2. Cooling Water and Pressurised Air

Fig. 6: Standard media distribution with 18 °C cooling water, pressurised air and gaseous nitrogen

Cooling water

There are three different water circuits installed:

  1. 8 °C water for the climatisation devices, inlet pressure 3 bar
  2. 18°C water for the 19" racks, inlet pressure 4 bar, outlet pressure 2 bar
  3. 18 °C water for the hutches, inlet pressure 8 bar, outlet pressure 2 bar

For the users, only the circuit 3) is of interest. For this purpose, a distributor is installed in all hutches (see Fig. 6). The cooling water has a pressure of 8 bar. In order to use the cooling water, the following rules must be obeid: a) Every cooling water circuit is a closed loop. Thus even a small water leak might lead to problems for all users. b) Consequently, the connections to your setup should be installed by the DESY group MKK2 (9-3367 or 9-3362) c) Don't mix up inlet and outlet. They are indicated.

 

Pressurised air

This system provides very clean pressurised air with the following spec’s:

  1. Pressure 6 bar
  2. No particles or aerosols above 0.1 µm
  3. Amount of oil below 0,01 mg/m3
  4. Amount of water below 0,88 g/m3, dewpoint < -20 °c

Information about the pressurised air can be found on the EPICS server of MKK, where the pressure, temperature and dew point are stored. This information is accessible via any web-browser. To plot the history, you have to select one (or more) of the following parameters.

  • WK:K:47d:1:P_ExpH_ai air pressure for experimental hall
  • WK:K:47d:1:CTPD_ExpH_ai dew point of pressurised air
Link to EPICS server