ABSTRACT
Are Used ...................................................................................... 191 7.4 Acoustic Climate ......................................................................................... 193
7.4.1 Noise Sources and Measurement ..................................................... 194 7.4.2 Noise and Communication ............................................................... 195 7.4.3 Noise and Masking .......................................................................... 195 7.4.4 Noise Reduction ............................................................................... 197 7.4.5 Vibration .......................................................................................... 198
References and Further Reading ............................................................................ 199
Environmental factors can be categorised as either physical or chemical in nature. Chemical factors usually include dust, gases, vapours, smoke, and various different chemicals. This type of problem hopefully has little relevance to most control room situations. However, there are a large number of problems that belong to the physical category, such as thermal climate (warmth, cold, humidity, and draught), lighting, and acoustic climates, which are of particular relevance in the control room situation. Problems associated with the thermal climate are underestimated in most types of control rooms. It is important when dimensioning air-conditioning systems to take account of the heat given off by the different pieces of equipment in the control room, as these can cause a considerable addition to room heat. This chapter briey
describes various requirements for thermal comfort, lighting, and acoustic climate with relevant examples.
