For years ice was the only refrigeration means available and is still used in many refrigeration applications. The usual ice refrigerator is an insulated cabinet equipped with a tray or tank at the top used for holding blocks of ice. Shelves for food are located below the ice compartment. Cold air flows downward from the ice compartment and cools the food on the shelves below. Temperatures range from 40 degrees to 50 degrees fahrenheit. The warm air rises from the bottom compartment of cabinet up the sides of the back of the cabinet, flows over the ice, cools again and flows back down the opposing side of the cabinet cooling off the contents of the shelves. The advantage the ice refrigerator has over more modern systems, is that food does not dry out easily. The ice refrigerator maintains a high level of humidity. Until the development of the modern refrigerator, natural ice refrigeration was widely used.
When fluid evaporates, heat is absorbed. This is why humans perspire. Evaporation of moisture from the skin helps keep the body cool. Another application of this principle is the "desert bag". Used to keep drinking water cool, the desert bag is made of a tightly woven fabric and it is filled with drinking water. Since the bag is not water proof, some water seeps through maintaining a moist outside surface. Under desert conditions, which are both dry and hot, moisture on the surface of the bag evaporates rapidly. A large part of the heat necessary to cause evaporation comes from the bag and the water contained in it. The heat removal cools the drinking water inside, keeping it several degrees lower than the temperature of the surrounding air!
Another application of water evaporation refrigeration is the method of making artificial snow for ski slopes. The device consists of a water nozzle into which a high-pressure jet of air is inserted. Water flows from the nozzle and the air, under high pressure, causes the water to break up into tiny droplets. When the air temperature surrounding the water droplets is near or below freezing, the droplets will evaporate and rapidly cool forming tiny ice drops. If the humidity is low, using this method, artificial snow can be made if the temperature is as high as 34 degrees fahrenheit This is possible because because of the rapid evaporation and evaporative cooling caused by the low humidity.
Modern applications of the topics discussed are utilized in the modern refrigerator. In operation, liquid refrigerant, under high pressure (dark red), flows from the liquid receiver to the pressure reducing valve and into the evaporator. Here pressure is greatly reduced (dark blue). Liquid refrigerant boils and absorbs heat from the evaporator. At this point a vapor, refrigerant (light blue) flows back to the compressor and is compressed to high pressure (light red). Its temperature is greatly increased and, in the condenser, heat is transferred to the surrounding air and the refrigerant cools, becoming liquid again. It flows back to the liquid receiver and the cooling cycle begins again.
It is the function of a cooling system to remove unwanted heat from a structure and relocate it to the out of doors. This heat exchange is accomplished by the use of the refrigeration cycle as performed by your air-conditioning system. The refrigeration cycle takes advantage of the relationships between pressure, temperature and volume, in such a way that heat is collected inside and released outside. It uses a condenser, a compressor, and an evaporator to accomplish this task. The condenser and compressor are located outside of the house, while the evaporator is located inside the air distribution system. The quantity of heat that needs to be removed to maintain indoor comfort, on a specific warm day for your region, is known as the heat gain for your structure. A building gains heat from the actual outdoor temperature and humidity levels. It gains heat from the people inside of it, from the lights, computers, copiers, dishwashers and ovens. But mostly it gains heat from its exposure to sunlight, from solar radiation. The hot sun beating down on the walls and the roof, the sunlight pouring through the windows and warming the floors. The sum of all of this heat accumulation is known as the heat gain of the building.
Copeland Compliant Scroll Compressors bring you the smoothest, quietest, most efficient compressor technology ever invented, and it's standard issue on the entire RHEEM residential air conditioning and heat pump line. Copeland Compliant Scroll Compressors represent a significant advancement in compressor design, offering higher levels of efficiency and durability. So much so, they have a 5-year warranty! Old-fashioned reciprocating compressors use pistons and valves to compress and move gas, but with a scroll compressor, these noisy, high-wear moving parts are eliminated. SIMPLE OPERATION. Two spiral-shaped members fit together, forming crescent-shaped gas pockets. One member remains stationary, while the other is allowed to orbit around it. Gas is drawn into the outer pocket created by the 2 members, sealing off the open passage. As the spiral motion continues, higher gas pressures are created, forcing the gas through the discharge point at the center of the scroll. SMOOTH AND QUIET. Several pockets of gas are compressed simultaneously for a quiet, smooth, nearly continuous compression cycle. RELIABLE. Copeland's Compliant Scroll Compressors use axial compliance to create a continuous seal so the unit actually "wears in" over time to improve its operating characteristics and actually reduce compressor sound.
During the winter, cold air try's to sneak into your house through every possible opening. This is known as infiltration. The warmer temperature in your house try's to escape through every opening as well. This is known as exhalation. The combination is known as heat transfer. It's as if the house was breathing. Breathing both air and temperature in and out. The total rate of all this leaking is known as the heat loss. This total will be calculated in btu's per hour, and the heating system will need to produce and distribute this same amount of btu's per hour to maintain your 68° F room temperature. Since most rooms differ from one another, each room's heat loss must be determined. The total loss of all rooms added together will determine the size and design of the heating system. In simple structures, the mere replacement of this lost heat is sufficient; but in complex houses with open floor plans and multiple levels, the flow of heat within the building becomes a factor. Heat rising from the first floor to the second, increases the demand on the first floor while decreasing the demand on the second. The formula used here is a combination of three ingredients developed to reflect the internal conditions of a modern structure. It combines industry accepted standards of heat transfer blended together with Signature's 16 years experience designing and installing heating and cooling systems. The result is an estimate of comfort.
When it comes to furnaces, size is important. A furnace that's too small won't keep the house comfortable during extreme cold. Partly to avoid that possibility, contractors sometimes sell furnaces that are too large for the home they're installed in. Cost is only one of the problems with such a unit. Compared with a correctly sized furnace, a furnace that's too large will cycle on and off more frequently. That puts more wear on its components, wastes energy, and may cause the temperature to vary uncomfortably. Also, upgrading to a larger furnace may require the installation of bigger ducts to accommodate the increased airflow.
The heat exchanger (the heart of your furnace) is hollow tube metal which allows ignited natural gas to pass through the inside of the tubes. The spent gas is then discharged into a 4 inch round duct called the flue and the gas is emitted out the roof of your home. You can see the spent gas on really cold winter days, (what looks like steam coming out of vents on roof tops). The heat is transferred to your house by the blower motor which draws air back to the furnace via the return air vents in your home. The return air is then forced through the heat exchanger. The air warms by removing the heat off the heat exchanger surface (the outside of the tubes) discharging the heated air into your home.
Your furnace turns on & off hundreds of times a year. The heat exchanger is made out of metal which expands when heated and contracts when cooled. Over the years this will produce hairline cracks in the heat exchanger. (This is a common result in most furnaces)
When your furnace turns on for heat, the burners ignite the main gas which heats up the heat exchanger to a set temperature. The small induction fan located just above or below the burner removes the spent gas via the flue. The main blower motor that draws back the return air from your house comes on after the heat exchanger gets hot The gas burners will continue to come on and off to maintain the temperature of the heat exchanger through out the heat cycle. If you have a even a hairline crack in the heat exchanger when it heats up it will expand and allow carbon monoxide to escape into the main duct that is used to deliver air to heat your home. As soon as the blower motor turns on the gas will discharge into your living space. Although the amount of gas in the air is minuet (150 parts per million per hour is considered a hazard per the AGA (American Gas Association)), this happens every time your furnace turns on and every time the burners turn on to maintain the temperature of the heat exchanger. On cold days your furnace can cycle on between twenty, thirty or more times. This can become a hazard.
Signature Heating and Air Conditioning
Establisted in 1999 Family owned & operated
No Bull, No Gimmicks, No Nonsense , No Bait & Switch , No upsell, No nothing
Why are we still in business after 17 yrs because we tell it like it is.
Serving Denver and Aurora Metro Areas
NEW! Now Offering 6 months SAC on new installs of Lennox Equipment.
***Note*** Warranty parts replacement and labor is performed Monday thru Friday 8 AM to 5 PM only. After hours and weekends will be charged a $95 Trip Fee.
***Note*** Warranty only covers defective Parts REPLACEMENT in Furnace or Air Conditions not Maintenance. Maintenance Example: dirty air filter in furnace, dirty flame sensor in furnace, dirty AC condenser or Evaporater coil, dirty laundry LOL. Batteries in thermostat, plugged condensate line on AC evaporater coil.
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We service the below City & zipcodes: Or recommend an HVAC Companys if we dont serve your area.
Zip codes within 5-20 minutes of our office 80104 80109 80019, 80018, 80016, 80015, 80014, 80013, 80012, 80011, 80010, 80134, 80138, 80110, 80111, 80112, 80113, 80122, 80124, 80126, 80128, 80127, 80129, 80130, 80104, 80108, 80109, 80231, 80237, 80239, 80249, 80222, 80224 . We also service Adams County, Arapahoe County, Denver County, Douglas County, Elbert County, Jefferson County
7201 S Rome St
Centennial, Colorado 80016
Tel: (303) 680-8800
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