Guest satisfaction is crucial
The main requirements made by hotel guests is for their hotel room to be fresh, quiet and comfortable. All of us will at some time have had to put up with a hotel room with centrally controlled ventilation that could not be adjusted, and which rumbled or wheezed, and where the temperature was either too high or too low. This is why most guests appreciate being able to adjust both the ventilation and temperature of their room. The requirement for a system solution is then to create an individually demand-controlled indoor climate while maintaining high-level energy efficiency and cost-efficient operation.
Long ventilation ducts do the job
Hotel rooms are usually located one after another, which for ventilation purposes typically involves extensive branched ducting. The effect of this may be large differences in pressure drop between the first and last supply air diffuser serving main ducts, with the resulting noise problem and non-adjustability factor. The lesser the pressure that needs to be throttled in the supply air diffuser, the quieter the system.