Auxiliary: HEATING SYSTEMS 101 by ProQuest

VIEWS: 47 PAGES: 5

Carrier Transicold's [Dean J. Lande] also advises looking at the manufacturer's recommended maintenance intervals. "Some units, such as Carrier's ComfortPro APU, provide service intervals of 1,000 hours of operation, which provides plenty of flexibility for synchronizing service with the truck's service schedule," he says. "In typical long-haul operations, 1,000 hours of APU use equates to about six months, so at that rate, service will be needed twice a year."

More Info
									              |                                                                    |

              Auxiliary
                                HEATING SYSTEMS 101
              By David A. Kolman


              Essential considerations
              for choosing reliable,
              easy-to-maintain units


             A
                    nti-idling laws, high fuel prices
                    and unnecessary engine wear
                    are    causing   fleet   operators
              to look for alternative ways to keep                                                                                                                                            Photo courtesy of
                                                                                                                                                                                             Carrier Transicold
              drivers in a comfortable environment
              when temperatures drop. The use of
              auxiliary heating systems is one method
              for heating the truck cab and sleeper                                                        on large trucks is under development and has been demonstrated.
                                                                                                              Another alternative heating solution is the Autotherm Energy Recovery
              without having to run a truck’s engine.
                                                                                                           System (ERS). It automatically continues operation of the vehicle’s heater
                                                                                                           every time the engine is turned off.
                 While an idling engine maintains a comfortable environment for drivers, it                   By circulating the same amount of hot water to the cab heater as the
              wastes energy. Even though diesel engines are efficient when idling, constant-                engine pump and keeping the fan operating, the Autotherm ERS keeps the
              ly running high horsepower engines at low rpm combusts fuel incompletely.                    cab interior warm for hours whether the operator is in the vehicle or out of it,
              What’s more, continually operating the engine at low speed causes additional                 says Frank Perhats of the Autotherm Division of Enthal Systems.
              wear on internal parts compared with road speed rpm, and that increases                         The cooling system of any vehicle that has been driven on the road for a half
              maintenance costs and shortens engine life.                                                  hour or longer has reached optimum operating temperature and is, therefore,
                 By using an auxiliary heating system to heat the cab, a truck’s engine can                a storehouse of useable energy, he explains. In most trucks, this energy is
              be shut off, so far less fuel is used and fewer diesel emissions emitted. Since              slowly dissipated to the vehicle exterior when the engine is off.
              the engine isn’t running as much, there is reduced the wear on the engine                       In a few minutes, the cab interior becomes too cold to occupy comfortably
              and other related mechanical components.                                                     because the engine driven pump is no longer running and circulating hot water to
                 On average, heavy duty diesel truck engines consume 1 to 1.5 gallons of                   the heater. Autotherm ERS captures this heat and puts it to use warming the cab.
              diesel fuel per hour while idling. When operating on the road, these engines
              consume around 6 or more gallons per hour.
                 The amount of operational savings that can be realized from auxiliary heaters will
              depend, naturally, on how well the system is matched to requirements and needs.                Auxiliary heating system
              That is no small feat, as there is a very wide variety of designs and models to pick from.     manufacturers
                 There are auxiliary cab and sleeper heater systems that come with engine                    Manufacturers of auxiliary heating systems include:
              heating capability, and full auxiliary power units (APUs) that come with added                 COMPANY .................................................................. PRODUCT NAME
              functions as well. APUs are offered by truck OEMs as original equipment and                    ACC Climate Control ................................................ ACC Climate Control
              from a variety of manufacturers for new and aftermarket installation.                          Aux Generators ...................................................................Idle Hawk
                 APUs come in various styles and arrangement. There are models that are                      Black Rock Systems .............................................................Black Rock
              powered by diesel or propane. The typical major components are a small engine,                 Bergstrom .................................................. Bergstrom NITE Plus System
              an alternator and the heating, ventilating and air conditioning (HVAC) system.                 Carrier Transicold ............................................................... ComfortPro
                                                                                                             Comfort Master .............................................................Comfort Master
                 There are hybrid and electric APUs for which batteries and an inverted
                                                                                                             Diamond Power Systems ......................................Diamond Power System
              charger are important components. One hybrid system, introduced earlier
                                                                                                             Double Eagle Industries ......................................................... Gen-Pac
              thi
								
To top