what is the difference between summer and winter air conditioning system?
535458
good question...the term air conditioning refers to conditioning of air..irrespective of outside temp..i.e. when u want to cool ur room in hot climate and heat ur room in cold climate...\nrefer the site: www.marineengineering.org.uk     and go to main page and select utilities and the refrigeration and air conditioning systems both diagram and formulaes...
603680
THEORETICALLY, you'll get better gas mileage on cold days because you're ramming more air into the engine.  And the TIRES (the biggest waste of energy is heating up the tires instead of pushing the car forward) are going to run cooler, too.  \n\nThe heater steals less energy from the engine than an airconditioner, too, another plus for cold days.\n\nIf you have that sensor that adds gas on cold days, it depends on how much gas it adds during cold weather.
928470
A heat pump is like a conventional air conditioner except it also can provide heat in winter. In the summer, the heat pump collects heat from the house and expels it outside. In the winter, the heat pump extracts heat from outside air and circulates it inside the house. The heat pump works best when the outdoor temperature is above freezing. Below that, supplementary heat often is needed. A heat pump can save 30 to 60 percent less energy to supply the same heat when compared to an electric furnace with a resistance heating element.\n\nCOOLING CYCLE -- Refrigerant passes through the indoor coil, evaporating from a liquid to a vapor. As the liquid evaporates, it absorbs heat, cooling the air around the coil. An indoor fan pushes this cooled air through ducts inside the house. Meanwhile, the vaporized refrigerant laden with heat, passes through a compressor which compresses the vapor, raising its temperature and pressure. The reversing valve directs the flow of hot, high pressure vapor to the outdoor coil where the heat released during condensation is fanned into the outdoor air, and the cycle begins again.\n\nHEATING CYCLE -- Note that the slide inside the reversing valve has shifted, causing the refrigerant flow to reverse. Liquid refrigerant now flows to the outdoor coil picking up heat as it evaporates into a low pressure vapor. The vapor travels through the compressor where it is compressed into a hot, high pressure vapor, then is directed by the reversing valve to the indoor coil. The vapor turns into liquid as it passes through the indoor coil, releasing heat that is pushed through the ducts by the indoor fan.
221941
your breath is warm compared to cold temperatures
790311
To get the most out of your room air conditioner, you'll need to consider the size of the unit that best suits your needs.\nThe cooling capacity of room air conditioners is measured in British thermal units per hour, or Btu/h. To figure out the maximum cooling capacity for a room, you will first need to calculate the size of the room where the air conditioner will be placed.\nTo do this, simply multiply the width of the room by the length of the room.  Use the following information and formulars to help you with calculating your air conditioning requirements:\n\n\nHeat Load\n\nThe amount of heat generated is known as the heat gain or heat load. Heat is measured in either British Thermal Units (BTU) or Kilowatts (KW). 1KW is equivalent to 3412BTUs.  The heat load depends on a number of factors, by taking into account those that apply in your circumstances and adding them together a reasonably accurate measure of the total heat can be calculated. Factors include: \n\nThe floor area of the room\n The size and position of windows, and whether they have blinds or shades \nThe number of room occupants (if any) \nThe heat generated by equipment \nThe heat generated by lighting \nArea of Room\n\nThe amount of cooling required depends on the area of the room. To calculate the area in square metres:\n\n\nRoom Area BTU = Length (m) x Width (m) x 337\n\n\nWindow Size and Position\n\nIf, your room has no windows, you can ignore this part of the calculation. If, however there are windows you need to take the size and orientation into account.\n\n\nSouth Window BTU = South Facing window Length (m) x Width (m) x 870\nNorth Window BTU = North Facing windows Length (m) x Width (m) x 165\nIf there are no blinds on the windows multiply the result(s) by 1.5.\nAdd together all the BTUs for the windows.\n\nWindows BTU = South Window(s) BTU + North Window(s) BTU\n\n\nOccupants\n\nYou will have to take that into account people who normally working in the space. The heat output is around 400 BTU per person.  \n\nTotal Occupant BTU = Number of occupants x 400\n\n\nEquipment\n\nClearly most heat in a room is generated by the equipment. This is trickier to calculate that you might think. The wattage on equipment is the maximum power consumption rating, the actual power consumed may be less. However it is probably safer to overestimate the wattage than underestimate it.\n\n\nEquipment BTU = Total wattage for all equipment x 3.5\n\n\nLighting\n\nTake the total wattage of the lighting and multiply by 4.25.\n\n\nLighting BTU = Total wattage for all lighting x 4.25\n\n\nTotal Cooling Required\n\nAdd all the BTUs together.\n\nTotal Heat Load = Room Area BTU + Windows BTU + Total Occupant BTU + Equipment BTU + Lighting BTU\n\nThis is the amount of cooling required so you need one or more air conditioning units to handle that amount of heat.\n\n--------------------\n\nGeneral thumb rule \n\n100 sqr ft area with roof height of 9 - 10 ft will need 1 Ton AC unit.
591876
Warm air holds more water vapor than cold air.  That is why a clothes dryer uses heated air to draw the moisture from the clothes.  It is also why when warm moist air meets cold air it results in precipitation.
10347
In the US, air conditioning units were often rated in tons of cooling.  An air conditioner that is rated at one ton has sufficient cooling capacity to produce one ton of ice (2,000 lbs) in twenty-four hours.  The rating is equivalent to the amount of Btu's that must be removed to convert a ton of water to ice.  Small air conditioners are usually rated more directly in Btu per hour, etc.  All units can be rated in tons based on engineering calculations (even though they do not actually make ice) to permit comparison with a building's heat load.  The manufacturer would not know how much air you wish to cool by how many degrees temperature change.  Since pure water weighs 62.4 lbs per cubic foot, 2,000 Lbs equals about 32.05 cubic feet which equals about 0.907 cubic meters.  Of course, air conditioners may be rated differently in countries that use the metric system.
1033924
Any type of air conditioning unit must have a way to expel the hot air it generates outside of your home.  \n\nWith a window air conditioning unit, the unit sits partially inside and partially outside.  The hot air is expelled directly to the outside.\n\nWith a Split Air Conditioning one unit sits completely inside, and another sits outside.  The hot air is channeled through a pipe to the outside unit.  This means that the unit can be placed anywhere, not just in a window.  Also, since the compressor is outside of the home, the unit is quieter than a traditional window air conditioner.
159073
ARID>DRY AIR IS BETTER FOR MOST CONDITIONS
89822
It helps, but air temperature and density is what makes the biggest difference. Cold, thick air makes the most power.
774374
It's because there is typically less humidity in the air in the winter.  Humidity refers to moisture in the air and dampness on the surfaces of objects, and this moisture helps to dissipate or equalize the static charge.
102653
Summer: Hot and a bit breezy \n\nWinter: Freezing and windy \n\nFall: Brisk and slight wind \n\nSpring: Cool (moisture in air) and breezy
26224
I love the cold. In the cold it's simpler to just put on the heat when your cold. but its harder to chill the heat
426622
temperature differences
841873
Do you want cooling effect or warm?\nPl. read:\n\nStandard ceiling fan controls usually include one for speed (high, medium, low, and off), one for the light (on and off), and one for directional control of the fan blades (clockwise and counterclockwise). These vary depending on the make, model, and age of the fan; computerized and remote-controlled ceiling fans are becoming very popular as the technology becomes regularly available.\n\nCeiling fans are normally used as a cooling device in warm months by pushing air down from above, thereby creating a wind chill effect. In winter months, a ceiling fan can act as a heat transferrer by reversing the direction of the blades. By doing so, the fan pulls air up, thereby pushing the warmer air that stratifies near the ceiling down along the walls; as long as the fan is set at a low speed, this will not create a wind chill. A fan on reverse has the leading edge of the fan blades being the downward edge; in most cases this rotation is clockwise when the operator is standing below and looking upwards at the fan.\n\nActually it is not that simple. If you have a standard ceiling height (~8 feet) then you want to run the fan in the clockwise direction during the winter. Specifically, the ceiling fan blades should be running with the lower edge of the blade being the leading edge into the air. Having the leading edge of the fan blade down will pull the air in the room upward which pushes the warm air hovering near ceiling outward and forces it to mix with the rest of the air without creating much turbulence or breeze. Although it is a common sense explanation to run the fan in the opposite (counter clockwise) direction pushing the warm air down as a direct force, this also creates a breeze in the room (giving an undesired ‘cooling’ effect) and is therefore not effective for standard ceiling heights.\n\nFor high ceilings (greater than 8 feet) you want to run the fan in the counterclockwise direction during the winter. Specifically, the ceiling fan blades should be running with the upper edge of the blade being the leading edge into the air. Having the leading edge of the fan blade up will push the air near the ceiling downward into the room. The breeze created by operating the fan in this direction will be undetectable at low speeds since the fan height is tall enough that the breeze has dissipated before reaching the room height where people would notice.
966618
Wow some of these answers are scary.  The air conditioner works by taking heat from inside the room and blowing it outside.  If the air conditioner is completely in the room, then all the heat that it blows outside stays in the room, therefore the temperature stays the same.\nBut...\nAll machines create heat just by running.  Think computers, light bulbs, etc.  Therefore, the temperature will get a little higher.
739078
Because it takes a lot more energy to change the temperature of water than it does to change the air temp, since water is considerably denser.  The large body of water thus acts as a "heat-sink" holding on to heat during the day and releasing it into the air at night to keep the temperatures more moderate.\n\nBy the way, "moderate" doesn't just mean warmer in the winter, it can also mean cooler in the summer -- just less extreme all year 'round.  The same way the water holds on to heat during the winter, it stays cooler in the summer and moderates summer temps by being a constant cool source and through evaporation.