Cooling

With the objective of being able to run the telescope also during a power-cut, we have been designing a new emergency ventilation system that would keep the telescope electronics sufficiently cool also when the cooling system is not running. The system would just circulate the cooling water and by-pass the cooling units, simply dumping the heat through a fan-coil unit next to the cooling unit (well removed from the telescope). We also expect that on many (winter) nights we will be able to cool the telescope building and electronics only using the ventilation system, significantly lowering our power usage and ultimately cost. Offers have been requested for the parts that are needed to modify the system.