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Concept and sustainability
The core task of museums is to preserve art, cultural and natural heritage, for present and future generations alike. This places strict requirements on the environmental conditions in museum storage facilities, where stability and quality are essential to ensure the long-term preservation of collections. Museums, like the rest of society, are in the midst of a green transition that requires reductions in energy use, CO₂ emissions, and overall resource consumption. Low-energy consumption storage buildings are one answer to this dual challenge. The concept utilizes the physical properties of the building and its outdoor environment to create stable conservation conditions, often without heating and with minimal technical control.
The report Low energy storage facilities – concept and sustainaility describes the requirements that must be met to establish low-energy storage buildings to ensure the long-term preservation of cultural heritage, while minimising environmental impact. It brings together more than two decades of Danish experience with low-energy storage facilities and is based on documented examples where both conservation quality and energy consumption have been measured and analysed.
The report is intended to be a practical tool for contractors, consultants, museum professionals and authorities working on the planning, design and operation of low-energy storage facilities for movable cultural heritage.
DEFINITION OF A LOW-ENERGY STORAGE FACILITY
In this report we define a low-energy storage facility as a facility that ensures high preservation quality (expressed as a Time-Weighted Preservation Index (TWPI) above 100) while maintaining a relative energy consumption for environment control of less than 3 kWh per cubic meter of storage space annually.
The report is made up of two parts, and we recommend that you first familiarise yourself with part 1 with a view to understanding the rationale behind the requirements in part 2.
Part 1 is a functional description reviewing the basic principles for the technical construction of low-energy storage facilities, including structure, air conditioning principles and the importance of the indoor environment for preservation quality. This section introduces key concepts such as Time-Weighted Preservation Index (TWPI) and environmental control zones (standard, dry, ultra-dry, and cold environment).
Part 2 presents specific functional requirements for a low-energy storage facility. It describes technical and building requirements that must be satisfied when establishing a low-energy storage facility.
A tested concept
Many examples of well functioning low-energy storage facilities already exist in Denmark, and with that a lot of experience and knowledge about the guiding principles of such facilites has been obtained.
Below is a map of the eight Danish low-energy storage facilities that have provided the data that this report builds upon. The facilities represent different kinds of buildings and principles for environmental control, but all have in common their efforts to ensure high preservation quality with a low consumption of energy.
The selected facilities do not make up a complete list of facilities in Denmark. They have been chosen as they have previously taken part in research projects, thus being able to provide detailed data.
