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The latter two are used extensively in the design of. If you place two objects together so that. This is called. conduction. This is an easy concept to grasp and is rather like. If you were to fan a hot plate of food it would cool.
Some of the heat from the food would be carried away by. When heat is transferred by a substance in the. And if you kicked a glowing hot ember away from. Note that an object doesn’t have to be. So you. can see that in order to refrigerate something, we must find a way. We are getting closer to talking. They are of course; solid, liquid and gas.
It is. important to note that heat must be added to a substance to make it. It is. just as important to note that heat must be removed from a substance.
Long ago it was found that we needed a way to quantify heat. Something more precise than "less heat" or "more heat" or "a great. This was a fairly easy task to. They took 1 Lb. of water and heated it 1 degree. Fahrenheit. amount of heat that was required to do. BTU. (British Thermal Unit). The refrigeration industry has long.
You can for example purchase a 6. BTUH window air conditioner.
This would be a unit that is capable of. BTU's of heat per hour.
A larger unit capable of. BTUH could also be called a one Ton unit. There are 1. 2,0. BTU's in 1 Ton. To raise the temperature of 1 LB of water from 4.
BTU. To raise the temperature of 1 LB of water. BTU. However, if. Water boils at 2. Something of utmost importance occurs at the boiling point.
If you did a little experiment and added 1 BTU of. LB of water, you would notice that the water. That is until you. Then something changes. You would keep adding. BTU's, but the water would not get any hotter!
It would change state. BTU's to vapourize that pound of.
This is called the Latent Heat of Vapourization. BTU's per pound. © 2. Seaside Computing. You Will Learn the. Basics with Easy to Understand HVAC Training Lessons. Then You Will Learn Advanced HVAC.
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ABAbsolute Zero. ACaccess valvesaccessoriesaccumulator. Accurator. Add On Heat Pumpadiabatic.
AEVAFUEAHUair (components of)Air Conditioningair (conditions of)air filtrationalkylbenzene oil. All Electric Heat Pump. Alternating Currentamperage, also. Annual Fuel Utilization Efficiencyanti- short- cycling deviceanticipation. ASHRAEatom. Automatic Expansion Valve. Azeotrope. Back Seated. Balance Pointbarometerbi- metal disk.
Bourdon. Boyle's Law. British Thermal Unit. BTUbull headed teeburn outscapacitor. Capacitor Start Capacitor Run Motor. Capacitor Start Induction Run Motorcapillary line. Celsiuscentrifugal compressorceramic capacitorcharging. Charle's Lawcheck valve.
Close Coupled. Class 1 conversion. Class 2 conversioncoalescing oil separatorscompressorscompressor driver.
Compressor Efficiency Testcondensate linecondensate pan. Condenser Damperscondensing medium. Condensing Unitconduction (electrical)conduction (thermal)conductor (thermal)controls. Constant Cut In Controlconvectioncooling anticipationcooling loadcooling tower. COP, also. Coulomb.
CPRVcrackedcrankcase heater. CSIRCSCRcurrent relaycut incut out. Daulton's Law. DCDefrost Termination Thermostatdesign temperature.
Dew Point. Defrost Termination Statdielectric. Direct Current. Discharge Service Valvedischarge temperaturedistributordrop in replacement. DSVEEREEVelectric defrost. Electro- Magnetismelectrolytic capacitor. Electromotive Force. Electronic Expansion Valve. EMFenergy. Energy Efficiency Ratioenthalpyenthalpy controlsentropy.
EPRVevacuation, also. Evaporative Condenser. Fahrenheitfan cycling. Fan Delay Thermostatfan rotationfan speed controllerfilters (air)filters (refrigerant)Fixed orificeflash gasflammability. Fresh Air. Free Coolingfront seatedgases. Gas Lawsgaugegauge manifold set.
Hand Operated Expansion Valvehand valve. Head Pressure Controlheatheat anticipation. Heat of Compression. Heat Pumps. Heating Seasonal Performance Factorhelical oil separators. HEPAhermetic compressor. Hertz. High Side Float. High Side Restrictionholding circuit.
Hop Scotch Method (troubleshooting)Hot Gas Bypass Regulatorhot gas defrost. Hot Wire Relay. HSPFHVAC Training Basics.
HVAC Training. Advanced. HVAC Training - Troubleshooting. Electrical. HVAC Training - Troubleshooting Mechanicalhygroscopichydrostatic pressurehuman comfort zonehumidityimpedanceimpingement oil separatorsincremental unitinsulation (electrical)insulation (thermal)Kelvin. King Valve. Latent Heatladder schematiclead- lag. Line Tap Valveliquid/vapour interface.
Liquid Line Filter/Drier. Liquid Line Solenoid Valveliquid slugging. LLSVlock out circuit. Locked Rotor Amperage. Low Side Floatlow voltage controls. LRAmagnetism. MATMechanical Cooling.
Meg. Ohm. Mercurymercury bulb thermostat. Metering Device. MFDmicronmicron gauge. Mid Seatedmigrationmineral oil.
Minimum Fresh Air. Mixed Air. MOmolecule. Mollier Chartsmotor theorymotor typesmufflermultiple stages. Non- Recycling Pump Down. OATODSODS conversions. OEMoff cycle defrost. Ohm. Ohm's Lawoil failure controlsoil separatoroil sluggingopen compressor.
ORDORIOROAOzone Depleting Substance. Packaged Systems. PAGParallel Drop. Permanent Split Capacitor Motorphosgenepiping. POEpolyalkylglycol oilpolyolester oilpotential relaypressurepressure control. Pressure- Enthalpy Diagrams. Pressure Temperature Relationship.
PSCPSIGPsychometrics. P- Trap. PTCPT Charts. PTCRpump down. Radiation. Rankinereceiverreciprocating compressorreclaimrecoverrecyclerefractometerrefrigerant leaksrefrigerant oilsrefrigerants.
Refrigerant Side Head Pressure Control. Refrigeration (definition of) Refrigeration looprelayresistanceretrofitting ODSreusereverse cycle defrostrotary compressorrotorrun capacitorrunning burn outsafetysafety controlssaturated conditions. Schraeder Valvescrew compressorscroll compressor.
Seasonal Energy Efficiency Ratio. Secondary Refrigerant.
Heat & Cool Efficiently | ENERGY STARAs much as half of the energy used in your home goes to heating and cooling. So making smart decisions about your home's heating, ventilating, and air conditioning (HVAC) system can have a big effect on your utility bills — and your comfort. Take these steps to increase the efficiency of your heating and cooling system. For more information, see our Guide to Energy Efficient Heating & Cooling (7. KB). Change your air filter regularly. Check your filter every month, especially during heavy use months (winter and summer).
If the filter looks dirty after a month, change it. At a minimum, change the filter every 3 months.
A dirty filter will slow down air flow and make the system work harder to keep you warm or cool — wasting energy. A clean filter will also prevent dust and dirt from building up in the system — leading to expensive maintenance and/or early system failure. Tune up your HVAC equipment yearly. Just as a tune- up for your car can improve your gas mileage, a yearly tune- up of your heating and cooling system can improve efficiency and comfort.
Learn more: Install a programmable thermostat. A programmable thermostat is ideal for people who are away from home during set periods of time throughout the week. Through proper use of pre- programmed settings, a programmable thermostat can save you about $1. Seal your heating and cooling ducts. Ducts that move air to- and- from a forced air furnace, central air conditioner, or heat pump are often big energy wasters. Sealing and insulating ducts can improve the efficiency of your heating and cooling system by as much as 2. Focus first on sealing ducts that run through the attic, crawlspace, unheated basement, or garage.
Use duct sealant (mastic) or metal- backed (foil) tape to seal the seams and connections of ducts. After sealing the ducts in those spaces, wrap them in insulation to keep them from getting hot in the summer or cold in the winter.
Next, look to seal any other ducts that you can access in the heated or cooled part of the house. See our See our Duct Sealing brochure (1. MB) for more information. Consider installing ENERGY STAR qualified heating and cooling equipment. If your HVAC equipment is more than 1. HVAC contractor. If it is not performing efficiently or needs upgrading, consider replacing it with a unit that has earned the ENERGY STAR. Depending on where you live, replacing your old heating and cooling equipment with ENERGY STAR qualified equipment can cut your annual energy bill by more than $1.
But before you invest in a new HVAC system, make sure that you have addressed the big air leaks in your house and the duct system. Sometimes, these are the real sources of problems rather than your HVAC equipment. Ask about Proper Installation of your new equipment.
Replacing your old heating and cooling equipment with new, energy- efficient models is a great start. But to make sure that you get the best performance, the new equipment must be properly installed. In fact, improper installation can reduce system efficiency by up to 3.