In the tunnel washer systems, the tumble dryer part is the biggest part of a tunnel washer system’s energy consumption. How to choose a more energy-saving tumble dryer? Let’s discuss this in this article.
In terms of heating methods, there are two common kinds of tumble dryers:
❑ steam-heated tumble dryers
❑ direct-fired tumble dryers.
In terms of energy-saving designs, there are two kinds of tumble dryers:
❑ direct-exhaust tumble dryers
❑ heat-recovery tumble dryers.
Firstly, let’s know the direct-fired tumble dryers. The direct-fired tumble dryers use natural gas as fuel and directly heat the air so that the heat resource has little loss and high drying efficiency. Also, natural gas is a cleaner and more energy-saving resource. Its usage shows hygiene and cleanliness. With more and more strict environmental protection, some regions are not allowed to use boilers so using direct-fired tumble dryers is the best choice.
○When using direct-fired tumble dryers, their energy-saving still shows in terms of several aspects.
Higher heat efficiency
The steam-heated tumble dryers need to heat the water to get the steam and heat the air by virtue of the heated steam. In this process, a lot of heat will be lost and the heat efficiency is often under 68%. However, the direct-fired tumble dryers’ heat efficiency can reach over 98% by direct heating.
Lower maintenance costs
The direct-fired tumble dryers have lower maintenance costs when compared with steam-heated tumble dryers. The valves and insulation of channels in steam-heated tumble dryers require a high price of maintenance. Bad water recovery design can contribute to long-term steam loss without being noticed. Meanwhile, the channels of direct-fired equipment will have no such problems.
Reduced labor costs
The steam tumble dryers need to be equipped with boilers which need boiler operators. While direct-fired tumble dryers don’t need to hire operators, which reduces labor costs.
Greater Flexibility
The steam-heated tumble dryer applies overall heating. Even using only one piece of equipment requires opening the boiler. Direct-fired tumble dryers can be used immediately without needing to activate a boiler, which reduces unnecessary waste.
This is why direct-fired tumble dryers from CLM are becoming increasingly popular in laundry factories.
Post time: Sep-19-2024