Heating System Without Separate Fans
Page 63
If you've noticed an error in this article please click here to report it so we can fix it.
ANEW passenger-vehicle body-heating system. dispensing with individual fan units has been developed by Clayton Dewandre Co., Ltd., to meet B.E.T. requirements, and has been installed in the Leyland Tiger Cub with Park Royal body operated by the Western Welsh Omnibus Co., Ltd. (The Conunercial Motor, June 24).
Use is made of the vehicle radiator, and air is passed through this to warm the passenger compartment, the flow being con trolled by three valves regulated by
thermostats. When the engine is cold, a flap in the ducting to the radiator is closed to induce rapid warming-up of the engine. When the coolant temperature reaches 160° F., flaps in the body open so that air is drawn from the saloon through the radiator and back into the saloon.
When the desired saloon temperature (say 55° F.) has been reached, the air. intake flap is. adjusted so that fresh air is drawn through the -radiator. When the body temperature reaches a second predetermined value (say 65° F.), the flaps are actuated again so that air is drawn from the saloon.
This encourages cool, fresh air to be drawn into the saloon via roof apertures, so keeping the interior temperature within reasonable limits.