Combined heat and power (CHP) is the simultaneous production of electricity with the recovery and utilisation of heat. Cogeneration is a highly efficient form of energy conversion and it can achieve primary energy savings of approximately 40% by compared to the separate purchase of electricity from the national electricity grid and a gas boiler for onsite heating.
Combined heat and power plants are typically embedded close to the end user and therefore help reduce transportation and distribution losses, improving the overall performance of the electricity transmission and distribution network.
Hartwell Manufacturing have designed and tested a flue system specific to this application and heat requirement of CHP engines. The nature of burning Gas has a number of complications and in some cases can cause the exhaust gas to backfire due to excess gas left in the flue system. This creates an explosive pressure within the flue system reaching 7 bar and temperatures in excess of 650 deg.
Hartwell have now installed 1000’s of meters of fully tested flues ranging from 200 diameter to 900 diameter. This is a fully welded system predominantly manufactured in 316 stainless steel however on natural gas it is possible to use 304 stainless steel. The fabricated machined flanges manufactured at our works are manufactured in 321 Stainless Steel with A2 stainless steel bolting arrangement. This system is now specified by a number of leading consultants for installations in hospitals throughout the country and many of the now industrial domestic heating energy centres.