The ‘AHP’ series of indirect heat exchangers are designed for commercial air heating applications. The robust construction of the units makes them an ideal heat source for shopping centres and commercial premises. AHP heaters are usually fitted with a high temperature limit thermostat or thermocouple unit, in order to protect the heat exchanger from excessive overheat. Heater capacities of thermal outputs from 60kW to 1200kw are available.
The ‘HEF’ series of indirect fired heaters are designed to fire industrial process applications where process air is recirculated at relatively high plant operating temperatures. Operating air temperatures up to 400°C can be accepted. Heater capacities of thermal outputs from 60kW to 1200kW are available; special units to meet the requirements of a particular application can be supplied. The robust construction of the units makes them an ideal heat source for many industrial process plants.
The ‘HEM’ series of indirect fired heaters are designed to fire applications where process air is to be heated from ambient temperatures up to the process plant requirements. The robust construction of the units makes them an ideal heat source for many industrial oven and heating systems; typical applications include spray booths and drying rooms. Operating air temperatures up to 300C can be accepted. The standard HEM heaters consist of a heat exchanger mounted inside a flanged and insulated steel duct section. The heat exchanger section is generously rated for heat transfer surface area and consists of a stainless steel combustion chamber and tube assembly. The combustion chamber and the tube bank assembly are independently mounted to cater for differential expansion. The outer casing of the HEM unit is manufactured from standard carbon steel and is of a double skinned, thermally insulated construction; insulation is available either 50mm or 100mm thickness depending on application requirements. The complete inner assembly can be withdrawn on its front plate for repair or servicing.
The HET heater is an indirect fired unit designed for most applications where there is a requirement to heat ambient process air to temperatures of up to 300°C in one lift. The unit consists of a stainless steel concentric tube type heat exchanger mounted in a mild steel chamber.
The outer casing of the unit is generally manufactured from carbon steel; it is double skinned and insulated with mineral wool. The unit can be constructed totally in stainless steel.
