Water Cooled Evaporative Air Conditioning or geothermal
Evaporative cooled condensing units for split system air conditioners have a number of advantages over air-cooled units. This is why most commercial air conditioners larger than about 250 tons typically rely on cooling towers to cool water and remove heat generated from the compression cycle of the chiller. The key elements of the unit include multiple low-pressure water nozzles that spray a mist of water over the condenser coils to remove heat after the refrigerant is compressed. Water temperature can be maintained at about 10° F over wet bulb via heat absorbed through evaporation, which is then removed via a fan on top of the unit.
Unlike air cooled units, which lose in the range of 25 percent of their rated efficiency at temperatures exceeding 100° F relative to their SEER rating, the efficiency of an evaporative water cooled unit has a minimal drop.
In the past, evaporative cooled condenser units were used only in commercial applications. Now one manufacturer has a model that is designed specifically for the residential market.
Freus Inc. has developed a water cooled evaporative condenser unit. A "scroll" compressor compresses the R-22 refrigerant. A small water pump continually sprays water over the condenser coil, which cools the coil primarily via conduction from the copper coil to the water, sprayed on the coil. The coil is solid copper; approximately three times the thickness (i.e. 0.032" vs. 0.012") of that used in air-cooled condensers, and the copper is coated to prevent corrosion. Magnesium anodes are included to treat the water and reduce coil corrosion.
A float maintains approximately 3.5 inches of water in the bottom of the condenser. Every 8 hours of run time, a timer causes a purge pump to pump all water from the bottom of the unit (approximately 5-8 gallons). The float valve then causes more water to flow until a level of about 3.5 inches is restored.
Water removes heat from the condenser coils far more efficiently than air. The heat transfer and evaporative process is increased via a fan on top of the condenser.
Above 95° F, a typical air cooled condenser draws approximately an additional 10% power for each 10° F increase in temperature. In contrast, an evaporative cooled condenser draws about the same power over a wide range of outdoor temperatures.
Residential and small commercial models are available from 2 to 12 tons. The dimensions of the evaporator unit are comparable to a 3-5 ton conventional condenser unit.
UTILIZING WATER FROM THE SWIMMING POOL TO COOL THE COMPRESSOR.
Utilizing a closed loop system with water coils 6 foot bellow the surface to keep the water cold and circulating these water over the compressor to reduce the coil temperature.
Basically utilizing the geothermal energy to maintain the cool temperature of the water.
Inverter compressor for HVAC systems
ReplyDeleteAn Inverter compressor is designed to vary its speed as the demands in the room change. Inverter compressors are designed to soft start therefore causing no dips in power supply.
Single phase AC power is supplied to the outdoor unit where it is rectified and converted into DC power to drive the compressor the input frequency is then modified to allow the compressor to run at a variety of speeds.
As the compressor speed decreases, the amount of refrigerant entering the indoor unit also decreases. This results in a more comfortable environment as the unit only produces the appropriate amount of cooling or heating required at that time - no more temperature swings.
Inverter compressors have been shown to reduce power consumption by as much as 60% when compared to conventional fixed speed equivalents.
The SPW DC inverters use Advanced Digital Hybrid (ADH) technology for better, smarter and more cost-efficient year-round climate control. Immediately following start up, the DC compressor operates at maximum power to provide almost instant heating or cooling. As the desired air temperature is reached, a special Pulse Width Module automatically adjusts the compressor's frequency to exactly meet the cooling or heating requirements of the room. The result is exceptionally precise temperature control, less noise and significant energy savings
Our war for energy independence and economic sustainability
ReplyDeleteThe US government and other governments are not serious about energy efficiency and renewable energy development and implementation – they are too busy playing politics and capitulating to the Oil Companies.
IT is time to get series to avert an economic catastrophe – I hope it is not too late
The world needs to invest $50 trillion in energy in coming decades, building some 1,400 nuclear power plants and vastly expanding wind power, solar power, geothermal energy in order to halve greenhouse gas emissions by 2050, according to an energy study released Friday.
The report by the Paris-based International Energy Agency envisions an "energy revolution" that would greatly reduce the world's dependence on fossil fuels while maintaining steady economic growth.
"Meeting this target of 50 percent cut in emissions and replacing fossil fuel represents a formidable challenge, and we would require immediate policy action and technological transition on an unprecedented scale," IEA Executive Director Nobuo Tanaka said.
The scenario for deeper cuts would require massive investment in energy technology development and deployment, a wide-ranging campaign to dramatically increase energy efficiency, and a wholesale shift to renewable sources of energy.
Assuming an average 3.4 percent global economic growth over the 2010-2050 period, governments and the private sector would have to make additional investments of $50 trillion in energy, or 1.2 percent of the world's gross domestic product, the report said.
That would be an investment more than three times the current size of the entire U.S. economy.
In addition, the world would have to construct 38 new nuclear power plants each year, and wind-power turbines would have to be increased by 18,000 units annually, solar energy output would have to be increased 20 fold every year.
Let us not forget as we are increasing the use of renewable energy and energy efficiency – the world population is increasing – the demand for energy by advancement in technology worldwide is also increasing. We have to take these factors into account.
Oil is going to hit at least $200 per barrel, gasoline at the pump will hit $6 or more per gallon, in some countries it is already $10 per gallon.
Most of the money would be in the commercialization of energy technologies developed by governments and the private sector.
"If industry is convinced there will be policy for serious, actions for accelerated development of renewable energy and efficiency, then these investments will be made by the private sector."
People are hurting financially and economically, this must end, we should strive for a thriving economy with new technology for renewable energy and efficiency.
We have the technology and knowhow let us stop playing politics – unite our people and our nation in a common goal to avert an economic disaster and maintain our quality of life for generations to come.
Let us serve as an example to the rest of the world.
Jay Draiman, Energy Analyst – June 10, 2008
t's also the time of the year when dishonest technicians come up with all kinds of stories and scams in order to make money out of you. So that you would know about what to be on the lookout for, here are some of the more common scams that ac repair waccabuc technicians try to pull off these days:
ReplyDeleteFor example - your oven might produce inefficient heat in addition to gas leakage when ignited; the dryer might produce noise when operated. In addition to these there might be problems with the refrigerators, washers, and dishwashers. GE, KitchenAid, Dacor, Viking, Wolf, KitchenAid, Ovens Repair in Orange County
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