What if materials handling operation could achieve higher operational productivity, eliminate cumbersome battery charging infrastructure and deliver consistently high performance? It may be possible with lift trucks powered by hydrogen fuel cells. A fuel cell is an energy conversion device used to capture and use the power of hydrogen. It produces electricity from hydrogen and oxygen, with water vapor and heat as the only by-products. Since this process does not produce any harmful emissions or pollutants, hydrogen fuel cells serve as an ideal choice for warehousing, manufacturing, retail and food applications.
The considerations of hydrogen
A steady, cost-effective supply of hydrogen is critical to the success of any hydrogen powered operation and is an important consideration in the implementation of hydrogen fuel cell-powered lift trucks. In today’s market, hydrogen can either be delivered or generated on-site. Options for delivery range from gaseous hydrogen shipped via tube trailers for lower-volume usage or liquid state hydrogen for higher-volume applications.
Operations contemplating hydrogen can work with suppliers to evaluate if fuel cell technology makes sense for their facility, including conducting demos, pilots and trial programs. This allows the selection of a best-fit hydrogen fuel supply option, each with variable infrastructure, permitting and installation requirements, which can differ greatly based on fleet size, method of hydrogen delivery and anticipated demand.
Building the business case – The major benefits
Currently, most electric lift trucks use lead acid batteries. Once the battery charge expires, the battery must be removed and taken to a charging room, and a freshly charged battery must be installed. This equates to at least 20 minutes of lost productivity every four to eight hours. But hydrogen fuel cells can be rapidly refuelled in as quick as three minutes, allowing operators to get back to work quickly. In multi-shift operations with two or more battery replacements per day, the quick refuelling of hydrogen fuel cells saves time and increases operator efficiency, thus increasing productivity. Furthermore, since lift truck operators can refuel hydrogen themselves, operations can keep business moving and make more efficient use of labour resources.
Adopting hydrogen eliminates the need to designate significant indoor space for battery charging and storage rooms, enabling more efficient use of space, greater throughput capacity and increased productivity. This is especially beneficial for operations close to urban centres, where realestate prices are higher and expanding or investing in a larger facility is extremely expensive.
Hydrogen fuel cells deliver constant voltage until fuel tanks are depleted. This means that in normal operating conditions, fuel cell-powered lift trucks experience no performance degradation during the shift, running at full speed and reducing wear on truck motor controllers. Compared to lead acid batterypowered lift trucks that suffer performance degradation over the last half of the battery charge, hydrogen fuel cells offer sustained performance and improved component longevity.
Lower emissions, lighter impact
With only water vapor and heat as by-products, hydrogen fuel cells produce zero harmful emissions. Companies that deploy hydrogen solutions can expect a significant reduction in greenhouse gas emissions compared to lead acid battery systems charged from the electrical grid. This is important for companies that prioritise green initiatives and strive to reduce their carbon footprint. Choosing hydrogen fuel cell-powered systems over traditional batteries affords further financial and environmental advantages. Lead acid batteries typically require replacement every three to four years, accumulating replacement costs and burdening operations with the disposal of depleted units. However, fuel cells only need replacement every 10,000 hours, resulting in a lower lifecycle cost, reduced disruption to operations and minimal environmental impact.
Operations best suited for adoption
A variety of factors make an application well-suited for hydrogen fuel cell lift trucks. Some of the best opportunities include:
Multi-shift operations that want to reduce battery replacement downtime and increase efficiency
Growing operations that need additional indoor space to increase capacity
Organisations striving to reduce their carbon footprint
Confined settings in which air quality is an important consideration to protect employee health
Making operational, environmental and business sense
In general, deploying hydrogen fuel cells can enable a cleaner workplace and offer productivity and financial advantages over other power sources. As more companies prioritise green supply chain management, materials handling operations not only face challenges to reduce total cost of operations and increase efficiency, but to minimise environmental impact. Fuel cell-powered lift trucks offer a realistic, long-term solution that addresses all these challenges.
Adapt to evolving trends
Lift trucks powered by hydrogen fuel cells are an effective materials handling solution to address evolving industry trends in distribution and fulfillment, with several developments paving the way for greater commercial adoption.
Courtesy: Yale Materials Handling Corporation