Throughout Jönköpings University has a bachelor thesis at Husqvarna AB been done, were the main focus is to develop the existing heating element. On the existing front and rear handle is where the heating element are placed and the material the handles are made of is aluminum respectively plastic. These handle are also called the reference at Husqvarna AB.   To be able to have different type of concepts was a method called concept generating, where these concepts were developed and later on eliminate nonrealistic ideas. During the project there was a lot of visits at several companies to be able to see the production and have a meeting with them. PTC-technology was the chosen heating element for this project and stands for “Positive Temperature Coefficient” and is a self-regulating heating element. PTC has a low inner resistance until it reaches the temperature that it is manufactured for to maintain a more stable heating level. Tests were made on the concepts that was given against the reference to see which concept that is most suitable for further development. Different methods and theories was used to be able to create tools for embossing the front handle, which later on got heat-treated.   The existing heating element is based on the amount of rounds per minute the flywheel rotates which result in different heating levels for the consumer. PTC technology gives a more stable heating level for such system with various rotational speed. Husqvarna AB’s purpose with this thesis is to develop a more stable heating element on the XPG chainsaws.   This thesis ended with a result of two different winning concepts which was given recommendations for how they could further be developed to be possible to replace the existing heating element.

<p>This report aims to describing the work behind the development of a masonry heater.</p><p>The masonry heater is developed in collaboration with the company Transient Design KB that is a product development company located in Alingsås. The company sees a possibility to cover a market segment where modern technology and design are missing.</p><p>The report presents those methods and approaches that have been used and gives an overview to how the project has been carried out. It describes how the ideas behind the final results have produced and how they have been developed during the project's time. In the report you can also read about the final concept with its choices of construction and materials.</p><p>The report is completed with a presentation of a final concept and a ground for possible future production.</p> / <p>Denna rapport syftar till att beskriva arbetet bakom utvecklingen av ett värmeelement.</p><p>Värmeelementet utvecklas i samarbete med företaget Transient Design KB som är ett produktutvecklingsföretag beläget i Alingsås. Företaget ser en möjlighet att täcka ett marknadssegment där modern teknik och formgivning saknas.</p><p>Rapporten presenterar de metoder och arbetssätt som används och ger en överblick över hur projektets arbetsgång sett ut. Den beskriver hur idéerna bakom det slutgiltiga resultatet tillkommit och hur de har utvecklats under arbetets gång. I rapporten går även att läsa om det slutgiltiga konceptet med dess konstruktion och materialval.</p><p>Rapporten avslutas med en presentation av ett färdigt koncept och tillverkningsunderlag för eventuell framtida produktion.</p>

This report aims to describing the work behind the development of a masonry heater. The masonry heater is developed in collaboration with the company Transient Design KB that is a product development company located in Alingsås. The company sees a possibility to cover a market segment where modern technology and design are missing. The report presents those methods and approaches that have been used and gives an overview to how the project has been carried out. It describes how the ideas behind the final results have produced and how they have been developed during the project's time. In the report you can also read about the final concept with its choices of construction and materials. The report is completed with a presentation of a final concept and a ground for possible future production. / Denna rapport syftar till att beskriva arbetet bakom utvecklingen av ett värmeelement. Värmeelementet utvecklas i samarbete med företaget Transient Design KB som är ett produktutvecklingsföretag beläget i Alingsås. Företaget ser en möjlighet att täcka ett marknadssegment där modern teknik och formgivning saknas. Rapporten presenterar de metoder och arbetssätt som används och ger en överblick över hur projektets arbetsgång sett ut. Den beskriver hur idéerna bakom det slutgiltiga resultatet tillkommit och hur de har utvecklats under arbetets gång. I rapporten går även att läsa om det slutgiltiga konceptet med dess konstruktion och materialval. Rapporten avslutas med en presentation av ett färdigt koncept och tillverkningsunderlag för eventuell framtida produktion.