Improving efficiency will not only save you time but save you money, after all drying can account for as much as 70% of the energy consumption in your laundry. Maximising dryer efficiency starts at the beginning, with your laundry layout and your choice of laundry equipment. Yes, that is correct, your dryer’s efficiency does not depend on your dryer alone. But even if you have an established laundry, it’s never too late to make adjustments and get the best out of your dryer.
- Laundry Room Design
Dryers require sufficient combustion air (fresh air), appropriate ventilation for exhaust air (ducting), ample heat source (usually gas), and an electricity connection (usually three-phase). This means establishing the laundry room in a location that has the best access to all of these utilities. When these factors aren’t considered, it can lead to an overly humid laundry, complex and expensive duct work and an underperforming dryer, adding to drying time and energy costs. Not only is this costly to your business, but it increases fire risk and health risks.
- The Right Washer
Pairing your dryer with the right washer can reduce drying time by 30-40%. In the last 10+ years high speed washers have improved substantially, which has not only cut down the time required in the dryer, but has reduced the dryer size required to do the job. While highspeed (soft-mount) washers may be more costly upfront, they will save you time and money in the long term.
- Dryer Airflow
When looking to invest in a new dryer, the type of airflow can have a significant impact on energy-efficiency. Axial airflow moves hot air from the back to the front and dries linen quickly. Axial airflow is better suited to smaller commercial machines up to around 25kg. Radial airflow offers the best drying solution for dryers bigger than 25kg. Radial airflow moves hot air around the entire drum surface, because of this it is better at drying big loads of linen.
- Auto-dry features
Most commercial dryers are fitted with some form of auto-dry feature. The most common auto-dry technology calculates the drying time required based on the weight, size and temperature of the linen. Other auto-dry technology takes accuracy to another level, using sensors to detect moisture in the load and monitor the exact moment the linen is dry. The cost of over-drying quickly starts to add up, not just on time and resources, but it takes a toll on your linen too, making auto-dry features an absolute must for dryer efficiency.
- Washer – Dryer Ratio
Depending on your budget and your laundry needs, it’s ideal to have a minimum of two washers and two dryers. There are a number of benefits to this setup. First, it means that when one machine is down or being serviced, you can still operate the laundry at 50% capacity. Second, if you were to have one washer and two dryers, it encourages operators to split loads between the dryers, leading to over-drying and wasted energy. The opposite formation, and you could have wet laundry waiting to be dried or an overloaded dryer.The size difference between washers and dryers is also important. We recommend that the dryer load capacity be approximately 1.5 times the washer’s capacity. For example, an 18kg washer pairs well with a 26kg dryer.
Consider these 5 factors when you’re wanting to achieve maximum dryer efficiency. Remember, an efficient dryer relies on an efficient and well planned out laundry. It’s never too late to improve your laundry, ask us how!