Industrial Washing Machines with High Dehydration Rates can Create Higher Profits for Laundry Plants

Everyone has a consensus that the dehydration rate of industrial washing machines in laundry plants has a great impact on the overall drying cost. However, given how big this effect is, we can get a more intuitive idea by doing the math.

Market Analysis

The higher the dewatering factor of the washing machine, the better the dehydration rate, the drier the cloth is after dehydration, and the less energy is consumed by drying.

At present, there are not many 100kg washing machines on the market that can really reach a 300 G dewatering factor. Most of them are between 260G and 300G, and even fewer exceed 300 G. This can be seen from the highest frequency of the inverter: the highest frequency of most 100kg washing machines is between 116 and 118 Hz. If the dewatering factor reaches 300G, the maximum frequency of the inverter needs to reach more than 125 Hz.

Calculation Formula

The indicator for measuring the dehydration rate of the washing machines is the dewatering factor or G-force. It has a set of calculation formulas.

❑ G=0.00112rn²

(r is the radius of the washing machine, n is the speed).

Therefore, we know that the larger the diameter of the washing machine, the higher the speed, and the higher the G-force.

Kingstar 100kg washing machine can reach a 400 G dewatering factor, and its frequency of the inverter during dehydration can reach 145 Hz.

When the dewatering factor is 400G, the moisture content of linen after being washed in the washing machine is around 55%. When the dewatering factor is 300G, the moisture content of linen after being washed in the washing machine is about 75%. There’s a 20% difference between them. We will take 400G and 300G dewatering factors as an example to show you the impact of different dewatering factors on the cost of the laundry plant for the same 100kg washing machine.

Costs Difference

The linen of a bed in the hotel weighs 3.5kg, the proportion of towels is 35%, and the proportion of bed sheets and quilt covers is 65%. The dryer consumes 3kg of steam to dry 1kg of water. The ironer consumes 1.2kg of steam to evaporate 1kg of water.

Taking a small and medium-sized laundry factory that washes 2,000 sets per day as an example, calculate the impact of different dehydration rates on the drying and ironing cost on the basis of a steam price of 280 yuan/ton:

● Drying towels: 2000 sets/day × 3.5kg/set × 35% (towel ratio) × 20% (the excess water content) × 3kg of steam × 0.28yuan/kg × 365(day) ≈ 150000yuan

By calculation, when the moisture content difference is 20%, drying towels can save about 150,000 yuan a year.

It can save about 112000 yuan a year if you iron the sheets and duvet covers. The details are as follows.

● Iron the bed sheets and duvet covers:

2000 sets/day × 3.5kg/set × 65% (Towel ratio) × 20% (the excess water content) ×

1.2kg of steam × 0.28yuan/kg × 365 days ≈ 112000yuan

Conclusion

The dehydration factor difference of 100G means the linen moisture content difference of 20%. The use of a washing machine with a 400 G dewatering factor in a laundry plant steam costs can save nearly 262,000 yuan a year. Cost savings can create higher profits for laundry plants, so when purchasing industrial washing machines, you need to pay more attention to their dehydration rate.