Paper presented at the 8th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Mauritius, 11-13 July, 2011.
Depending on the operating conditions, combined heat, cooling
and power systems (CHCP) can sometimes compete energetically
and economically with classical vapour compression
chillers. Conclusions are often different if either the economic
or energetic feasibility is investigated. The application of free
chilling can highly affect the results.
In this paper, simulations in TRNSYS are performed of a cooling
installation of a datacenter of 1500 kW. The use of absorption
chillers with gas engines is compared with the application of superchillers
(air cooled vapour compression chillers that can run
in free chilling). Both single effect and double effect, direct and
hot water fired absorption chillers have been studied. The impact
of the variation of some crucial parameters on the economic and
energetic feasibility of trigeneration is studied.
Concerning energetic feasibility, the efficiency of the gas engines
and the temperature regimes are some crucial parameters.
Varying energy prices highly affect the economic feasibility of
trigeneration.
