Decarbonization of Heat – An Introduction to Sustainable Heating and Cooling Systems

Week 1: Introduction

During the first week we will set the scene for the MOOC. We discuss why heat is important in the energy transition with clear numbers on use and emissions. Furthermore, we discuss why it is challenging to decarbonize the heat system.

Topics we’ll cover this week:

• heating and cooling demand profiles
• exergy, insulation and temperature levels
• current heating/cooling systems and why it is challenging to change them

Week 2: Sustainable sources of heat

In this week you will be introduced to the various sustainable sources of heat and cooling that exist. You will learn how to quantify their available heating/cooling power, as well as total capacity per year/season.

Topics we’ll cover this week:

• solar collectors
• environmental: surface water, asphalt/road, outside air
• deep and shallow geothermal
• waste heat from industry, datacenters etc.

Week 3: Conversion and storage

A key challenge to meet heating and cooling demand from sustainable sources is the mismatch in quality of the heat and the time when it is available. To overcome these discrepancies various methods exist to store and/or convert heat. Topics we’ll cover in this week:

• fundamental working principles of a heat pump and application/types
• sensible heat storage in underground tanks and pits
• latent and thermo-chemical heat storage.

Week 4: Heat supply systems

In week 2 and 3 we covered the technologies needed to be able to meet heating and cooling demand from sustainable sources. In this week we will discuss how these different technologies can be combined to create heat supply systems. Topics we’ll cover this week:

• temperature levels and supply capacity in buildings and district heating networks
• passive and active heating/cooling
• design of district heating networks
• hydraulic connections and heat exchangers

Week 5: Heat economics and adoption

A key challenge in decarbonizing heating and cooling systems is related to economics (consumers don’t like to pay much for it) and adoption (consumers don’t like to change the systems in their house). During this week we examine these challenges in detail. You will learn how to create a viable business case for your sustainable heating system and how societal and policy aspects may affect its’ feasibility. Topics we’ll cover this week:

• heat economics: Levelized cost over heat (LCOH)
• business case for heat systems
• effective policies for the heat transition
• societal aspects in the heat transition

Week 6: Examples and your first own design

During the last week you will work on your own sustainable heating and cooling system by applying and combining the concepts acquired during the previous weeks. We provide you with inspiration by presenting a wide range of example projects from industry professionals to showcase how various challenges are dealt with in real life projects. We complete the MOOC with a wrap-up. Topics we’ll cover this week:

• individual heating systems
• collective heating systems
• integration of heating system in the future power grid