a/c repair Orlando
A/c Evaporative cooling might sound complex
but it’s pretty familiar to all of us. Dogs keep cool without air conditioners just by sticking their tongues out and panting; hot runners use a similar trick, sweating profusely to shed heat from their bodies. When liquid water evaporates and turns to water vapor, it absorbs heat, known as the latent heat of evaporation, which it has to remove from something nearby (a panting dog or a sweating athlete, perhaps). Putting this science to practical use, we can use evaporation to remove the heat from a room providing we have a handy supply of water nearby.
On most modern Air-conditioning systems there is a dehumidification cycle; the compressor is on and the fan is slowed as much as possible (lowest speed under normal conditions). This reduces the evaporator temperature and therefore condenses more water than if it were to have a high fan speed. To help mitigate temperature drops when the temperature falls below a threshold, both the fan and compressor turn off, this stops moisture on the evaporator being blown back into the room. When the temperature rises again the compressor comes and the fan goes back to low speed. However occasionally the fan will stay on and compressor go off to thaw any ice produced (hence why the program doesn’t work in cool conditions).
Conversely, air conditioning (including filtration, humidification, cooling and disinfection) can be used to provide a clean, safe, hypoallergenic atmosphere in hospital operating rooms and other environments where proper atmosphere is critical to patient safety and well-being. Excessive air conditioning can have a negative effect on skin, causing it to dry out, and can also cause dehydration.
Before selecting the installation location of air conditioner, several main factors need to be considered. First of all, the direction of air flow from the indoor units should not fall on the place of rest or work area. Secondly, there should not be any obstacles on the way of the airflow that might prevent it from covering the space of the premises as much as possible. The outdoor unit must also be located in an open space, otherwise the heat from the house will not be effectively discharged outside and the productivity of the entire system will drop sharply. It is highly advisable to install the air conditioner units in easily accessible places, for further maintenance during operation.
Modern air conditioning systems are not designed to draw air into the room from the outside, they only recirculate the increasingly cool air on the inside. Because this inside air always has some amount of moisture suspended in it, the cooling portion of the process always causes ambient warm water vapor to condense on the cooling coils and to drip from them down onto a catch tray at the bottom of the unit from which it must then be routed outside, usually through a drain hole. As this moisture has no dissolved minerals in it, it will not cause mineral buildup on the coils. This will happen even if the ambient humidity level is low. If ice begins to form on the evaporative fins, it will reduce circulation efficiency and cause the development of more ice, etc. A clean and strong circulatory fan can help prevent this, as will raising the target cool temperature of the unit’s thermostat to a point that the compressor is allowed to turn off occasionally. A failing thermistor may also cause this problem. Refrigerators without a defrost cycle may have this same issue. Dust can also cause the fins to begin blocking air flow with the same undesirable result: ice.