Where has all the ice gone. In September 2007, NASA released this photo of the ice pack which shows a freighting amount of ice melt that has happen occurred. In the spring of 2007 the UN recognized global warming as a serious threat but at that time, the data used assumed that this level of ice melt would not occur for nearly 50 years. Instead it happened in only 6 months. It only goes to show that with all our technology we can only predict the weather a few weeks in advance, everything else after that is a guess. We cannot predict the effect of global warming by even 6 month and we do not even have a clue as to what the long effects of global warming will be. We can only watch as it happens. continue...
AC Energy Saving Tips
Clean condenser coils Dirt, Grime and Pollution build up on the outdoor condenser. Regular cleaning reduces the power consumption and improves performance. Correct air flow Do not block supply or return air grills. Air current should not blow over the thermostat or short cycle back into the return air. Short cycling Condenser Air Most condenser discharge air vertically and draw air into the bottom or sides. Overhangs, roofs, fences or shrubs can block air discharge and be drawn back into the condenser. This increases the compressor amperage and temperature. Fan, Belt,& Pulley Belt driven systems require occasionally adjustment or fan belt replacement. Loose fan belts will slip on the motor pulley. Wearing the V groove of the pulley wall and slow the fan and reduce the air flow. Condenser Fan Control Condensers are design to work at 95F or higher. In cooler temperature below 70F, the mechanical refrigeration will lose efficiency. By turning off condenser fan or reducing the speed of the fan keeps the condenser pressure steady. AC Economizers When the outdoor air is below the room temperature it can be used for cooling. Why pay for the compressor operation when you don't have to. Setback Schedule Automatically turn the thermostat set point up a few degrees during unoccupied periods will reduce power consumption 10% to 20% Equipment Size Bigger is not better. Over sized equipment will short cycle and use more power. Select equipment according to the heat gain for the building. Multi-stage or variable speed equipment are more efficient and closely match the current load.
What causes the evaporator on an air conditioning system to freeze. There are many ways to freeze an evaporator coil. Listed below are the most common causes. The problem can also be a combination of them.continue...
