3. Sizing

3.1 Input data required for sizing

In order to design a device adapted to the needs of the site, with controlled purchase and operating costs, you need to know :

• the hourly quantity of heat to be removed Q (J/h) ;

• cooling water flow rate q _vr (m ³ /h) ;

• the temperature drop of this water ΔT = T _e2 – T _e1 (K) ;

  knowing that these three data are linked by the following relationship :

  $$Q=\mathrm{4,18}\times {10}^6{q}_{vr}\text{Δ}T$$