Sustainable Product Design
Getting to the roots of eco-friendly design
Gemma Evans explains why sustainable product design should not be an after-thought but a fundamental consideration when it comes to product innovation
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arketing products as “eco- friendly” or “green solutions” is seen as a necessary characteristic as consumers and companies increasingly buy with environmental impact in mind. “Green wash”, as those in the industry commonly refer to it, is the process whereby a product claims some eco- friendly credentials but these claims are not based on sound principles. At Cambridge Consultants, we believe that sustainable product design should not be an after-thought or a marketing gimmick, but be a fundamental consideration in innovation. We have defined the term ‘Ecovation’ to describe an innovation process that sees a product dismantled, studied and analysed in such a way that the most unsustainable elements can be identified. The innovation process can then be directed to specifically reconsider areas where the most benefit can be gained through radical changes, redesign or simple but effective “tweaks”. It is not simply a matter of finding ‘greener’ materials to re-package it, but to identify the precise design and use issues that make a product harmful to the environment and change them. Where the greatest impact occurs in the product
lifecycle obviously varies depending on the product. It could be anything from the raw materials or the way the product consumes energy, the packaging that is used to protect it or even how it is disposed of at the end of its life. The key to a successful green product is
improving a product’s impact on the environment without compromising on cost or performance, which is a key balance that the Ecovation process achieves. Currently it is very easy for products to be categorised as either ‘performance’ or ‘green’ products. But there is no reason why this should be the case. By finding ways to maintain or even improve product functionality, without using elements that make it unsustainable, its impact on the environment can be significantly improved – “eco” without compromise.
Making a difference To drill down to the heart of what within the product causes the biggest environmental impact we must ask a number of questions: How is the product used? How much energy does the product consume during its life? What materials are used? How frequently does the product need to be replaced and for what reasons? By taking a systematic approach
to analysing the existing product lifecycle the innovation team can ensure that the design is focussed on the area where the most can be achieved whilst balancing this with criteria relating to maintaining or improving ease of use, cost and ability to communicate the benefits. Indeed a thorough assessment can also lead to designs with reduced production costs.
Subtracting material
Simply stripping out components and reducing materials does not necessarily make a significant difference. Sometimes, in order to address the greatest flaw of a product in terms of its environmental impact, it is actually necessary to add parts in order to change certain processes within it or reduce the energy consumption levels. Our vacuum cleaner concept, “Stem”, is an example of how adding components to a product can actually make the design more eco- friendly. By applying our ‘Ecovation’ design process to vacuum cleaner technology, we found that the raw materials actually have
32 October 2012 Components in Electronics
little impact on its environmental impact in comparison to the energy consumed during its life. Energy consumption can be affected by the engineering solution itself – for the vacuum cleaner project we investigated how flow paths could be optimised to maximise efficiency – as well as the way the consumer uses the product – and user research conducted by Cambridge Consultants showed potential for some intelligent use of sensing and feedback. So whilst using ‘greener’ materials to make the parts and components will have a little impact on the eco-friendliness of a vacuum cleaner, reducing the energy consumed during use can make a substantial difference. The ‘Stem’ vacuum cleaner was designed to save on energy consumption by enabling the vacuum cleaner to automatically vary its power usage depending on the job being done. Whether using the floor head or the hose attachment, with this concept the user gets the power they need only when they need it. Although components have to be
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