| how does car heater work | autoheaters | ||||||
Today, the HVAC system components are spread throughout the engine compartment, exposing them to high heat and vibration. The automotive alternator and HVAC components are often among the top five product reliability issues cited for both construction equipment and on-highway trucks.The newly developed MorElectric HVAC module system combines all the HVAC components into a new module how that uses an electrically powered, hermetically sealed compressor. "Packaging all the components together," Orr said, "also allows the use of rigid refrigerant tubing, and eliminates refrigerant permeation through the hoses. We expect to achieve a 5x improvement in reliability and a 3x improvement in durability over current air conditioning systems as used in trucks and construction equipment today." The HVAC module removes the condenser from the radiator area of the engine compartment, providing more physical space, as well as eliminating the air conditioning thermal load from the radiator air stream. does Cat estimates its new modular HVAC also eliminates as many as 65 parts. Field service thus becomes a simple replacement function. The module can be swapped out in less than an hour, allowing customers to quickly get back up and running, and returned to revenue service. I don''t know anything else nonexplosive, that you can pick up with one hand, and that can move five tons one hundred feet--with safety, precision, and astonishingly little work. Like many good tools the Tirfor is a thing of beauty, superbly designed and engineered. With 100 feet of cable (or more) its reach is much greater than a come-along, and this can often make all the difference. Its speed is much faster, too, not just the speed in moving something (the lever is double-acting) but speed in setting up or moving the set-up around. Often when you need to move something, minutes if not seconds count. The action is precise. A come-along winds the cable upon itself, and often when the cable comes under tension the cable wrap slips a bit. The resulting jerks can cause all kinds of problems in a situation where precise movement counts, and a sudden shift in load may cause failure somewhere else. Finally, the Tirfor has a much more effective (and safer) mechanism for smoothly lowering a heavy load. Most (ratcheted) come-alongs are very poor at this. ©2003 www.autoheaters.net All rights reserved. |
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