ABSTRACT
Pfizer Chemical Corporation commissioned a Combined Heat and Power installation at their plant in Ringaskiddy, Co. Cork, Ireland, in August’ 87. The CHP facility used an existing watertube boiler modified to take the waste heat gases from a 5.4 Mw. gas turbine generator set. A feasibility study carried out in 1985 predicted an efficiency of 91.5 % base on an estimated electricity demand of 37,000 Mwh and a steam load of 302,000 tonnes per annum. Final performance test results indicated an overall efficiency of 87.84 % at 100 % maximun continous rating (MCR) on the boiler and 100 % load on the gas turbine generator set. The boiler was modified to accommodate the gas turbine exhaust gas volume. Savings were somewhat lower than originally estimated due to a fall in both gas and electricity prices but they remain very attractive.
