Energy efficiency is one of the most important factors all businesses are concerned with. The more efficient your air system, the lower your energy consumption and the cheaper your energy bill!
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A vast amount of the energy that is lost in a factory or plant is due to wasted energy in an air compressor installation. This can have a huge effect on energy costs, raising your bills and making your cost of ownership high. Various technologies have been developed to ensure that compressed air systems are performing as efficiently as possible, one such technology is variable speed drives (VSD).
Traditional air compressors are fixed speed, meaning they run at a constant and consistent speed. This produces a fixed amount of compressed air per minute. There are many benefits to fixed speed compressor technology if your compressed air demand is constant and unchanging. However, this isnt always the case. As fixed speed compressors are always operating at full-throttle, if all of the output is not required then energy is being wasted.
Furthermore, fixed speed compressors run unloaded as the stress of an engine start-up would put pressure on the motor. This can be a waste of energy as the machine is running without producing any compressed air. Variable speed compressors avoid this issue by matching the output with the demand created. By simply producing the exact amount of air being used by the downstream equipment, variable speed compressors help to improve plant efficiency.
Watch this video to see how a fixed speed compressor can be sequenced with a variable speed machine to precisely match output with network demand to save energy.
No need to unload - the ability to start and stop under full system pressure.
Reduced power costs - no loss of energy through running unloaded.
Reduced power surges - avoid peak currents from starting air compressor motor.
More energy efficient - save 30% of the energy used by a typical fixed speed compressor.
Precise electrical control - motor speeds can be slowed down, brought to a halt or revved up.
System leaks minimised - lower system pressure reduces the risk of leaks.
Many air compressor installations will benefit from the efficiency variable speed drive technology provides. Whether you are in the food and beverage industry, automotive, medical industry or even manufacturing, there will be times when your demand for compressed air will vary.
A combination of both variable and fixed speed compressors is thought to be the most cost-effective and advantageous set-up, resulting in the most energy saved and demands met.
In the HVAC world, we love to sing the praises of variable-speed equipment. Compared to standard, single-stage air conditioners, variable speed units provide better, more consistent comfort and improved humidity control.
Theres a lot of confusion around this issue, so lets clear it up right here and now. A variable-speed blower is different from a variable-speed AC compressor. When we say things like variable speed air conditioner or variable speed HVAC system, were usually referring to the air conditioners compressor.
Great question. Your HVAC systems blower is its indoor unit. You may also know it as your furnace fan or air handler.
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Regardless of what you call it, were talking about the same piece of equipment. The part that actually, you know, blows air is the big fan that sends air through your ducts. In a standard AC system, the blower just runs at one very high speed whenever the system calls for cooling.
However, when you have a variable speed blower, the fan inside the indoor unit speeds up or slows down to more accurately match your cooling needs. Its also possible to pair a variable-speed blower with different types of air conditioners.
For example, you can have a variable-speed blower with a single-stage air conditioner. While the air conditioners compressor can only cool at full capacity, the variable speed blower will move air through your ducts at different speeds depending on the cooling load.
Because it further refines the ACs ability to provide exactly the right amount of cooling. A variable-speed blower is great no matter what kind of compressor you have. But a variable speed blower paired with a variable speed compressor? Well, thats even better! Way better.
Variable-speed compressors always pair with variable-speed blowers. Together, these two components give you:
Do you get some of these benefits with, say a variable speed blower paired with a single-stage AC? Sure. You get a little improvement. But a variable speed compressor is what can help you maximize the value of your variable speed blower.
Refer back to this if youre ever confused about variable speed compressors vs variable speed blowers:
Many high-efficiency furnaces have whats called a modulating gas valve. Instead of just providing one level of heat (the highest level possible), the furnace gives your home the right amount of heat to match your needs at any given moment.
Anyway, a furnace with a modulating gas valve also always pairs with a variable-speed blower. This distinction is less confusing because, unlike with ACs, we dont use the same terminology (variable speed) to describe the heating capacity and the blower capacity.
And yes, you can pair a variable speed blower with a two-stage or modulating gas valve. The AC analogy mostly holds although you cant pair a variable speed blower with a single-stage gas valve.
Its a new product (as of June ) and everyone in the industry is still learning about it. Bosch now makes a heat pump with a variable-speed compressor that pairs with a single-stage furnace.
This heat pump is a low-priced unit thats intended to match up with a wide array of existing furnaces. Bosch is trying to make it so that you can keep your furnace and still get a variable-speed air conditioner for improved efficiency during the cooling season.
Its important to keep in mind that this is a very atypical heat pump. We just figured wed mention it because, hey, its out there! The more important thing to remember is that 99.9% of the time, a variable-speed compressor will only pair with a variable-speed blower.
Yep, variable speed anything is an upgrade for comfort and energy efficiency. If you live in Metro Atlanta and are thinking about a new, more efficient AC for your home, give us a shout!
Our team will listen closely to your concerns and analyze your existing system. Well also help you select the right HVAC equipment, whether its variable speed or not.
Are you interested in learning more about integrated variable speed screw air compressor? Contact us today to secure an expert consultation!