Efficient AC: How Does It Reduce Compressor Work Load?

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In summary, the patent described in the link proposes a method to reduce the workload of a car air conditioner's compressor by using heat from the exhaust to super-heat the gas after it exits the compressor. While some may question the effectiveness of this method, the patent office has approved it and it is included in the first claim of the patent. The idea behind this is that heating the gas after it leaves the compressor does not increase its pressure, contrary to what some may think. Overall, this patent aims to improve the efficiency of car air conditioners.
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The patent in the link explains that it reduces the work load on the compressor in a car air conditioner by using heat from the exhaust to super-heat the gas directly after it exits the compressor. Other than that it seems to be a normal air conditioner. I am having trouble understanding how this reduces the load on the compressor. Wouldn't the increased pressure of the hot gas work against the pistons in the compressor? How does it work?

http://www.freepatentsonline.com/7412843.pdf
 
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  • #2
Prime example of what little checking the patent office does.

This does increase work on the compressor. You cannot increase the pressure of the gas after the compressor without increasing the discharge pressure of the compressor. Also added heat must then be removed from the condenser. So all it would do is make your AC work very poorly.
 
  • #3
chayced is right. There's no increase in pressure by heating the working fluid after it leaves the compressor. That seems to be what they're patenting - it's even written into claim #1.
 

Related to Efficient AC: How Does It Reduce Compressor Work Load?

1. How does an efficient AC reduce compressor work load?

An efficient AC can reduce compressor work load through several mechanisms. One of the main ways is by using a two-stage compressor, which allows the system to operate at a lower capacity and use less energy. Additionally, an efficient AC may also have a variable-speed compressor, which can adjust its speed and output based on the cooling needs of the space. This helps to prevent the compressor from constantly cycling on and off, reducing its workload and energy consumption.

2. Does an efficient AC use less energy?

Yes, an efficient AC uses less energy compared to a traditional AC unit. This is because of the various features and technologies that make it more energy-efficient, such as a two-stage compressor, variable-speed compressor, and improved insulation and sealing. Overall, an efficient AC can save homeowners up to 20-40% on their energy bills.

3. What are the benefits of reducing compressor work load?

Reducing compressor work load can have several benefits, including increased energy efficiency, longer lifespan of the AC unit, and improved cooling performance. When the compressor is not overworked, it can operate more efficiently and effectively, leading to lower energy consumption and a longer lifespan for the unit.

4. Are there any downsides to an efficient AC?

While there are many benefits to an efficient AC, there are some potential downsides to consider. One is that these units may have a higher upfront cost compared to traditional AC units. Additionally, some efficient AC models may require more maintenance and specialized repairs due to their advanced features. However, these potential downsides are often outweighed by the long-term energy and cost savings.

5. Can any AC unit be made more efficient?

In general, most AC units can be made more efficient to some degree through regular maintenance and upgrades. However, the most significant improvements in efficiency are typically seen in newer, more advanced AC models. It's important to research and compare different models to find the most efficient option for your specific needs and budget.

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