Active internal liquid cooling

An internal liquid cooling system as an active fire protection was implemented in full-scale GFRP panels for beam and column applications, the resulting thermal responses have been introduced and modeled in Chapter 6 and the mechanical responses in Chapter 7. The fire endurance time of each scenario is summarized in Table 9.1 and more details can be found in the previous chapters. It can be concluded that combined mechanical loading and fire experiments on full-scale water-cooled cellular slabs and columns proved the feasibility of an effective fire protection. Fire endurance durations of up to 2 h could be reached at slow water... 

Table 9.1 Fire endurance time of full-scale GFRP beams and columns subjected to ISO 834 fire curve with active fire protection (Internal liquid cooling).

Besides active cooling with air or with liquids like oil, stacks can also be cooled with water. The effects of water cooling are estimated by the authors only theoretically. The reason is the pressurization of the water cooling circuit, which is necessary not only for the conventional water cooling but also for the phase change concept. At ambient pressure of 1 bar the internal water cooling would cause a stack temperature of round about 100 °C due to the evaporation at... 

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