This degree project handles acoustic measurements of the heat pump EcoAir 107, made by Enertech CTC AB. The sound from the three sound sources of the heat pump, fan, compressor and four way valve, have been measured to find out how they affect the total sound level of the product.Measures to attenuate the sound level have been developed and tested. By comparing these with the sound of the heat pump, in its original state, we have found out the measures which have best effects.The best attenuating measures came to be: taped openings and holes around the compressor space, isolating the top and the bottom of the whole construction, support of the fan bottom part and shielding of the sound source with a screen at a distance of 110 mmThese measures have been tested together and an average attenuation of the total sound level with 3,9 dB have been accomplished. In the front of the fan where the continuous sound is the strongest, the attenuation was 4,7 dB.This project is meant to be used as a guide by Enertech CTC AB:s during their future developing process..

This degree project has been carried out in cooperation with Enertech AB in Ljungby and is pilot study to automating all current manual soldering. The soldering process accounts for a large part of the processing cost in the production of a heat pump. The process is also a quality risk and has a major impact on the lifetime of the final product.The Main task of this project has been to evaluate automation of the soldering process, to develop automation solutions and a principle layout, to draw the design changes required for the automation and to calculate the supposed solution.This pilot study has resulted in a suggested automation solution using laser as a heat source for soldering. Calculations of the solution show that a automating a laser soldering cell is very profitable..

Detta examensarbete är utfört i samarbete med Enertech AB. Det är ett konstruktionsprojekt med mål att utveckla en överkåpa med justerbar höjd. Överkåpan ska passa på tre olika värmepumpar EcoHeat V3, EcoHeat 300 and EcoEl V3.0.Vi har valt att följa Fredy Olssons metoder Principkonstruktion och Primärkonstruktion. Detta är metoder vi tillämpat tidigare och de passar bra in på detta projekt. För att få en lämplig design så har vi även tillämpat många metoder enligt SVID.Det inledande arbete har bestått utav en produktdefinition, en konkurrentsanalys och designverktyg som till exempel Moodboard och Persona.

Detta examensarbete är utfört i samarbete med Enertech AB. Det är ett konstruktionsprojekt med mål att utveckla en överkåpa med justerbar höjd. Överkåpan ska passa på tre olika värmepumpar EcoHeat V3, EcoHeat 300 and EcoEl V3.0.Vi har valt att följa Fredy Olssons metoder Principkonstruktion och Primärkonstruktion. Detta är metoder vi tillämpat tidigare och de passar bra in på detta projekt. För att få en lämplig design så har vi även tillämpat många metoder enligt SVID.Det inledande arbete har bestått utav en produktdefinition, en konkurrentsanalys och designverktyg som till exempel Moodboard och Persona.

This degree project has been carried out in cooperation with Enertech AB in Ljungby and is pilot study to automating all current manual soldering. The soldering process accounts for a large part of the processing cost in the production of a heat pump. The process is also a quality risk and has a major impact on the lifetime of the final product.The Main task of this project has been to evaluate automation of the soldering process, to develop automation solutions and a principle layout, to draw the design changes required for the automation and to calculate the supposed solution.This pilot study has resulted in a suggested automation solution using laser as a heat source for soldering. Calculations of the solution show that a automating a laser soldering cell is very profitable..

If you have access to wood, a wood burning boiler is a cheap way to heat your home, but it is certainly not the most convenient option. Wood requires many operations and management, which takes time. One way to reduce this workload is to have a modern boiler with automatic ignition. Enertech/CTC has a desire to create an accessory with automatic ignition to a modern wood burning boiler. Today there is no boiler on the market that can ignite firewood automatically without the introduction of paper and sticks.

Handling materials and packaging, which is the focus of this study, requires efficient logistics, both internally and between companies. To achieve an efficient material flow, good information systems, whose role is to collect, store, process and distribute information, are required. The assumption that packagings are handled in an efficient manner is currently not a matter of course, when many companies do not prioritize the internal management of the package.The purpose of this report was to investigate how medium-sized businesses working with distribution and handling of spare parts packaging can improve their internal management of packaging. In order to answer the purpose, we have used an abductive process and a qualitative data collection. The study had Logistic Center Ljungby (LCL) at Electrolux Laundry Systems (ELS) as a case company and two other respondents, Nibe in Markaryd and Enertech in Ljungby.