Energy Demand in Buildings


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Discover how building design and occupancy determine the energy demand in buildings and learn how to (re)design low-energy buildings.

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Building design strongly influences the quantity of heating, cooling, and electricity needed during building operation. Therefore, a correct thermal design is essential to achieve low energy and low carbon buildings, with good indoor air quality.

This course will enable you to understand the basic principles of the energy chain: demand, supply, and distribution; and how they relate to design principles for sustainable and energy-efficient buildings.

Second, you will discover what type of heat losses and gains take place in buildingsā€™ operations. You will learn how to estimate these flows using simple meteorological data and construction properties. You will acquire knowledge on how to estimate heat transfer through construction, ventilation, solar radiation, or caused by internal sources or heat storage in the construction.

Third, you will learn to make estimates of buildingsā€™ energy needs on an hourly basis by using simple static energy balances: how much energy comes in and out and which air temperature is needed? When is there heating or cooling? How much electricity is needed?

Fourth, you will discover how to extend your estimates to yearly energy demand, which is essential to make sure that a building is energy efficient and to estimate energy savings and energy costs. You will then also be able to determine the size of the needed heating and cooling equipment (which determines the costs of equipment).

Finally, you will learn how to optimize building design and will be able to find out the optimal window size or the optimum insulation thickness for your building. You will know why putting windows on the south faƧade is not always energy-efficient. You will understand the thermal interactions between building components and be able to make informed decisions on how to increase the energy efficiency of new and existing buildings.

This course is part of the PCP Buildings as Sustainable Energy Systems. In the other courses in this program, you can learn how to choose a low carbon energy supply, how to create a comfortable indoor environment, and how to control and optimize HVAC systems.

The development of this course is supported by Climate-KIC.

  1. All about the energy chain approach, which is a powerful tool to achieve low energy and low carbon buildings.
  2. To estimate the most important heat losses and gains in a building.
  3. How to achieve the thermal balance of the building and determine its space heating and cooling needs.
  4. How to estimate the heating energy demand for hot tap water and the electricity needs for appliances and lighting.
  5. How to achieve a low energy demand by optimizing window size, insulation, orientation, and ventilation while taking into account building occupancy.
Energy Demand in Buildings

Originally posted 2022-02-20 23:35:13.

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