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For example, if you’re living in a place where summers can go up to 45°C, you may need a higher tonnage unit even for a small room. On the other hand, in cooler climes, buying a higher tonnage AC for small rooms, means you’ll be living in an igloo. It’s All Written in t...
The job of the locomotive is to change the chemical energy from the fuel (wood, coal, diesel fuel) into the kinetic energy of motion. The first locomotives did this with a steam engine, which you can read more about in How Steam Technology Works. The steam locomotive lasted for about a...
What is BTU is an AC unit? Simply put, it’s the capacity or power of the AC. The bigger the BTU, the more cooling effect an AC unit can provide. Here is an example of how you can calculate how many BTUs you need to cool down a 500 sq. ft. area with 8 feet ceilings, avera...
thermal units, btu is the specific amount of heat it takes to increase the temperature of 1 pound of water by 1 degree fahrenheit. a btu rating indicates the amount of energy an air conditioner uses in an hour. the higher the btu rating, the more powerful the ac unit is. db vs. dba...
The head-end power unit (HEP) consists of another big diesel engine, which itself can make 3,000-4,000 horsepower. It tends to spin even slower than the main engine, maxing out at about 1,000 rpm. The engine drives a generator that provides 480-volt, 3-phase AC power for the rest...
Example: Carrier A/C Compressor Condenser Model# 38XD12400 (same unit as used for the serial number example above), there is variation in how Carrier assigned these numbers but typically the numbers indicate either tonnage or MBTUH. This example has digits in the 4th and 5th positions (right...
The head-end power unit (HEP) consists of another big diesel engine, which itself can make 3,000-4,000 horsepower. It tends to spin even slower than the main engine, maxing out at about 1,000 rpm. The engine drives a generator that provides 480-volt, 3-phase AC power for the rest...
There is also a secondary diesel engine and generator to provide electrical power for the rest of the train. This generator is called the head-end power unit, producing between 500 and 700 kilowatts (kW) of electrical power. This combination of diesel engine and electric generators and motors...
Notice that with each of these charts, if you know the square footage of your room or rooms to be covered, you can find that number on the right side of the chart and find either the BTU or tonnage rating on the left side. What Mini Split Sizing is and Why It’s Important How eff...