify defects 
  • Distribute the measured energy use between the different sub systems
  • Describe how the different energy systems in a building interacts
  • Describe how the control systems interact with the energy systems in buildings
  • Identify typical errors in complex energy systems
  • Identify measures that results in a reduced energy demand
  • Evaluate measures and combination of measures from an technical perspective
  • Evaluate measures and combination of measures from an economical perspective

Course main content

The course will give a fundamental understanding on how energy technology can be applied to reduce energy demand of buildings. Thermodynamics, heat transfer, thermal indoor climate, measurement technology, building simulation software and problem solving will be applied in surveys to find the possibilities to increase the energy performance of buildings.

The course is divided in two parts; one theoretical part that consist of a series of lectures and one practical part where the student will work with surveys of real energy systems in buildings. The course focuses on typical buildings in the Swedish building stock, but the knowledge attained in this course can be adapted to any building and energy system in the world.  


The student should have basic knowledge in energy engineering and in energy systems in buildings.

Prerequisite courses: MJ1112 Applied Thermodynamics 9 ECTS, MJ1401 Heat Transfer 6 ECTS, MJ2407 Sustainable Energy Utilization 9.0 ECTS,  SG1220 Fluid Mechanics for Engineers 6.0 ECTS, MJ2422 Thermal Comfort and Indoor Climate 6.0 ECTS, or equivalent courses on the subjects.


To be announced


  • PRO1 - Project, 1.0, grading scale: P, F
  • PRO2 - Project, 2.0, grading scale: P, F
  • TEN1 - Examination, 3.0, grading scale: A, B, C, D, E, FX, F
  • TEN1 - Examination, 3.0 credits, grade scale: A, B, C, D, E, FX, F
  • PRO1 - Project assignment in energy surveys of buildings I, 1 credit, grade scale: P, F
  • PRO2 – Project assignment in energy surveys of buildings II, 2 credits, grade scale: P, F

Requirements for final grade

Examination (TEN1; 3 hp), Project assignments (PRO1; 1 hp) and (PRO2; 2 hp).

Offered by

ITM/Energy Technology


Jörgen Wallin, jorgen.wallin@energy.kth.se, 08 790 86 53


Joachim Claesson <joachim.claesson@energy.kth.se>


Course syllabus valid from: Autumn 2011.
Examination information valid from: Autumn 2011.