5.4.
Boiler systems Delivery of two hot water boilers. Type : Low pressure, hot water Capacities : 8.0Gcal/hr (9.3MW) Manufactured according to CE standard. Hot water boiler 3-pass combined flue and fire tube boilers with smooth furnace and watercooled reversal chambers. Boiler designed with an optimal exploitation of the radiant heat in the furnace tube, whereas the convection heat is fully extracted in two subsequent fire tube sections, all of which results in high efficiency and low fuel consumption. Boiler placed on two “closed” boiler saddles and can be mounted on a low plinth or directly on the floor. Rubber table-mats to be installed between boiler saddles and the heat affected surfaces of the boiler. Boiler insulated (wool) as follows: 100mm on the outer shell 100mm on front and rear end Boiler finished in high quality plastic-coated steel sheet and spray painted in DS-colours. At the rear end provided with an entrance door and inspection hole/cover with turn-able inspection glass, through which the combustion can be checked.
5.4.1.
Shunt pumps Delivery of shunt pumps. Shunt pump provides the internal circulation in order to achieve an uniform temperature inside the boiler. Boiler fitted with a return water distributor, which ensures an efficient mixing of the return water with the hot boiler water, and which, in connection with the furnace tube, ensures a vivid internal circulation in the boilers. Pump projected between service valves.
5.4.2.
Boiler safety fittings Delivery of following safety fittings on each boiler. spring loaded safety valves overflow valves pressure gauges pressure meters low water safety device for water control
5.4.3.
Supply and return of the boilers Delivery of the necessary supply and return piping to the manifold with a design capacity of 18.6MW; Supply and return of each separate boiler equipped with an manual valve. Main boiler headers equipped with automatic de-aerators.
5.4.4.
Boiler return water pump Boiler return water pumps projected in the return pipe of each boiler. The frequency pump provides the circulation of water within the boiler system to the heat storage tank or Customer:_____
23 March 2012 Page 32 of 74 Dalsem Horticultural Projects BV Offer for 6HA
Dalsem:_____