Keep windows and doors firmly closed, look into better insulation for your home as well to keep in coolness, this way the air conditioner can be on less due to not having to replenish coolness as much.
leaving your air conditioner on during the day
There are many ways to conserve energy. Some of these include changing light bulbs, using energy efficient appliances, sealing air leaks, installing a programmable thermostat, and conserving water.
For every degree that you raise the air conditioner's thermostat, you can have a savings of two percent on the electric bill. A general method to figure out energy saved per degree is to know that every degree above 70 will increases the energy cost by 7 percent to 10 percent.
compressor
The answer to your question is found in a science called Thermodynamics. If you have a chance to find a textbook, it is a fascinating science which studies the transfer of energy from one form to another. Hot air has a higher energy content then cool air. The air conditioner passes air over coils using convection to suck energy out of the air and into the much cooler coils. Because air coming out of the air conditioner has less energy, it has a lower temperature than the air that goes into the air conditioner. The coils are made cool by a chemical called refrigerant, which has special properties. The coils are made cold by the refrigerant when the refrigerant expands from a highly compressed state to a low compression state. The difference between these two states is one of low energy to high energy; the energy must come from somewhere, so the refrigerant sucks the energy from the coils, which in turn suck the energy from the air, so it forms a chain as such: decompressed refrigerant (takes energy from coils). The decompressed refrigerant must be compressed again, so energy is used to compress the refrigerant again so that the process can begin again. This is why every air conditioner has a compressor. The compressor uses energy from the electrical outlet to compress the air. In this way, we use energy from the electrical outlet to take energy from the air over and over and over again until the air is a temperature that you like. Air conditioners do not however make allair cooler, They make air in one area cooler at the expense of adding heat to another area. This heat originates as the power put into the compressor. This is exactly the same way that a refrigerator makes its interior cold while making the room it is in warmer.
leaving your air conditioner on during the day
lodfks
You can conserve energy by using fans instead of air conditioners, as fans require much less energy to operate than air conditioners.
There are many ways to conserve energy. Some of these include changing light bulbs, using energy efficient appliances, sealing air leaks, installing a programmable thermostat, and conserving water.
There are no air conditioner's here currently available that run only on solar energy.
When buying a portable air conditioner, you should worry about how much energy in which they consume. Seen as they are DC, they will not consumer as much as say an AC air conditioner which is powered from the mains.
About the same as for a window air conditioner.
I suggest that you put your air conditioner on low or use the fan on the air conditioner because it uses less energy. Another thing you could do is take a regular fan and put in the window to get air flow.
City or highway...
The energy used is electricity.
There are many ways that you can conserve energy in your daily life. Walk instead of drive. Eat vegetables instead of meat. Turn of the lights when you aren't in a room. Turn off water when it is not in use. Do not use an air conditioner. Do not grow a grass lawn. Turn off all electronics when not in use. Wear layers instead of using a heater. Eat raw foods that can be kept unrefrigerated, Wash clothes in as large of loads as possible.
maybe, if you use it for a short time. but i prefer to air dry, my hair does get frizzy, but i just us my flatting iron.