Geothermal heat
	During the rebuilding of the premises, durability was taken into account. Thus use is made of a geothermal installation which reduces the amount of energy needed to heat the museum by more than 75%. The same installation is also used for the Climatization control system so that here too costs can be saved.

The Source of Energy
The earth is an immeasurable source of energy. The sun has been warming the atmosphere, and consequently the upper layer of the earth's crust, for millions of years. In reverse the centre of the earth passes its heat from inside ouwards to the earth's crust. The first meters under the earth's surface are still affected by the changing seasons. One meter down, the temperature varies from 4 to 17 degrees celsius. Five to seven meters underground the influence from outside is almost negligible, and the temperature rises slowly, namely with 1.5 á 3 degrees celsius per 100 meters. Our thermalpump installation enables us to make use of this constant source of energy in our area to create a pleasant warmth in the buildings, and provide warm water running out of the taps in the toilets.

Thermodynamics
Thermal pumps form part of a permanent energy system which transforms the geo-warmth in our area into utilizable energy. There is such a system in nearly every house in the form of a fridge or a deep freeze. The refrigerator extracts warmth given off by the products put into it, and passes that warmth into the airspace outside the fridge on this basis thermodynamics come into play when geo-thermal warmth enters the building ( via the central heating installation for instance). 

The system delivered for the Energy
Preferably the thermal pump installation reduces the Central Heating water to a lower temperature, i.e. of 35 - 40 degrees celsius. The profit margin of the (C.O.P) pump is at its highest at these temperatures. This temperature is actually much lower than the temperature most central heating units are geared to 60 - 80 degrees celsius. That is the temperature most systems delivered with traditional radiators, have been designed to work with. That system has insufficient power to heat up our low temperature water so that the building would be warm enough. Therefore the radiators have been replaces by special complicated low-temparature radiators. They are ideally suited to floorheating (or low temperature wall and/or ceiling heating).

Led Lighting (Light Emitting Diode)
Where possible use has been made of LED lighting in the museum. Because this system is not yet usable everywhere you will still come across normal lighting in some places. However the fittings used are already fully prepared for adaption to LED lighting.