Railroad Passenger Car HVAC and Controls
Phone: (503) 231-4808, Fax: (503) 230-0572, E-mail
See where our equipment is located on a typical passenger car
At left is a modular HVAC control system assembled for use in controlling the heating, venting, and air conditioning on a business car owned by a major North American railroad company. More examples of such railroad HVAC control systems may be seen in the custom locker package section of our web site. At right is an evaporator built to provide air conditioning in the galley on a dining car, made from stainless steel in order to meet modern food service standards in such locations.
On the surface, HVAC controls on railroad passenger cars seem simple enough: keep the passengers comfortable by running the air conditioning when it is too hot and run the heat when it is too cold. However, simply throwing a mercury-bulb thermostat in a passenger coach will not do the job. Vibration of the passenger car, for one example, would make the mercury slosh around and make the system unreliable. If the car were stopped on a section of track with super-elevation or sunken sections, the temperature control would also be unreliable as the mercury bulb will not be positioned correctly. Air conditioning equipment for buildings use tends to use high fin density with very thin fins, so that when used to air condition railroad cars reliability and capacity are quickly reduced due to damage from rocks and other moving-vehicle related debris. Therefore, producing reliable HVAC systems and temperature control for railroad passenger cars is not quite a simple as it might first appear to be, and requires more than just grabbing off the shelf building systems and mounting them into the railroad car.
Northwest Rail Electric has an assortment of railroad HVAC systems, components and control systems operating in passenger cars in all areas of North America. We have experience in what makes railway air conditioning and heating systems operate well, yet be simple and rugged enough to withstand the railroad environment.
Passenger Car HVAC products from Northest Rail Electric:
At right is a custom under-car air conditioning condenser designed to be a replacement and upgrade for a traditional 32 volt D.C. under-car unit, or replace an existing 480 volt or 240 volt under-car condenser that has been damaged or otherwise requires replacement.
- Complete Railway Air Conditioning Systems including our NW-2 and NW-4 systems. The NW-4 provides blowers, heating, and air conditioning in a unit designed to mount on the roof of a railroad passenger car, while the NW-2 is a railroad air conditioning unit designed for mounting under the floor of the car.
- Compact Overhead Evaporator, Blower and Heat Unit designed to fit in the overhead space in most older passenger cars, and replaces older blowers, evaporators, and steam heat coils with electric heat in a single unit.
- Our Standard Under-car Condenser Unit is designed to be a companion condenser to the above evaporator unit. It is available in several different capacities with several compressor options for those rebuilding the air conditioning of various types of railroad passenger cars.
- We have produced a number of under-car condensers that are designed to function as either additional condenser coil capacity for situations where it is necessary, or as a separate stand-alone air conditioning condenser when a compressor is already in the system.
- Our complete Electric Locker Packages include HVAC controls, circuit breaker panels, and other systems.
- The NW25-100 Locker Package with Single-Zone HVAC Control System and Circuit Breakers is designed to be a compact electrical system upgrade for most passenger car rebuilding projects.
- We also have a NW25-200 Two-Zone Package for railroad cars with two zones of air conditioning (such as dome cars).
- You can see some examples of Custom Electric Locker Packages, many of which have HVAC controls incorporated into them.
- Take a look at some examples of Custom HVAC Products we have built over the years, including custom condensers and evaporators to provide air conditioning on railway cars that require custom shaped systems.
- We have built PLC based control systems, many of which have HVAC controls or HVAC data logging and/or fault detection and reporting incorporated into them.
- NW-603-INT Replacement HVAC Control for systems used on older Amtrak cars
- Solid-Element Heaters for retrofit of steam heat systems in a number of railroad passenger cars.
Some customers have had unique requirements that have resulted in the development of custom HVAC equipment, but in almost all cases our standard packages are able to meet the needs of most railroad passenger cars.
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