Generating Product-Service Design Improvements from a Climate Impact and Energy Use Perspective Using Life Cycle Assessment : The Case of Vertical Access Equipment

Abstract: Climate change is connected to several negative effects on local environments around the globe such as, longer, and more intense droughts, less freshwater supplies, ocean warming, sea level rise, polar ice melting, more intense storms, and rainfall (NASA, 2021).  These problems are mainly due to the increasing amount of carbon dioxide in the atmosphere as well as other greenhouse gases (GHG) which cause a similar or stronger climate change effect (WWF, 2021). Practically all climate researchers agree that climate change is caused by human activities (WWF, 2021), as such human activities will have to change to reduce their climate impact. One possible approach to achieve sustainable products is the concept of a circular economy (CE). The proponents of a circular economy describe it as an economic or industrial system which is restorative by its design (EMF, 2010). Currently there is a substantial body of knowledge on how LCA can be used to guide product design in a sustainable direction.  However, as of yet there are limited academic research focused on how environmental assessment can impact the design of Vertical Access Equipment (VAE) and of similar products. This thesis aims to support the VAE sector’s transition towards a CE. The objective of this study was to understand and provide improvement suggestions for the environmental performance and energy use of VAE. This Involved a case study where a LCA was conducted to establish a baseline of four VAE products, a construction hoist, a service lift, an industrial elevator, and a BMU. The results of the initial LCA varied greatly depending on the different products and their use case. Guided by the LCA results, semi-structured workshops were held to find feasible improvement suggestions whose impacts were investigated using LCA once more. Feasible and substantial improvements focusing on the products high impact areas were found for all products. For the construction hoist improvements regarding eliminating waste in the lifting work was most impactful, whilst the service lift required optimizing of maintenance and use of sensors to reduce the maintenance time. For the industrial elevator and the BMU, measures which focused on reducing virgin material extraction showed most promise, such as lifespan extension, remanufacturing, and use of recycled materials.